Turnkey board for in-vehicle Qi wireless charging

Turnkey board for in-vehicle Qi wireless charging

New Products |
By Nick Flaherty

The CRB is designed to comply with the Wireless Power Consortium (WPC) Qi Baseline and Extended Power Profiles to 15W and iOS and Android proprietary fast charging modes, using IDT’s experience in the smartphone receiver market.

The reference board is based on the IDT P9261 AEC-Q100 chipset combined with the WPC qualified MP-A13 3-coil transmitter type for added placement forgiveness. Of chief importance to manufacturers, the CRB has been carefully designed to minimize system EMI and includes filtering to successfully pass CISPR-25 EMI requirements. The reference design is supported by an intuitive Graphical User Interface (GUI) that allows customers to tune parameters such as: Foreign Object Detection (FOD), protection limits and timing.

“IDT believes that the Automotive CRB will fuel the growth of in-car device wireless charging by providing equipment makers with a faster, painless, low-risk path to adoption,” said Laurence McGarry, marketing director of IDT’s Wireless Power Division. “In laboratory tests, we measure more than 5% improvement in efficiency compared to more complex competitive solutions while meeting the tough EMI specifications for automotive designs.”

The P9261 AEC-Q100 qualified transmitter IC uniquely combines high-voltage integration, including current sensing and MOSFET drivers, with a highly flexible M0 ARM® core-based solution to enable higher performance and smaller board space than competitive offerings. The P9261 is designed for multiple coils and supports charging of up to 15W. It comes in compact 7mm x 7mm 48-QFN and wettable flank packages (0.5 mm pitch). All the additional components on the CRD have been carefully selected as AEC-Q100 qualified to provide customers with selection choices. 

IDT’s automotive wireless charging P9261-C3-CRB development kits are available today. IDT is currently being acquired by Renesas Electronics 

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