IDT WP3W-RK Manual

Features
Fully-functional wireless power receiver and transmitter for

plug-and-play prototyping
High efficiency transfer up to 79% at 5V/600mA

Three coil size options meet various application requirements

— 30 mm diameter for 3W applications
— 20 mm diameter for 2W applications
— 15 mm diameter for 1W applications
Low BOM cost and high density PCB design for ultra-compact

applications
Receiver (Rx) has 4-layer, performance-optimized PCB

reference layout for copying to system board
Transmitter (Tx) has 2-layer, performance-optimized PCB

reference layout for copying to system board
5.0V @ up to 0.6A output targets for wearable and many other

lower power applications
Only 2 high-voltage capacitors necessary for Rx

LED indicator to indicate power transfer on both Rx and Tx

boards
Break-away coil mount enables fast prototyping

Programmable output voltage from 4.5V to 6V

Over temperature protection and programmable over current

protection on Rx board
Selectable Tx input current limit capability for USB protection.

Programmable LED pattern on the Tx board

Supported by an extensive library of digital resources to ease

design-in effort
Application notes, datasheets, manuals, guides, videos, layout

files, and other digital resources can be found at:
www.IDT.com/WP3W-RK

Kit Contents

Fully-assembled P9027LP-R-EVK and P9235A-R-EVK

reference boards fitted with 2W coils
Two additional coil sets for 1W and 3W output power

1.5 ft. USB cable

© 2016 Integrated Device Technology, Inc
≤ 3W Wireless Power Receiver and
Transmitter Reference Kit
Description
IDT's wireless power reference kit targets applications ranging
from 0.5 to 3W. The reference kit is comprised of both the
transmitter (P9235A-R-EVK) and the receiver (P9027LP-R-EVK)
with three different coil size options supporting applications with
different form factors and power levels. The high-efficiency,
turnkey reference design is supported by comprehensive online,
digital resources to significantly ease design-in effort and enable
rapid prototyping.
The receiver design is based on the P9027LP-R, a highly
integrated, high efficiency solution suited to a wide range of
compact applications requiring up to 600mA load current. The
layout has been optimized on a 4-layer PCB, compliant with
wearable device layout rules and form factors. The ultra-compact
form factor is ideal for rapid product prototyping. The active area
of the P9027LP-R-EVK board is 5.7 mm x 5.7 mm and is ideal for
small form factor and thermally-constrained applications.
The transmitter design is based on the P9235A-R and can be
powered from a micro-USB or other input voltage from 4.5V to
5.5V. The P9235A-R is based on a flexible 32-bit ARM® Cortex®-
M0 processor with integrated full bridge power stage drivers and
on-chip simultaneous voltage and current demodulation. It
provides a low component count solution on an optimized 2-layer
hardware reference layout intended for seamless copy/paste to a
customer application board. The active area of the P9235A-R
board is 22.7mm x 21.2mm and is ideal for space-constrained,
low power transmitter designs.
Figure 1. Kit Photograph
1
WP3W-RK
Reference Kit Manual
May 16, 2016