what is a pd charger

A PD charger is a charger that supports the USB Power Delivery (USB PD) standard. USB PD is a charging technology that can be used on USB devices, allowing USB to quickly supply power and charge through the protocol on the chip. Compared to traditional USB charging technology, PD chargers can provide higher power output and faster charging speed. PD charging can deliver up to 240W of power, making it more powerful than its predecessors. PD chargers are bidirectional and guarantee that devices wont be overcharged. They are also highly compatible and can be used with smartphones, notebooks, tablet computers, televisions, and other devices. USB PD is a universal charging specification that allows you to sidestep the fragmented charger market altogether. The USB PD negotiation approach has voltage steps of 5 V, 9 V, 15 V, 20 V, and beyond that support power outputs ranging from as little as 0.5 W to 240 W by varying current.