ST STEVAL-USBI2CFT Bedienungsanleitung
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.
UM3226
Software installation
UM3226 - Rev 1 page 2/17
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
UM3226
Hardware connection
UM3226 - Rev 1 page 3/17
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
UM3226
Hardware connection
UM3226 - Rev 1 page 4/17
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
UM3226
Interface description
UM3226 - Rev 1 page 5/17
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.
UM3226
Interface description
UM3226 - Rev 1 page 6/17
4 Component layout
Figure 7. STEVAL-USBI2CFT PCB layout
Figure 8. STEVAL-USBI2CFT top layout
UM3226
Component layout
UM3226 - Rev 1 page 7/17
Figure 9. STEVAL-USBI2CFT bottom layout
UM3226
Component layout
UM3226 - Rev 1 page 8/17
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
UM3226
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
UM3226
Bill of materials
UM3226 - Rev 1 page 10/17
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