How to use the 300 W digitally controlled high voltage AC ...

IntroductionThe STEVAL-LLL009V1 digitally controlled 300 W power supply consists of power factor correction (PFC) and DC-DC power(half-bridge LCC resonant converter) stages, with secondary side synchronous rectification. An STM32F334 microcontrollerimplements digital DC-DC and output synchronous rectification control, while the PFC is driven in transition mode by theL6562AT controller. The system supports constant voltage (CV) and constant current (CC) operation.

MDmesh K5 and MDmesh DK5 Power MOSFETs are used in the PFC and LCC half-bridge, respectively, to ensure maximumefficiency, while the STripFET F7 Power MOSFET is employed to reduce conduction losses in the synchronous rectificationstage on the secondary side.

Both the primary and secondary sections are supplied by an off-line flyback circuit based on VIPer267KDTR which providesregulated voltages to the control board, the gate driver ICs and the signal conditioning circuits.

Formal testing and measurement results confirm the ability of performance ST power products combined with comprehensivedigital control to deliver high efficiency, power factor near unity, and low THD across wide input voltage and load conditions.

Figure 1. STEVAL-LLL009V1 evaluation kit

How to use the 300 W digitally controlled high voltage AC input HB LED driver

UM2765

User manual

UM2765 - Rev 1 - December 2020For further information contact your local STMicroelectronics sales office.

www.st.com

https://www.st.com/en/product/steval-lll009v1?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/stm32f334r8?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/l6562at?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/viper26k?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

1 STEVAL-LLL009V1 overview

Figure 2. STEVAL-LLL009V1 block diagram

OutputOperation Mode:

CV (SW1: 1-2)CC (SW1: 2-3)

275 –480VAC Mains

O/P

DC-BUS Sense

Bridge

STM32F334

L6491Gate Driver

STP100N10F7

STGAP2DGate DriverVIPer26K

0-10V

PFC

CONTROLLOGIC

GATE

Filter

750 ±2.5%DC-BUS

L6562AT

Optically

STW20N95DK5

HB-LCC Sync.Rect.

MCUIsolated

STW20N95K5

Rectifier

ISOLATION

DRIVEAuxiliarySupplyFlyback

ISOLATION

The STEVAL-LLL009V1 evaluation kit is a digital power supply which convert 270 V to 480 V AC mains inputvoltage to 48 V DC, 6.25 A maximum current in a constant voltage (CV) mode while in constant current (CC)mode it can delivers 6.25 A of current with output voltage ranging from 36 - 48V. The evaluation kit can either beconfigured in CV mode or CC mode by using the toggle switch SW1 mounted on the Power Board (as explainedin Table 4).The DC-DC power stage is referred to the primary ground while the microcontroller is referred to the secondaryground. Thanks to STGAP2DM galvanically isolated half bridge gate driver which drives the DC-DC power stageMOSFETs with the control signal coming from the microcontroller.A PFC voltage sensing daughter board with isolated amplifier provides feedback information regarding the PFCoutput voltage that becomes the input voltage for the DC-DC power stage.The auxiliary power supply supplies the control board, drivers and signal conditioning circuitry. The presence ofthe input voltage is signaled by red LED D9 on the main power board, red LED D22 on the Daughter board andthe green LED D1 on the control board.The system remains in input undervoltage state between 100 and 200 VAC, during which you can safelyreprogram the microcontroller using IAR Embedded Workbench for ARM ver.8.42 or higher, or any otherappropriate programming tool. When the input voltage is raised to the required 270 to 480 VAC input voltagerange, the converter becomes operational after a default wait time of 1250 ms.

Table 1. Converter characteristics

Parameter Value / Range / Comments

Input AC voltage 270 to 480 V

PFC Output Voltage 725 ±2.5%

PFC Operating Mode Transition Mode

Power factor at full load (270-480 VAC) > 0.95

Power factor over input voltage span

270V-480 VAC> 0.9 for load > 33% max. load

THD at full load (270V-480 VAC) < 10%

UM2765STEVAL-LLL009V1 overview

UM2765 - Rev 1 page 2/38


https://www.st.com/en/product/stgap2d?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

Parameter Value / Range / Comments

THD over input voltage range

270-480 VAC< 20% for load > 25% max. load

Evaluation kit peak efficiency at maximum load > 93.5%

Maximum Output power 300 W

Output Configuration Constant Voltage (CV) or Constant Current (CC)

Output: Constant Voltage (CV) Mode 48.5 V ±1% with maximum of 6.25 A

Output: Constant Current (CC) Mode 6.25A ±2.5% with output voltage ranging from 36 to 48 V

DC-DC converter topology Half bridge LCC resonant converter

Half bridge LCC resonant converter:

closed loop switching frequency90 to 275 kHz

Half bridge LCC resonant converter:

Start-up switching frequency280 kHz

Synchronous rectification topology Full bridge

HF transformer isolation 3 kV

Cooling Natural air

Dimming method Analog dimming

Dimming control 0-10 V

Default brightness level 100%

Dimming resolution 1%

1.1 Startup and safety mechanismsA ramp-up procedure at startup to avoid high current spikes is implemented by driving the high voltage MOSFETson the main power board at the maximum switching frequency of 280 kHz, which gradually decreases over1500 ms to the minimum 90 kHz.If the output voltage reaches the reference value during ramp-up, the PI control loop is closed and the systemcommences normal operation. If the ramp-up time expires before the nominal voltage is reached, a startup failureis triggered and PWMs are stopped.The evaluation kit includes the following protections:• DC-DC Converter Input (PFC Output) overvoltage and undervoltage.• Output overvoltage and undervoltage.• Fast overcurrent.• Output overcurrent.• Startup failure.

Each fault is identified with a code and the system fault variable is then given by an OR operation of the codes ofall the faults that have occurred. When a fault occurs, the PWM signals are stopped and the microcontroller setsthe converter to the FAULT state. In this state, the blue status LED D2 is OFF and the red fault LED D3 blinks acertain number of times to indicate the type of fault that occurred. All blinking sequences are repeated after threeseconds.

UM2765Startup and safety mechanisms

UM2765 - Rev 1 page 3/38

Table 2. Control board LED indications

Reference Number Color Indication

D1 GREEN ON

D2 BLUE

OFF: system is OFF.

Slow blinking: system is idle.

Rapid blinking: system is ramping up.

ON: system is operating normally.

D3 REDVoltage-related faults: tON = 500 ms, tOFF = 500 ms

Other faults: tON = 250 ms, tOFF = 250 ms

Input undervoltage and overvoltage faults are automatically cleared when the input voltage returns to within thecorrect operating range. To clear other faults, you must disconnect the input voltage and wait until the unit shutsdown.

Table 3. STEVAL-LLL009V1 fault codes

Error Name Code Condition Number of blinks Blinking speed Recoverable

DCDC_NO_ERROR 0x0000 - - - -

DCDC_OUT_OVER_VOLT_ERROR 0x0001 Vout > 56 V 3 slow N

DCDC_OUT_UNDER_VOLT_ERROR 0x0002 Vout < 35 V 2 slow N

DCDC_IN_OVER_VOLT_ERROR 0x0004 Vin > 775 V 4 slow Y

DCDC_IN_UNDER_VOLT_ERROR 0x0008 Vin < 575 V 5 slow Y

DCDC_OVER_CURRENT_ERROR 0x0010 Ires(peak) > 2 A 2 fast N

DCDC_OUT_OVER_CURRENT_ERROR 0x0020 Iout > 7.5 A 3 fast N

DCDC_STARTUP_FAILED_ERROR 0x0080Vout < 47 V

Tramp > 1500 ms4 fast N

UM2765Startup and safety mechanisms

UM2765 - Rev 1 page 4/38

2 STEVAL-LLL009V1 kit components

The STEVAL-LLL009V1 kit consists of the following evaluation boards:1. Main power board2. PFC output voltage sensing daughter board3. Microcontroller control board4. Programming interface with ST-LINK board

Note: Depending on the requirement, the position of switch SW1 on the main power board should be set beforepowering up the evaluation kit.

Table 4. Switch SW1 position for output configuration

SW1 Position Ouput configuration

1:2 CONSTANT VOLTAGE (CV)

2:3 CONSTANT CURRENT (CC)

2.1 Main power board

Figure 3. Power board functional areas1. Input connector2. PFC MDmesh K5 Power MOSFET3. Half-bridge LLC MDmesh DK5 Power MOSFETs4. PFC output voltage sensing daughter board connector5. Control board connector6. 0-10V input7. Output connector8. Full-bridge SR STripFET F7 Power MOSFETs9. Constant voltage or constant current output selector

1

23

4 56

78

9

2.1.1 Power factor correction (PFC)The PFC section ensures the system complies with standard EN61000-3-2 (harmonic current distortion) forlighting equipment at an input active power above 25 W. It is implemented with an L6562ATD PFC controller,which drives the STW20N95K5 MDmesh K5 Power MOSFET in transition mode.

UM2765STEVAL-LLL009V1 kit components

UM2765 - Rev 1 page 5/38



RELATED LINKS For more information in PFC operation in transition mode, see application note AN2761: “Solution for designing a transitionmode PFC pre-regulator with the L6562A”

2.1.2 DC-DC power stage based on half-bridge LCC topologyThe DC-DC power stage is implemented in a half-bridge LCC resonant topology to allow a wide input voltagerange for various LED lighting applications.As the parallel capacitor Cp is connected to the secondary of the transformer, the parasitic capacitances of thesynchronous rectification and the leakage inductance of the transformer become part of the LCC resonant tankconsisting of capacitor Cr, capacitor Cp (placed in secondary), inductor Lr and the isolation transformer.

Figure 4. Half-bridge LCC resonant converter with synchronous rectification

Synchronousrectification

DC-BUS

COUT

L r

Cr

Cp

PFC

I/P

O/Pn:1

Half Bridge LCC

The PFC output voltage charges the bulk capacitor to generate a stable DC-BUS, and the MOSFETs in half-bridge configuration generate a square voltage waveform between GND and DC-BUS. The square voltage isapplied to the LCC resonant tank.The high voltage MDmesh DK5 power MOSFETs in the half-bridge of the LCC resonant converter are drivenat 50% PWM duty cycle and an appropriate dead time. As the approximately sinusoidal resonant tank currentalways lags the voltage waveform (inductive region), the MOSFET output capacitance has time to dischargeduring the dead time before the next turn-on and achieve zero voltage switching (ZVS). PWM switching frequencycontrol is used to regulate the voltage gain of the resonant tank and keep the converter in the inductive region.This allows ZVS over the entire operating range and reduced switching losses.

2.1.3 Synchronous rectification (SR)The voltage waveform on the secondary side of the transformer is rectified by the synchronous rectifier consistingof STripFET F7 series MOSFETs in full-bridge configuration, digitally controlled by the STM32F334 MCU basedon MOSFET Drain-Source voltage (VDS_SR1 and VDS_SR2) feedback.

UM2765Main power board

UM2765 - Rev 1 page 6/38

https://www.st.com/resource/en/application_note/CD00195944.pdf

https://www.st.com/resource/en/application_note/CD00195944.pdf


Figure 5. Synchronous rectification with VDS sensing

Synchronousrectification

DC-BUS

COUT

L r

Cr

Cp

PFC

I/P

O/Pn:1

Half Bridge LCC

DAC

ComparatorVDS_SRx

+3.3V VCC

+

Microcontroller

RC filter

SR MOSFETsGate Drive

Pull-up

ControlAlgorithm

-

VDS_SR1

VDS_SR2

The sensing network consists of a fast diode and a pull-up resistor connected to the microcontroller (MCU) supplyvoltage. When the SR MOSFET drain voltage is above the MCU VCC, the diode is reverse biased and the sensedvoltage is pulled up to VCC. When drain voltage is below VCC, the diode is forward biased and the sensed voltageis equal to this voltage plus the voltage drop of the diode that gives a positive shift. The current during positivebiasing is limited by the pull-up resistor.Initially, the body diodes of SR MOSFETs start conducting and VDS is sensed. When the voltage (VDS) falls belowthe set threshold (Vthreshold ON - OFF set by MCU DAC peripheral), the comparator output (falling edge) triggers theMCU TIMER peripheral in one pulse non-retriggerable mode.


UM2765 - Rev 1 page 7/38

Figure 6. Synchronous rectification digital control algorithm

Gate Driver Delay

TimerReset

TimerStart

Blanking Time Turn ON Min.

Vthreshold ON – OFF (DAC Setting)

Comparator Trigger

Timer

MOSFET Gate

Sync. Rect. Node VDS

MOSFET Turn ON Delay Turn ON Max.

MOSFET Body Diode Conduction

MOSFET ON

MOSFET Body Diode Conduction

MOSFET OFF

MOSFET Channel Conduction

The MCU TIMER peripheral initiates a pulse to the corresponding synchronous rectification gate driver, which issustained for a minimum time, TON min.When the voltage (VDS) increases above the set threshold (Vthreshold ON - OFF set by MCU DAC peripheral), thecomparator output (rising edge) resets the MCU TIMER peripherals and the pulse is stopped at the correspondingsynchronous rectification gate driver.The MCU continuously monitors the DC-DC power stage (HB-LCC) frequency and the output current. If thefrequency exceeds the set threshold with hysteresis or the output current falls below set threshold with hysteresis,the MCU disables the gate drive to the synchronous rectification stage. The synchronous rectification gate drivesare enabled when the conditions return inside the threshold settings.Depending on the DC-DC power stage (HB-LCC) operating frequency, the threshold (Vthreshold ON - OFF) isadjusted from the look-up table stored in the MCU.

RELATED LINKS For more information on synchronous rectification, see application note AN4674: “SRK2001 adaptive synchronous rectificationcontroller for LLC resonant converter evaluation board family”

2.1.4 Analog dimming controlThe evaluation kit implements analog dimming with 1% resolution via a 0-10V input to control the amount ofcurrent in the LEDs.

Note: The 0-10V dimming control is only available when the evaluation kit operates in constant current (CC) mode.

Table 5. Comparison of digital dimming and analog dimming

Digital dimming Analog dimming

No color shift as LED current remains the same Color shift as LED current changes

Possible current inrush problems No inrush current

Very linear change in brightness Brightness linearity not as good

Lower optical to electrical efficiency Higher optical to electrical efficiency

Frequency limitations and issues No frequency issues


UM2765 - Rev 1 page 8/38

https://www.st.com/resource/en/application_note/DM00172202.pdf

https://www.st.com/resource/en/application_note/DM00172202.pdf

2.2 PFC Output voltage sensing daughter boardThe PFC output voltage sensing board ensures input undervoltage and overvoltage protection for the DC-DCpower (HB-LCC) converter stage on the power board.

Figure 7. PFC output voltage sensing daughter board

The output of the isolated amplifier is sensed at the ADC peripheral of the microcontroller, and if the sensed valueof the DC-BUS (PFC output voltage) voltage breaches the set operating range, the microcontroller interruptsPWM modulation and sets the converter to the FAULT state, which is signaled by the blinking red LED D3 on thecontrol board.The DC-DC power stage input undervoltage and overvoltage faults are automatically cleared when the inputvoltage returns to the correct operating range.

2.3 Microcontroller control boardThe digital control board is based on the STM32F334R8 microcontroller and is connected to the power boardthrough a standard 64-pin DIN 41612 connector with a specific pinout for DSMPS applications.

Figure 8. STEVAL-DPS334M1 digital control board1. Debugger connector2. STM32F334 microcontroller3. Indication LEDs4. 3.3. V LDO5. Control board connector

1

2

3

4

5

UM2765PFC Output voltage sensing daughter board

UM2765 - Rev 1 page 9/38

The MCU embeds a high resolution timer peripheral (HRTIM) designed to drive power conversion systems. Itcan drive the power stages with pulse width modulations (PWM) at a resolution of 217 ps, which allows very finefrequency adjustment steps and high precision output voltage regulation.The control board includes an LDO regulator to supply 3.3 V to the microcontroller, two optocouplers for isolatedbidirectional UART communication, RC filters with protection diodes for each analog channel, and three LEDs tosignal the presence of a supply voltage, the state of the converter and any faults.

2.4 Programming interface with ST-LINK boardThe adapter board provides various communication interface options for the microcontroller unit on the controlboard. The adapter board interfaces with the control board through a 10-pin connector that provides the SWDinterface for debugging and USART communication for user interface.

Figure 9. STEVAL-DPSADP01 adapter board

The adapter board has a 20-pin JTAG connector to allow programming and debugging communication between astandard debugger (ST-LINK, J-Link, etc.) and the microcontroller on the control board.The USART interface of the adapter board can be set to RS-232, CAN or SMBus through appropriate jumperconfiguration.The adapter board also has embedded transceivers for the RS-232 (through DB9 male connector) and CAN(through DB9 female connector) protocols.The adapter board also has a reset button and a system management bus (SMBus) connector.

UM2765STEVAL-DPSADP01 adapter board

UM2765 - Rev 1 page 10/38

3 Firmware implementation

The STSW-LLL009FW firmware on the STM32F334 MCU controls the HB-LCC resonant converter, synchronousrectification, dimming and safety mechanisms in the evaluation kit.Some of the features of the firmware include:• 50 kHz PI voltage control loop• PWMs generation with 217 ps resolution (HRTIM)• Startup with decreasing linear frequency to avoid current spikes• Startup protection on mismatch of output voltage• Adaptive SR based on embedded comparators and voltage sensing• Automatic SR activation according to output load• Fast overcurrent protection with internal comparator• Analog watchdog on output voltage for overvoltage protection• Open loop mode

Figure 10. STSW-LLL009FW firmware logic

UM2765Firmware implementation

UM2765 - Rev 1 page 11/38


4 STEVAL-LLL009V1 layout

Figure 11. STEVAL-LLL009V1 top layer silk screen and drill

Figure 12. STEVAL-LLL009V1 top layer

Figure 13. STEVAL-LLL009V1 bottom layer silk screen and drill

UM2765STEVAL-LLL009V1 layout

UM2765 - Rev 1 page 12/38

Figure 14. STEVAL-LLL009V1 bottom layer

UM2765STEVAL-LLL009V1 layout

UM2765 - Rev 1 page 13/38

5 Schematic diagrams

Figure 15. Power board - PFC

1N4148

21

D37

STTH212U

21D33

10K-0603

100nF-0805

R144

C92

270uF-450VC89

PRI.-GND

1

TP36

51K-1206R134

820K-1206R128

1N414821

D36

300-400 VAC

3 2 1

J9

DNM

C83

100K-0603R178

470K-1206R136

1K-0603R150

10E-0805R183

820K-1206R133

820K-1206R140

STW20N95K5

D2

S3G

1Q7

STTH512B-TR

3 2

1

D34

STP03D200

E3C2

B1 Q13

470K-1206

V-OUTPUT PFC

R131

1

TP4

680nF

C86

10nF-0603C97

10K-0805R121

220K-1206

R132

470K-1206R123

0.47E-1WR135

2DNM

1D41

2

18V

1

D38

220K-1206R137

2

2.2mH

3

1

4

L5470K-1206R116

1nF-0603C98

2AF1

4.7K-0603R149

220K-1206R145

1

BRIDGE

3

4

2D35

-+

2.2uF-0603

10nF-100V-0805

C93

C90

220K-1206

R146

2083.0017

8

5

1

2

T5

DNM-0603

100nF-50V-0603

C99

C95

0.47E-1WR138

PFC ControllerVcc

51K-1206R141

1

TP35

DNM

C87

6.2K-0603R151

100E-0805

SMMBTA06LT1G

R139

Q11

1uF-100V-1206C106

22E-0805R152

2

15V

1D43

51K-1206

220K-1206

R147

R117

PFC MOSFETGATE DRIVE

51K-1206R129

1TP31

SMMBTA06LT1GQ14

1M-1206R173

100nF-X2

C85

2.2K-0805R177

220K-0805R176

1M-1206R175

1M-1206

270uF-450V

R174

C91

47nF-X2C88

Vcc 8

GD 7

6GND

ZCD 5MULT

CS4

COMP

3

L6562ATD

2

1 INV

U10

100nF-X2C84

820K-1206R124

0E-0805

220nF-0603

R120

C94

220K-1206R118

100uHL4

1N4148

2 1

D39

220K-1206R127

100K-0805R142

47K-0603R148

22uF-35VC96

220K-1206

R130

18K-0603R143

10ERT3 t

440V AC

PFC MOSFETDRAINRV1

1TP30

+725V DC

O/P-PFC

CS-PFC

GD-PFC

Vcc-PFC

INV-PFC

INV-PFC

CS-PFC ZCD-PFC

ZCD-PFC

GD-PFC

Vcc-PFC

UM

2765 - Rev 1

page 14/38

UM

2765Schem

atic diagrams

Figure 16. Power board - DC-DC converter

GD-HS-HB

GD-LS-HB

GD-HS-HB

GD-LS-HB

GD-SR-LS1

GD-SR-HS2

GD-SR-LS2

SOURCE-SR-HS1 SOURCE-SR-HS2

SOURCE-SR-HS1GD-SR-HS1

GD-SR-LS1

SOURCE-SR-LS1

SOURCE-SR-LS2

SOURCE-SR-HS2GD-SR-HS2

GD-SR-LS2

SOURCE-SR-LS1 SOURCE-SR-LS2

GD-SR-HS1

+725V DC

+3.3V DC

+3.3V DC

0

0

0+3.3V DC

Vcc SEC

0

Vcc SEC

0

0

0

0

+5V DC - SEC+5V DC - PRI

0

+5V-SECONDARY

+5V DC - SEC

+5V-PRIMARY

+5V DC - PRI

O/P-PFC

VDDA

+15V DC - PRI

+15V-PRIMARY

BRAKE-HB

+15V DC - PRI

+15V-PRIMARY

SD-HB

INB-LS-HB

INA-HS-HB

Vcc SECONDARY

PWM-SR-LS1

PWM-SR-HS1SD-SR-LS1-HS1

PWM-SR-HS2Vcc SECONDARY

SD-SR-LS2-HS2PWM-SR-LS2

VDDA

I-OUT MONITOR

V-OUT MONITOR

VDS-SR1 VDS-SR2

Resonant Current MONITOR

Temp. MONITOR

+3.3V

+3.3V

VDDA

Vcc SECONDARY

VDD2

Vcc SECONDARY

DC-BUS MONITORO/P-PFC

VDD2

+5V-SECONDARY

E25

Temperature

C23

Daughter Card ConnectorsPFC Output Voltage Sense w.r.t. MCU GND

470pF-0805

R4010K-0805

J14CON3

1 2 3

C60220nF-1206

R2110E-0805

L78 1

R81

2401.0004 -Magnetica

33E-0603

C281uF-1206-100V

C411uF-1206

T4107

2 12

R48

1012.0031

0E-0805

R6510K-0603

D181 2

STTH1L06A

Q4

1G

S3

D2

STW20N95DK5

R75100K-0603

C681nF-0603

R57DNM-0603

D4812

STTH1L06A

C100220pF-0603

R314.7E-0805

R3910K-0805

R9010K-0603

R185DNM-1206

C48100nF-50V-1206

C35100nF-50V-1206

C69100nF-0603

C501nF-0603

R3510K-0805

R4222 mΩ

R894.22K-0603

R4747E-0603

R43150E-0805

R346.2K-0805

R2722E-0805

R2610K-0805

D4012

STTH1L06A

R7710E-0805

R410E-1206

C40100nF-50V-1206

C108100nF-1kV

C56100pF-0603

C52100nF-0603

R18110E-1206

R5410K-0805R153

DNM-0603

C34

10uF-0805

R17922E0805

C6710uF-50V-1206

C43100pF-0603

J13CON4

1 2 3 4

R3822 mΩ

C42100nF-0805

D17

12

STTH1L06A

R2551K-0805

C25

470uF-100V

R70120E-0805

R5147E-0603

R78DNM-0603

TP101VDS-SR1

J4

1

2

PFC Output

C44100pF-0603

R9210K-0603

R634.7E-0805

R374.7E-0805

Q1

1G

S3

D2

STW20N95DK5

R294.7E-0805

R19DNM

C110220pF-0603

R61 33E-0603

R224.7E-0805

D121 2

1N4148

C5310uF-50V-1206

R5247K-1206

R18022E-0805

C4910uF-50V-1206

C374.7nF-0603

TP7 1HB-LCC Node

TP31SEC-GND

Q3

1G

S3

D2

STP100N10F7

R624.7E-0805

R910E-0603

R6947K-1206

C5110nF-0603

D4212

STPS1L60A

D4512

STPS3L60U

Q2

1G

S3

D2

STP100N10F7

C111220pF-0603

C451uF-1206

C24

470uF-100V

R45 4.7K-06031 VDD2 INA

STGAP2DM

3 INB

SD4

5 BRAKE6 VDD27 GND8 N.C. 9VH_B

10GOUT_B

1GNDISO_B

N.C. 12

13N.C.

14VH_A

15GOUT_A

16GNDISO_A

C55100pF-0603

R3210E-0805

R5047E-0603

D2112

STPS1L60A

R18210E-1206

C3210nF-0805

TP111VDS-SR2

R44150E-0805

C7010uF-50V-1206

D2212

STPS1L60A

C544.7nF-0603

D161 2

STTH1L06A

U61 LIN

L6491D

2 SD/OD3 HIN4 VCC5 DT6 SGND7 PGND

CP+ 109CP-

NC 1OUT 12HVG 1314BOOT

8LVG

D1512

STPS1L60A

C64

R60

100nF-50V-1206

33E-0603

R3051K-0805

R680E-0603

R76100K-0603

R2410K-0805

TP17

1

PRI.-GND

C6610nF-0603

R55100K-0603

D4712

1N4148

C63100nF-50V-1206

Q6

1G

S3

D2

STP100N10F7

R3322E-0805

C107DNM-0603

C581uF-1206

R59 33E-0603

R644.22K-0603

C29

-

1uF-1206-100V

+

U5

341

52

TSZ121ILT

T3

R66

2034.0002

10K-0603

R84 33E-0603

R18410E-1206

R364.7E-0805

Q5

1G

S3

D2

STP100N10F7

D131 2

1N4148

D1412

STPS1L60A

TP5

1 V-OUTPUT

C361uF-1206

C2768nF

R56100K-0603

R5810E-0805

J12

21

CON2

C46220nF-1206

R494.7K-0603

R530E-0805

C381uF-0603

U71 LIN

L6491D

2 SD/OD3 HIN4 VCCDT5

6 SGND7 PGND

CP+ 109CP-

NC 1OUT 12HVG 13BOOT 14

8LVG

R2810K-0805 J5

1

2

Output

C3110nF

R4647E-0603

C3922nF-0603

D2012

STPS1L60A

R200E-0805

J10DNM

1 2

R83 33E-0603D19

12

STTH1L06A

C33

100nF-0805

R234.7E-0805

C47100nF-50V-1206

C101220pF-0603

U4

UM

2765 - Rev 1

page 15/38

UM

2765Schem

atic diagrams

Figure 17. Power board - Aux power supply

FB-VIPER26K

FB-VIPER26K

VDD-VIPER26K

VDD-VIPER26K

5V-SEC-I/P

5V-SEC-I/P

+725V DC

+5V DC - PRI

Vcc SEC+5V-SECONDARY+5V DC - SEC

+5V DC - PRI

+15V DC - PRI

O/P-PFC

+5V-PRIMARY

Vcc SECONDARY

+15V-PRIMARY

R151K-0805

R178.2K-0805

R170220K-1206-1/2W

D61 2

STPS2200U

C18100nF-0805

U1

3VOUT

2G

ND

1

KF50BDT-TR

VIN

L6

1uH

C1092.2nF

C1922uF-35V

TP6

1

VDD-VIPER26

C17470nF-0805

R1339K-0805-1%

D111 2

STPS2200U

C7100nF-0805

C82.2uF-0805

TP1

1

Vc cSeccndary

U2

1G

ND

NC

9

2N

C

VIPer267KDTR

NC

10

NC

3

NC

1

NA

4N

C12

VDD

13D

RAI

N

NC

6

14D

RAI

N

FB7

15D

RAI

N

8C

OM

P

16D

RAI

N

C26100nF-0805

R672.2E-1206

C5722uF-35V

R17110E-1206

D46

1 2

STTH112AC11

100nF-0805

C3047uF-35V

D44

1 2

STPS2200U

D7

12

STTH112A

C1447uF-35V

R149.1K-0805-1%

C20100nF-0805

D81 2

STPS2200U

T2

85

3 10

1

2

9

1031.0015

C212.2uF-0805

C1310nF-0805

C119100uF-35V

C1021nF-2kk-1206

TP2

1

Vc cPrimary

U3

3VOUT

2G

ND

KF50BDT-TR

1 VIN

C221nF-0805

D91 2

RED LED

R1810E-1206

C102.2uF-0805

5

UM

2765 - Rev 1

page 16/38

UM

2765Schem

atic diagrams

Figure 18. Power board - MCU connector

V-Out Monitor Sensing

Reso-Current Monitor Sensing

VDS-SR1 Sensing

I-Out Monitor Sensing

DC-BUS Monitor Sensing

VDS-SR2 Sensing

Temperature Monitor Sensing

COMP_3_INP

ADC_9

COMP_1_INP/ADC_11

ADC_8ADC_7/COMP_2_INMCOMP_2_INP/ADC_12/OP-AMP_1+

ADC_5ADC_6/OP-AMP_1-

ADC_4/DIFF_ADC_2-/OP-AMP_2-ADC_3/DIFF_ADC_2+/OP-AMP_2_OUT/COMP_1_NMADC_2/DIFF_ADC_1-/OP-AMP_2+ADC_1/DIFF_ADC_1+

GPIO_4/EEV_1

PWM_7PWM_5PWM_3PWM_1

A_VDDGPIO_10/DAC_4GPIO_8/EEV_2

PWM_8PWM_6

PWM_2

+3.3V

PWM_5

PWM_6

PWM_7

PWM_8

PWM_1

PWM_2

VDS-SR1 Sensing

VDS-SR2 Sensing

ADC_4/DIFF_ADC_2-/OP-AMP_2-

COMP_1_INP/ADC_11

COMP_2_INP/ADC_12/OP-AMP_1+

ADC_7/COMP_2_INM

I-Out Monitor Sensing

DC-BUS Monitor Sensing

Temperature Monitor Sensing

Reso-Current Monitor Sensing

ADC_5

V-Out Monitor Sensing ADC_1/DIFF_ADC_1+

ADC_3/DIFF_ADC_2+/OP-AMP_2_OUT/COMP_1_NM

ADC_2/DIFF_ADC_1-/OP-AMP_2+

ADC_6/OP-AMP_1-

COMP_3_INP

ADC_8

A_VDD VDDA

GPIO_8/EEV_2

GPIO_4/EEV_1

+3.3V

GPIO_10/DAC_4

SD-HB-CONTROL

0-10V Monitor Sensing

ADC_9

PWM_3

0-10V Monitor SensingMODE_SELECTION

SD-HB-CONTROL

MODE_SELECTION

0

+3.3V DC

00

0 0

00

0

0

+3.3V DC

+3.3V DC

+3.3V DC

+3.3V DC +3.3V DC

+3.3V DC +3.3V DC

0

+3.3V DC

0

V-OUT MONITOR

VDS-SR1

I-OUT MONITOR

DC-BUS MONITOR

VDS-SR2

Resonant Current MONITOR

Temp. MONITOR+5V-SECONDARY

PWM-SR-HS2

PWM-SR-LS1

PWM-SR-HS1

PWM-SR-LS2

INB-LS-HB

INA-HS-HB

VDDA

SD-SR-LS2-HS2

SD-SR-LS1-HS1

0-10V-PWM

BRAKE-HB

SD-HB

+3.3V

0-10V-MONITOR

VDDA

SW1:1:2 CV MODE3:2 CC MODE

R1090E-0603

R94100E-0603

R961K-0603

D30

12

BAT54JFILM

R1100E-0603

R104100E-0603

R1030E-0603

R99100E-0603D27

12

BAT41JFILM

R10547E-0603

R1120E-0603

D29

12

BAT54JFILM

D26

12

BAT54JFILM

C71100nF-0603

D25

12

BAT54JFILM

R1020E-0603

D32

12

BAT54JFILM

C751.5nF-0603

R1110E-0603

R98100E-0603

R114100E-0603

R1010E-0603

R1130E-0603

R1000E-0603

R115100E-0603

C742.2nF-0603

C79470nF-0805

C78100nF-0805

D31

12

BAT54JFILM

C76470nF-0603

D24

12

BAT54JFILM

C732.2nF-0603

SW1

1 3

SPDT

2

C80100nF-0603

R95100E-0603

C772.2uF

D28

12

BAT41JFILM

C812.2uF

J8

A1A1A2A2A3A3A4A4A5A5A6

Digital Power Connector

A6A7A7A8A8A9A9A10A10A11A11A12A12A13A13A14A14A15A15A16A16A17A17A18A18A19A19A20A20A21A21A22A22A23A23A24A24A25A25A26A26A27A27A28A28A29A29A30A30A31A31

B1 B1B2 B2B3 B3B4 B4B5 B5B6 B6B7 B7B8 B8B9 B9

B10 B10B11 B11B12 B12B13 B13B14 B14B15 B15B16 B16B17 B17B18 B18B19 B19B20 B20B21 B21B22 B22B23 B23B24 B24B25 B25B26 B26B27 B27B28 B28B29 B29B30 B30B31 B31

A32A32 B32 B32

L3

C82470 Ohm100 MHz215 mA

100nF-0603

R971K-0603

R12210K-0603

R1060E-0603

C72100nF-0603

R1070E-0603

R1080E-0603 R119

10K-0603

D23

12

BAT54JFILM

Note: The microcontroller ground is referenced to the power converter secondary side. The secondary side ground of the power converter and the grounddenoted by 0 are combined on the microcontroller daughter card.The analog and control signals ground are denoted by 0 to get star ground connection and reduce switching noise interference.

UM

2765 - Rev 1

page 17/38

UM

2765Schem

atic diagrams

Figure 19. Daughter board - PFC voltage read with isolation+750V DC

+5V-PRIMARY

+5V DC - PRI

0

0

0

0

+5V-SECONDARY

+5V DC - SEC

+5V DC - SEC

O/P-PFC

DC-BUS MONITOR

DC-BUS MONITORO/P-PFC

+5V-PRIMARY

2.54mm pitchRight Angle Male

8-SMD, Gull Wing

C54100nF-0805

J13CON4

1 2 3 4

R74750K-1206

R872.2K-0805

C61100nF-0805

R808.2K-0805

J14CON3

1 2 3

R63750K-1206

R862.2K-0805

R82560E-0805

R69750K-1206

R793.9K-0805

C57150pF-0805

U81 VDD1

2 VIN+

3 VIN-

ACPL-782T-500E

4 GND1 5GND2

6VOUT-

8VDD2

7VOUT+D20

12

9.1V-1/2W

C6210nF-0805D22

12

RED LED R88160E-0805

R70750K-1206

-

+

U93

41

25

TSZ121ILT

R67750K-1206

CC6655115500ppFF--00880055

R62750K-1206

C59100nF-0805

R933.9K-0805

R73750K-1206

R8539E-0805

R71

+5V DC - PRIL2470Ohm 100MHz

750K-1206

R72750K-1206

UM

2765 - Rev 1

page 18/38

UM

2765Schem

atic diagrams

Figure 20. Control board - MCU and connector schematic

C5

A_GND

TP15R2410

29

PB11

30

PC311

PA15

A_GND

TP36

R16

I2C

1_SC

L/U

SAR

T3_R

X/C

AN_R

X

100pF

R35

8

X1

PA14

49

+3.3V

10uF

C16

1

TP13

R2810

HRTIM_CHA1

ADC2_IN5

HRTIM_CHD2

ADC

2_IN

12

22pF

DAC

2_O

UT1

PC738

U5

PC13HRTIM_EEV7/SPI1_MISO

3

0

PWM_1

+3.3V

TP8

10ADC2_IN11/OPAMP2_VINM

GND

5

ADC

1_IN

4

HRTIM_CHE1

PWM_5

HR

TIM

_EEV

1

NRST

VOUT

3VIN

I/O 3

4

C27

ADC

2_IN

5

+5V

To pull-up when used for SMBus communication

I/O 4

6R

EF3

Digital Power Connector pinout assignment for STM32F334R8T6 MCU

Jumper

+5V

I2C1_SCL/USART3_RX/CAN_RX

7

42PA10

PWM_12

DAC1_OUT2/SPI1_SCLK

HRTIM_CHB1

PA1

PB6

58

4.7k

TP14

A_GND

PA841

44PA12

ADC12_IN7

J6

1

TP28

R23

COMP4_OUT/TIM3_CH4

HRTIM_EEV1

TP25

COMP6_OUT/TIM3_CH1/TIM1_CH3N/HRTIM_EEV10

10K

48

I/O 3

4

GND

C23

PC10

552

CO

MP4

_IN

P/AD

C1_

IN11

/OPA

MP2

_VIN

P6

PB10

100pFGND

VDD

_4

PC4

24

2

I2C

1_SD

A/U

SAR

T3_T

X/C

AN_T

X

22pF

D2

TP11

+3.3V

GND

VDDA

34PB14

100nF

R34

I2C

1_SM

BA/S

PI1_

MO

SI

C15

PF0/OSC-IN6

TP20

HRTIM_FLT5

C32

HRTIM_CHB1

OSC-IN

R17

FAULT_LED

COMP_1_INP/ADC_11

+

TP32

C11

2

C20

10

PWM_8

USA

RT1

_TX

SMBus_SDA/UI_USART_TX

CAN_RX

ADC1_IN3

4.7k

I/O 1

2

2

100nF

PF1/OSC-OUT7

20

PA5

1

15

STM32F334R8T6 (LQFP64)

PA2

2

C19

TP16

R15

STAT

US_

LED

ADC12_IN6 NRST

A_GND

PB7

COMP6_INP

PB13

Red LED

R2910

100nF50

PB0

54

10

I/O 1

2

TP5

0R37

C7

GND

TP2

R19

VDDA/VREF+

Green LED

2

ADC1_IN1

HRTIM_CHE2COMP_2_INP/ADC_12/OP-AMP_1+

ADC_8

GND

GND

C22

PC8

19

R2510

HR

TIM

_SC

OU

T

HRTIM_EEV2

1

ADC1_IN1

5

1

6

HRTIM_CHC2

OSC-OUT

SWCLK

PWM_4

TP33

I/O 4

6R

EF3

PA6

3

Note: Keep ADC traces as short as possible to connector P1

ANALOG INPUT FILTERS

VOLTAGE REGULATOR

GPIO_5/DAC_1/COMP_4_INP/SPI_NSS

10 HRTIM Outputs on STM32F334

C18

TIM

3_ET

R

TP4

USART1_TX

REF

2

PWM_11

+3.3V

GND

TP19

I/O 3

4

+3.3V

DAC

1_O

UT2

/SPI

1_SC

LK2

DA108S1

5R

EF4

COMP2_INP/ADC2_IN4

3

VDDA

VDDA

10

100nF

VDD

_164

GPIO_2/COMP_2_OUT/GP_PWM_2VBAT

I/O 2

3

1

TP12

DA3

+3.3V

51PC

11

100uF

A_GND

VDDA

PC210

I2C1_SDA/USART3_TX/CAN_TX

GND

PWM_2

12

A_GND

2

ADC12_IN6

VSS_3

TP31

R21

0

TP26

R2610

VDDA

MCU_USART_TX

100pF

HRTIM_CHE2

TP10

HRTIM_CHA2

100pF

HRTIM_CHE1

100pF

R2210

2

ADC_6/OP-AMP_1-

HR

TIM

_EEV

2

10

100pF

TP9

ADC1_IN3

PWM_7

DA108S1

A_GND

SMBus_SMBA/SPI_MOSI

8R

EF1

HRTIM_CHC1

ADC12_IN8

2

100pFJ5

1

GND

16

GND CONStripline male 2x1 2.54mm

PA3

TP22

ADC12_IN7

Blue LED

100pF

LD1117

1GND

EXT SUPPLY


REF

3

7

59PB

8

TP29

C29

PB1

7

PB1233

GND

47

VSS_

231

GND

100pF

TP1

1 470n

F

32VD

D_2

TP23

100pF

SWC

LK

TP3

R33

+3.3V

ADC_7/COMP_2_INM

ADC_9

100

VSS_

418

52PC

1253

HR

TIM

_EEV

7/SP

I1_M

ISO

+3.3V

R3210

GND

TP35

REF

4

8R

EF1

J7

TP6

SWDIO

TP37

ADC_1/DIFF_ADC_1+

ADC_2/DIFF_ADC_1-/OP-AMP_2+

ADC_3/DIFF_ADC_2+/OP-AMP_2_OUT/COMP_1_NM

C30

100pF

2

100nF

7R

EF2

I/O 4

6

1.5 Ohm 215 mA

C31

J3

61PB

9

MCU_USART_RX


USART1_RX

ADC1_IN2

TP27

U4

PWM_10

I/O 2

3

C10100nF

C28

7

GND

TP17

R36

VSS_

1D

AC1_

OU

T1/S

PI1_

NSS

22

PA7

23

DA2

8MHz HC49/US

ADC1_IN4

C26

1

A_GND

28PB

3C

OM

P4_O

UT/

TIM

3_C

H4

2

SWD - USER COMMUNICATION

COMP_3_INP

PC13

8PC0

GND1

PWM_3

C12

C25

C13

REF

11

PC19

A_GND


1

36

45PA1346

PB4

PC637

+3.3V

GPIO_6/DAC_2/SPI_SCLKGPIO_7/DAC_3/OP-AMP_1_OUT

GPIO_8/EEV_2GPIO_9/EEV_3/SPI_MISO

GPIO_10/DAC_4

HRTIM_CHA2

COMP2_OUT/HRTIM_FLT1

COMP2_OUT/HRTIM_FLT1

TIM

2_ET

R

A_GND

39PC940

SWDIO

DAC1_OUT1/SPI1_NSS

DAC2_OUT1

4

R18

C17

ADC_10

HRTIM_CHD1

100pF

R27

100uF

R312

SWD/COM

R3010

HRTIM_CHD2

PWM_6

TP24

DA1

I2C1_SMBA/SPI1_MOSI

HRTIM_CHA1

5R

EF4

C24

HRTIM_CHB2

TP18

FAULT_LED

C14

I/O 2

3

+

+5V

PC14/OSC32_IN4

C8

4th DAC channel not available

100nF

U3

ADC12_IN8

A_GND

GND

+3.3VA_VDD

I2C1_SMBA

SMBus_SCL/UI_USART_RX

43PA11COMP4_INP/ADC1_IN11/OPAMP2_VINP

HRTIM_CHB2

REF

2

GPIO_1/COMP_3_OUT/GP_PWM_1/EEV_4

56PB

557

I/O 1

2

A_GND

+5V

VDDA

STATUS_LED

D3

86

PB2

PA9

12VSSA/VREF-

100nF

CO

MP6

_IN

P

C9

TIM

2_C

H3

HRTIM_CHD1

+3.3V17

PA4

VDD_3

HRTIM_FLT5

HRTIM_CHC2

GND

D1

10

PC5

5

C6

TP21

C33PD

2

L1

PC15/OSC32_OUT5

GND

J4

100nFTP34

35PB15

10

C21

ADC2_IN12

ADC1_IN2

HRTIM_CHC1

TP7

100pF

PC13

COMP6_OUT/TIM3_CH1/TIM1_CH3N/HRTIM_EEV10

10nF

1+

CO

MP2

_IN

P/AD

C2_

IN4

ADC

2_IN

11/O

PAM

P2_V

INM

2

GND

9

CAN_TX

NRST

PA014

DA108S1

ADC_5

PWM_9

8

13

63

GND

ADC_4/DIFF_ADC_2-/OP-AMP_2-

BAR43S

USA

RT1

_RX

21


R20

0 FAULT_1

GPIO_3/COMP_1_OUT/FAULT_2GPIO_4/EEV_1

62

VDDA

60BO

OT0

TP30

GND

25B

7A7A

GPIO_6/DAC_2/SPI_SCLKGPIO_8/EEV_2GPIO_10/DAC_4

+5V

14B

15A

26A

27A

31A

21B

22A

18B

19A

9B

4A4B

GND

20A20B

27A

28A

Digital Power Connector

25A25B

GND_iso

GPIO_1/COMP_3_OUT/GP_PWM_1/EEV_4

PWM_10PWM_12GPIO_3/COMP_1_OUT/FAULT_2

19A19B

USART_TX_iso

28A

29A

CAN_TXSMBus_SCL/UI_USART_RXSMBus_SDA/UI_USART_TX

2B

15B

16A

ADC_7/COMP_2_INM

GND

7B7B

P1

23B

24A

9B

10A

4A

23A23B

17B

18A

+3.3V_iso

29A

30A 31B

32B

6A6B

6B

22B

23A

GPIO_7/DAC_3/OP-AMP_1_OUTGPIO_9/EEV_3/SPI_MISO

ADC_1/DIFF_ADC_1+

10A10B

2A2A

12A12B

26B

3B3B

24A24B

18A18B

30A

32A

17A17B

+3.3V

USART_RX_iso

ADC_2/DIFF_ADC_1-/OP-AMP_2+ADC_3/DIFF_ADC_2+/OP-AMP_2_OUT/COMP_1_NM

15A15B

A_GND

10B

11A

FAULT_1PWM_1

2B1A

1A

16A16B

28B

30B

11A11B

26B

29B

8A8A

20B

21A

13A13B

5B

6ASMBus_SMBA/SPI_MOSI

24B

25A

32A 31B

14A14B

3A

COMP_1_INP/ADC_11COMP_3_INP

22A22B

30B

26A 27B

28B

32B31A

19B

20A

5B

11B

12A

A_VDD

8B8B

12B

13A

1B1B

ADC_4/DIFF_ADC_2-/OP-AMP_2-ADC_5

ADC_6/OP-AMP_1-COMP_2_INP/ADC_12/OP-AMP_1+

ADC_8ADC_9

ADC_10

PWM_2PWM_4PWM_6PWM_8

CAN_RX

PWM_3PWM_5PWM_7PWM_9 13B

14A

3A

21A21B

GPIO_4/EEV_1GPIO_5/DAC_1/COMP_4_INP/SPI_NSS

29B27B

4B

5A5A

PWM_11GPIO_2/COMP_2_OUT/GP_PWM_2

9A9A

16B

17A

Note: The microcontroller ground is referenced to the power converter secondary side.On the microcontroller schematic, the ground symbol is denoted by GND and A_GND (Analog Signal Ground). Different symbols have been usedfor better PCB layout. Both GND and A_GND are combined on the microcontroller at R37.

UM

2765 - Rev 1

page 19/38

UM

2765Schem

atic diagrams

Figure 21. Control board - opto-isolated communication

5

TO PLACE ON THE RIGHT AND ON THE LEFT SIDE OF THE BOARD RESPECTIVELY

U2

MCU_USART_RX

USART_RX_iso

15pF

R3

USART_TX_iso6

GND

R10820

J1 J2

SHIELD

0 N.M

R447

GND_iso

100nF

0

R5

C3

GND

0 N.M.

R6

+3.3V_iso

R12

1

6

+3.3V_iso

SHIELD

7

GND_iso

0 N.M.

R1147GND

USART_RX_iso

OPTOCOUPLERS

CONNECTION BETWEEN TWO CONTROL BOARDS

820R2

GND

0 N.M

C2

15pF

MCU_USART_RX

7

USART_CON

8

R13

1234

MCU_USART_TX

C4

3

2 USART_RX_iso

1

C1

4

+3.3V_iso

8

100nF

R10

R939

R14

5

GND_iso

0R7

USART_RX_iso

PS9821

GND

39

MCU_USART_RX

GND_iso

GND_iso

0

+3.3V

GND

+3.3V

4

+3.3V_iso

MCU_USART_TX

MCU_USART_TX

GND_iso

USART_TX_iso

USART_TX_iso

1234

USART_CON

PS9821

+3.3V

USART_TX_iso

2

3

U1

R8

UM

2765 - Rev 1

page 20/38

UM

2765Schem

atic diagrams

Figure 22. Adapter board

24681

JTDI_JTAG_ADPJTMS_ADP

R3

100nF 25V

P1T1OUT

1411

1917

T1IN

GND

JP_JTDI

100nF

J3

I2C_SMBA

GND

J1

I2C_SMBA

2

C&K KMR221GLFSFarnell: 1201424

JTDO_ADP

DB9-Female

SG

Jtag conn.

3

GND

11

+3.3V

CAN_RX

C2-5

3

1

JTMS_ADP

100nF 25V

1

RESET#_BTN

10

1

R2OUTC7

JTAG

RESET BUTTON

4

I2C_SCL/USART_RX/CAN_RXI2C_SDA/USART_TX/CAN_TX 3

GND

C2+4

2x stripline male 3+1 2.54mmpin 4 can be connected with pin 1, 2 or 3 with a jumper

162738495

+3.3V

GND

4

R50

V+2

R4

1

USART_RXR2

2

USART_TX

120

6CANL

GND

3C1-

GND

+3.3V

9

10k

GND

DB9-Male

5NC1

+3.3V

J9

4.7k

CAN_RX

13579

CAN_TX

I2C_SDA/USART_TX/CAN_TX

R4

100nF 25V

U1

J7

+3.3V

20

RESET#_ADP

T2IN10

7CANH

R1

SMBUS_SDA

S1RST

C & KKMR221GLFS

100nF 25V

C3

J2

10

2

3

+3.3V

place reset button in the external part of the board

N.M.

15

C8

Digikey401-1427-1-ND

JTCK_ADP

U2

9

2

C5

6

NC8

P2

18

C+1

4

12R1OUT

+3.3V

CAN_TX

1

SWD/COM

J8

7JTCK_ADP

R6

ST3232CTR

GND

SMBUS_SCL

USAR

T_RX

1

R1IN13

GND2

GND15

SN65HVD232D

C6

5

RESET#_ADP

SMBUS_SDA

RESET#_BTN

7

1416

100nF 25V

C4

8

+3.3V

2

GND

SMBUS

Stripline male 3x2 2.54mm

C1

USER COMMUNICATION CONFIG

RS:461-9771

GND

CAN COMMUNICATION

+3.3V

GND

GND

D1

8R2IN

0

Male Connector 2x10Pitch 2.54 mmTyco Electronics 2 -1634688-0RS: 473-8282Farnell: 8395942

TD

RD

J10 as close as possible to j12 pin 10

12

VCC3

V-6

4.7k

I2C_SCL/USART_RX/CAN_RX

T2OUT

VCC16

52

GND

4

CAN

RS-232

USAR

T_TX

SERIAL COMMUNICATION

1113

C2

J6

100nF 25V

6

100nF 16V

162738495

GND

SMBUS_SCL

SWD - USER COMMUNICATION

UM

2765 - Rev 1

page 21/38

UM

2765Schem

atic diagrams

6 Bill of materials

6.1 Power board

Table 6. Power board bill of materialsThis board is marked STEVAL-LLL009M1 and can only be ordered with the STEVAL-LLL009V1 kit

Item Q.ty Ref. Part / Value Description Manufacturer Order code

1 2 U1, U3 5V, 500mA Low drop voltageregulators, DPAK ST KF50BD-TR

2 1 U2 1050V High voltageconverter, SO16N ST VIPER267KDTR

3 1 U4 4A Isolated Half-Bridgegate driver, SO-16 ST STGAP2DMTR

4 1 U5 - Operationalamplifier, SOT23-5 ST TSZ121ILT

5 2 U6, U7 4AHigh voltage highand low-side gatedriver, SO-14

ST L6491DTR

6 1 U10 -Transition-modePFC controller,SO-8

ST L6562ATDTR

7 1 U11 1A Low-side gatedriver, SOT23-5 ST PM8841D

8 2 Q1, Q4 950V N-channelMOSFET, TO-247 ST STW20N95DK5

9 4 Q2, Q3, Q5, Q6 100V N-channelMOSFET, TO-220 ST STP100N10F7

10 1 Q7 950V N-channelMOSFET, TO-247 ST STW20N95K5

11 1 Q13 2kV NPN Darlingtontransistor, TO-220 ST STP03D200

12 6 D14, D15, D20,D21, D22, D42 60V, 1A Schottky rectifier,

SMA ST STPS1L60A

13 8D23, D24, D25,D26, D29, D30,D31, D32

40V, 300mA Schottky diode,SOD323 ST BAT54JFILM

14 2 D27, D28 100V, 200mA Schottky diode,SOD-323 ST BAT41JFILM

15 1 D34 1200V, 5A Ultrafast recoverydiode, DPAK ST STTH512B-TR

16 4 D6, D8, D11,D44 200V, 2A Power Schottky

diode, SMB ST STPS2200U

17 1 D33 1200V, 2A High Voltage diode,SMB ST STTH212U

18 2 D7, D46 1200V, 1A Ultrafast rectifier,SMA ST STTH112A

19 6 D16, D17, D18,D19, D40, D48 600V, 1A

Ultrafast highvoltage rectifier,SMA

ST STTH1L06A

UM2765Bill of materials

UM2765 - Rev 1 page 22/38

https://www.st.com/en/product/kfxx?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/viper26k?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/stgap2d?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/tsz121?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/l6491?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765


https://www.st.com/en/product/PM8841?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/stw20n95dk5?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/stp100n10f7?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/stw20n95k5?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/stp03d200?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/stps1l60?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/bat54?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/bat41?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/stth512?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765

https://www.st.com/en/product/stps2200?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765



https://www.st.com/en/product/stth1l06?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765


20 1 D45 60V, 3A Power Schottkyrectifier, SMB ST STPS3L60U

21 2 Q11, Q14 80V, 500mA NPN Transistor,SOT-23

ONSemiconductor SMMBTA06LT1G

22 8D1, D4, D12,D13, D36, D37,D39, D47

75V, 200mA Switching Diode,DO - 213AA

MicrosemiCorporation 1N4148UR-1

23 1 D2 12V, 500mW,±5%

Zener Diode,SOD123 Any Any

24 1 D3 3.6V, 500mW,±5%


25 1 D9 RED, 30mA Indication RedLED, SMD 0805 Any Any

26 1 D35 1000V Bridge Rectifier,Through Hole

ComchipTechnology GBU1510-G

27 1 D38 18V, 500mW,±5%


28 1 D43 15V, 500mW,±5%


29 1 D41 (notmounted) - SOD123, (not

mounted) - -

30 2 C1, C2 1nF, 2kV, ±10%High VoltageCeramic Capacitor,SMD 1210

AVXCorporation 1210GC102KAT1A

31 13

C3, C4, C5, C7,C11, C18, C20,C26, C33, C42,C78, C92, C103

100nF, 50V orabove, ±10%

Ceramic Capacitor,X7R, SMD 0805 Any Any

32 3 C8, C10, C21 2.2µF, 25V orabove, ±10%


33 4 C9, C50, C68,C98



34 1 C90 10nF, 100V orabove, ±10%


35 2 C13, C32 10nF, 50V orabove, ±10%


36 2 C14, C30 47µF, 35V orabove, ±20%

ElectrolyticCapacitor, 105°C,Through Hole 5mmPitch

Any Any

37 2 C16, C34 10µF, 25V orabove, ±10%


38 2 C17, C79 470nF, 25V orabove, ±10%


39 3 C19, C57, C96 22µF, 35V orabove, ±20%

ElectrolyticCapacitor, SMD,Length: 5.8 mm,Height: 6.1 mm

Panasonic EEE-FT1V220AR

40 1 C22 1nF, 25V orabove, ±10%


UM2765Power board

UM2765 - Rev 1 page 23/38

https://www.st.com/en/product/STPS3L60?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765


41 2 C24, C25 470µF, 100V orabove, ±20%

ElectrolyticCapacitor, 105°C,Through Hole7.5mm Pitch

Any Any

42 1 C27 68nF, 630V,±5%

Film Capacitor,Through Hole15mm Pitch

EPCOS / TDK B32672L6683J189

43 3 C28, C29, C106 1µF, 100V orabove, ±10%


44 4 C36, C41, C45,C58

1µF, 35V orabove, ±10%


45 1 C31 10nF, 2kV, ±5%Film Capacitor,Through Hole22.5mm Pitch

EPCOS / TDK B32653A8103J

46 2 C37, C54 4.7nF, 25V orabove, ±10%


47 1 C38 1µF, 25V orabove, ±10%


48 1 C93 2.2µF, 25V orabove, ±10%


49 1 C23 470pF, 25V orabove, ±5%


50 1 C39 22nF, 25V orabove, ±10%


51 4 C43, C44, C55,C56

100pF, 50V orabove, ±10%


52 2 C46, C60 220nF, 50V orabove, ±10%


53 6 C35, C40, C47,C48, C63, C64



54 4 C49, C53, C67,C70

10µF, 50V orabove, ±10%


55 1 C94 220nF, 50V orabove, ±10%


56 8C52, C69, C71,C72, C80, C82,C95, C104



57 1 C76 470nF, 50V orabove, ±10%


58 3 C51, C66, C97 10nF, 50V orabove, ±10%


59 1 C75 1.5nF, 50V orabove, ±10%


60 2 C73, C74 2.2nF, 25V orabove, ±10%


61 2 C77, C81 2.2µF, 16V orabove, ±20%

ElectrolyticCapacitor, SMD,Length: 5.4 mm,Height: 3.3 mm

Nichicon UWT1V2R2MCL2GB

62 2 C84, C85 100nF-X2, 440VAC, ±10%

Film Capacitor,Through Hole22.5mm Pitch

KEMET PHE844RD6100KR06L2

UM2765Power board

UM2765 - Rev 1 page 24/38


63 1 C86 680nF, 530VAC, ±20%


EPCOS / TDK B32914A5684M

64 1 C88 47nF-X2, 440VAC, ±10%


KEMET R474N24705001K

65 2 C89, C91 270µF, 450V,±20%

ElectrolyticCapacitor, ThroughHole 10mm Pitch

Nichicon LGM2W271MELB25

66 4 C100, C101,C110, C111

220pF, 50V orabove, ±10%


67 1 C102 1nF, 2kV, ±20% Ceramic Capacitor,SMD 1206 Yageo CC1206MKX7RDBB102

68 1 C108 100nF, 1kV,±10%

Ceramic Capacitor,Through Hole 5mmPitch

MurataElectronics RDER73A104K5B1H03B

69 1 C119 100µF, 35V,±20%

ElectrolyticCapacitor, 105°C,Through Hole 5mmPitch

Any Any

70 1 C109 2.2nF, 440VAC, ±20%

Safety CeramicDisc Capacitor,Through Hole 5mmPitch

Vishay / BCComponents VY2222M35Y5US6TV5

71 2 C83, C87 (notmounted) -

Through Hole10mm Pitch, (notmounted)

- -

72 2 C99, C107 (notmounted) - SMD 0603, (not

mounted) - -

73 1 R1 680E, 1/8W,±1%

Metal Film Resistor,SMD 0805 Any Any

74 1 R2 24K, 1/8W, ±1% Metal Film Resistor,SMD 0805 Any Any

75 9R3, R24, R26,R28, R35, R39,R40, R54, R121

10K, 1/8W, ±1% Metal Film Resistor,SMD 0805 Any Any


77 1 R5 510E, 1/10W,±5%



79 1 R14 9.1K, 1/8W,±1%



81 1 R17 8.2K, 1/8W,±1%


82 5R18, R171,R181, R182,R184

10E, 1/4W, ±1% Metal Film Resistor,SMD 1206 Any Any

83 1 R70 120E, 1/4W,±1%


UM2765Power board

UM2765 - Rev 1 page 25/38


84 6R21, R32, R58,R77, R154,R183


85 2 R25, R30 51K, 1/8W, ±1% Metal Film Resistor,SMD 0805 Any Any

86 5R27, R33,R152, R179,180


87 8R22, R23, R29,R31, R36, R37,R62, R63

4.7E, 1/8W,±1%


88 1 R34 6.2K, 1/8W,±1%


89 2 R38, R42 22mΩ, 2W, ±1%Current SenseResistor, SMD2512

TEConnectivity /Holsworthy

RLP73M3AR022FTDF

90 1 R41 0E, 1/4W, ±1% Metal Film Resistor,SMD 1206 Any Any

91 2 R43, R44 150E, 1/8W,±1%

Metal Film Resistor,SMD 0805 Any -

92 1 R139 100E, 1/8W,±1%


93 1 R151 6.2K, 1/10W,±1%


94 3 R45, R49, R149 4.7K, 1/10W,±1%


95 5 R46, R47, R50,R51, R105

47E, 1/10W,±1%


96 4 R20, R48, R53,R120 0E, 1/8W, ±1% Metal Film Resistor,

SMD 0805 Any -

97 2 R52, R69 47K, 1/4W, ±5% Metal Film Resistor,SMD 1206 Any -

98 5 R55, R56, R75,R76, R178

100K, 1/10W,±1%


99 6 R59, R60, R61,R81, R83, R84

33E, 1/10W,±1%


100 3 R64, R89, R172 4.2K, 1/10W,±1%


101 8

R65, R66, R90,R92, R119,R122, R144,R155

10K, 1/10W,±1%


102 1 R67 2.2E, 1/4W,±1%


103 7R94, R95, R98,R99, R104,R114, R115

100E, 1/10W,±1%


104 3 R96, R97, R150 1K, 1/10W, ±5% Metal Film Resistor,SMD 0603 Any -

UM2765Power board

UM2765 - Rev 1 page 26/38


105 14

R68, R91,R100, R101,R102, R103,R106, R107,R108, R109,R110, R111,R112, R113

0E, 1/10W, ±1% Metal Film Resistor,SMD 0603 Any -

106 4 R116, R123,R131, R136

470K, 1/4W,±1%


107 9

R117, R118,R127, R130,R132, R137,R145, R146,R170

220K, 1/4W,±1%


108 4 R124, R128,R133, R140

820K, 1/4W,±1%


109 4 R129, R134,R141, R147 51K, 1/4W, ±1% Metal Film Resistor,

SMD 1206 Any -

110 2 R135, R138 0.47E, 1W, ±1%Current SenseResistor, SMD2512

Yageo -

111 1 R142 100K, 1/8W,±1%


112 1 R143 18K, 1/10W,±1%


113 1 R148 47K, 1/10W,±1%


114 3 R173, R174,R175 1M, 1/4W, ±1% Metal Film Resistor,

SMD 1206 Any -

115 1 R176 220K, 1/8W,±1%


116 1 R177 2.2K, 1/8W,±1%


117 2 R19, R185 (notmounted) - SMD 1206, (not

mounted) - -

118 3 R57, R78, R153(not mounted) - SMD 0603, (not

mounted) - -

119 1 L3 470Ω 100MHz,250mA, ±25%

Ferrite Bead, SMD0402

WurthElectronics -

120 1 L4 100µH, ±20%Common ModeChoke / Filter,Through Hole

WurthElectronics -

121 1 L5 2.2mHCommon ModeChoke / Filter,Through Hole

WurthElectronics -

122 1 L6 1µH, ±10% Fixed Inductor,Through Hole ABRACON -

123 1 L7 - LCC Inductor,Through Hole AQ Magnetica -

124 1 T1 -0-10V IsolationTransformer,Through Hole

WurthElectronics -

UM2765Power board

UM2765 - Rev 1 page 27/38


125 1 T2 -FlybackTransformer,Through Hole

AQ Magnetica -

126 1 T3 -Current SenseTransformer,Through Hole

AQ Magnetica -

127 1 T4 - LCC Transformer,Through Hole AQ Magnetica -

128 1 T5 - PFC Transformer,Through Hole AQ Magnetica -

129 1 F1 2A Fuse, Through Hole Bel Fuse -

130 1 J1 -

Connector 0-10VInput, FixedTerminal Block - 2Position, ThroughHole 5mm Pitch

PhoenixContact -

131 1 J4 (notmounted) -

PFC Output,Through Hole10mm Pitch, (notmounted)

- -

132 1 J5 -Output Connector,Through Hole7.5mm Pitch

PhoenixContact -

133 1 J8 -Power Control CardConnector, ThroughHole

ERNI -

134 1 J9 265-525V ACInput Connector ,Through Hole10mm Pitch

282858-3 -

135 1 J10 (notmounted) - Through Hole, (not

mounted) - -

136 1 J12 Connector 2x1

2.54mm PitchBerg Stick Male,Through Hole2.54mm Pitch

Any -


2.54mm PitchBerg Stick Female,Through Hole2.54mm Pitch

Any -


2.54mm PitchBerg Stick Female,Through Hole2.54mm Pitch

Any -

139 1 RT1 0.05A 30V, 30VDC

PTC ResettableFuse, SMD Bourns -

140 1 RT3 10EInrush CurrentLimiter, ThroughHole 7.5mm Pitch

EPCOS / TDK -

141 1 SW1 12 VDC Slide Switches,Through Hole EAO -

142 1 RV1 440V AC Varistor, ThroughHole EPCOS / TDK -

UM2765Power board

UM2765 - Rev 1 page 28/38


143 8

MH1, MH2,MH3, MH4,MH5MH6, MH7,MH8

Mounting Holes,Spacer andScrew

Spacers (M3x12),Screw (M3x6) ,Through Hole

- -

144 1 TP1 Vcc Secondary Test Point, ThroughHole Any -

145 1 TP2 Vcc Primary Test Point, ThroughHole Any -

146 1 TP3 SEC.-GND Test Point, ThroughHole Any -

147 1 TP4 DC-BUS V-OUTPUT PFC

Test Point, ThroughHole Any -

148 1 TP30 PFC MOSFETDRAIN


149 1 TP31 PFC MOSFETGATE DRIVE


150 1 TP35 PFC ControllerVcc


151 1 TP5 V-OUTPUT Test Point, ThroughHole Any -

152 1 TP6 VDD-VIPER26K Test Point, ThroughHole Any -

153 1 TP7 HB-LCC Node Test Point, ThroughHole Any -

154 1 TP10 NODE VDS-SR1


155 1 TP11 NODE VDS-SR2


156 1 TP17 (notmounted) - Test Point, Through

Hole, (not mounted) - -

157 1 TP36 PRI.-GND Test Point, ThroughHole Any -

158 1 Heat-Sink (Q1,Q7, Q4)

3mmThickness,54mm x 25mm

Aluminium HeatSink (Anodized), 3-Holes

- -

159 1 Heat-Sink (Q5,Q2, Q6, Q3)

3mmThickness,60mm x 25mm

Aluminium HeatSink (Anodized), 4-Holes

- -

160 3 Isolation Pad(Q1, Q7, Q4)

Heat-Sink (Q1,Q7, Q4),TO-247

Thermal Pad Wakefield-Vette -

161 4Isolation Pad(Q5, Q2, Q6,Q3)

Heat-Sink (Q5,Q2, Q6, Q3),TO-220

Thermal Pad Wakefield-Vette -

162 3 Screw and Nut(Q1, Q7, Q4)

Heat-Sink (Q1,Q7, Q4),TO-247

Screw (M3x12), Nut(M3) Any -

163 4Screw and Nut(Q5, Q2, Q6,Q3)


Screw (M3x10), Nut(M3) Any -

164 4 Bush (Q5, Q2,Q6, Q3)


Bush TO-220 MULTICOMP -

UM2765Power board

UM2765 - Rev 1 page 29/38

6.1.1 Daughter board

Table 7. Daughter board bill of materialsThis board is marked STEVAL-LLL009D1 and can only be ordered with the STEVAL-LLL009V1 kit


1 1 U9 - Operationalamplifier, SOT23-5 ST TSZ121ILT

2 1 U8 - Optically IsolatedAmplifier, SMD

Broadcom /Avago ACPL-782T-500E

3 3 C54, C59, C61 100nF, 50V orabove, ±10%


4 2 C57, C65 150pF, 50V orabove, ±10%


5 1 C62 10nF, 50V orabove, ±10%


6 1 D20 9.1V, 500mW,±5%


7 1 D22 RED, 30mA Indication RedLED, SMD 0805 Any Any

8 1 J14 Connector 3x12.54mm Pitch BergStick Right AngleMale, Through Hole

Any Any

9 1 J13 Connector 4x12.54mm Pitch BergStick Right AngleMale, Through Hole

Any Any

10 1 L2 470Ω 100 MHz,250mA, ±25%

Ferrite Bead, SMD0402

WurthElectronics 7427927141

11 9R62, R63, R67,R69, R70, R71,R72, R73, R74

750K, 1/4W,±1%


12 1 R82 560E, 1/8W,±1%


13 2 R79, R93 3.9K, 1/8W,±1%


14 1 R80 6.8K, 1/8W,±1%


15 1 R85 39E, 1/8W, ±1% Metal Film Resistor,SMD 0805 Any Any

16 2 R86, R87 2.2K, 1/8W,±1%


17 1 R88 160E, 1/8W,±1%


6.2 Control board

Table 8. Control board bill of materialsThis board is marked STEVAL-DPS334C1 and can only be ordered with the kit

Item Q.ty Ref. Part/Value Description Manufacturer Order code

1 2 C1, C4 15pF 25V ±10% Capacitor CeramicXR7 Any -

UM2765Control board

UM2765 - Rev 1 page 30/38

https://www.st.com/en/product/tsz121?ecmp=tt9470_gl_link_feb2019&rt=um&id=UM2765


2 11

C2, C3, C7, C8,C10, C12, C13,C14, C15, C18,

C33

100nF 25V±10%

Capacitor CeramicXR7 Any -

3 2 C5, C6 22pF 25V ±10% Capacitor CeramicXR7 Any -

4 2 C9, C11 100µF 16V±20% ELEC CAP PANASONIC EEEFT1C101AR

5 1 C16 10µF 16V ±10% Tantalium Capacitor KEMET T491B106K010AT

6 1 C17 10nF 25V ±10% Capacitor CeramicXR7 Any -

7 1 C19 470nF 25V±10%


8 13

C20, C21, C22,C23, C24, C25,C26, C27, C28,C29, C30, C31,

C32

100pF 25V±10%


9 3 DA1, DA2, DA3 - Diode array ST DA108S1

10 1 D1 - LED diode Kingbright KP-1608CGCK

11 1 D2 - LED diode Kingbright KP-1608QBC-D

12 1 D3 - LED diode Kingbright KP-1608 SRC-PRV

13 2 J1, J2 - Through HoleVertical 1.27mm TE Connectivity 7-215079-4

14 1 J3 - - PhoenixContact 1725656

15 3 J4, J5, J6 - Strip Line Male 2X1pitch 2, 54mm Any -

16 1 J7 - - HARTING 9185106324

17 1 L1 470 Ω 100MHz250 mA - WURTH

ELEKTRONIK 7427927141

18 1 P1 -Male DIN 41612Through Hole 90degree

Erni 533406

19 5 R1, R12, R20,R21, R37 0 1/16W ±1% SMD Thick Film

Resistor Any -

20 2 R2, R10 820 1/16W ±1% SMD Thick FilmResistor Any -



23 2 R5, R7 0 750mW ±5% SMD Thick FilmResistor Vishay CRCW20100000ZOEF

24 2 R6, R8 0Ω 750mW±5%

SMD Thick FilmResistor Any -

25 2 R13, R14 0Ω 750mW±5%


26 1 R15 100 1/16W ±1% SMD Thick FilmResistor Any -

UM2765Control board

UM2765 - Rev 1 page 31/38

http://st.com/en/product/da108s1


27 14

R16, R22, R23,R24, R25, R26,R27, R28, R29,R30, R31, R32,

R33, R34

10 1/16W ±1% SMD Thick FilmResistor Any -

28 1 R17 86.6 1/16W±1%



30 1 R19 10K 1/16W ±1% SMD Thick FilmResistor Any -

31 2 R35, R36 4.7k 1/16W±1%


32 37

TP1, TP2, TP3,TP4, TP5, TP6,TP7, TP8, TP9,

TP10, TP11,TP12, TP13,TP14, TP15,TP16, TP17,TP18, TP19,TP20, TP21,TP22, TP23,TP24, TP25,TP26, TP27,TP28, TP29,TP30, TP31,TP32, TP33,TP34, TP35,TP36, TP37

- Test Point Any -

33 2 U1, U2 - Optocoupler 1chanel NEC PS9821-1-F3-AX

34 1 U3 - LDO 5V/3.3V ST LD1117DT33TR

35 1 U4 - 32 bitmicrocontroller ST STM32F334R8T6

36 1 U5 - Small SignalSchottky Diode ST BAR43ASFILM

37 1 X1 - 8MHz CristalOscillator EUROQUARTZ

8.000MHZ49USMX/30/50/40/18PF/ATF

37 1

10 positioncable assembly

rectangularsocket to socket

female

-Flat cable 10pin female-female2.54mm

Samtec Inc. HCSD-05-D-11.40-01-N-G-R

38 1

Micro-Match 4ways, 9.9"",

250mm,1.27mm

- AMP Micro-MaTch TE Connectivity 1483350-3

6.2.1 Adapter board

Table 9. Adapter board bill of materialsThis board is marked STEVAL-DPSADP01 and can only be ordered with the kit

UM2765Control board

UM2765 - Rev 1 page 32/38

http://st.com/en/product/ld1117

http://st.com/en/product/stm32f334r8

http://st.com/en/product/bar43

Item Q.ty Ref. Part/Value Description Manuf. Order code

1 8 C1, C2, C3, C4,C5, C6, C7, C8

100nF 25V±10%


2 1 J2 - Stripline male 3x22.54mm Any -

3 1 J3 - JTAG connector TE-Connectivity 5103308-5

4 2 J6, J7 - Jumper pitch 2, 54mm Any -

5 1 J8 - Stripline Male 2X1pitch 2, 54 mm Any -

6 2 J9, J11 - Stripline Male 3X1pitch 2, 54 mm Any -

7 1 J10 - Prog Connector HARTING 9185106324

8 1 P1 - 90° Through Hole TE-Connectivity 1-1634584-2

9 1 P2 - 90° Through Hole RS-Pro -

10 2 R1, R2 4.7k 1/16W±1%


11 1 R3 10k 1/16W ±1% SMD Thick FilmResistor Any -



14 1 R6 1/16W ±1% (notmounted)


15 1 S1 - Surface MountTactile Switch TE-Connectivity FSM4J (L=5.0MM)

16 1 U1 - RS-232 transceiver ST ST3232CTR

17 1 U2 - CAN transceiver TI SN65HVD232D

UM2765Control board

UM2765 - Rev 1 page 33/38

http://st.com/en/product/st3232c

Revision history

Table 10. Document revision history

Date Version Changes

11-Dec-2020 1 Initial release.

UM2765

UM2765 - Rev 1 page 34/38

Contents

1 STEVAL-LLL009V1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.1 Startup and safety mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 STEVAL-LLL009V1 kit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.1 Main power board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1.1 Power factor correction (PFC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1.2 DC-DC power stage based on half-bridge LCC topology . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1.3 Synchronous rectification (SR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1.4 Analog dimming control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 PFC Output voltage sensing daughter board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Microcontroller control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.4 Programming interface with ST-LINK board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3 Firmware implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

4 STEVAL-LLL009V1 layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

6 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

6.1 Power board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.1.1 Daughter board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.2 Control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.2.1 Adapter board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

UM2765Contents

UM2765 - Rev 1 page 35/38

List of figuresFigure 1. STEVAL-LLL009V1 evaluation kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Figure 2. STEVAL-LLL009V1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Figure 3. Power board functional areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Figure 4. Half-bridge LCC resonant converter with synchronous rectification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Figure 5. Synchronous rectification with VDS sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Figure 6. Synchronous rectification digital control algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Figure 7. PFC output voltage sensing daughter board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 8. STEVAL-DPS334M1 digital control board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 9. STEVAL-DPSADP01 adapter board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Figure 10. STSW-LLL009FW firmware logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Figure 11. STEVAL-LLL009V1 top layer silk screen and drill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 12. STEVAL-LLL009V1 top layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 13. STEVAL-LLL009V1 bottom layer silk screen and drill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 14. STEVAL-LLL009V1 bottom layer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Figure 15. Power board - PFC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Figure 16. Power board - DC-DC converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Figure 17. Power board - Aux power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Figure 18. Power board - MCU connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Figure 19. Daughter board - PFC voltage read with isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Figure 20. Control board - MCU and connector schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Figure 21. Control board - opto-isolated communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Figure 22. Adapter board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

UM2765List of figures

UM2765 - Rev 1 page 36/38

List of tablesTable 1. Converter characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Table 2. Control board LED indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Table 3. STEVAL-LLL009V1 fault codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Table 4. Switch SW1 position for output configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Table 5. Comparison of digital dimming and analog dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Table 6. Power board bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Table 7. Daughter board bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Table 8. Control board bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Table 9. Adapter board bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Table 10. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

UM2765List of tables

UM2765 - Rev 1 page 37/38

IMPORTANT NOTICE – PLEASE READ CAREFULLY

STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to STproducts and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. STproducts are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.

Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design ofPurchasers’ products.

No license, express or implied, to any intellectual property right is granted by ST herein.

Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.

ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or servicenames are the property of their respective owners.

Information in this document supersedes and replaces information previously supplied in any prior versions of this document.

© 2020 STMicroelectronics – All rights reserved

UM2765

UM2765 - Rev 1 page 38/38

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