Back in stock on Dec 30th, 2024.

Purchase from EU: Lectronz

Shipment will come with headers. To enable Serial Debug, also consider purchasing Fast Charge Injection Adapter. For order more than 3 units, the adapter is provided free-of-charge

Links:

• AP33772S_CPP Library
• PicoPD Pro GitHub

Introduction

PicoPD Pro will help you negotiate the voltage from your USB PD wall plug/power bank while still retaining the full functionality of RP2040 up to 30V. The board support the latest (2024) power delivery standard that will future proof your project. It will be a good candidate to USB-C PD your motor control board, controllable power supply, LED driver, custom battery charger, and more! Beside, you will have an additional 5V rail output.

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
• PPS: 100mV increment, 250mA increment
• AVS: 200mV increment, 250mA increment
• Current up to 5A continuous

Microcontroller

• RP2040 running at 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

*One direction: There can be current flow from VBUS back to source when switch is off due to PMOS body diode.

**Both direction: Complete switch, no current flow in both direction when switch is off

***Test at room temperature (20C) 5A load, measured at the VBUS switch after 30mins. Temperature is lower in other part of the board.

Terminology

For USB Power Delivery 3.1, there is more possible profile in compare to its older version (PD3.0). You can read What is PPS and AVS for USB-C power banks and chargers? for a better explaination.

PDO: Power Data Object. Which mean "one" profile of the charger. PDO can mean standard fixed voltage, extended fixed voltage, PPS, or AVS voltages.

Fixed: This mean any stable voltage like 5V, 9V, 12V, 15V ....28V, 36V, and 48V.

PPS: Programable Power Supply. In this mode, the charger can support voltage starting at 3.3V up to 20V. This mode support fine tune of voltage in 20mV increment as well as current limit starting at 1A with 50mA increment.

EPR: Extended Power Range. This mode mean that the charger support voltage higher than 20V.

AVS: Adjustable Voltage Supply. This mode exist when charger support EPR mode. The start voltage for AVS is 15V and up to the specification of the charger.

Source: Texas Instrument, BATTERY MANAGEMENT SYSTEMS SEMINAR