UM2301 User manual point reference Signal Description TP400 SYMBOL_DETECT Symbol detector TP501...
Transcript of UM2301 User manual point reference Signal Description TP400 SYMBOL_DETECT Symbol detector TP501...
IntroductionThe STEVAL-ISB044V1 wireless power transmitter evaluation board is based on the MP-A10 (CR419) wireless powerconsortium (WPC) standard version 1.2.3 and supports FOD (foreign object detection).
The transmitter supports all Qi-compatible receivers (such as those in Qi- enabled mobile phones) as well as resistive orcapacitive modulation receivers.
In accordance with the Qi-MPA10 topology, the STEVAL-ISB044V1 supports a 5-13 V input voltage and a half-bridge stage withbridge voltage/frequency control.
The evaluation board is based on the STWBC- EP controller which integrates all the functions required to drive and monitor thetransmitter, and controls the bridge voltage built in boost topology.
The STWBC-EP supports UART connectivity to a PC and, thanks to the STEVAL-ISB044V1 graphical interface, monitors thetransmitter behavior in real-time.
The STEVAL-ISB044V1 reference design provides a complete kit which includes the STWBC-EP, firmware, layout based oncost- effective 2-layer PCB, graphical interfaces and tools.
Figure 1. STEVAL-ISB044V1 evaluation board
Getting started with the Qi MP-A10 wireless charger Tx evaluation board based on STWBC-EP
UM2301
User manual
UM2301 - Rev 2 - May 2018For further information contact your local STMicroelectronics sales office.
www.st.com
1 Getting started
1.1 System requirementsTo use the STEVAL-ISB044V1 evaluation board with the graphical user interface (GUI), you need:• a PC with Microsoft® Windows ® operating system (XP or later versions)• NET Framework 4• a USB-to-UART cable to connect the board to the PC.
1.2 Package contents• Hardware:
– a STEVAL-ISB044V1 evaluation board– ST-LINK/V2 in-circuit debugger/programmer with single wire interface module (SWIM), available for
download on www.st.com– a USB-to-UART interface dongle with a micro-USB cable for board debug and GUI use
• Software:– ST-LINK USB driver– STVP programming software (integrated in ST_toolset available on www.st.com)– FTDI VCP driver (http://www.ftdichip.com/Drivers/VCP.htm)– PC GUI installation package
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2 Hardware description and setup
2.1 System block diagram
Figure 2. STWBC-EP block diagram
2.2 STEVAL-ISB044V1 wireless transmitter board overviewThe STEVAL-ISB044V1 evaluation board features:• STWBC-EP digital controller• 15 W output power• Qi MP-A10 reference design• WPC Qi1.2.3 standard compliant• Robust demodulation algorithm, with triple path (V, I, f)• Foreign object detection (FOD)• Accurate power control• Active presence detection• UART protocol to control and monitor the system• Complete reference design (evaluation board, IC, firmware and tools)• 2-layer PCB for easy design• Flash memory-based
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• RoHS compliant
Table 1. STEVAL-ISB044V1 electrical performance: input characteristics
Parameter Inputcharacteristics Min. Typ. Max. Unit Notes and
conditions
Vin Input voltage 5 12 13 V
Iin Input current 1.6 2 AVin nominal,
Iout = max. onMP1B Rx
Input no-loadcurrent mA
Input stand-bycurrent 1.4 mA At typical
voltage
Table 2. STEVAL-ISB044V1 electrical performance: system characteristics
Parameter Input characteristics Min. Typ. Max. Unit Notes and conditions
Fs Switching frequency 110 180 kHz Decrease with load
Duty cycle Duty cycle modulation 5 50 % Duty cycle
ƞ Full load efficiency 80 % Vin= 12 V, P Out Rx = 15 W
UM2301STEVAL-ISB044V1 wireless transmitter board overview
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Figure 3. STEVAL-ISB044V1 evaluation board: connectors, LEDs and test points
UM2301STEVAL-ISB044V1 wireless transmitter board overview
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Figure 4. STEVAL-ISB044V1 evaluation board: power supply selection
Table 3. Connector description
Connector reference Description
J100 DC power jack connector
J101 Power/QC USB connector link
J500 SWIM connector used for the download
J501 UART jack connector used for the GUI
J700 Quick charge USB connector
Table 4. Test point description
Test point reference Signal Description
TP100 12 V 12 V power supply connection
TP101 GND GND power connection
TP102 VIN Input voltage
TP103 VDD_STWBC 4.5V LDO output voltage
TP200 VDCDC Boost output voltage
TP301 ISENSE Current measurement
TP302 GND Power GND connection (Rsense)
TP303 VRSENSE Rsense resistor voltage
TP304 Wireless charging coil connection
UM2301STEVAL-ISB044V1 wireless transmitter board overview
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Test point reference Signal Description
TP305 Wireless charging coil connection
TP400 SYMBOL_DETECT Symbol detector
TP501 I2C_SCL STWBC I²C signal
TP502 I2C_SDA STWBC I²C signal
TP503 USB_DP STWBC UART Rx signal
TP504 USB_DM STWBC UART Tx signal
TP506 GPIO_0 STWBC GPIO signal used for LEDs
TP507 GND Ground
TP508 CURRENT_DEMOD Symbol detector
TP509 QC_IO Quick charge circuit signal
TP510 GND Ground
TP511 GND Ground
2.3 STWBC-EP pinout and pin descriptionTheSTWBC-EP is a multifunction device that can support several wireless charging architectures.This section shows the STWBC-EP pinout when the MP-A10 configuration is used.
Figure 5. STWBC-EP pinout in MP-A10 configuration
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Table 5. STWBC-EP pin description
Pin number Pin name Pin type Firmware description
1 UART_RX DI Uart RX link on USB debug connector
2 PWM_QFOD DO PWM dedicated to QFOD circuit
3 I2C_SDA I2C_SDA
4 I2C_SCL I2C_SCL
5 DNBL DO Output driver for Low side branch
6 LED DO Digital output for light indicators
7 QC_IO DO Quick charge circuit signal
8 CMP_OUT_V AI Boost output voltage sensing
9 CS_CMP AI Boost current sensing
10 DCDC_DAC_REF AI DAC reference value for Boost output voltage
11 WAVE_SNS AI Symbol detector based on delta frequency
12 CURRENT_DEMOD AI Current demodulation
13 VDDA PS Analog power supply
14 VSSA PS Analog ground
15 TANK_VOLTAGE AI Analog input to measure the LC voltage (power calculation)
16 VTARGET AI Boost voltage measurement
17 QFOD_ADC AI High sensitivity peak voltage detector used for Quality Factor measurement
18 COIL_TEMP AI Analog input for temperature measurement. The input is connected to externalNTC biased to VDD_STWBC
19 ISENSE AI Analog input to measure the current flowing into the power bridge
20 VMAIN AI Analog input to measure the main power supply
21 DCDC_DRV DO DCDC boost PWM drive
22 DEMAGNET DI Boost demagnetization
23 SYMBOL_DETECT DI Voltage demodulation
24 DCDC_DAC DO Boost PWM output DAC (setting the CPP3 comparator voltage reference)
25 UPBL DO Output driver for high side branch
26 DNBL_FB Used for hardware PWM programmation
27 SWIM DIO Digital IO for debug interface
28 NRST DI Reset
29 VDD PS Digital and I/O power supply
30 VSS PS Digital and I/O ground
31 VOUT Supply Internal LDO output
32 UART_TX DO Uart TX link on USB debug connector
Note: AlI analog inputs are VDD compliant but can be used only between 0 and 1.2 V.
UM2301STWBC-EP pinout and pin description
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3 Download procedure
To download the firmware to the board, the user has to install the GUI software which allows a complete boardmonitoring via UART signals. Thus, to use the STSW-STWBCGUI, UART signals must be accessible.In case of board issues, ST-LINK and STVP software can be installed to erase the STWBC-EP Flash memory.
3.1 STSW-STWBCGUI software installation
Step 1. Install the GUI by launching the STWBC_GUI_Setup.msi installation file
Figure 6. STSW-STWBCGUI installation file
Step 2. Connect the wireless power transmitter board to the PC via the USB-to-UART connection on J501UART connector
Step 3. Check Windows Device Manager to identify the correct port number and select the appropriate USBserial COM port
Figure 7. Windows Device Manager: COM port selection
Step 4. Enter a specific COM port number (if not listed in the selection window) in the Special text box (e.g.,“COM12” or the specific syntax “\\.\COM12”)If the GUI is switched off, ensure that the COM port is not used on your computer. Otherwise, tryanother USB port.
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Figure 8. STSW-STWBCGUI start screen
Step 5. Press “OK”.The GUI is ready to run.
3.2 Firmware download via STSW-STWBCGUIThe following sections describe the firmware download through the UART connector via STSW-STWBCGUI.The download contains 3 files incorporated in a single cabfile.
3.2.1 Download procedure with a new chip (never been programmed)If the chip has never been programmed, the download mode is enabled by default.
Step 1. Connect the USB-to-UART dongle to the computer.
Note: Do not connect the transmitter board for the moment.
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Figure 9. Dongle connection
Step 2. From the GUI, select Load FW to board from the setup menu.
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Figure 10. Firmware download via STSW-STWBCGUI
Step 3. As prompted, select the CAB file containing the firmware to download
Figure 11. Firmware file selection message
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Figure 12. Firmware file selection
Step 4. Supply the board with 12 V and keep it powered.
Figure 13. Power on message
Step 5. When the DOS window appears, connect the transmitter board to the dongle using a micro-USB cable.
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Important:Take care to connect it to the USB debug connector J501 on the opposite side of the power supply connection.
Figure 14. USB-to-UART dongle to STEVAL-ISB044V1 connection
Step 6. Follow the download progress in the DOS window and power off the board when prompted.
Figure 15. DOS window: download in progress
3.2.2 Firmware upgrade procedure (chip already programmed)If a chip has already been programmed with the firmware, the download mode is disabled and special commandneeds to be sent to STWBC-EP to enable the download mode.
Step 1. Supply the transmitter board via a power supply set to12 V.Step 2. Connect the USB-to-UART dongle to the transmitter board.
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Step 3. The STWBC-EP UART Rx/Tx signals are accessible on the transmitter board J501 connector,respectively on USB_DP and USB_DM (see Figure 14. USB-to-UART dongle to STEVAL-ISB044V1connection).
Step 4. From the STSW-STWBCGUI, select Load FW to board from the setup menu (see Figure10. Firmware download via STSW-STWBCGUI).
Step 5. As prompted, select the CAB file containing the firmware to download (see Figure 11. Firmware fileselection message).
Step 6. As prompted, power the board on and keep it powered.Step 7. Follow the download progress in the DOS window and power the board off when prompted (see Figure
15. DOS window: download in progress).In case of problems in downloading the firmware through UART (for example, firmware corruptionduring update), refer to the following section.
3.3 Erasing firmware procedure using STVP
3.3.1 RequirementsTo start the firmware erasing procedure using STVP, you have to install on your PC:• ST-LINK USB driver• STVP programming tool (available at www.st.com)• ST-LINK hardware tools
You also need to configure STVP as shown below.
Figure 16. STVP configuration
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3.3.2 Procedure
Step 1. Power the target off.Step 2. Power the target on.Step 3. Connect ST-LINK circuit to the PC via USB.Step 4. Connect the ST-LINK–SWIM cable to the target.
Note: Pay special attention in connecting the SWIM cable to the transmitter board correctly, as shown below.
Figure 17. STEVAL-ISB044V1 evaluation board: ST-LINK connection
Step 5. Launch STVP software.Step 6. Select STM8AF6166 as core.
Figure 18. STVP core selection
Note: Do not upload any program into the STVP RAM area, as all bits will be erased (load 00 00 00).Step 7. Transfer the ”00 00” to the STWBC-EP via the SWIM interface using the appropriate push button.
Figure 19. STVP download
Step 8. Click OK if a “wrong device selected” alert appears.
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Figure 20. STVP wrong device selected alert
Step 9. Click YES if “An incompatibility has been found with this device” alert appears.
Figure 21. STVP incompatibility device action query
After this operation, the programming procedure starts. At completion, the STVP informs the user thatthe program is loaded and verified.
< PROGRAM MEMORY programming completed.> Verifying PROGRAM MEMORY area...< PROGRAM MEMORY successfully verified.
Step 10. Exit from the STVP program.Step 11. Disconnect SWIM.Step 12. Remove power supply from the STEVAL-ISB044V1 transmitter board.Step 13. Retry the UART download procedure if necessary.
3.4 Firmware download with command line
3.4.1 Firmware download with written chipStep 1. Ensure a dedicated directory has the following files:
– STWBC_Loader.exe– stwbc_loader_not_empty.bat– enable_boot.bin– “firmware version“.cab
Step 2. Starting from the STSW-STWBCGUI folder, run the stwbc_loader_not_empty.bat from the commandline, specifying the COM number (e.g. COM2) and firmware filename parameters (“firmwarename.cab”).
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Figure 22. STSW-STWBCGUI command line
3.4.2 Firmware download with blank chipIf the STWBC-EP memory is erased, the procedure sequence is a bit different.
Step 1. Connect the UART cable to the board.Step 2. Select Load FW to board from the STSW-STWBCGUI and power the board.Step 3. Execute the command line as per the example below with the appropriate firmware filename.
Figure 23. STSW-STWBCGUI command line with blank chip
Note: If the COM port is > COM8, the user has to use the syntax \\.\COMxwhere COMx is the COM port number.
Note: A dedicated tool is available for simultaneous downloads (refer to the STSW-STWBCFWDT firmwaredownloader tool).
3.5 STVP file creationTo use the STVP to download, you must generate new files from the *.cab. The existing GUI gives you thispossibility.
Step 1. Select the convert CAB to STVP files command from the STSW-STWBCGUI setup menu
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Figure 24. STSW-STWBCGUI: convert CAB to STVP files
Step 2. Follow the prompt to select the appropriate cabfile.
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Figure 25. Selecting the CAB file to be converted
Step 3. Follow the prompt to provide the project file name.
Figure 26. STVP project file name
Four files will be generated as shown below.
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Figure 27. STVP files created
Step 4.
3.6 Firmware download with STVP
Step 1. Power the target off.Step 2. Power the target on.Step 3. Connect ST-LINK circuit to the PC via USB.Step 4. Connect the ST-LINK–SWIM cable to the target.
Note: Pay special attention in connecting the SWIM cable to the transmitter board correctly, as shown in Figure17. STEVAL-ISB044V1 evaluation board: ST-LINK connection.Step 5. Launch STVP software.Step 6. Select STM8AF6166 as core (see Figure 18. STVP core selection).Step 7. In STVP, open the Project menu and click Open.Step 8. Select the .stp given in the zip file.
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Figure 28. STVP file selection
Step 9. Wait few seconds.The following message should appear:
Loading file program.hex in PROGRAM MEMORY area...< File successfully loaded. File Checksum 0x1D1205
Note: It is normal that some warnings appear:
> Loading file options.hex in OPTION BYTE area...FILE : line 2: Address 0x4802 is out of range and is ignored!FILE : line 2: Address 0x4804 is out of range and is ignored!
Step 10. In STVP, open the Program menu and select All tabs (on active sectors, if any)Step 11. Click OK if a “wrong device selected” alert appears (see Figure 20. STVP wrong device selected alert).Step 12. Click YES if “An incompatibility has been found with this device” alert appears (see Figure 21. STVP
incompatibility device action query).After this operation, the programming procedure starts. At completion, the STVP informs the user thatthe program is loaded and verified.
< PROGRAM MEMORY programming completed.> Verifying PROGRAM MEMORY area...< PROGRAM MEMORY successfully verified.
Step 13. Exit from the STVP program.Step 14. Disconnect SWIM.Step 15. Remove power supply from the STEVAL-ISB044V1 transmitter board.
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The IAR toolchain can be installed also for firmware compilation and download.
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4 Evaluation equipment setup
Figure 29. STEVAL-ISB044V1 evaluation board: test setup configuration
The board is powered via an external power supply or a USB charger. An electronic load is connected to thereceiver output to load up to 15 W.On the basis of measurements, voltmeters and ammeters measure input/output voltage and current.
4.1 External power supplyThe power supply is set to 12 V/2 A for EPP mode and 5 V/2 A for BPP mode.The board is connected to the external power suplly through wires.The jumper has to be set to select the jack/external power supply input.
Figure 30. STEVAL-ISB044V1 evaluation board: external power supply connection
UM2301Evaluation equipment setup
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4.2 USB chargerThe board can be supplied by a USB charger. The jumper J101 should be set to select the USB supply input.CIA simple 5 V USB charger can be used. Considering the peak currents and the system efficiency, a 5 V/2 AUSB charger must be considered. At this input voltage, BPP mode only is available.It is also possible to use a Quick Charge (QC) wall charger in order to provide higher voltage. By default, D+/D-interface selects 12V on Vbus. This enables to support EPP mode.To provide 15 W on the receiver side and considering the system efficiency, a 24 W Quick Charge wall chargershould be used.The 24W QC wall charger, with Quick Charge 3.0, tested with our solution is manufactured by KOVOL.The USB cable between the charger and the board should be of good quality. To minimize the losses, a 20 AWGUSB cable must be used.
Figure 31. STEVAL-ISB044V1 evaluation board: USB charger connection
4.3 UART configurationThe STSW-STWBCGUI is installed on the PC connected to the board via the USB-to-UART cable (connected onthe board J501 USB debug connector).
UM2301USB charger
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Important:This UART connection is mandatory for parameter settings and debug of the board which is using the STSW-STWBCGUI.
Figure 32. STEVAL-ISB044V1 evaluation board: UART connection
UM2301UART configuration
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5 GUI and evaluation procedure
The STSW-STWBCGUI thoroughly monitors STWBC-EP operations.The main screen provides transmitter and Qi receiver status information.
Figure 33. STSW-STWBCGUI: object detected and charge in progress
The STSW-STWBCGUI can also display the Rx to Tx communication protocol errors, useful for systemdebugging.
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Figure 34. STSW-STWBCGUI: Qi protocol window
You can also monitor STWBC-EP internal variables such as bridge voltage and frequency, Rx reported power, coiltemperature, etc.
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Figure 35. STSW-STWBCGUI: Qi monitor window
The GUI user-friendly interface allows efficient system adjustment (thresholds, regulation error) and lets you storeparameters to and load parameters from your computer.The parameters have the following levels of protection:• Level 0: parameters can be modified without protection• Level 1: more critical parameters to be modified with caution. You must click the Unlock param button
before modifying it, with caution, as it can lead to system malfunction or trigger unexpected behaviorincompatible with Qi standard.
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Figure 36. STSW-STWBCGUI: Parameters window
Parameters can be modified and their effect can be tested immediately by clicking Push to target; modifiedparameters lose their highlighted background.
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Figure 37. STSW-STWBCGUI: modified parameters
The GUI embeds the STSW-STWBCFWDT downloader interface (which uses UART connection) and includestools to generate binary files with adjusted parameters and to build new firmware packages incorporating thesefiles.Through the GUI, you can change the parameters and produce a new cab to program a batch of new boards. Tothis aim, dump the parameters into a bin file, but only after clicking the Push to target button.
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Figure 38. STSW-STWBCGUI: saving modified parameters (Dump to bin)
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Figure 39. STSW-STWBCGUI: bin file backup
You can then select Modify parameters in CAB file from the setup menu and select the appropriate firmwareCAB file to be patched. This operation will alter the firmware file with new tuning parameters, which can besubsequently loaded using the standard procedure.
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Figure 40. STSW-STWBCGUI: CAB file patch button
5.1 Status LEDsThe status LEDs give the state of the charge:At startup• Red short blinking: when the board auto-calibration is on-going. The user has to wait for the LED to be
switched off before putting a receiver on the surface.• Red and green blinking once: an internal reset occurred.• Red and green steady state: firmware/STWBC chip mismatch• Red steady and after 2 seconds green steady state: board hardware subversion detected does not match
the firmware
In steady state• Green blinking: power transfer in progress• Green steady state: the charge is complete• Red blinking: an error has been detected, as incomplete charge due to battery fault, overvoltage, overcurren,
etc.
UM2301Status LEDs
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• Red steady state: the transmitter is stuck until the receiver is removed, as mentioned in the Qi standard(power transfer stopped three times in a row due to the amount of power not provided to the receiver, sometypes of end power transfer or no response error code)
5.2 Test procedure for board calibrationThere are 2 auto-calibration phases in the GUI: one for the presence detection and one for the QFOD.
Important: Both calibrations are mandatory to ensure a good functioning of the transmitter board.
Figure 41. STSW-STWBCGUI: start auto-calibration
Note: This calibration should be done only once after each new firmware download, with NO Receiver placed on thetransmitter.You must first calibrate the presence detection and then the QFOD.
5.2.1 Presence detection calibration procedure
Step 1. Set the test number to 1Step 2. Click the Start button
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Figure 42. STSW-STWBCGUI: presence detection test
At the end of the test, in the protocol window, the AUTOCAL_TEST_DONE is set and in the testwindow the status is Test Done.
Figure 43. STSW-STWBCGUI: test result
Step 3. Start the test again if the returned status is different.
5.2.2 QFOD calibration procedure
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Step 1. Set the test number to 2Step 2. Click the Start button
Figure 44. STSW-STWBCGUI: QFOD test
At the end of the test, in the protocol window, the AUTOCAL_TEST_DONE is set and in the testwindow the status is Test Done.
Figure 45. STSW-STWBCGUI: QFOD test result
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Step 3. Start the test again if the returned status is different.
5.3 EfficiencyEfficiency measurements are performed on a Qi certification tester.The STEVAL-ISB044V1 transmitter is supplied by 12 V/2 A and the receiver voltage level is 12 V (MP1B).POUT is the output power actually measured at the receiver output (not only at the rectifier output) and PIN is theinput power.Efficiency is measured the setup configuration as per the picture below.
Figure 46. Efficiency setup
The figure below shows the typical performance on different coils (efficiency=POUT/PIN).
Figure 47. STEVAL-ISB044V1 evaluation board: efficiency performance with MP1B Rx
0.0%
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30.0%
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Effic
ienc
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Rx output Power (W)
V4.0
The maximum efficiency is 82.2% at 7 W.
5.4 Stand-by consumptionIn stand-by, when the board is supplied at 12 V, very low power consumption is achieved.In this mode, device detection is still ensured; power consumption is reduced down to 1.4 mA average.
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The STEVAL-ISB044V1 evaluation board has a low stand-by power of only 17 mW.To measure this low power consumption, the UART cable must be unplugged.
UM2301Stand-by consumption
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6 Schematic diagram
Figure 48. STEVAL-ISB044V1 circuit schematic (1 of 8)
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UM2301Schematic diagrams
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Figure 49. STEVAL-ISB044V1 circuit schematic (2 of 8)
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010
K
C20
210
0NF
R20
21K
R20
447
0R C21
522
0NF
R21
23.
3K
10 µ
F10
µF
100
µF22
µF
22 µ
F
UM2301Schematic diagrams
UM2301 - Rev 2 page 41/71
Figure 50. STEVAL-ISB044V1 circuit schematic (3 of 8)
Dire
ct G
ND
line
con
nect
ion
VDD
_STW
BCVD
D_S
TWBC
VDC
DC
VDC
DC
POW
ER_N
OD
E
UPB
L
DN
BL
ISEN
SE
IDEM
OD
PWM
_QFO
D
C30
722
NF
C30
047
NF
R30
4
470K
R30
91K
TP30
4W
IRE_
SOLD
ER
1
C30
31N
F
R30
647
0KR
305
470K
C31
01.
5NF
C30
147
NF
U30
0
MC
P147
00
GN
D4
PWM
HI
2
LOW
DR
V5
PWM
LO3
VCC
6
PHAS
E1
HIG
HD
RV
8
BOO
T7
TH9
C30
610
0NF
R30
04.
7R
TP30
2
1
C30
447
NF
D30
041
48W
S
C30
9
470N
F
R30
14.
7RQ
304
N-M
OS
STL1
0N3L
LH5
5
4
1678
23
R30
310
0K
Q30
3N
-MO
SST
L10N
3LLH
5
5
4
1678
23
TP30
3
1
TP30
5W
IRE_
SOLD
ER
1
Q30
2N
PN1
23
Q30
1N
PN-N
PN
2
3
1
4
5
6
M30
0
C30
247
NF
C30
510
µF
R30
810
K
R30
70.
022R
TP30
1
1
R30
21M
C30
847
0PF
BRID
GE_
NO
DE
HVG
LVG
VRSE
NSE
12 µ
H
UM2301Schematic diagrams
UM2301 - Rev 2 page 42/71
Figure 51. STEVAL-ISB044V1 circuit schematic (4 of 8)
VDD_STWBC
SYMBOL_DETECT
POWER_NODE
R401
82K
R40747K
R41182K
Q400NPN-NPN
23 1
4 5 6
R400
470R D400
3
1 2
C406
4.7NF
C40122NF
R4081M
R4102.2K
R402
150K
R409
100K
C404
4.7NF
C402100PF
R406
100K
C405220NF
R40522K
C400
10NF
R404470K
TP400
1
C40322PF
R403470K
UM2301Schematic diagrams
UM2301 - Rev 2 page 43/71
Figure 52. STEVAL-ISB044V1 circuit schematic (5 of 8)
STW
BC-E
PD
igita
l con
trolle
r
Layo
ut n
ote
: GN
D re
fere
nce
of th
e O
pAm
p in
puts
hav
e to
be
conn
ecte
d in
star
gro
und
conn
ectio
n w
ith th
e G
ND
plan
of t
he p
ower
brid
ge.
USB
for
UART
Deb
ugFO
R DE
BUG
VDD
_STW
BC
VDD
_STW
BC
VDD
_STW
BC
VDD
_STW
BCVD
D_S
TWBC
VDD
_STW
BC
VDD
_STW
BC
VDD
_STW
BC
VDD
_STW
BC
VBU
S
DN
BL
ISEN
SE
UPB
LC
MP_
OU
T_V
CS_
CM
P
DEM
AGN
ET
DC
DC
_DAC
DC
DC
_DR
V
VTAR
GET
QFO
D_A
DC
DC
DC
_DAC
_REF
IDEM
OD
SYM
BOL_
DET
ECT
POW
ER_N
OD
E
POW
ER_N
OD
E
QC
_IO
QFO
D_A
DC
DN
BL
PWM
_QFO
D
POW
ER_N
OD
E
R52
247
K
D50
0
BAS5
21-7
TP51
0
1
TP50
9 1
C50
1
100N
F
R51
310
0K
R52
6
1KC
514
2.2N
F
C51
1
220P
F
D50
4
BAV9
9W
3
12
TP50
4
1
R52
810
0K
R52
11M
D50
7R
ED
R51
9
22K
R51
2
220R
TP50
1
1
R53
0
33K
D50
1BA
V99W
3
1
2
R51
018
0K
C51
322
PF
D50
6G
REE
N
TP50
8
1
L502
1K
C50
6
1NF
R52
710
0K
J501
6291
0515
0521
USB
_VC
C1
USB
DM
2
USB
DP
3
USB
_GN
D5
SHEL
L6
SHEL
L7
SHEL
L8
ID4
SHEL
L9
R50
210
K
R50
72.
7K
J500 1 2 3 4
C50
31U
F
TP51
1
1
C50
710
NF
C51
210
0NF
D50
8
BAS5
21-7
R52
933
K
NTC
R51
647
K
R51
110
0K
R50
610
0K
TP50
3
1
+ -
U50
1
TSV5
21IC
T
1+I
N
3-IN
2V-
5V+
4O
UT
C50
010
0NF
R50
510
K
TP50
6
1
TP50
7
1
R51
4
220R
R51
810
0K
C50
210
0NF
C50
41N
FTP
502
1
D50
9R
B520
S
L501
1K
R51
5
100R
R50
310
0K
C51
0
100N
F
C50
9
100N
F
Q50
0
NPN
-PN
P
2
31 4
5
6
C50
522
NF
R50
410
K
U50
0ST
WBC
_EP
VDD29
VDDA13
VOU
T31
VSS30
VSSA14
DC
DC
_DR
V21
DC
DC
_DAC
24
UPB
L25
DN
BL5
PWM
_QFO
D2
UAR
T_TX
32
UAR
T_R
X1
LED
6
QC
_IO
7
NR
ST28
SWIM
27
TAN
K_VO
LTAG
E15
VTAR
GET
16
QFO
D_A
DC
17
CO
IL_T
EMP
18
ISEN
SE19
VMAI
N20
CM
P_O
UT_
V8
CS_
CM
P9
DC
DC
_DAC
_REF
10
WAV
E_SN
S11
CU
RR
ENT_
DEM
OD
12
DEM
AGN
ET22
SYM
BOL_
DET
ECT
23
DN
BL_F
B26
I2C
_SD
A3
I2C
_SC
L4
VSS33
R52
51K
R52
033
0R
C50
82.
2 µF
R51
7
1M
VDD
_STW
BC
RES
ET
SWIM
SWIM
TAN
K_VO
LTAG
E
CU
RR
ENT_
DEM
OD
I2C
_SC
LI2
C_S
DA
RES
ET
CU
RR
ENT_
DEM
OD
USB
_DM
TAN
K_VO
LTAG
E
WAV
E_SN
S
USB
_DP
USB
_DM
USB
_DP
WAV
E_SN
S
UM2301Schematic diagrams
UM2301 - Rev 2 page 44/71
Figure 53. STEVAL-ISB044V1 circuit schematic (6 of 8)
M608
HTSB-M3-15-5-1
M621
HOLE_3.2MM_6
M624
HOLE_3.2MM_6
M623
HOLE_3.2MM_6
M619
WExxx_2xx
M604
D01475
M609
HTSB-M3-15-5-1
M600
M320 KRSTMCZ100-
M622
HOLE_3.2MM_6
M601
M320 KRSTMCZ100-
M602
M320 KRSTMCZ100-
M611
HTSB-M3-15-5-1
M607
D01475
M620
SPACER_3MM_MP_A6-A2
M627
OPTICAL_TARGET
M606
D01475
M610
HTSB-M3-15-5-1
M626
OPTICAL_TARGET
M603
M320 KRSTMCZ100-
M605
D01475
M625
OPTICAL_TARGET
Figure 54. STEVAL-ISB044V1 circuit schematic (7 of 8)
USB for Quick Charge3 A on pin 1 & pin 51 A on other pins
VDD_STWBC
VDD_STWBC
QC_IO
USB_VCC_QC
R701
10R
R706
10R
R705
NP
R700
100K
R704100K
Q700
NPN-NPN
2
3
1
4
5
6
J700
USB_VCC1
USBDM2
USBDP3
USB_GND5
SHELL6
SHELL7
SHELL8
ID4
SHELL9
R70239K
R70739K
R70333K
USB_DM_QCUSB_DP_QC
UM2301Schematic diagrams
UM2301 - Rev 2 page 45/71
Figure 55. STEVAL-ISB044V1 circuit schematic (8 of 8)
US
B
5V 3V3
IO V
olta
ge s
elec
tion
(3V3
/ 5V
)
For d
ebug
VBU
S_U
SB_M
ASTE
R
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VCC
_IO
VCC
_IOVC
C_I
O
VSS
VSS
VSS
VSS
VSS
VBU
S_U
SB_M
ASTE
R
VBU
S
VBU
S
VSS
R80
7
NPR80
2
0R
C80
210
NF
U80
1
FT23
2R
TXD
1
DTR
#2
RTS
#3
VCC
IO4
RXD
5
RI#
6
GN
D1
7
NC
18
DSR
#9
DC
D#
10
CTS
#11
CBU
S412
CBU
S213
CBU
S314
OSC
O28
OSC
I27
TEST
26
AGN
D25
NC
224
CBU
S023
CBU
S122
GN
D2
21
VCC
5I20
RES
ET#
19
GN
D18
3V3O
UT
17
USB
DM
16
USB
DP
15
C80
710
0NF
R80
3
330R
R80
50R
R81
010
K
C80
310
0NF
C80
110
0NF
R80
1
NP
J801 USB
_VC
C1
USB
DM
2
USB
DP
3
USB
_GN
D4
SHELL15
SHELL26
L800
120R
R80
4
0R
D80
0
I/O1#
11
GN
D2
VBU
S5
I/O2#
44
I/O1#
66
I/O2#
33
C80
547
PF
R80
80R
J800
VBU
S1
USB
DM
2U
SBD
P3
GN
D4
SHEL
L15
SHEL
L48
SHEL
L26
SHEL
L37
C80
610
UF
C80
447
PF
R80
910
K
R80
6
330R
TXD
VCC
3O
RXD
USB
DM
_DO
NG
LE
USB
DP_
DO
NG
LE
VBU
S Ex
tern
alPo
wer
Sup
ply
Con
nect
or
USB
LC6-
2SC
6
UM2301Schematic diagrams
UM2301 - Rev 2 page 46/71
7 Bill of materials
Table 6. STEVAL-ISB044V1 bill of materials
Item Q.ty Ref. Part/Value Description Manufacturer Order code
1 2 C100, C114 NP, 0603 Ceramiccapacitors Any C_NP_0603
2 2 C101, C103 10 µF, 25 V,1206, ±20%
Ceramiccapacitors Wurth Elektronik 885012108021
3 1 C102 NP, 1210 Ceramiccapacitor Any C_NP_1210
4 4 C104, C108,C212, C507
10 NF, 50 V,0402, ±15%
Ceramiccapacitors Any 10NF_50V_X7R_0402
5 4 C106, C204,C208, C217
22 µF, 25 V,1210, ±20%
Ceramiccapacitors Wurth Elektronik 885012109014
6 8
C107, C110,C115, C306,C500, C501,C502, C509
100 NF, 25V,0402, ±15%
Ceramiccapacitors Any 100NF_25V_X5R_0402
7 4 C109, C116,C200, C211 NP, 0402 Ceramic
capacitors Any C_NP_0402
8 1 C111 10 µF, 10 V,0805, ±10%
Ceramiccapacitor Murata GRM21BR71A106KE51L
9 4 C112, C113,C510, C512
100 NF, 50 V,0402, ±15%
Ceramiccapacitors Any 100NF_50V_X5R_0402
10 1 C117 NP, 0603 Ceramiccapacitor Murata GRM188R61E105KA12J
11 1 C202 100 NF, 50 V,0603, ±5%
Ceramiccapacitor Murata GRM188R71H104KA93D
12 2 C203, C207 10 µF, 50 V,1206, ±10%
Ceramiccapacitors Any 10UF_50V_X5R_1206
13 1 C205 100 µF, 35 V,±20%
Aluminiumcapacitor Panasonic EEEFT1V101AP
14 1 C206 5.6 NF, 50 V,0402, ±15%
Ceramiccapacitor Any 5.6NF_50V_X7R_0402
15 1 C209 1 NF, 50 V,0402, ±15%
Ceramiccapacitor Any 1NF_50V_X5R_0402
16 1 C213 10 PF, 50 V,0402, ±15%
Ceramiccapacitor Any 10PF_50V_X7R_0402
17 2 C214,C215 220 NF, 35 V,0603, ±15%
Ceramiccapacitors Any 220NF_35V_X7R_0603
18 1 C216 470pF, 50V,15% Ceramiccapacitor Any 470pF_50V_COG_402
19 4 C300, C301,C302, C304
47 NF, 100 V,1206, ±5%
Ceramiccapacitors TDK C3216C0G2A473J115AC
20 1 C303 1 NF, 50 V,0603, ±15%
Ceramiccapacitor Any 1NF_50V_X5R_0603
21 1 C305 10 µF, 6.3 V,0805, ±15%
Ceramiccapacitor Any 10UF_6V3_X5R_0805
22 2 C307, C505 22 NF, 50 V,0402, ±15%
Ceramiccapacitors Any 22NF_50V_X7R_0402
UM2301Bill of materials
UM2301 - Rev 2 page 47/71
Item Q.ty Ref. Part/Value Description Manufacturer Order code
23 1 C308 470 PF, 50 V,0402, ±15%
Ceramiccapacitor Any 470PF_50V_X7R_0402
24 1 C309 470 NF, 25 V,1206, ±15%
Ceramiccapacitor Any 470NF_25V_X7R_1206
25 1 C310 1.5 NF, 50 V,0402, ±10%
Ceramiccapacitor Any 1.5NF_50V_X7R_0402
26 1 C400 10 NF, 100 V,0805, ±5%
Ceramiccapacitor TDK C2012C0G2A103J125AA
27 1 C401 22 NF, 100 V,1210, ±5%
Ceramiccapacitor TDK C3225C0G2A223J160AA
28 1 C402 100 PF, 50 V,0402, ±5%
Ceramiccapacitor Any 100PF_50V_COG_0402
29 2 C403, C513 22 PF, 50 V,0402, ±5% Cer,402 Any 22PF_50V_COG_0402
30 1 C404 4.7 NF, 50 V,0402, ±15%
Ceramiccapacitor Any 4.7NF_50V_X7R_0402
31 1 C405 220NF,50V,10%
Ceramiccapacitor Any 220NF_50V_X7R_0402
32 1 C406 4.7 NF, 100 V,0603, ±10%
Ceramiccapacitor TDK CGA3E2X7R2A472K080
AA
33 1 C503 1 µF, 16 V,±10%
Ceramiccapacitor Any 1UF_16V_X5R_0402
34 2 C504, C506 1 NF, 100 V,0402, ±15%
Ceramiccapacitors Any 1NF_100V_X7R_0402
35 1 C508 2.2 µF, 25 V,0402, ±10%
Ceramiccapacitor Any 2.2UF_25V_X5R_0402
36 1 C511 220 PF, 50 V,0402, ±15%
Ceramiccapacitor Any 220PF_50V_X7R_0402
37 1 C514 2.2 NF, 50 V,0402, ±15%
Ceramiccapacitor Any 2.2NF_50V_X7R_0402
38 3 C801, C803,C807
100 NF, 50 V,0603, ±15%
Ceramiccapacitors Any 100NF_50V_X7R_0603
39 1 C802 10 NF, 50 V,0603, ±15%
Ceramiccapacitor Any 10NF_50V_X7R_0603
40 2 C804, C805 47 PF, 25 V,0603, ±15%
Ceramiccapacitors Any 47PF_25V_X5R_0603
41 1 C806 10 µF, 25 V,0805, ±10%
Ceramiccapacitor Any 10UF_25V_X7R_0805
42 1 D100 SMM4F13A TVS ST SMM4F13A-TR
43 1 D201 STPS8L30DEE Power Schottkyrectifier ST STPS8L30DEE-TR
44 1 D202 4.3V Zener, SOD323 NXP BZX384-C4V3-AK
45 1 D300 4148WS Diode, SOD323 Any Any
46 1 D400 MMBD1503A Diode, SOT23 Fairchild MMBD1503A
47 2 D500, D508 BAS521-7 Diode,DIOD_SOD523 Any Any
48 2 D501, D504 BAV99W Diode, SOT323 NXP BAV99W
49 1 D506 GREEN LED,L3.2_W2.5_H1 Wurth Elektronic 155124VS73200
UM2301Bill of materials
UM2301 - Rev 2 page 48/71
Item Q.ty Ref. Part/Value Description Manufacturer Order code
50 1 D507 RED LED,L3.2_W2.5_H1 Wurth Elektronic 155124RS73200
51 1 D509 RB520S Schottky,SOD523 Rohm RB520S
52 1 D800 USBLC6-2SC6YAutomotive verylow capacitanceESD protection
ST USBLC6-2SC6Y
53 1 J100 PJ-002A Jack CUI PJ-002A
54 1 J101 61300311121 Header Wurth Elektronic 61300311121
55 1 J500 5-826936-0 Header Te Connectivity 5-826936-0
56 2 J501, J700 6.29105E+11 USB Wurth Elektronic 629105150521
57 1 J800 48037-0001 USB Molex 48037-0001
58 1 J801 61400416021 USB Wurth Elektronic 61400416021
59 1 L101 2.2 µH, 3.8 A,±20%
Inductor,L5_W5_H4 Wurth Elektronic 74404054022
60 1 L102 NPInductor,L2.5_W2.0_H1.0
Wurth Elektronic 74438323100
61 1 L200 4.7 µH, 7 A,±20%
Inductor,L10_W10_H5 Wurth Elektronic 7447714047
62 2 L501, L502 1 K, 0.2 A,±25% Ferrite, 402 Murata BLM15AG102SN1D
63 1 L800 120 R, 0.5 A,±25% Ferrite, 603 Wurth Elektronic 74279262
64 1 M300 12 µH, 8 A Inductor, Wurth Elektronic 760 308 104 113
65 4 M600, M601,M602, M603
M320KRSTMCZ100- Screw Duratool M320 KRSTMCZ100-
66 4 M604, M605,M606, M607 D01475 Spacer Duratool D01475
67 4 M608, M609,M610, M611
HTSB-M3-15-5-1 Spacer Richco HTSB-M3-15-5-1
68 1 M619 PCB WE - 2layers PCB Any Any
69 1 M620 SPACER_3MM_MP_A6-A2, , Cover Any Any
70 1 Q202 NPN-PNP CMS, SOT363 OnSemiconductors MMDT4413
71 3 Q203, Q303,Q304 N-MOS N-channel
Power MOSFET ST STL10N3LLH5
72 3 Q301, Q400,Q700 NPN-NPN CMS, SOT363 OnSemiconducto
rs BC847CDW1T1G
73 1 Q302 NPN CMS, SOT23 DiodesIncorporated BC817-40-7-F
74 1 Q500 NPN-PNP CMS, SOT363 OnSemiconductors BC847BPDW1T1G
75 2 R100, R209 220 K, 1/16 W,±1% Resistors Any Any
76 1 R101 18 K, 1/16 W,±1% Resistor Any Any
UM2301Bill of materials
UM2301 - Rev 2 page 49/71
Item Q.ty Ref. Part/Value Description Manufacturer Order code
77 1 R104 330 K, 1/16 W,±1% Resistor Any Any
78 1 R106 120 K, 1/16 W,±5% Resistor Any Any
79 1 R107 NP Resistor Any Any
80 3 R108, R201,R705 NP Resistors Any Any
81 2 R109,R214 0 R, 1/16 W,±5% Resistors Any Any
82 3 R200,R701,R706
10 R, 1/16 W,±5% Resistors Vishay 10R_5%_0402
83 3 R202, R309,R525
1 K, 1/16 W,±1% Resistors Any Any
84 2 R204, R400 470 R, 1/16 W,±1% Resistors Any Any
85 1 R205 0.068 R, 1 W,±1% Resistor Te Connectivity TLM3ADR068FTE
86 1 R206 47 R, 1/16 W,±5% Resistor Any Any
87 2 R207, R212 3.3 K, 1/16 W,±1% Resistors Any Any
88 1 R208 75 K, 1/16 W,±1% Resistor Any Any
89 3 R210, R211,R308
10 K, 1/16 W,±1% Resistors Any Any
90 1 R213 4.7 K, 1/16 W,±1% Resistor Any Any
91 8
R215, R503,R511, R513,R527, R528,R700, R704
100 K, 1/16 W,±5% Resistors Any Any
92 2 R300, R301 4.7 R, 1/16 W,±1% Resistors Any Any
93 3 R302, R408,R521
1 M, 1/16 W,±1% Resistors Any Any
94 5R303, R406,R409, R506,R518
100 K, 1/16 W,±1% Resistors Any Any
95 5R304, R305,R306, R403,R404
470 K, 1/16 W,±1% Resistors Any Any
96 1 R307 0.022 R, 1 W,±0.01 Resistor Any Any
97 2 R401, R411 82 K, 1/16 W,±1% Resistors Any Any
98 1 R402 150 K, 1/16 W,±1% Resistor Any Any
99 2 R405, R519 22 K, 1/16 W,±1% Resistors Any Any
100 2 R407, R522 47 K, 1/16 W,±1% Resistors Any Any
UM2301Bill of materials
UM2301 - Rev 2 page 50/71
Item Q.ty Ref. Part/Value Description Manufacturer Order code
101 1 R410 2.2 K, 1/16 W,±5% Resistor Any Any
102 3 R502, R504,R505
10 K, 1/16 W,±5% Resistors Any Any
103 1 R507 2.7 K, 1/16 W,±1% Resistor Any Any
104 1 R510 180 K, 1/16 W,±1% Resistor Any Any
105 2 R512, R514 220 R, 1/16 W,±5% Resistors Any Any
106 1 R515 100 R, 1/10 W,±5% Resistor Any Any
107 1 R516 47 K, ±1% Resistor Murata NCP15WB473F03RC
108 1 R517 1 M, 1/16 W,±5% Resistor Any Any
109 1 R520 330 R, 1/16 W,±5% Resistor Any Any
110 1 R526 1 K, 1/16 W,±5% Resistor Any Any
111 3 R529, R530,R703
33 K, 1/16 W,±1% Resistors Any Any
112 1 R702 39 K, 1/16 W,±1% Resistor Any Any
113 1 R707 39 K, 1/16 W,±5% Resistor Any Any
114 2 R801, R807 NP Resistors Any Any
115 4 R802, R804,R805, R808
0 R, 1/10 W,±5% Resistors Any Any
116 2 R803, R806 330 R, 1/10 W,±5% Resistors Any Any
117 2 R809, R810 10 K, 1/10 W,±5% Resistors Any Any
118 4 TP100, TP101,TP304, TP305 WIRE_SOLDER Test point Any Any
119 8
TP102, TP200,TP506, TP507,TP508, TP509,TP510, TP511
5001 Test point Keystone 5001
120 9
TP103, TP301,TP302, TP303,TP400, TP501,TP502, TP503,TP504
TPSMD-1MM Test point Any Any
121 1 U100 LDK320M-RLow dropvoltageregulator
ST LDK320M-R
122 1 U101 NP
Step-downmonolithicswitchingregulator
ST L6984
123 1 U300 MCP14700 Driver,DFN8_L3_W3 Microchip MCP14700_DFN8
UM2301Bill of materials
UM2301 - Rev 2 page 51/71
Item Q.ty Ref. Part/Value Description Manufacturer Order code
124 1 U500 STWBC_EP
Digital controllerfor wirelessbattery chargertransmitters
ST STWBC-EP
125 1 U501 TSV521ICT CMOS op-amps ST TSV521ICT
126 1 U801 FT232R Converter,SSOP28 FTDI FT232R
UM2301Bill of materials
UM2301 - Rev 2 page 52/71
8 Board assembly and layout
The STEVAL-ISB044V1 evaluation board is designed using a low cost 2-layers PCB with all the components onthe top side.The test points allow the user to evaluate the STWBC-EP solution with probes.In addition, UART is accessible through a micro-USB connector and the SWIM is routed to a header connector.
Figure 56. STEVAL-ISB044V1 evaluation board: functional block assembly
Power Supply connections & input filtering
v
Boost Circuit
LDO (DCDC optional)
Quick Charge circuit
Demodulation circuits
STWBC-EP
Half bridge driver and LC Tank circuit
Voltage/current demodulation circuits
LED, SWIM and USB/UART debug connectors
UM2301Board assembly and layout
UM2301 - Rev 2 page 53/71
8.1 Power signals (BOOST, GND, LC)
Figure 57. STEVAL-ISB044V1 evaluation board: power signal routing
Layer 1: large GND tracks with lot of vias for high power circuits
Layer 1: Large tracks for high current circuits (booster, half bridge, LC tank)
UM2301Power signals (BOOST, GND, LC)
UM2301 - Rev 2 page 54/71
Figure 58. STEVAL-ISB044V1 evaluation board: ground plan
Full GND plan on Layer 2
Only a few noisy signalsrouted partially on this layer (PWM)
DC-DC boost signals are designed on the same layer: tracks must be wide (>2 mm) to handle high current.
UM2301Power signals (BOOST, GND, LC)
UM2301 - Rev 2 page 55/71
Figure 59. STEVAL-ISB044V1 evaluation board: DC-DC boost routing details
VIN
VDCDC
DEMAGNET
C21722 µF
R200
10R
C2065.6NF
C216
470pFQ203N-MOSSTL10N3LLH5
5
4
16 7 8
2 3C209 1NF
R215100K
TP200
1
C207
R214
0R
+ C205
D2024.3V
C208
D201
STPS8L30DEE C203
C200NP
R2050.068R
C204
L2004.7 µH
C202100NF
R2021K
R204470R
10 µF 10 µF100 µF
22 µF22 µF
Net VIN
Net L200 D201-QQ203
Net D201-C205
Net Q203R205
UM2301Power signals (BOOST, GND, LC)
UM2301 - Rev 2 page 56/71
Figure 60. STEVAL-ISB044V1 evaluation board: power GND routing details
VIN
C21722 µF
R200
Q203N-MOS
STL10N3LLH5
5
4
16 7 8
2 3
1
4
R2050.068R
R204470R
GND from R205 and C217: high currentA lot of viasONLY in this area
12 V DC
USB_VCC_QC
TP100WIRE_SOLDER
1J100
PJ-002A
231
J101
13
2
D100
SMM4F13A
C100
NP
C102
NP
C10110 µF
TP101WIRE_SOLDER1
C114
NP
C112
100NF
GND directly connected toTP101 and Capaconnect bottom side with alot of vias
10 R
GND VBOOST andGND Capa of tankon the same areaInsert many vias for high current
ONLY in this area
GND from R307:connected near GNDfrom " GND VBOOST"
Direct GND line connection
TP302
1
TP303
1
R3070.022R
VRSENSE
POWER_NODE
C300 47NF
C301 47NF
C304 47NF
C302 47NF
VDCDC
C2065.6NF
TP200
1
C207 + C205C208C203 C204C202100NF 10 µF 10 µF
100 µF22 µF22 µF
Bridge nets are designed on the top layer; traces must be very large(>2 mm).
UM2301Power signals (BOOST, GND, LC)
UM2301 - Rev 2 page 57/71
Figure 61. STEVAL-ISB044V1 evaluation board: bridge node routing details
VDCDC
VDCDC
POWER_NODE
PWM_QFOD
C300 47NFR3091K TP304
WIRE_SOLDER
1
C3031NF
C3101.5NF
C301 47NF
C304 47NF
D3004148WS
Q304N-MOSSTL10N3LLH5
51
6 7 8
2 3
Q303N-MOSSTL10N3LLH5
51
6 7 8
2 3
TP305WIRE_SOLDER
1
Q302NPN
1
23
M300
C302 47NFBRIDGE_NODE
12 µH
Net VDCDC-Q303
Net bridge node Net power node
Net GND
UM2301Power signals (BOOST, GND, LC)
UM2301 - Rev 2 page 58/71
Figure 62. STEVAL-ISB044V1 evaluation board: shunt resistor routing details
Direct GND line connection
C3031NF
TP302
1
Q304N-MOSSTL10N3LLH5
5
4
16 7 8
2 3
1 2 3
TP303
1
R3070.022R
VRSENSE
VRSENSE trace between Q304 and R307must be very short
GND -R307 connecteddirected to GND - VBOOST
8.2 EMI components
Figure 63. STEVAL-ISB044V1 evaluation board: EMI components (1 of 2)
C206
C202
R214 - C216
VDCDC
C2065.6NF
C216
470pF
TP200
1
C207
R214
0R
+ C205C208
D201
STPS8L30DEE C203 C204C202100NF
R2021K
10 µF 10 µF100 µF
22 µF22 µF
R214 and C216very close to D201
C202 and C206 near C205 VDCDCand C205 GND
UM2301EMI components
UM2301 - Rev 2 page 59/71
Ceramic capacitors (C100, C101, C103, C112, C114 and C100) for EMI and filters must be placed close to thesupply input and L101.
Figure 64. STEVAL-ISB044V1 evaluation board: EMI components (2 of 2)
12 V DC
USB_VCC_QC
TP100WIRE_SOLDER
1
J100
PJ-002A
231
J101
13
2
D100
SMM4F13A
C100
NP
C102
NP
C10310 µF
C10110 µF
TP101WIRE_SOLDER1
L1012.2 µH
C114
NP
C112
100NF
UM2301EMI components
UM2301 - Rev 2 page 60/71
8.3 STWBC-EP layout
Figure 65. STWBC-EP digital controller layout
C112
C100
C103
C501
L501
C503
L502
C502
R505
C501
100NF
L5011K
VDD
29
VDD
A13
DEMAGNET22
SYMBOL_DETECT23
C501-L501 nearVDDA (pin13)
C503-C502-L502near VDD (pin29)
R505 near Reset(pin 28)
STWBC-EPDigital controller
DCDC_DACDCDC_DRV
L5021K
C5031UF
R50510K
C502100NF
VDD
29
VOUT31
DCDC_DRV21
DCDC_DAC24
NRST28 SWIM27SWIM
RESET
UM2301STWBC-EP layout
UM2301 - Rev 2 page 61/71
8.4 Current sensing and demodulation
Figure 66. STEVAL-ISB044V1 evaluation board: current sensing
Q301
R308
C307
Direct GND line connection
VDD_STWBC
ISENSE
IDEMOD
C30722NF
R304
470KR306470KR305
470K
R303100K
Q301NPN-NPN
2 31
456
R30810K
R3070.022R
TP301
1
R3021M
C308470PF
VRSENSE
C307 near Isense input (pin 19) Current amplifier
(Q301, R and C) near VRSENSE
Warning:R308 GND is done througha trace connected to GNDon Rsense R307Don't mix this track withground plane
UM2301Current sensing and demodulation
UM2301 - Rev 2 page 62/71
Figure 67. STEVAL-ISB044V1 evaluation board: current demodulation
C112
C100
C501
L501
C502
L502
C503
R505
Q301
R308
U501
R517
C513
C512 C511
Q301C112
C100
C502
L502
C503
R505
Q301
R308U501
R517
C513
C512 C511
Q301
C510R519 R518
VDD_STWBCVDD_STWBC
IDEMOD
C511
220PF
D504
BAV99W
3
1
2
R519
22K
C51322PF
TP508
1
C512100NF
+
-
U501
TSV521ICT
1 +IN
3 -IN
2 V-
5V+
4OUT
R518100K
C510
100NF
C509
100NF
R520330R
C5082.2 µF
R517
1M
CURRENT_DEMOD
VBUSISENSE
VTARGETQFOD_ADC
TANK_VOLTAGE15
VTARGET16
QFOD_ADC17
COIL_TEMP18
ISENSE19
VMAIN20
CURRENT_DEMOD12
TANK_VOLTAGE
CURRENT_DEMOD
C501, R518, R519 near Current_demod input(U500 pin 12)
Current demod (U501, R and C) nearCurrent amplifier output (Q301)
UM2301Current sensing and demodulation
UM2301 - Rev 2 page 63/71
9 References
Freely available on www.st.com:1. STWBC-EP datasheet2. STEVAL-ISB044V1 data brief (DB3408): "Qi MP-A10 15 W wireless charger TX evaluation kit based on
STWBC-EP"3. STSW-ISB044FW data brief (DB3409): "Firmware for the STEVAL-ISB044V1 wireless power transmitter
evaluation board based on STBWC-EP"4. STSW-STWBCFWDT data brief (DB3410): "STWBC firmware downloader tool"5. STSW-STWBCGUI data brief (DB3418): "Graphical user interface for wireless power transmitter evaluation
boards based on the STWBC chip family"
UM2301References
UM2301 - Rev 2 page 64/71
Revision history
Table 7. Document revision history
Date Version Changes
30-Oct-2017 1 Initial release.
14-May-2018 2 Updated Figure 4. STEVAL-ISB044V1 evaluation board: power supply selection and Section 7 Bill ofmaterials.
UM2301
UM2301 - Rev 2 page 65/71
Contents
1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Hardware description and setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1 System block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 STEVAL-ISB044V1 wireless transmitter board overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 STWBC-EP pinout and pin description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Download procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.1 STSW-STWBCGUI software installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Firmware download via STSW-STWBCGUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.1 Download procedure with a new chip (never been programmed) . . . . . . . . . . . . . . . . . . . 10
3.2.2 Firmware upgrade procedure (chip already programmed). . . . . . . . . . . . . . . . . . . . . . . . . 14
3.3 Erasing firmware procedure using STVP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3.2 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.4 Firmware download with command line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.1 Firmware download with written chip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.2 Firmware download with blank chip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.5 STVP file creation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.6 Firmware download with STVP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4 Evaluation equipment setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
4.1 External power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.2 USB charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.3 UART configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5 GUI and evaluation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.1 Status LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.2 Test procedure for board calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.2.1 Presence detection calibration procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
5.2.2 QFOD calibration procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
UM2301Contents
UM2301 - Rev 2 page 66/71
5.3 Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5.4 Stand-by consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
7 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
8 Board assembly and layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
8.1 Power signals (BOOST, GND, LC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.2 EMI components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
8.3 STWBC-EP layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.4 Current sensing and demodulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
9 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
UM2301Contents
UM2301 - Rev 2 page 67/71
List of figuresFigure 1. STEVAL-ISB044V1 evaluation board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Figure 2. STWBC-EP block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Figure 3. STEVAL-ISB044V1 evaluation board: connectors, LEDs and test points . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Figure 4. STEVAL-ISB044V1 evaluation board: power supply selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Figure 5. STWBC-EP pinout in MP-A10 configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Figure 6. STSW-STWBCGUI installation file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 7. Windows Device Manager: COM port selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 8. STSW-STWBCGUI start screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Figure 9. Dongle connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Figure 10. Firmware download via STSW-STWBCGUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 11. Firmware file selection message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Figure 12. Firmware file selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Figure 13. Power on message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Figure 14. USB-to-UART dongle to STEVAL-ISB044V1 connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Figure 15. DOS window: download in progress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Figure 16. STVP configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Figure 17. STEVAL-ISB044V1 evaluation board: ST-LINK connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Figure 18. STVP core selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Figure 19. STVP download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Figure 20. STVP wrong device selected alert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Figure 21. STVP incompatibility device action query . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Figure 22. STSW-STWBCGUI command line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Figure 23. STSW-STWBCGUI command line with blank chip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Figure 24. STSW-STWBCGUI: convert CAB to STVP files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Figure 25. Selecting the CAB file to be converted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Figure 26. STVP project file name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Figure 27. STVP files created . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Figure 28. STVP file selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Figure 29. STEVAL-ISB044V1 evaluation board: test setup configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Figure 30. STEVAL-ISB044V1 evaluation board: external power supply connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Figure 31. STEVAL-ISB044V1 evaluation board: USB charger connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Figure 32. STEVAL-ISB044V1 evaluation board: UART connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Figure 33. STSW-STWBCGUI: object detected and charge in progress. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Figure 34. STSW-STWBCGUI: Qi protocol window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Figure 35. STSW-STWBCGUI: Qi monitor window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Figure 36. STSW-STWBCGUI: Parameters window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Figure 37. STSW-STWBCGUI: modified parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Figure 38. STSW-STWBCGUI: saving modified parameters (Dump to bin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Figure 39. STSW-STWBCGUI: bin file backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Figure 40. STSW-STWBCGUI: CAB file patch button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Figure 41. STSW-STWBCGUI: start auto-calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Figure 42. STSW-STWBCGUI: presence detection test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Figure 43. STSW-STWBCGUI: test result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Figure 44. STSW-STWBCGUI: QFOD test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Figure 45. STSW-STWBCGUI: QFOD test result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Figure 46. Efficiency setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Figure 47. STEVAL-ISB044V1 evaluation board: efficiency performance with MP1B Rx . . . . . . . . . . . . . . . . . . . . . . . . 38Figure 48. STEVAL-ISB044V1 circuit schematic (1 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Figure 49. STEVAL-ISB044V1 circuit schematic (2 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Figure 50. STEVAL-ISB044V1 circuit schematic (3 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Figure 51. STEVAL-ISB044V1 circuit schematic (4 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Figure 52. STEVAL-ISB044V1 circuit schematic (5 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
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Figure 53. STEVAL-ISB044V1 circuit schematic (6 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Figure 54. STEVAL-ISB044V1 circuit schematic (7 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Figure 55. STEVAL-ISB044V1 circuit schematic (8 of 8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Figure 56. STEVAL-ISB044V1 evaluation board: functional block assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Figure 57. STEVAL-ISB044V1 evaluation board: power signal routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Figure 58. STEVAL-ISB044V1 evaluation board: ground plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Figure 59. STEVAL-ISB044V1 evaluation board: DC-DC boost routing details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Figure 60. STEVAL-ISB044V1 evaluation board: power GND routing details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57Figure 61. STEVAL-ISB044V1 evaluation board: bridge node routing details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58Figure 62. STEVAL-ISB044V1 evaluation board: shunt resistor routing details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Figure 63. STEVAL-ISB044V1 evaluation board: EMI components (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Figure 64. STEVAL-ISB044V1 evaluation board: EMI components (2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60Figure 65. STWBC-EP digital controller layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Figure 66. STEVAL-ISB044V1 evaluation board: current sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Figure 67. STEVAL-ISB044V1 evaluation board: current demodulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
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List of tablesTable 1. STEVAL-ISB044V1 electrical performance: input characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Table 2. STEVAL-ISB044V1 electrical performance: system characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Table 3. Connector description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Table 4. Test point description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Table 5. STWBC-EP pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Table 6. STEVAL-ISB044V1 bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Table 7. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
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