1 Features

1• Integrated Wireless Power Supply Receiver

Solution With a 7-V Regulated Supply

– 93% Overall Peak AC-DC Efficiency

– Full Synchronous Rectifier

– WPC v1.1 Compliant Communication Control

– Output Voltage Conditioning

– Only IC Required Between RX Coil and 7-V

Output

• WPC v1.1 Compliant (FOD Enabled) Highly

Accurate Current Sense

• Dynamic Rectifier Control for Improved Load

Transient Response

• Dynamic Efficiency Scaling for Optimized

Performance Over Wide Range of Output Power

• Adaptive Communication Limit for Robust

Communication

• Supports 20-V Maximum Input

• Low-power Dissipative Rectifier Overvoltage

Clamp (VOVP = 15 V)

• Thermal Shutdown

• Multifunction NTC and Control Pin for

Temperature Monitoring, Charge Complete and

Fault Host Control

2 Applications

• WPC v1.1 Compliant Receivers

• Cell Phones and Smart Phones

• Headsets

• Digital Cameras

• Portable Media Players

• Hand-Held Devices

3 Description

The bq51010B is a family of advanced, flexible,

secondary-side devices for wireless power transfer in

portable applications. The bq51010B devices provide

the AC-DC power conversion and regulation while

integrating the digital control required to comply with

the Qi v1.1 communication protocol. Together with

the bq50xxx primary-side controller, the bq51010B

enables a complete contact-less power transfer

system for a wireless power supply solution. Global

feedback is established from the secondary to the

primary to control the power transfer process using

the Qi v1.1 protocol.

The bq51010B devices integrate a low resistance

synchronous rectifier, low-dropout regulator, digital

control, and accurate voltage and current loops to

ensure high efficiency and low power dissipation.

The bq51010B also includes a digital controller that

can calculate the amount of power received by the

mobile device within the limits set by the WPC v1.1

standard. The controller will then communicate this

information to the transmitter to allow the transmitter

to determine if a foreign object is present within the

magnetic interface and introduces a higher level of

safety within magnetic field. This Foreign Object

Detection (FOD) method is part of the requirements

under the WPC v1.1 specification.