The TPS2388 is an 8-channel power source equipment (PSE) controller engineered to insert
power onto Ethernet cable according to IEEE 802.3at-2012 standard (or 802.3at). The PSE controller
can detect powered devices (PDs) that have a valid signature, determine the power requirements
according to the classification, and apply power through either one (Type -1) or two-event (Type-2)
physical classification. The TPS2388 also has the flexibility to support UPoE and other
The Port remapping and the device pinout allow designers to enable 2-layer PCB designs
and simplify software migration from previous generation PSE devices. The external FET architecture
allows designers to further balance size, efficiency, thermal, and solution cost requirements. The
current foldback reduces thermal stress on the external MOSFETs during startup and overload
conditions allowing the use of cheaper FETs.
The Fast Shutdown (OSS) input provides up to eight levels of per port shutdown priority
for applications that require the immediate disabling of multiple ports.
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