User's Manual

WCT-15W1COILTX Reference Design System User Guide, Rev. 2
2 Freescale Semiconductor
2 System Features
The WCT-15W1COILTX reference board has following features:
• Compliant with WPC Qi specifications to support up to15W power transfer.
• Compliant with WPC low power (5W) specification.
• Integrated digital demodulation in chip.
• Supports two-way communication, transmitter to receiver by FSK and receiver to transmitter
by ASK.
• Support multiple types RX modulation signals (AC capacitor, AC resistor and DC resistor).
• Support low power FOD.
• Super low standby power by Freescale touch technology.
• Support various power control techniques: frequency control, duty cycle control, phase shift
control and topology switch.
• LED for RX and TX alignment indication.
• Input voltage/current, coil current sensing for protection.
• Free position charging.
3 Getting Started
WCT-15W1COILTX is easy to use, and can convenience to charging the mobile equipment that support
the Qi wireless charging, below is the detail step to power up the system and use.
Step 1: power on the Transmitter, plug the 12V adaptor to the AC power line, and plug the adaptor output
port to the transmitter input port, and the LED D4 will be blanking.
Figure-2 WCT-15W1COILTX powered on
Step 2: Place the wireless charging RX or some equipment that support the Qi wireless charger (such as
cell phone, battery and so on) on the WCT-15W1COILTX’s coil surface, then the transmitter will charge