System

Load

bq51222

OUT

SCL

AD

SDA

AC1

AC2

BOOT1

RECT

z

z

NTC

TS/CTRL

CLAMP1

COMM1

HOST

PGND

ILIM

FOD

TERM

BOOT2

COMM2

CLAMP2

TMEM

CM_ILIM

VO_REG

VIREG

RECT

LPRB1

LPRB2

AD-EN

Copyright © 2016, Texas Instruments Incorporated

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D001

PMA Duracell TX

WPC A1 TX

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of

development. Subject to change or discontinuance without notice.

bq51222

SLUSCL5 – JULY 2016

bq51222 Dual Mode 5-W (WPC v1.2 and PMA) Single Chip Wireless Power Receiver

1

1 Features

1

•

Robust 5-W Solution with 50% Lower Losses for

Improved Thermals

–

Inductorless Receiver for Lowest Height Profile

Solution

–

Adjustable Output Voltage (4.5 to 8 V) for Coil

and Thermal Optimization

–

Fully Synchronous Rectifier with 96%

Efficiency

–

97% Efficient Post Regulator

–

79% System Efficiency at 5 W

•

WPC v1.2 and PMA Compliant Communication

•

Patented Transmitter Pad Detect Function

Improves User Experience

•

2 Applications

•

Smart Phones, Tablets, and Headsets

•

Wi-Fi Hotspots

•

Power Banks

•

Other Handheld Devices

3 Description

The bq51222 device is a fully contained wireless

power receiver capable of operating in both the

Wireless Power Consortium (WPC) Qi and Power

Matters Alliance (PMA) protocols which allows a

wireless power system to work with both inductive

charging standards. The bq51222 device provides a

single device power conversion (rectification and

regulation)

as

well

as

the

digital

control

and

communication for both standards. It also has

autonomous detection of protocol and requires no

additional

active

devices.

The

bq51222

device

complies with the WPC v1.2 and PMA communication

protocol. Together with the WPC or a PMA primary-

side controller, the bq51222 device enables a

complete wireless power transfer system for a

wireless power supply solution. The receiver allows

for synchronous rectification, regulation and control

and communication to all exist in a market-leading

form factor, efficiency, and solution size.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (MAX)

bq51222

DSBGA (42)

3.586 mm × 2.874 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

SPACER

Simplified Schematic

Dual Mode Efficiency 5-V Out