Versatile USB-I2C Bridge For Communication And Programming Of ST Wireless Charging IC User Manual
Introduction
The STEVAL-USBI2CFT is a versatile USB-I2C bridge for communication and programming of ST wireless charging IC, and evaluation boards, with the STSW-WPSTUDIO software.
Figure 1. STEVAL-USBI2CFT
Software installation
The STEVAL-USBI2CFT is based on the FT260Q, USB HID to I2C bus convertor. The FT260Q does not require any additional software drivers.
The Windows operating system automatically installs the necessary driver after the first USB plug-in.
Hardware connection
Before starting the communication with a wireless receiver or transmitter, the dongles shall be correctly connected to each other. Connect GND of bridge with GND of evaluation board, continue with connecting of SDA, SCL, and INT.
The STEVAL-USBI2C board includes an internal level-shifter.
The voltage level can be changed soldering one of the soldering bridges.
The voltage can be set to 1.8, 2.5 or 3.3 V depending from what solder bridge was soldered.
Ensure that the target evaluation kit is connected to the USB-I2C bridge and the bridge is connected to the PC with the STSW-WPSTUDIO software installed.
The STSW-WPSTUDIO can connect a maximum of two USB-I2C converters, allowing PTx and PRx to be evaluated simultaneously.
Figure 2. STEVAL-USBI2CFT hardware connection with STEVAL-WLC98RX
Figure 3. STEVAL-USBI2CFT hardware connection
| Part number | PRx/PTx | Description |
| STEVAL-WBC86TX | PTx | 5 W PTx for general application |
| STEVAL-WLC98RX | PRx | Up to 50 W application |
| STEVAL-WLC38RX | PRx | 5/15 W PRx for general application |
| STEVAL-WLC99RX | PRx | Up to 70 W application |
Interface description
The STSW-WPSTUDIO main interface consists of three main sections: the top menu, the side menu bar, and the output window.
The side menu bar selects the output in the output window.
Figure 4. STSW-WPSTUDIO main interface
Connect the wireless receiver or transmitter to GUI. Select the correct device on the evaluation board.
Figure 5. Connection
The evaluation board was correctly connected to GUI.
Figure 6. Confirmed connection
The wireless receiver or transmitter setup is now ready to use. For the detail information about configuration, possibilities and features, follow the User Manual of the selected Wireless receiver or transmitter board.
Component layout
Figure 7. STEVAL-USBI2CFT PCB layout
Figure 8. STEVAL-USBI2CFT top layout
Figure 9. STEVAL-USBI2CFT bottom layout
Schematic diagrams
Figure 10. STEVAL-USBI2CFT circuit schematic
Bill of materials
Table 2. STEVAL-USBI2CFT bill of materials
| Item | Q.ty | Ref. | Part/value | Description | Manufacturer | Order code |
| 1 | 2 | 6 | R9, R11, R12, R13, R14, R15 | 4k7 | Vishay/Dale | CRCW06034K70JNEC |
| 2 | 3 | 4 | C1, C3, C5, C10 | 4u7 | Wurth | 885012106012 |
| 3 | 4 | 3 | C2, C4, C6 | 100n | Wurth | 885012206071 |
| 4 | 5 | 3 | R3, R4, R5 | 5k1 | Vishay/Dale | CRCW06035K10FKEAC |
| 5 | 6 | 2 | C7, C8 | 47pF | Wurth | 885012006055 |
| 6 | 9 | 2 | R1, R2 | 33R | Vishay/Dale | CRCW060333R0JNEB |
| 7 | 12 | 1 | C9 | 100pF | Wurth | 885012206077 |
| 8 | 13 | 1 | C11 | 2u2 | Wurth | 885012106011 |
| 9 | 14 | 1 | D1 | Wurth | 150060RS75000 | |
| 10 | 15 | 1 | D2 | ST | STPS1L60ZF | |
| 11 | 16 | 1 | J1 | Wurth | 629722000214 | |
| 12 | 18 | 1 | P1 | Wurth | 61300611021 | |
| 13 | 19 | 1 | R6 | 1M | Vishay/Dale | CRCW06031M00JNEB |
| 14 | 20 | 1 | R10 | 10k | Vishay/Dale | CRCW060310K0JNEAC |
| 15 | 21 | 1 | R16 | 1k0 | Vishay/Dale | CRCW06031K00JNEC |
| 16 | 22 | 1 | R17 | 2k0 | Vishay/Dale | CRCW06032K00JNEAC |
| 17 | 23 | 1 | R18 | 1k33 | Vishay/Dale | CRCW06031K33FKEA |
| 18 | 24 | 1 | R19 | 620R | Vishay/Dale | CRCW0603620RFKEAC |
| 19 | 25 | 1 | R20 | 390R | Wishay/Dale | CRCW0603390RFKEAC |
| 20 | 26 | 1 | U1 | FTDI | FT260Q-T | |
| 21 | 27 | 1 | U2 | ST | USBLC6-2SC6 | |
| 22 | 28 | 1 | U3 | ST | LDK120M-R |
Board versions
Table 3. STEVAL-USBI2CFT versions
| FG version | Schematic diagrams | Bill of materials |
| STEVAL$USBI2CFTA(1) | STEVAL$USBI2CFTA- schematic diagrams | STEVAL$USBI2CFTA-bill of materials |
- This code identifies the STEVAL-USBI2CFT expansion board first version. It is printed on the board PCB.
Regulatory compliance information
Notice for US Federal Communication Commission (FCC)
For evaluation only; not FCC approved for resale
FCC NOTICE – This kit is designed to allow:
- Product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and
- Software developers to write software applications for use with the end product.
This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter 3.1.2.
Notice for Innovation, Science and Economic Development Canada (ISED)
For evaluation purposes only. This kit generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to Industry Canada (IC) rules.
Notice for the European Union
This device is in conformity with the essential requirements of the Directive 2014/30/EU (EMC) and of the
Directive 2015/863/EU (RoHS).
Notice for the United Kingdom
This device is in compliance with the UK Electromagnetic Compatibility Regulations 2016 (UK S.I. 2016 No. 1091) and with the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (UK S.I. 2012 No. 3032).
Revision history
Table 4. Document revision history
| Date | Revision | Changes |
| 18-Sep-2023 | 1 | Initial release. |
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Documents / Resources
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ST Versatile USB-I2C Bridge For Communication And Programming Of ST Wireless Charging IC [pdf] User Manual STEVAL-USBI2CFT, Versatile USB-I2C, Bridge For Communication, And Programming, Of ST Wireless, Charging IC |
