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I am transitioning my system from an older USB connector to the USB Type-C connector. However I do not know whether I need a one of TI's Power Delivery (PD) controller or a CC controllers. When should I chose a PD controller or CC controller and what are some advantages to using one over the other?
Implementing USB Type-C can help to increase the USB ports functionally and create a more friendly experience for the end user. To implement USB Type-C one of two devices is generally always required, either a PD controller or CC controller. PD (Power Delivery) controllers allow all features of USB Type-C to be implemented. PD controllers can be used in all applications using USB Type-C and can come with a power switch integrated into the package. CC controllers allow for the main features of USB Type-C to be implemented but leave out features that require PD messages over the USB Type-C connector. CC controllers are generally used in application that require a small solution size, low power consumption and simple bring up. The table below shows a list of commonly used USB Type-C features and whether a PD controller or CC controller can be used to implement them.
USB Type-C Feature
PD Controller
CC Controller
Comments
Supports DFP, UFP, DRP Port Configurations
x
Supports Up To 100W Charging Advertisement
Supports Up To 15W Charging Advertisement
Supports Video Alternate Modes
Supports Debug Alternate Modes And Audio Accessories
Vconn Support
Power Role Swap
Data Role Swap