Contents
1 Get started ........................................................................2
2 Reference design specifications ...................................................3
3 Overview of the Board .............................................................4
3.1 Test points ....................................................................5
3.2 Basic operating modes..........................................................6
3.3 Functional check ...............................................................6
4 Graphical user interface (GUI)......................................................7
4.1 Connecting STWLC38 to PC GUI .................................................7
4.2 Patch and configuration files .....................................................8
4.3 Configuration file generation .....................................................8
4.4 Header file ...................................................................10
4.5 Header file generation .........................................................10
4.6 Programming the device .......................................................12
5 Device description and operation .................................................14
5.1 System block diagram .........................................................14
5.2 Integrated power rectifier .......................................................15
5.3 Internal ADC channels monitor ..................................................15
5.4 Main LDO regulator............................................................15
5.5 Chip under voltage lockout......................................................16
5.6 Chip enable ..................................................................16
5.7 Power up sequence ...........................................................16
5.8 LDOs........................................................................16
5.9 Protections overview...........................................................16
5.9.1 Soft overvoltage protection (SOVP) .........................................18
5.9.2 Hard overvoltage protection (HOVP).........................................19
5.9.3 Firmware OVP .........................................................21
5.9.4 Overcurrent protections (OCP) .............................................21
5.9.5 Overtemperature protections (OVTP) ........................................23
5.9.6 NTC protection .........................................................25
5.9.7 Foreign object detection (FOD) .............................................26
5.10 WPC Qi wireless power transfer .................................................27
5.10.1 Wireless power interface..................................................27
5.10.2 Qi Baseline Power Profile .................................................28
5.10.3 Qi Extended Power Profile (EPP) ...........................................29
5.11 Bidirectional communication ....................................................29
UM3154
Contents
UM3154 - Rev 2
page 75/81
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