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TPS23752PWP

IEEE 802.3at PoE interface with flyback DC-DC controller and Sleep Mode Feature

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TPS23752PWP General 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 for applications requiring high efficiency over a wide load range.

The PoE interface implements type-2 hardware classification per IEEE 802.3at. It also includes an auxiliary power detect (APD) input and a disable function (DEN). A 0.5-Ω, 100-V pass MOSFET 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 is enhanced at light loads by disabling synchronous rectification and entering variable frequency operation (VFO).

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

Texas Instruments, Inc Inventory

Key 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
Texas Instruments, Inc Original Stock
Texas Instruments, Inc Inventory

Specifications

Category Integrated Circuits (ICs)Power Management (PMIC)Power Over Ethernet (PoE) Controllers Mfr Texas Instruments
Series - Package Tube
Product Status Active Type Controller (PD), DC/DC
Number of Channels 1 Power - Max 25.5 W
Internal Switch(s) Yes Auxiliary Sense Yes
Standards 802.3at (PoE+), 802.3af (PoE) Voltage - Supply 0V ~ 57V
Current - Supply 1.8mA Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount Package / Case 20-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package 20-HTSSOP Base Product Number TPS23752

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