Icon
Icon

USB PD over USB-C

USB Power Delivery

USB Power Delivery is a groundbreaking technology that harnesses the USB-C interface to deliver significantly higher levels of power than conventional USB bus power. Before the advent of USB-C, USB cables were limited to fixed maximum bus power delivery from the host to the device: USB 2.0 at 5V/0.5A and USB 3.0 at 5V/0.9A.


Enabled by the USB-C interface, the USB PD standard facilitates power profile negotiation between USB-C ports on hosts and devices. This negotiation ensures the safe transfer of power between USB-C ports, accommodating various voltage and current profiles, with a maximum power delivery of up to 240W at 48V/5A.

USB C to Legacy USB Connector Cable
e.g. USB A to C, USB B to C, USB Micro B to C cables
Voltage Profile Max. Current Typical Charging Device
5 V 0.9 A USB 3.0 devices
USB C to C Cable
Default power at max 3A. E-marker IC is required to negotiate 5A current and voltage profiles higher than 20V according to USB PD 3.1
Voltage Profile Max. Current Typical Charging Device
5 V 3 A Web camera, external SSD
9 V 3 - 5 A Phone, studio camera, drone
15 V 3 – 5 A Tablet, Chromebook
20 V 3 – 5 A Portable monitor, laptop
28 V 5 A Extended Power Range (EPR) devices: monitor, powerful laptop
36 V 5 A
48 V 5 A

USB-C PD to Reduce E-waste:

A growing number of regions and states, including the European Union and California, have enacted mandates to ensure that small electronics such as smartphones and laptops adopt the USB-C port and USB PD as the common charging method. This move aims to reduce electronic waste generated by obsolete chargers in the coming years. USB PD over Type-C is anticipated to be widely embraced by the small electronics industry.

2024 © Newnex Technology Corp. All Rights Reserved. Privacy Policy