DRAFT

Dual-Mode WPC/PMA 5 Watt

Wireless Power Receiver IC

P9028AC Product Datasheet

Revision 1.0.3 1

Features

 Single Chip Receiver (Rx) Solution

 WPC v1.1.2 Compliant

 PMA v1, v3 Pre-Release Compatible with Options

 Advanced WPC v1.1.2 Foreign Object Detection (FOD)

 Programmable FOD setting via external resistor and

C registers

 Programmable current limit via external resistor

 Integrated Full-Bridge Synchronous Rectifier

 Integrated 5V @ 1A LDO Regulator Output

 Closed-loop power transfer control between TX and

 I

C interface provides VRECT, Iout and switching

frequency values

 Open-Drain LED Indicator Output

 Over-Temperature/Voltage/Current Protection

Applications

 WPC-Compliant and PMA-Compatible Wireless

Chargers for Mobile Applications.

 Cellular Mobile Phones

 Tablets, DSC, DVC and Handhelds

Introduction

The P9028AC is an integrated single-chip, dual-mode WPC

v1.1.2-compliant and PMA v1.0-compatible, wireless power

receiver IC with advanced WPC v1.1.2 Foreign Object

Detection (FOD). The device operates with an AC power

signal from a resonant tank and converts it into a regulated

5V output voltage, which can be used to supply power to a

mobile application. It includes a high efficiency Synchronous

Full Bridge Rectifier and 5V tracking LDO output stage. The

P9028AC dual-mode operation automatically detects the

transmitter type and initiates either WPC or PMA AC

modulation communication protocols with optimal efficiency.

The device includes the control circuit required to modulate

the load to transmit WPC-compliant or PMA-compatible

message packets to the base station. It uses minimal

external components to reduce overall solution area.

The P9028AC employs advanced programmable WPC FOD

techniques to detect foreign metallic objects placed on the

transmitter base station derived from a transmitted and

received power transfer algorithm.

The P9028AC is available in a 36 ball 3mm X 3mm WLCSP

or 32 pin 5mm X 5mm TQFN package.

Typical Application Circuit

Packages: WLCSP-36 6x6 balls (3.06mm x 2.9mm) (See page 33)

TQFN-32 5x5mm (See page 35)

Ordering information: (See page 38)