ST STEVAL-USBI2CFT 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
Versatile USB- I2C bridge for communication and programming of ST wireless
charging IC
UM3226
User manual
UM3226 - Rev 1 - September 2023
For further information contact your local STMicroelectronics sales office. www.st.com

1 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.
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Software installation
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2 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
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Hardware connection
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Figure 3. STEVAL-USBI2CFT hardware connection
Table 1. List of supported WLC evaluation kit
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
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Hardware connection
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3 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
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Interface description
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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.
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Interface description
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4 Component layout
Figure 7. STEVAL-USBI2CFT PCB layout
Figure 8. STEVAL-USBI2CFT top layout
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Component layout
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Figure 9. STEVAL-USBI2CFT bottom layout
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Component layout
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5 Schematic diagrams
Figure 10. STEVAL-USBI2CFT circuit schematic
DM
20
DP
21
STEST_RESETIN
2
RESETIN
3
VBUS_DET
26
AGND
24
GND
19
GND
29
VCCIN 23
VOUT3V3 22
VCCIO 6
DIO5/SCL 12
DIO6/SDA 13
DIO8/INT 15
DIO1/RTS 8
DIO2/CTS 9
DIO3/RXD 10
DIO4/TXD 11
DIO0 7
DIO9 16
DIO10 17
DIO11 18
DIO13 28
DIO7 14
DCNF0
4
DCNF1
5
DIO12 27
FSOURCE
25
DEBUGGER
1
U1
FT260Q
12
47pF
C7
1 2
33R R2
12
47pF
C8
1 2
33RR1
1 2
5k1
R4
1 2
5k1
R5
GND GND
GND GND
GND
VBUS
12
100pF
C9
1 2
1M
R6
GND
DP
DM
DM
DP
VBUS
12
4u7
C1
12
100n
C2
12
4u7
C3
12
100n
C4
12
4u7
C5
12
100n
C6
GND GND GND
VOUT3V3 VCCIO
OUT 5 IN
1
EN
3
GND
2
BYP 4
U3 LDK120M-R
2u2
C11
GND
VCCIO 1 21k0
R16
1 2
2k0
R17
1 2
1k33
R18
1 2
620R
R19
1 2
390R
R20
12
JP2
12
JP3
12
JP4
1 2
N.M.
R7
1 2
N.M.
R8
1 2
4k7
R9
1 2
10k
R10
1 2
4k7
R11
12
4u7
C10
GND
1 2
5k1
R3
VBUS
STEST_RESETN
RESETN
DCNF0
DCNF1
DEBUGGER
SCL
SDA
INT
RTS
CTS
RXD
TXD
GND
GND GND
D2
D Schottky
VBUS
SDA
SCL
INT
VCCIO
DIO11
DIO12
VCCIO
VBUS
VOUT3V3
VCCIO VCCIO VCCIO VCCIO VCCIO
RESETN
STEST_RESETN
DCNF1
DCNF0
DEBUGGER
TXD
RXD
CTS
RTS
VOUT3V3
VBUS
1
2
3
4
5
6
P1
Header 6
1 2
4k7
R14
1 2
4k7
R15
VCCIO
12
JP1
SCL SDA
1 2
4k7
R13
INT
1.8V
2.5V
3.3V
1
J3
1
J4
1
J5
1
J6
1
J7
1
J8
1
J2
GND A1
GND B12
VBUS A4
CC1 A5
DP1 A6
DN1 A7
SBU1 A8
VBUS A9
GND A12
VBUS B9
SBU2 B8
DN2 B7
DP2 B6
CC2 B5
VBUS B4
GND B1
SHELL SHELL
SHELL
SHELL
SHELL SHELL
SHELL
SHELL
J1
629722000214
D1
RED
1 2
4k7
R12
PWR
VBUS
GND
DIO10
DIO10
VCCIO
GND
1 2
N.M.
R22
1 2
N.M.
R21
13
2
JP5
I/O1
1
GND
2
I/O2
3I/O2 4
VBUS 5
I/O1 6
U2
USBLC6-2SC6
VBUS
GND
UM3226 - Rev 1 page 9/17
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Schematic diagrams

6 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
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Bill of materials
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7 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
1. This code identifies the STEVAL-USBI2CFT expansion board first version. It is printed on the board PCB.
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Board versions
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8 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:
1. 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
2. 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.
À des fins d'évaluation uniquement. Ce kit génère, utilise et peut émettre de l'énergie radiofréquence et n'a pas
été testé pour sa conformité aux limites des appareils informatiques conformément aux règles d'Industrie Canada
(IC).
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).
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Regulatory compliance information
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Revision history
Table 4. Document revision history
Date Revision Changes
18-Sep-2023 1 Initial release.
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Contents
1Software installation ...............................................................2
2Hardware connection ..............................................................3
3Interface description...............................................................5
4Component layout .................................................................7
5Schematic diagrams ...............................................................9
6Bill of materials...................................................................10
7Board versions ...................................................................11
8Regulatory compliance information ...............................................12
Revision history .......................................................................13
List of tables ..........................................................................15
List of figures..........................................................................16
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Contents
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List of tables
Table 1. List of supported WLC evaluation kit.......................................................4
Table 2. STEVAL-USBI2CFT bill of materials ...................................................... 10
Table 3. STEVAL-USBI2CFT versions .......................................................... 11
Table 4. Document revision history ............................................................. 13
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List of tables
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List of figures
Figure 1. STEVAL-USBI2CFT ................................................................1
Figure 2. STEVAL-USBI2CFT hardware connection with STEVAL-WLC98RX ...............................3
Figure 3. STEVAL-USBI2CFT hardware connection .................................................4
Figure 4. STSW-WPSTUDIO main interface ......................................................5
Figure 5. Connection ......................................................................5
Figure 6. Confirmed connection ...............................................................6
Figure 7. STEVAL-USBI2CFT PCB layout ........................................................7
Figure 8. STEVAL-USBI2CFT top layout .........................................................7
Figure 9. STEVAL-USBI2CFT bottom layout ......................................................8
Figure 10. STEVAL-USBI2CFT circuit schematic ....................................................9
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List of figures
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Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2023 STMicroelectronics – All rights reserved
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