Renesas Electronics Corp. has released a reference design for automotive wireless charging stations. The new P9261-3C-CRBv2 enables automotive manufacturers to deliver premium performance and safety features for in-cabin wireless charging. The reference design is certified to the Wireless Power Consortium (WPC) Qi 1.3 standard EPP (Extended Power Profile) for 15-W charging. It also supports proprietary charging profiles and is capable of 50-W power delivery.
Click for a larger image. (Source: Renesas Electronics Corp.)
The P9261-3C-CRBv2 reference design includes the automotive-qualified wireless power controller P9261 with the MP-A13 3-coils reference board as the wireless power transmitter (TX). It offers a large active charging area with high efficiency and is said to provide ‘exceptional’ EMC/EMI performance, meeting the CISPR-25 requirement. It also includes a Renesas RH850 automotive microcontroller as a host controller, which enables the system to provide functional safety features that comply with Automotive Safety Integrity Level B (ASIL B).
The P9261-3C-CRBv2 EVK can be controlled and monitored real-time by a graphical user interface (GUI), which enables easy programming changes and firmware updating. The GUI provides numerical readouts of key parameters, such as the selected coil, transmitter status, input voltage, buck output current, Tx power, and bridge voltage. The GUI also allows developers to tune customer-specific variables related to hardware design, such as settings for foreign object detection (FOD), said Renesas.
The automotive wireless charging reference design, which includes the P9261-3C-CRBv2 EVK evaluation kit is available now. Renesas also offers Automotive Winning Combinations that includes the P9261, along with power management IC, power, and microcontroller offerings from Renesas.
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