Contents
1 Reference design specifications ...................................................3
2 Overview of the board .............................................................4
2.1 Test points ....................................................................5
2.2 Basic operating modes..........................................................6
3 Graphical user interface (GUI)......................................................7
3.1 Connecting STWBC86 to PC GUI.................................................7
3.2 Patch and Configuration files.....................................................8
3.3 Configuration file generation .....................................................9
3.4 Header file ...................................................................10
3.5 Header file generation .........................................................11
3.6 Programming the device .......................................................13
4 Device description and operation .................................................15
4.1 System block diagram .........................................................15
4.2 Integrated power inverter .......................................................15
4.3 ADC ........................................................................16
4.4 LDOs........................................................................17
4.5 Power-up sequence ...........................................................17
4.6 UVLO .......................................................................17
4.7 Chip reset....................................................................17
4.8 Protections overview...........................................................17
4.8.1 Overcurrent protection (OCP) ..............................................17
4.8.2 Overvoltage protection (OVP) ..............................................18
4.8.3 Overtemperature protection (OVTP) .........................................19
4.8.4 NTC .................................................................19
4.9 Foreign object detection (FOD) ..................................................21
4.9.1 FOD tuning ............................................................21
4.10 EPT reason ..................................................................30
4.11 WPC Qi wireless power transfer .................................................32
4.11.1 Wireless power interface..................................................33
4.12 Bidirectional communication ....................................................33
4.12.1 ASK communication .....................................................35
4.12.2 FSK communication .....................................................37
4.12.3 Most common Qi communication packets .....................................38
4.13 I2C interface .................................................................39
4.13.1 Data validity ...........................................................39
UM3161
Contents
UM3161 - Rev 1
page 72/78
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