USB-C Power Delivery – Beyondlogic

Adding a TCPC to Zephyr for USB Power Delivery

July 28, 2025 Craig Peacock 1

The Zephyr RTOS has support for USB-C Power Delivery through the software port of the Google ChromeOS Type-C Port Manager. USB Power Delivery is a protocol used on USB Type-C connectors to negotiate power at different voltage levels – typically 5V, 9V, 12V, 15V, 20V, but can be as high as 48V/240W with the new PD revision 3.1. As USB-C becomes the universal standard for low power chargers, it allows different devices such as phones, laptops, LCD screens, mini PCs, lights, label printers, bike lights etc to use a common charger, reducing e-waste and end-user confusion of what plug pack …

Review: USB-PD 65W Fast Charging Module (XPM52C)

July 10, 2025 Craig Peacock 3

This USB-PD (Power Delivery) Charging module is based on the XPM52C 65W USB-PD Multi-protocol Buck Converter. It allows USB devices (mobile phones, tablets, laptop computers, cameras etc) to be efficiently charged from a low voltage DC power source (8 to 30V DC) such as 12V/24V battery or power station. While my interest was in the USB-C power delivery capability, the device supports a range of legacy fast-charging protocols: This module is available from your usual cheap electronics sources such as AliExpress, Amazon, and Banggood. As the vendors normally don’t list the main part in their descriptions, search for “PD 65W …

Review: USB-C Power Delivery Trigger Board (CH224)

June 30, 2025 Craig Peacock 0

Depending upon their capability, USB-C PD adapters and chargers can source a variety of different voltages and currents. This is typically 5V, 9V, 12V, 15V and 20V up to 100W (for PD version 3.0). The adapter will initially provide either 5V (to support legacy protocols) or no voltage at all (if USB-C PD only). To obtain 5V or a higher voltage, the sink device needs to request this. For USB Power Delivery, the mechanism is that the source (adapter) will advertise its capabilities through a series of PDO or power delivery objects and the sink will request the desired voltage …

Primer: The USB-C Connector

July 16, 2020 Craig Peacock 0

Anyone who has used a USB Type-A plug will know the fact that it takes three attempts to successfully insert. The USB Type-C connector sets out to solve this life’s little annoyance. But it doesn’t just stop there, it also offers many other advantages: Power Delivery USB has already established itself as an industry standard for low voltage (5V Type A) power and charging. Today everything from mobile phones, portable speakers to bike lights have a USB port for charging. USB ports can now be found integrated into power points, in cars, at bus shelters and even on trains. It …