≤ 3W Wireless Power Receiver and
Transmitter Reference Kit
WP3W-RK
Reference Kit Manual
© 2016 Integrated Device Technology, Inc
1
May 16, 2016
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
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
