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-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 1.11 MB Oct 10, 2017
User Guides & Manuals
P9221-R Layout Guidelines Guide PDF 903 KB Dec 21, 2016
Application Notes & White Papers
Tuning Qi and AirFuel / PMA Inductive Resonance Circuits for Optimal Efficiency 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
PCN# : TB1711-03 Change of Cover Tape on Select Package Product Change Notice PDF 1.57 MB Dec 6, 2017
PCN# : WP1705-01(R1) Revised PCN notice on Firmware update Product Change Notice PDF 48 KB Jul 25, 2017
PCN# : WP1705-01 Firmware Update on P9221-R Product Change Notice PDF 50 KB May 30, 2017
The IDT Consumer Products Advantage Overview PDF 4.01 MB Jun 30, 2017
The IDT Automotive Advantage 日本語 Overview PDF 3.55 MB May 26, 2017
Wireless Power Reference Kits Overview Overview PDF 2.04 MB Feb 21, 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