The P9222-R/RN is an integrated single-chip wireless power

receiver IC (Rx) for up to 5W applications implementing in-band,

bi-directional data communication with no additional circuitry. The

device receives an AC power signal from a wireless power

transmitter, such as the P9235A-RB WPC Qi BPP Wireless

Transmitter IC, and converts it to a rectified output voltage, which

can be used to power devices or supply the battery charger input

in a wide range of wireless power applications. The receiver (Rx)

integrates a high-efficiency synchronous full bridge rectifier (SFBR)

and control circuits that enable bi-directional communication from

and to the transmitter (Tx) for optimized power delivery.

The P9222-R/RN is highly efficient at light loads and very wellsuited for low-power applications such as earbuds case charging.

A unique Ping detect feature gives the user an early indication of

the wireless charger connection and improves thermal

performance at the end of complete battery charging. Low undervoltage lockout (UVLO) threshold allows the receiver to start up

even with a weaker digital ping strength signal from a transmitter

over an extended area.

The device includes over-temperature and under/over-voltage

protection. The internal over-voltage clamping protects the rectifier

output from rising above the overvoltage level when the receiver is

quickly moved from a low-coupling position to a high-coupling

position. The integrated 32-bit ARM® Cortex®-M0 processor

(trademark of ARM, Ltd.) offers a high level of programmability and

design parameters that can be easily configured through the I2C

interface or an external EEPROM.

The P9222-R default firmware factory programmed in internal OTP

is WPC 1.2.4 Qi Baseline Power Profile (BPP) compatible. The

P9222-RN default factory firmware programmed in internal OTP is

latest WPC 1.3 Qi Baseline Power Profile (BPP) compatible.

The P9222-R/RN is available in a RoHS ultra-small WLCSP-40

package and it is rated for a 0 to 85°C ambient operating

temperature range.

Features

 Ultra-compact, efficient wireless power receiver for up to

5W applications

 P9222-R default firmware is WPC 1.2.4 Qi Baseline Power

Profile (BPP) compatible

 P9222-RN default firmware is WPC 1.3 Qi Baseline Power

Profile (BPP) compatible

 Ping detection for reduced power consumption at end of

charging

 Low under-voltage lockout (UVLO) for low voltage start-up for

faster connections over an extended area

 ASK and FSK modulation/demodulation for Bi-directional

Communication: Rx-to-Tx and Tx-to-Rx

 Supports bi-directional data communication

 Easy configuration of design parameters through I2C interface

on an external EEPROM

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

 Internal over-voltage clamping

 Low standby and operating mode power consumption

 High performance low dropout (LDO) regulator with low

RDS(on) and programmable current limiting

 Supports I2C slave/master mode

 40-WLCSP: 5 × 8 ball array, 2.28 × 3.38 mm, 0.4mm pitch