5 Description (continued)
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.
TPS65982
SLVSD02E – MARCH 2015 – REVISED AUGUST 2021
www.ti.com
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