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
- Wireless power solutions for mobile solutions
- Wireless earbud case charging
- Wearables and fitness trackers
- Mobile devices
- Hearing aids case charging
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| WLCSP | 40 | I | Yes | Reel | 1 |
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