WPC 1.2.2 Compliant, Wireless Charging Receiver for 15W Applications

The P9221-R is a highly-integrated, Qi-compliant wireless power receiver targeted for 15W applications. Using magnetic inductive charging technology, the receiver converts an AC power signal from a resonant tank into a regulated 9V or 12V DC output voltage. The integrated, low-RDS(ON) synchronous rectifier and ultra-low-dropout regulator offer high-efficiency, making the product ideal for battery-operated applications.

The receiver includes a 32-bit ARM Cortex®-M0 processor offering a high level of programmability. The device outputs proprietary alignment guide information for optimum coupling between the receiver and the transmitter, and features a programmable current limit. The innovative over-voltage protection scheme eliminates the need for additional capacitors generally required by other receivers, minimizing the external component count and cost. Together with the P9242-R transmitter, the P9221-R is a complete wireless power system solution for 15W applications. The P9221-R is available in a space-saving 2.64 × 3.94 mm 52-WLCSP package. It is rated for the -40°C to 85°C ambient operating temperature range.


  • Single-chip, 15W, wireless power receiver
  • WPC 1.2.2 compliant
  • Full synchronous rectifier with low resistance switches
  • Embedded 32bit ARM® Cortex®-M0 processor
  • Proprietory overvoltage protection eliminating external capacitors
  • Low standby and operating mode power consumption
  • Programmable current limit
  • Supports I2C interface

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
P9221-RAHGI Active AHG52 WLCSP 52 I Yes Cut Tape Availability
P9221-RAHGI8 Active AHG52 WLCSP 52 I Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
P9221-R Datasheet - Datasheet PDF 1.37 MB Apr 4, 2017
User Guides & Manuals
P9221-R Layout Guidelines - Guide PDF 903 KB Dec 21, 2016
Application Notes & White Papers
P92xx White Paper-Tuning Qi and AirFuel/PMA Inductive Resonance Circuits - White Paper PDF 541 KB May 10, 2017
IDT WLCSP Implementation Guidelines - Application Note PDF 503 KB Apr 29, 2016
AN-816 IDT Wireless Power Transmission Resonance LC Calculations - Application Note PDF 284 KB Jan 16, 2014
Wireless Power Reference Kits Overview - Overview PDF 2.04 MB Feb 21, 2017
The IDT Consumer Products Advantage - Overview PDF 6.67 MB Jan 27, 2017
The IDT Automotive Advantage - Overview PDF 5.67 MB Jan 18, 2017
P9221-R and P9242-R Wireless Power Reference Kits for 15W Applications - Product Brief PDF 253 KB Dec 14, 2016
P9221-R Wireless Power Receiver for 15W Applications - Product Brief PDF 291 KB Oct 9, 2016

Evaluation Boards

Part Number Title Sort ascending
P9242-R-EVK Wireless Power Transmitter Reference Solution
P9221-R-EVK Wireless Power Receiver Reference Solution