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Home > Embedded ICs > Embedded - Microcontroller Unit (MCU) > TPS23751PWPR
Texas Instruments

TPS23751PWPR

TPS23751PWPR

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TPS23751PWPR Overview

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Description

The TPS23751 is a 16-pin integrated circuit that combines a Power-over-Ethernet (PoE)powered device (PD) interface and a current-mode DC-DC controller optimized specifically forapplications requiring high efficiency over a wide load range.

The PoE interface implements type-2 hardware classification per IEEE 802.3at. It alsoincludes an auxiliary power detect (APD) input and a disable function (DEN). A 0.5-Ω, 100-V passMOSFET minimizes heat dissipation and maximizes power utilization.

The DC-DC controller features internal soft-start, a bootstrap startup current source,current-mode control with slope compensation, blanking, and current limiting. Efficiency isenhanced at light loads by disabling synchronous rectification and entering variable frequencyoperation (VFO).

The TPS23752 is a 20-pin extended version of the TPS23751 with the addition of a SleepMode feature. Sleep Mode disables the converter to minimize power consumption while stillgenerating the Maintain Power Signature (MPS) required by IEEE802.3at.

Features

  • IEEE 802.3at Classification With Status Flag
  • High Efficiency Solutions Over Wide Load Range
  • Powers Up to 25.5 W PDs
  • Robust 100 V, 0.5 Ω Hotswap MOSFET
  • Synchronous Rectifier Disable Signal
  • PowerPAD? TSSOP Packages
  • Complete PoE Interface Plus DC-DC Controller
  • Adapter ORing Support
  • Programmable Frequency
  • TPS23752 Supports Ultra-Low Power Sleep Modes
  • –40°C to 125°C Junction Temperature Range

Specifications

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