Test Points; Figure 3. Connectors And Test Points - ST STEVAL-WBC86TX User Manual

• CBT1 and CBT2 are bootstrapping capacitors, which ensure the proper functionality of the integrated
inverter. This should be considered during PCB design, as these nets generate noise and should therefore
be routed separately from sensitive circuits.
• ASK demodulation circuit - apart from transferring power, the power signal is also used for receiver to
transmitter communication. The communication signal is extracted from the power signal using the ASK
demodulation circuit and fed into the VS pin of STWBC86 for processing. For further details, refer to
Section 4.12.1 ASK
• USB/I2C converter - provides a communication channel between a PC and STWBC86. LED D6 (red)
indicates the I2C converter is powered, D4 (yellow) indicates that STWBC86 is connected to the GUI. LED
D5 (green) indicates the I2C communication was initialized and is ready. Switch S1 resets the converter.
Please note that header P2 connects the converter's I2C signals to the STWBC86 I2C signals. Short the
corresponding pins with a jumper to establish a connection between the two ICs.
• Power input (USB Type-C® connector/jack/pin header) - 3 separate inputs can be used to power the board,
but only one is used at a time. Therefore, it is necessary to select the input using a jumper on header P1.
• Red LED (D3) - connected to GPIO0, can be configured to signal various conditions (power ready,
communication active etc.).
2.1

Test points

The STEVAL-WBC86TX
UM3161 - Rev 1
communication.
features several connectors and test points to provide easy access to key signals.
Figure 3. Connectors and test points
UM3161
Test points
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