Power & Power Management

Overview

Description

The P9242-R3 is a highly-integrated 15W magnetic induction wireless power transmitter with in-band, bi-directional data communication requiring no additional circuitry. The communication channel can be used for proprietary device authentication and secure system data transfer.

The P9242-R3 includes a 32-bit ARM®  Cortex®-M0 processor, foreign object detection (FOD), wide input voltage range operation, full bridge drivers, and on-chip simultaneous voltage and current demodulation.

In addition, the P9242-R3 features programmable over-current protection, programmable LED output blinking pattern, and I²C serial interface protocol to read back information such as voltage, current, and fault conditions. This standard device is compliant to the WPC-1.2 specification. Combined with the P9221-R3 receiver, the P9242-R3 forms complete wireless power system solution for 15W applications with bi-directional data communication.

The P9242-R3 has the bootloader and application firmware pre-programmed into internal one-time programmable (OTP) memory.
The P9242-RB, which is pin compatible with the P9242-R3, has only the bootloader pre-programmed into OTP memory 
and uses external flash for the application firmware so that it can be changed for specific system requirements.

The P9242-R3 and P9242-RB are available in a lead-free, space-saving 48-VFQFN package. It is rated for -40ºC to +85ºC ambient operating temperature range.

Features

  • Supports bi-directional data communication 
  • Enables authentication and system data transfer
  • Up to 15W of power transfer
  • 87% end-to-end efficiency when combined with the P9221-R3
  • VIN range: 4.25V–21V
  • Integrated drivers for external power FET's
  • Integrated step-down switching regulator
  • Simultaneous voltage and current demodulation
  • Standard device compliant with WPC-1.2 specification
  • Supports I²C interface
  • -40°C to +85°C ambient operating temperature range
  • P9242-RB with an external flash supports firmware customization
  • 6 x 6 mm, 48-VFQFPN package

Documentation

Title Type Date
PDF1.28 MB
Datasheet
PDF3.74 MB
Application Note
PDF131 KB
Datasheet - Short-form
PDF1.14 MB
Overview
PDF728 KB
Product Change Notice
PDF983 KB
Product Change Notice
PDF1.15 MB
Product Change Notice
PDF627 KB
White Paper

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Videos & Training

IDT 15W Wireless Power Reference Kit w/ Bi-directional Communication

A brief overview of the WP15WBD-RK, a 15W WPC Qi-compatible wireless power reference kit featuring a bi-directional communication channel between the transmitter and receiver. The bi-directional data communication channel enables users to authenticate a wirelessly charged receiver device with a specific charging transmitter base or to transfer system data without any additional hardware.

For more information, visit www.IDT.com/WP15WBD-RK.