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Status

The basic code has been tested. We are working to order the first hardware prototype for testing. We are expecting to have the hardware wrap up in Dec 15th, 2024. Code release no long after that.

Working list:

  • Prototype evaluation
  • Complete driver library in C++
  • Hardware release

Specification

  • Power
    • Built in 5V @ 500mA switching power supply
    • Built in 3.3V @ 200mA LDO
    • Temperature reading build-in on circuit
    • USB-C current/voltage reading build-in on circuit
    • USB Type-C port (for power delivery and programming)
  • USB-C PD
    • Sink Controller AP33772S
    • Protocol support: Standard fixed profile, PPS, EPR, AVS up to 30V
  • Microcontroller
    • RP2040 flexible clock running up to 133 MHz
    • 264kB on-chip SRAM
    • 16MB on-board QSPI flash
  • LEDs
    • Green - User controllable - GPIO 25
  • Reset button
  • Boot button
  • Programming: Through USB-C or SWD

Change note from PicoPD non-Pro

  • Newer protocol IC AP33772S
  • Remove additional ESD protection for CC1/CC2
  • Additional power rail of 5V (when input voltage is higher than 6V)

Terminology

For USB Power Delivery 3.1, there is more possible profile in compare to its older version (PD3.0)

(to be update)

Testing Result

With Framework USB-C 180W charger, we were able to request with AP33772 eval board:

  • All standard fixed profile: 5V, 9V, 15V, 20V
  • EPR up to 28V
  • AVS from 15V to 28V

Actual performance test will be done when board arrive.

(to be update)