Called P9418, it can also deliver up to 5W as a wireless power transmitter.
Power is transferred through an external LC coupling tank.
As a receiver, the device has a all-n-channel synchronous full bridge rectifier to convert the incoming ac power signal from the LC tank pick-up to dc, as well as a control circuit that modulates loading to send message packets back to the transmitter. LDOs are included to regulate output.
As a wireless power transmitter, P9418 has an on-chip full/half bridge inverter, a pulse-width modulator and a modulator/demodulator for communication. The on-chip MCU (32bit Arm Cortex-M0) produces the signal needed to drive the L-C tank, and handles faults.
The processor can support proprietary charging protocols for high-power applications.
Programmable non-volatile memory allows control firmware and device functions to be updated, and wired communication is through 400kHz Supports I2C and GPIOs. Over-temperature and voltage protection is included.
Packaging is a 7 x 10 ball (0.4mm pitch) 2.8 x 4.2 x 0.5mm 70-WLCSP.
P9418 builds on the earlier P9415 wireless power receiver and provides an easy upgrade path for existing customers. The new P9418 also delivers advanced telemetry and .
