The USB Power Delivery (PD) Specification — everything you need to know about USB-PD

USB Power Delivery (PD) is a fast-charging standard that allows devices to negotiate power requirements over a USB connection. The evolution of USB PD from 1.0 to 3.1 has introduced features like smart power negotiation, programmable power supply, and extended power range, enabling efficient charging and supporting higher power outputs up to 240W. USB-C has become the dominant interface for USB PD, offering a convenient and versatile power solution for a wide range of devices. The latest USB PD 3.1 standard includes Extended Power Range (EPR) and Adjustable Voltage Supply (AVS), catering to high-power devices like gaming laptops and workstations. The ongoing advancements in USB PD aim to streamline power delivery and address diverse charging needs across various devices.