User guide

5.2 Modules explanation
Figure 4 WCT_MP board modules overview
• Controller
The Freescale WCT1012 chip is the central controller of WCT_15W1COILTX board. It has
rich peripherals with low power consumption. It processes communication signals, controls
power transfer start/stop, and controls a full bridge PWM inverter for output power control.
These are the peripherals used in this application:
o Two PWM channels for full bridge DC/AC inverter control
o Three Timers for system timers and communication
o ADC for input voltage and current, coil current sampling, temperature sensing, and quality
factor detecting
o DAC for generate reference voltage for LDO to produce driver signal for quality detecting
circuit
WCT1012
Input 12V DC
AUX Power
FB Inverter
JTAG Connector
To the coil
UART COM port
Sensing circuit
Q factor measurement
circuit
WCT1012 15W Single Coil TX V3.0 Reference Design System User’s Guide, Rev. 0, 09/2015
4 Freescale Semiconductor