20

30

40

50

60

70

80

0

1

2

3

4

5

Output Power (W)

G000

Power

Stage

AC-DC

BQ500410 A

Feedback

Transmitter

Receiver

Rectification

Voltage

Conditioning

Load

Controller

bq51k

Communication

Power

bq500410A

www.ti.com

SLUSB96 – NOVEMBER 2012

Free Positioning, Qi Compliant Wireless Power Transmitter Manager

Check for Samples: bq500410A

1

FEATURES

DESCRIPTION

The bq500410A is a free-positioning digital wireless

•

Expanded Free Positioning Using Three Coil

power controller that integrates all functions required

Transmit Array

to control wireless power transfer to a WPC compliant

•

Intelligent Control of Wireless Power Transfer

receiver. It is WPC 1.1 ready and designed for 12-V

•

Conforms to Wireless Power Consortium

systems but applicable to other supply voltages. The

bq500410A pings the surrounding environment for

(WPC) A6 Transmitter Specification

WPC compliant devices to be powered, safely

•

Digital Demodulation Reduces Components

engages the device, reads the packet feedback from

•

WPC1.1 Ready, Including Foreign Object

the

powered

device,

and

manages

the

power

Detection (FOD)

transfer. A charging area of at least 70 mm x 20 mm

provides flexible receiver placement on a transmitter

•

Enhanced Parasitic Metal Detection (PMOD)

pad. The bq500410A supports both Parasitic Metal

Assures Safety

Detection (PMOD) and Foreign Object Detection

•

Over-Current Protection

(FOD) by continuously monitoring the efficiency of the

•

LED Indication of Charging State and Fault

established power transfer, protecting from power lost

Status

due to metal objects misplaced in the wireless power

transfer path. Should any abnormal condition develop

during power transfer, the bq500410A handles it and

APPLICATIONS

provides

fault

indicator

outputs.

Comprehensive

•

WPC 1.1 Ready Wireless Chargers for:

protection features provide a robust design to protect

–

Smart Phones and other Handhelds

the system in all receiver placements.

–

Hermetically Sealed Devices and Tools

The bq500410A is available in an area saving 48-pin,

–

Cars and Other Vehicles

7 mm x 7 mm QFN package and operates over a

temperature range from –40°C to 110°C.

–

Tabletop Charge Surfaces

•

See www.ti.com/wirelesspower for More

Information on TI's Wireless Charging

Solutions

Functional Diagram and Efficiency Versus System Output Current

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.