The P9412 is a 30W highly integrated single-chip

wireless power Wattshare™ transmitter/receiver IC

(TRx) with a high-performance capacitive divider.

The device can be configured to receive or transmit

AC power through magnetic induction. When the

device is configured as a wireless power transmitter

(Tx), it uses on-chip full/half-bridge inverter, PWM

generator, modulator/demodulator (for

communication) and micro controller to produce an

AC power signal to drive external L-C tank. As a

wireless power receiver (Rx), the device receives

AC power from a wireless transmitter and converts it

to a rectified output voltage, which can be used to

power downstream devices or supply the charger

input in mobile applications.

The P9412 integrates a high-efficiency synchronous

full bridge rectifier and control circuitry to modulate

the load and send message packets to the

Transmitter for optimized power delivery. The

device features Multiple-Time Programmable (MTP)

non-volatile memory which allows easy firmware

updates.

The P9412 includes over-current, over-voltage, and

over-temperature protections. Fault conditions are

managed by an industry-leading 32-bit ARM®

Cortex®-M0 processor offering high programmability

with low standby power ideal for mobile

applications. The processor can also control GPIOs

to indicate operating and fault modes. The device is

available in a WLCSP-81 package.

Applications

• Smart phone

• Other mobile applications

Features

• Single-chip Magnetic Induction Wireless Power

Transmitter/Receiver

• WPC 1.3 compatible

• Supports proprietary modes

• Delivers up to 30W as a receiver

• Delivers over 6W as a transmitter

• Integrated high-performance synchronous

rectifier, LDO, and capacitor divider

• Reliable over-voltage clamping

• Best-in-class EMI performance (in Bypass mode)

• Proprietary Rx-to-Tx modulation/demodulation for

two-way communication

• Tx-to-Rx (Backchannel) communication

• 24kB MTP non-volatile memory for expanded

feature support

• Embedded 32-bit ARM® Cortex®-M0 processor

• Supports I2C 400kHz standard interface and

GPIOs

• 0.4mm pitch WLCSP-81 4.02 × 4.01 mm package