Overview

The P9235A is a 5W, 21V guided positioning magnetic induction wireless power transmitter product supporting WPC’s A5/A11 coil configurations. The system-on-chip integrates a power controller, microcontroller, 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 4.25V to 21V while consuming 1mA of current in the standby mode.

The transmitter includes an industry-leading 32-bit Arm® Cortex®-M0 processor offering a high level of programmability while consuming ultra-low standby power meeting the Energy Star requirement. In addition, the microcontroller empowers users to customize features such as LED patterns, buzzer, and FOD threshold settings. The device supports an I2C serial interface. The P9235 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 °C to +85 °C.

NOTICE: This device is restricted to high-volume and strategic applications only.

P9235A - Application Circuit
P9235A - Application Circuit
  • VIN range: 4.25V to 21V
  • WPC 1.1 compliant for A5/A11 type coils
  • 80% peak efficiency
  • Proprietary slew rate control eliminating EMI filter
  • Simultaneous voltage and current demodulation
  • Integrated 32-bit Arm Cortex-M0 processor
  • Supports I2C interface
  • Optional proprietary back-channel communication
  • -40 °C to +85 °C temperature range
  • Available in a 5mm x 5mm 40-lead VFQFPN package

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    Part Number
    P9235A-0NDGI
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 40 I Yes Tray
    P9235A-0NDGI8
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 40 I Yes Reel
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