USB Type-C™ and USB PD controller power switch and high-speed multiplexer

The TPS65982 device is a

stand-alone USB Type-C and Power Delivery (PD) controller providing cable-plug and

orientation detection at the USB Type-C connector. Upon cable detection, the TPS65982 device communicates on the CC wire using the USB PD

protocol. After successful USB PD negotiation is complete, the TPS65982 enables the appropriate power path and configures

alternate mode settings for internal and (optional) external multiplexers.

The mixed-signal front end on the CC pins

advertises default, 1.5 A or 3 A for USB Type-C power sources, detects a plug event

and determines the Type-C cable orientation, and autonomously negotiates USB PD

contracts using a Bi-phase Marked Coding (BMC) and the Physical Layer (PHY)

protocol.

The port power switch provides up to 3 A

downstream at 5 V for legacy and Type-C USB power. An additional bidirectional switch path

provides USB PD power up to 3 A at a maximum of 20 V as either a source (host), sink

(device), or source-sink.

The TPS65982 is also

an upstream-facing port (UFP), downstream-facing port (DFP), or dual-role port for data. The

port data multiplexer passes data to or from the top or bottom D+/D– signal pair at the port

for USB 2.0 HS; additionally, the Sideband-Use (SBU) signal pair is used for Alternate

Modes. The power management circuitry supports dead battery or no-battery operation using

VBUS as a primary power supply when 3.3 V is not available.