USB PD 3.0 provides a number of key enhancements over the current version of the spec, USB PD 2.0, to enhance robustness in power sources, sinks and cables. Cypress’s EZ-PD CCG3 and CCG4 USB-C port controllers are claimed as the first solutions to support the USB PD 3.0 specification from the USB Implementers Forum (USB-IF).
USB PD 3.0 provides the ability for an accessory to change modes from sourcing to sinking power quickly, preventing data corruption during a sudden disconnect of its power source. This feature, called fast role swap, enables ‘charge-through’ dongles and docks. USB PD 3.0 also introduces an extended messaging capability that enables faster USB PD performance for firmware updates and offers a more-efficient mechanism to exchange security certificates. The extended messages can carry data payloads of up to 260 Bytes, more than nine times the 28 Bytes allowed in USB PD 2.0. USB PD 3.0 is fully backward-compatible with USB PD 2.0.
Cypress’s portfolio of programmable USB-C controllers with PD 3.0 support includes EZ-PD CCG3, the most-integrated USB-C solution with authentication, and CCG4, the first two-port USB-C solution. The EZ-USB HX3C, the first USB-C PD hub controller, and EZ-PD CCG2, the smallest programmable USB-C solution, will add PD 3.0 support via a firmware upgrade later in 2016.
Cypress adds that the USB Type-C standard is gaining rapid support...[continues]