With the increasing integration of automobiles and smartphones, there is a growing need for wireless charging technology that allows for easy charging in the car. Renesas offers an automotive in-cabin wireless power solution that is Qi® 1.3 compliant and supports functional safety. This solution uses the P9261-3C wireless power transmitter that can supply power to three coils, resulting in a system with a large chargeable area and high transmission efficiency.

System Benefits​:

  • Complies with the Wireless Power Consortium's (WPC) Qi 1.3 Extended Power Profile (EPP) (at 15W) specification and is capable of providing 30W fast charging Proprietary Power Delivery Extension (PPDE)
  • Supports WPC Qi 1.3 Rx-to-Tx authentication with safe power transfer
  • Supports functional safety up to ASIL B with an RH850 MCU and Renesas buck regulator
  • Wide charging area and highly efficient (up to 75%) wireless power transfer with support for up to 3-coil application
  • Meets CISPR25 Class 4 for superior EMI performance




  • Wireless charging of smartphones inside the vehicle (car, motorcycle, scooters, etc).

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AS209 AS209 AS209 AS209 DC/DC Buck DC/DC Buck DC/DC Buck CAN 1 CAN CAN NFC Coil NFC Coil NFC Coil Tx Coils Tx Coils Tx Coils Secure IC Secure IC Secure IC XTAL XTAL XTAL PMOS PMOS PMOS NFC NFC NFC Connector Arrow.326 Connector Arrow.145 Connector double arrow Connector double arrow.148 Connector Arrow.326.150 Connector Arrow.326.151 Connector Arrow.326.152 Connector double arrow.153 Connector Arrow.326.154 Connector double arrow.155 Battery.328 Sheet.112 Sheet.113 Sheet.114 Sheet.115 12V Battery 12V Battery 12V Battery Connector Line Connector Arrow.158 Connector Arrow.159 DC/DC DC/DC DC/DC MCU MCU MCU MCU CAN 2 CAN CAN VCC VCC VCC I2C I2C I2C Wireless Power Tx Wireless Power Tx Wireless Power Tx Wireless Power Tx GPIO GPIO GPIO
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