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TPS23785B Datasheet High-efficiency Poe Pd And DC-to-dc Controller

Manufacturer: Texas Instruments

Overview: www.ti.com TPS23785B SLUSB90A – DECEMBER 2012 – REVISED DECEMBER 2012 High-Power, High-Efficiency PoE PD and DC-to-DC.

General Description

The TPS23785B is a combined Power over Ethernet (PoE) powered device (PD) interface and currentmode DC-to-DC controller optimized specifically for non-isolated converters.

The PoE interface supports the IEEE 802.3at standard.

The TPS23785B supports a number of input voltage ORing options including highest voltage, external adapter preference, and PoE preference.

Key Features

  • 1.
  • 2 Powers up to 30-W (Input) PDs.
  • DC-to-DC Control Optimized for Non-Isolated Converters.
  • Supports High-Efficiency Topologies.
  • Complete PoE Interface.
  • Enhanced Classification per IEEE 802.3at with Status Flag.
  • Adapter ORing Support.
  • Robust 100-V, 0.5-Ω Hotswap MOSFET.
  • 40°C to 125°C Junction Temperature Range.
  • Industry Standard PowerPAD™ TSSOP-24.

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