Overview
Description
The P9222-R is an integrated single-chip wireless power receiver IC (Rx) for up to 5W applications. The P9222-R is highly efficient at light loads and very well-suited for low-power applications such as earbud 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. A 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 undervoltage/overvoltage protection. The internal overvoltage 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 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 is available in a RoHS ultra-small WLCSP-40 package and it is rated for a -40 °C to +85 °C ambient operating temperature range.
Features
- Ultra-compact, efficient wireless power receiver for up to 5W applications
- WPC 1.2 Qi Baseline Power Profile (BPP) compatible
- Optimized light load efficiency for low-power applications
- Ping detection for reduced power consumption at the end of charging
- Low undervoltage lockout (UVLO) for low-voltage start-up for faster connections over an extended area
- ASK and FSK modulation/demodulation for bidirectional communication: Rx-to-Tx and Tx-to-Rx
- Easy configuration of design parameters through I²C interface on an external EEPROM
- ADC input to measure battery voltage or system voltage
- Embedded 32-bit Arm Cortex-M0 processor
- Internal overvoltage 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 x 8 ball array, 2.28mm x 3.38mm, 0.4mm pitch
Comparison
Applications
Design & Development
Boards & Kits
Wireless Power Receiver Solution for Low Power Applications
The P9222-R-EVK wireless power evaluation board demonstrates the features and performance of the P9222-R 5W wireless power receiver in low-power applications such as earbuds and hearing aids charging cases. The P9222-R-EVK can supply up to 5W power. IDT’s P9235A-RB-EVK Evaluation Board or any...
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Product Options
Applied Filters: