The TPS2372 contains all of the features needed to implement an
IEEE802.3at or IEEE802.3bt (draft) (Type 1-4) powered device (PD). The low internal switch
resistance allows the TPS2372-4 and TPS2372-3 to support
high power applications up to 90 W and 60 W respectively. Assuming 100-meter CAT5 cable, this
translates into 71.3 W and 51 W at PD input.
The TPS2372 operates with enhanced features.
The Automatic MPS function enables applications requiring very low power standby modes.
The TPS2372 automatically generates the necessary pulsed current to maintain
the PSE power. An external resistor is used to enable this functionality and to program the MPS
pulsed current amplitude.
The TPS2372 also implements a delay function to
allow the remote PSE to complete its inrush phase before releasing the Power Good (PG) output. This
ensures that the IEEE802.3bt (draft) startup requirements are met.
The Autoclass enable input also allows advanced system power
optimization modes compliant with IEEE802.3bt (draft) standard.
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