Automotive WPC 1.2 compatible fully integrated wireless power receiver IC

The BQ51013B-Q1 device is a

single-chip, advanced, flexible, secondary-side device for wireless power transfer

in portable applications capable of providing up to 5 W. The BQ51013B-Q1 devices

provide the receiver (RX) AC-to-DC power conversion and regulation while integrating

the digital control required to comply with the Wireless Power Consortium (WPC) Qi

v1.2 communication protocol. Together with the BQ50012A primary-side controller (or

other Qi transmitter), the BQ51013B-Q1 enables a complete contactless 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 v1.2

protocol.

The BQ51013B-Q1 integrates a

low-resistance synchronous rectifier, low-dropout regulator (LDO), digital control,

and accurate voltage and current loops to ensure high efficiency and low power

dissipation.

The BQ51013B-Q1 also includes a

digital controller that calculates the amount of power received by the mobile device

within the limits set by the WPC v1.2 standard. The controller then communicates

this information to the transmitter (TX) to allow the TX 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 v1.2 specification.