Although the USB Type-C, PD and USB3.1 been talked about for so long, there are few articles can really make it clear about what’s it, what is the difference and what is the link.
Here are 3 FAQs that to answer your questions about USB Type-C, Power Deliver, USB 3.1 Gen1 / Gen2.
Q: What is the difference between USB Power Delivery and USB Type-C ?
A:USB-Power Delivery (USB PD) is a protocol specification that supports up to 100W of power transmission and data communication in a single cable. USB Type-C is a new plug-in USB connector specification that supports USB 3.1 (Gen1 and Gen2), Display Port and USB PD and a series of new standards. USB Type-C ports support up to 5V3A by default. , The USB type-c can support the 100W power (5V20A) if a USB PD is implemented in a USB Type-C port. Therefore, having a USB Type-C port does not mean that it supports USB PD.
Q:What is DFP, DRP, and UFP?
A:DFP is a USB Type-C port on a host or hub that is connected to the device
UFP is a USB Type-C port on a device or hub that is connected to the host or hub’s DFP
DRP is a USB Type-C port that works either as a DFP or UFP
Note: The above DRP is different from USB-PD DRP. USB-PD DRP refers to the power port as Power Source and Sink. For example, a USB Type-C port on a laptop supports USB-PD DRP, which can be used as either a Power Source (when connecting a USB stick or a mobile phone) or as a sink (when connecting a monitor or power adapter)
Q：Is USB Type-C mandatory for USB3.1 Gen1 or Gen2 specifications? USB Type-C Equivalent to USB3.0 / 3.1?
A：No. The USB Type-C specification is independent of the USB3.1 Gen1 and Gen2 specifications. We can use the traditional TypeA and TypeB interfaces to support Gen1 or Gen2. The USB Type-C specification is a new specification developed by USB-IF that supports up to 100W of power transmission and positive and negative insertion. The USB Type-C connector can be designed either as Gen1 or Gen2.