1

DEMO MANUAL DC2702A-B

Rev. 0

DESCRIPTION

LTM4700Single 100A µModule Regulator with Digital Power System Management

Demonstration circuit 2702A-B is a single output, dual phases, high efficiency, high density, µModule regulator with 4.5V to 16V input range. The output voltage is adjust-able from 0.5V to 1.8V and it can supply 100A maximum load current. The demo board has a LTM4700 µModule regulator, which is a dual 50A or single 100A step-down regulator with digital power system management. Please see LTM4700 data sheet for more detailed information.

DC2702A-B powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evalu-ation of the DC/DC converter. To fully explore the extensive power system management features of the part, download

All registered trademarks and trademarks are the property of their respective owners.

BOARD PHOTO

the GUI software LTpowerPlay® onto your PC and use LTC’s I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on-the-fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.

GUI Download

The software can be downloaded from: LTpowerPlay

For more details and instructions of LTpowerPlay, please refer to LTpowerPlay GUI for LTM4700 Quick Start Guide.

Design files for this circuit board are available.

Figure 1. Single Output LTM4700/DC2702A-B Demo Circuit

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DEMO MANUAL DC2702A-B

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QUICK START PROCEDURE

Demonstration circuit 2702A-B is easy to set up to evalu-ate the performance of the LTM4700EY. Refer to Figure 2 for the proper measurement equipment setup and follow the procedure below.

1. With power off, connect the input power supply to VIN (4.5V – 16V) and GND (input return).

2. Connect the 1.0V output load between VOUT0 and GND (Initial load: no load).

3. Connect the DVMs to the input and outputs. Set default jumper position: JP1: ON; JP2: ON; JP3: ON.

4. Turn on the input power supply and check for the proper output voltages. VOUT0 should be 1.0V ±0.5%.

5. Once the proper output voltages are established, adjust the loads within the operating range and observe the output voltage regulation, ripple voltage and other parameters.

6. Connect the dongle and control the output voltages from the GUI. See “LTpowerPlay GUI for the LTM4700 Quick Start Guide” for details.

Note: Internal bias circuit is enabled when VIN >7V and JP3 is ON.

Note: When measuring the output or input voltage rip-ple, do not use the long ground lead on the oscilloscope probe. See Figure 3 for the proper scope probe technique. Short, stiff leads need to be soldered to the (+) and (–) terminals of an output capacitor. The probe’s ground ring needs to touch the (–) lead and the probe tip needs to touch the (+) lead.

PERFORMANCE SUMMARY Specifications are at TA = 25°C

PARAMETER CONDITIONS VALUE

Input Voltage Range 4.5V to 16V

Output Voltage, VOUT0 VIN = 4.5V to 16V, IOUT0 = 0A to 100A 0.5V to 1.8V, Default: 1.0V

Maximum Output Current, IOUT0 VIN = 4.5V to 16V, VOUT0 = 0.5V to 1.8V 100A

Typical Efficiency VIN = 12V, VOUT0 = 1.0V, IOUT0 = 100A 88.7% (See Figure 5)

Default Switching Frequency 350kHz

MAXIMUM OUTPUT CURRENT NUMBER OF OUTPUTSNUMBER OF LTM4700 µModule REGULATORS ON THE BOARD DEMO BOARD NUMBER

50A 2 1 DC2702A-A

100A 1 1 DC2702A-B

200A 1 2 DC2784A-A

300A 1 3 DC2784A-B

400A 1 4 DC2784A-C

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DEMO MANUAL DC2702A-B

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QUICK START PROCEDURE

+ –

VOUT GND

COUT

Figure 2. Proper Measurement Equipment Setup

Figure 3. Measuring Output Voltage Ripple

–+ IOUT0

IIN

VIN

4.5V TO 16VDC2702A-B F02

VOUT0

LOAD00A-100A

–+– +

+ –

– +

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DEMO MANUAL DC2702A-B

Rev. 0

Figure 5. Efficiency vs Load Current at VOUT0 = 1V, fSW = 350kHz (RUNP is ON)

QUICK START PROCEDUREConnecting a PC to DC2702A-B

You can use a PC to reconfigure the power management features of the LTM4700 such as: nominal VOUT, mar-

gin set points, OV/UV limits, temperature fault limits, sequencing parameters, the fault log, fault responses, GPIOs and other functionalities. The DC1613A dongle may be plugged when VIN is present.

Figure 4. Demo Setup with PC

Efficiency vs Load Current at VO = 1.0V, fSW = 350kHz

VIN = 6VVIN = 12V

LOAD CURRENT (A)0 10 20 30 40 50 60 70 80 90 100

70

75

80

85

90

95

100

EFFI

CIEN

CY (%

)

DC2702A-B F05

INPUT POWERSUPPLY

USB TO I2C/PMBusDONGLE DC1613A

LTM4700 DEMOBOARD DC2702A-B LOAD0

USB CABLE

12-PIN (J1)

CONNECTORDC2702A-B F04

VIN

VOUT0

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DEMO MANUAL DC2702A-B

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QUICK START PROCEDURE

DC2702A-B F06

VOUT0 (20MHz BW) [20mV/DIV]

50A TO 75A LOAD STEP

DC2702A-B F07

VOUT0 (20MHz BW) [5mV/DIV]

Figure 6. Output Voltage VOUT0 vs Load Current (VOUT0 = 1.0V)

Figure 7. Output Voltage Ripple at VIN = 12V, VOUT0 = 1.0V, IOUT0 = 100A

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DEMO MANUAL DC2702A-B

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QUICK START PROCEDURE

Figure 8. Thermal at VIN = 12V, VOUT0 = 1.0V, IOUT0 = 100A, TA = 25°C, No Airflow

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DEMO MANUAL DC2702A-B

Rev. 0

LTpowerPlay is a powerful Windows based develop-ment environment that supports Analog Devices power system management ICs and μModules, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882 and LTC3883. The software supports a variety of different tasks. You can use LTpowerPlay to evaluate Analog Devices ICs by connecting to a demo board sys-tem. LTpowerPlay can also be used in an offline mode (with no hardware present) in order to build a multichip configuration file that can be saved and reloaded at a later time. LTpowerPlay provides unprecedented diagnostic and debug features. It becomes a valuable diagnostic tool during board bring-up to program or tweak the power management scheme in a system, or to diagnose power issues when bringing up rails. LTpowerPlay utilizes the

LTPOWERPLAY SOFTWARE GUI

Figure 9. LTpowerPlay Main Interface

DC1613A USB-to-SMBus controller to communicate with one of many potential targets, including the LTM4675, LTM4676, LTM4677, LTM4678, LTC3880, LTC3882, LTC3883’s demo system, or a customer board. The soft-ware also provides an automatic update feature to keep the software current with the latest set of device drivers and documentation. The LTpowerPlay software can be downloaded from: LTpowerPlay

To access technical support documents for Analog Devices Digital Power Products visit the LTpowerPlay Help menu. Online help also available through the LTpowerPlay.

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DEMO MANUAL DC2702A-B

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LTPOWERPLAY QUICK START PROCEDUREThe following procedure describes how to use LTpowerPlay to monitor and change the settings of LTM4700.

1. Download and install the LTpowerPlay GUI.

2. Launch the LTpowerPlay GUI.

a. The GUI should automatically identify the DC2702A-B. The system tree on the left hand side should look like this:

b. A green message box shows for a few seconds in the lower left hand corner, confirming that LTM4700 is communicating:

c. In the tool bar, click the “R” (RAM to PC) icon to read the RAM from the LTM4700. This reads the configuration from the RAM of LTM4700 and loads it into the GUI.

d. If you want to change the output voltage to a different value, like 0.8V. In the Config tab, type in 0.8 in the VOUT_COMMAND box, like this:

Then, click the “W” (PC to RAM) icon to write these reg-ister values to the LTM4700. After finishing this step, you will see the output voltage will change to 0.8V.

If the write is successful, you will see the following message:

e. You can save the changes into the NVM. In the tool bar, click “RAM to NVM” button, as following:

f. Save the demo board configuration to a (*.proj) file. Click the Save icon and save the file. Name it whatever you want.

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DEMO MANUAL DC2702A-B

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PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 18 COUT1, COUT2, COUT3, COUT4, COUT5, COUT6, COUT7, COUT8, COUT9, COUT10, COUT14, COUT15, COUT16, COUT18, COUT19, COUT20, COUT21, COUT22

CAP., 330μF, X6S, 4V, 20%, 1210 TAIYO YUDEN, AMK325AC6337MM-P

2 1 CIN1 CAP., 180μF, ALUM. POLY., 25V, 20%, 8mm × 12mm SMD, E12

PANASONIC, 25SVPF180M

3 1 C15 CAP., 6800pF, X7R, 50V, 5%, 0603 AVX, 06035C682JAT2A

4 8 CIN2, CIN3, CIN4, CIN5, CIN6, CIN7, CIN8, CIN9

CAP., 22μF, X5R, 25V, 10%, 1210 AVX, 12103D226KAT2A MURATA, GRM32ER61E226KE15L TAIYO YUDEN, TMK325BJ226KM-P TAIYO YUDEN, TMK325BJ226KM-T

5 3 C21, C22, C24 CAP., 1μF, X5R, 25V, 10%, 0603 AVX, 06033D105KAT2A NIC, NMC0603X5R105K25TRPF

6 1 C23 CAP., 1μF, X7R, 25V, 10%, 0805 AVX, 08053C105KAT2A

7 1 C26 CAP., 0.1μF, X5R, 16V, 10%, 0603 AVX, 0603YD104KAT2A NIC, NMC0603X5R104K16TRPF

8 2 C27, C28 CAP., 0.01μF, X7R, 25V, 5%, 0603 AVX, 06033C103JAT2A

9 1 C33 CAP., 22μF, X5R, 6.3V, 20%, 0603 MURATA, GRM188R60J226MEA0D

10 2 Q1, Q2 XSTR., MOSFET, N-CH, 40V, TO-252 (DPAK) VISHAY, SUD50N04-8M8P-4GE3

11 1 Q3 XSTR., MOSFET, P-CH, 20V, 5.9A, TO-236 (SOT23-3)

VISHAY, SI2365EDS-T1-GE3

12 15 R10, R11, R12, R13, R14, R15, R16, R18, R19, R24, R52, R77, R94, R95, R106

RES.,10k, 5%, 1/10W, 0603, AEC-Q200 NIC, NRC06J103TRF PANASONIC, ERJ3GEYJ103V VISHAY, CRCW060310K0JNEA

13 4 R25, R32, R69, R70 RES., 10Ω, 1%, 1/10W, 0603 NIC, NRC06F10R0TRF PANASONIC, ERJ3EKF10R0V ROHM, MCR03EZPFX10R0 VISHAY, CRCW060310R0FKEA YAGEO, RC0603FR-0710RL

14 2 R30, R31 RES., 2.43k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F2431TRF PANASONIC, ERJ3EKF2431V VISHAY, CRCW06032K43FKEA

15 2 R50, R51 RES., 30Ω, 1%, 1W, 2512, AEC-Q200 VISHAY, CRCW251230R0FKEG

16 1 R53 RES., 0.01Ω, 1%, 1/2W, 2010, SENSE, AEC-Q200 VISHAY, WSL2010R0100FEA

17 2 R72, R73 RES., 4.99k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F4991TRF PANASONIC, ERJ3EKF4991V VISHAY, CRCW06034K99FKEA

18 1 R78 RES., 15.8k, 1%, 1/10W, 0603, AEC-Q200 NIC, NRC06F1582TRF PANASONIC, ERJ3EKF1582V VISHAY, CRCW060315K8FKEA

19 1 R90 RES., 0.001Ω, 1%, 1W, 2010, HP METAL, SENSE, AEC-Q200

VISHAY, WSL20101L000FEA18

20 1 U1 IC, DUAL 50A POP PSM MODULE, BGA 15mm × 22mm × 7.82mm

ANALOG DEVICES, LTM4700EY#PBF

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DEMO MANUAL DC2702A-B

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PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

21 1 U2 IC, MEMORY, EEPROM, 2KBIT (256mm × 8mm), TSSOP-8, 400kHz

MICROCHIP, 24LC025-I/ST MICROCHIP, 24LC025T-I/ST

Additional Demo Board Circuit Components

1 0 C1, C2, C14, C16, C17, C29, C31, C32 CAP., OPTION, 0603

2 0 D1, D2 DIODE, OPTION, SOD-323

3 0 R3, R8, R26, R27, R61, R62, R64, R67, R68, R74, R75, R83, R88, R89, R93

RES., OPTION, 0603

4 16 R9, R28, R29, R33, R35, R38, R41, R63, R65, R66, R91, R92, R96, R97, R98, R99

RES., 0Ω, 1/10W, 0603, AEC-Q200 NIC, NRC06ZOTRF VISHAY, CRCW06030000Z0EA

5 5 R48, R100, R101, R102, R103 RES., 0Ω, 3/4W, 2010, AEC-Q200 NIC, NRC50ZOTRF PANASONIC, ERJ12ZY0R00U VISHAY, CRCW20100000Z0EF

6 0 R49 RES., OPTION, 2010

7 0 R82 RES., OPTION, 1206

8 0 R104, R105 RES., OPTION, 0805

Hardware

1 26 E1, E2, E3, E4, E5, E6, E8, E9, E10, E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, E21, E22, E23, E24, E25, E26

TEST POINT, TURRET, 0.064", MTG. HOLE MILL-MAX, 2308-2-00-80-00-00-07-0

2 3 JP1, JP2 CONN., HDR, MALE, 1mm × 3mm × 2mm, VERT, STR, THT

WURTH ELEKTRONIK, 62000311121

3 1 J1 CONN., SHROUDED HDR, MALE, 2 × 6, 2mm, VERT, STR, THT

FCI, 98414-G06-12ULF

4 3 J2, J3, J4 CONN., RF, BNC, RCPT JACK,5-PIN, STR, THT, 50Ω

AMPHENOL RF, 112404

5 6 J5, J6, J7, J8, J9, J10 STUD, FASTENER, #10-32s PENNENGINEERING, KFH-032-10ET

6 12 J5, J6, J7, J8, J9, J10 NUT, HEX, STEEL, ZINC PLATE, 10-32 KEYSTONE, 4705

7 6 J5, J6, J7, J8, J9, J10 RING, LUG, CRIMP, #10, NON-INSULATED, SOLDERLESS TERMINALS

KEYSTONE, 8205

8 6 J5, J6, J7, J8, J9, J10 WASHER, FLAT, STEEL, ZINC PLATE, OD: 0.436 [11.1]

KEYSTONE, 4703

9 1 J11 CONN., HDR, MALE, 2 × 7, 2mm, R/A THT MOLEX, 0877601416 MOLEX, 877601416

10 1 J12 CONN., HDR, FEMALE, 2 × 7, 2mm, R/A THT SULLINS CONNECTOR SOLUTIONS, NPPN072FJFN-RC

11 4 MH1, MH2, MH3, MH4 STANDOFF, NYLON, SNAP-ON, 0.50" WURTH ELEKTRONIK, 702935000

12 3 XJP1, XJP2 CONN., SHUNT, FEMALE, 2 POS, 2mm WURTH ELEKTRONIK, 60800213421

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DEMO MANUAL DC2702A-B

Rev. 0

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12

DEMO MANUAL DC2702A-B

Rev. 0

SCHEMATIC DIAGRAM5 5

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13

DEMO MANUAL DC2702A-B

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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J12, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC

J11, MALE, CONN HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416

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14

DEMO MANUAL DC2702A-B

Rev. 0

ANALOG DEVICES, INC. 2020

05/20www.analog.com

ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.

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