2025/06/17

• Input/Output (IO) Connectors

USB Power Delivery

The USB Type-C® connector not only unifies the shape but also offers flexibility to support a variety of communication standards. In addition, power delivery is one USB function that you should remember. This power delivery function evolved into a standard dedicated to power delivery as the USB standard was revised. This article introduces the USB Power Delivery standard.

*USB4® and USB Type-C® are trademarks of the USB Implementers Forum, Inc. (USB-IF).
*USB-IF is a non-profit corporation founded by the group of companies that developed the Universal Serial Bus specification.

What USB Power Delivery ？

These are the standards established by the USB Implementers Forum (USB-IF). Not only will power supply exceeding the 7.5W (5V/1.5A) supported by USB BC 1.2 (Battery Charging Specification Revision 1.2) become possible using USB Type-C connectors and cables, the cables and connectors will also be used to sync with hosts, exchange host and device roles, and negotiate transmission of non-USB protocols. (Alternate Mode)Before the advent of the USB PD specification, voltage was restricted to 5V when delivering power using USB ports. With the USB PD standard, higher levels of power delivery have become possible by expanding the voltage range, and with the new EPR standard, that voltage range has been expanded further. With USB PD R3.1 (EPR), maximum power has increased from 100W (20V/5A) to 240W (48V/5A).

The following table shows the list of power supply requirements defined in the USB standard.

USB Type-C ® Series Product Variations

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Subject to change without notice. Errors and omission excepted.