TPS65981ABTRTQR

USB Type-C™ 和 USB PD 控制器、电源开关和高速多路复用器 56-QFN -40 to 105

The TPS65981 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 TPS65981 device communicates on the CC wire using the USB PD protocol. When cable detection and USB PD negotiation are complete, the TPS65981 device 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 provides default 900 mA, 1.5-A, or 3-A current for Type-C power sources, detects a plug event, determines the USB Type-C cable orientation, and autonomously negotiates USB PD contracts by adhering to the specified biphase-marked coding BMC and 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 TPS65981 device 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 and has a USB 2.0 low-speed endpoint. Additionally, the sideband-use SBU signal pair is used for auxiliary or alternate modes of communication DisplayPort, for example.

The power-management circuitry uses 3.3 V inside the system and also uses VBUS to start up and negotiate power for a dead-battery or no-battery condition.