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P9028AC Typical Application Circuit Diagram
P9028AC Pinout


Ultra-compact Dual-mode Wireless Power Receiver IC

The P9028AC is an integrated single-chip, dual-mode WPC v1.1-compliant and PMA-compatible, wireless power receiver IC with advanced WPC v1.1 Foreign Object Detection (FOD). The device operates with an AC power signal from a resonant tank and converts it into a regulated 5V output voltage, which can be used to supply power to a mobile application. It includes a high efficiency Synchronous Full Bridge Rectifier and 5V tracking LDO output stage. The P9028AC is used in automatic dual mode with either WPC AC or PMA DC modulation connections for improved efficiency.

The device includes the control circuit required to modulate the load to transmit WPC-compliant or PMA-compatible message packets to the base station. It uses minimal external components to reduce overall solution area.  The P9028AC employs advanced programmable WPC FOD techniques to detect foreign metallic objects placed on the transmitter base station derived from a transmitted and received power transfer algorithm.

NOTICE: This device is restricted to high volume and strategic applications only. For most customers, consider using our general market devices found at


  • Dual-mode: WPC 1.1  compliant and PMA compatible
  • Single Chip Receiver (Rx) Solution
  • Advanced WPC V1.1 Foreign Object Detection (FOD)
  • Programmable FOD setting via external resistor and I2C registers
  • Programmable current limit via external resistor
  • Integrated full-bridge synchronous rectifier
  • Integrated 5V @ 1A tracking LDO regulator output
  • Closed-loop power transfer control between TX and RX
  • I2C interface provides Vrect, Iout and switching frequency values
  • Open-Drain LED Indicator Output
  • Temperature monitoring through external NTC thermistor
  • Over-Temperature/Voltage/Current Protection

Product Specification

FunctionWireless Power StandardOutput Current Max (A)Output Voltage (V)Output Power Max (W)Lead Count (#)Pkg. Type
Power ReceiverWPC 1.1 and PMA (Dual-mode)15532, 36VFQFPN, WLCSP

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
P9028AC-0AWGIActiveAWG36WLCSP36IYesCUTRCheck Availability
P9028AC-0AWGI8ActiveAWG36WLCSP36IYesReelCheck Availability
P9028AC-0NBGIActiveNBG32P1VFQFPN32IYesTrayCheck Availability
P9028AC-0NBGI8ActiveNBG32P1VFQFPN32IYesReelCheck Availability