The P9261 is a highly integrated, magnetic induction wireless power transmitter controller supporting the WPC Qi specifications or proprietary applications. The P9261 functions with multiple coils in a full-bridge or half bridge inverter configuration.

The P9261, which includes an industry-leading 32-bit ARM® Cortex®-M0 processor, offers a high level of programmability and extremely low standby power consumption. The transmitter generates power through the power coil, detects the presence of a wireless power receiver, decodes the communication packets from the receiver, and adjusts the transmitted power by controlling the voltage based on feedback from the receiver. The transmitter will enable the power receiver to output 15W if the bidirectional communication protocol can be established, or the power receiver will output only 5W for a standard 5W power receiver.

The transmitter detects if a foreign metal object is placed on the transmitter coil. To safeguard the device and the system under fault conditions, the P9261 includes input under-voltage, input overvoltage, output short-circuit, and over-temperature protection.

The microcontroller empowers the user to customize features such as LED patterns, foreign object detection (FOD) threshold settings, or the over-temperature threshold. The device supports the I2C serial interface protocol, which enables the user to control the basic parameters, such as operating mode, switching frequency, input current, and input voltage.

The P9261 is available in a lead-free, space-saving 7 × 7 mm, 48-QFN wettable flank RoHS-compliant package. The product is rated over the operating temperature range of -40ºC to +105ºC.


  • AEC-Q100, grade 2 qualified for automotive applications
  • EMI/EMC performance meets the CISPR-25 specification
  • Supports up to 15W wireless power receivers
  • Wide input voltage range: 4.25V to 21V
  • Fixed frequency and duty cycle wireless power topology
  • WPC 1.2.4 compliant and will support future WPC compatibility; supports multi-coil configurations
  • Embedded 32-bit ARM® Cortex®-M0 processor (trademark of ARM, Ltd.)
  • OTP program memory; also supports external flash memory
  • Supports I2C and SPI interfaces
  • Integrated drivers for external power FETs and current voltage sensing
  • Low standby power
  • Integrated step-down switching regulator for internal blocks to increase overall efficiency
  • Advanced foreign objects detection (FOD) and Q-factor function
  • Supports LEDs for status indication and alignment aid
  • Over-current, over-voltage, and over-temperature protection
  • Dedicated remote temperature sensing

tuneProduct Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Carrier Type Buy Sample
Last Time Buy VFQFPN 48 2 Tray
Last Time Buy VFQFPN 48 2 Reel
Active VFQFPN 48 2 Tray
Active VFQFPN 48 2 Reel


Title language Type Format File Size Date
Datasheets & Errata
star P9260-61 Short-Form Datasheet Datasheet - Short-form PDF 187 KB
P9260-61 Datasheet Datasheet PDF 2.39 MB
Application Notes & White Papers
AN-1015 P9261 CRB Q-Factor Tuning and Open FOD Thresholds Programming Guide Application Note PDF 731 KB
AN-1016 P9261 CRB Power-Loss and FOD Tuning Guide Application Note PDF 692 KB
AN-990 P9260-61 Layout Guidelines Application Note PDF 3.23 MB
Tuning Qi and AirFuel / PMA Inductive Resonance Circuits for Optimal Efficiency White Paper PDF 627 KB
PLC# : 210007 End-of-Life (EOL) Process on Select Part Numbers Product Life Cycle Notice PDF 160 KB
Wireless Power Products Overview Overview PDF 1.14 MB


Title language Type Format File Size Date
P9261-3C-CRB Software Tool Software Tool ZIP 981 KB
P926x CRB Power-Loss and FOD Thresholds Calculator Tool Software Tool XLSX 38 KB

memoryBoards & Kits

Part Number Title Type Company
P9261-3C-CRB Automotive 15W Wireless Charging Transmitter Customer Reference Board Reference Renesas