21V, Guided Positioning, A5/A11 Wireless Power Transmitter

Topology: Buck
Input Voltage (min.): 4.25 V
Input Voltage (max.): 21.00 V
Output 1: 5.10 V / 0.050 A

Original publication on 2016-02-10, revision 1.0.1


The IDTP9235 is a new 5W, magnetic induction wireless power transmitter product supporting WPC’s A5/A11 coil configurations. The system-on-chip integrates powercontroller, micro-controller, voltage regulation, foreign object detection (FOD), full bridge power stage drivers and on-chip simultaneous voltage and current demodulation.The product is designed to withstand a wide input voltage range of 4.25 to 21V while consuming 1mA of current in the standby mode.The transmitter includes industry-leading 32bit ARM® Cortex®-M0 processor offering high level of programmability while consuming supper low standby power meeting the energy star requirement. In addition, the new μController empowers the users to customizefeatures such as LED patterns, buzzer and FOD threshold settings. The device supports the I2C serial interface protocol. The product offers input under-voltage, input overvoltage, output short circuit and over-temperatureprotection to safeguard the device and system under fault conditions.The IDTP9235 is available in a Pb-free, space-saving QFN 5mm X 5mm, 40 pin package. The product is rated over an operating temperature range of -40 to +85ºC.


  • VIN range: 4.25 – 21 Volts
  • WPC-1.1.2 compliant
  • Up to 7W of power transfer
  • 82% peak efficiency
  • Integrated power stage drivers
  • Low standby power
  • Best in class EMI
  • Simultaneous Voltage & Current demodulation
  • Integrated 32bit ARM® Cortex®-M0 Processor
  • Supports I2C interface
  • Over-current & over-temperature protection
  • Optional Proprietary Back-Channel Communication
  • 40 to +85ºC temperature range
  • Available in QFN5X5-40 package


  Order Code SPEC Product series Compliance Bauform L
RDC max.
Q Samples
760308111 PDF WE-WPCC Wireless Power Transfer Transmitter Coil Qi - A11; MP-A11 53 x 53 x 6 mm 6.3 200 13 25 20 80