IC reference design search
IC manufacturers Texas Instruments

IC manufacturers (104)

reference designTPS23751PWP

Texas Instruments TPS23751PWP

IEEE 802.3at PoE Interface and Green-mode DC/DC Controller

Overview

TopologyFlyback Converter
Input voltage9.2-57 V
IC revision00

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.

Features

IEEE 802.3at Classification With Status FlagHigh Efficiency Solutions Over Wide Load RangePowers Up to 25.5 W PDsRobust 100 V, 0.5 Ω Hotswap MOSFETSynchronous Rectifier Disable SignalPowerPAD™ TSSOP PackagesComplete PoE Interface Plus DC-DC ControllerAdapter ORing SupportProgrammable FrequencyTPS23752 Supports Ultra-Low Power SleepModes–40°C to 125°C Junction Temperature Range

More information

Products

Log in now to view availability and request availability forecasts. LOGIN
Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
IR(mA)
ISAT(A)
fres(MHz)
Z @ 100 MHz(Ω)
Zmax(Ω)
Test Condition Zmax
IR 2(mA)
RDC max.(Ω)
Type
Version
VIN
VOut1(V)
IOut1(A)
VOut2(V)
IOut2(A)
Vaux(V)
n
VT(V (AC))
Size
IR(mA)
RDC max.(Ω)
Data rate
Ports
PoE
Improved CMRR
Operating Temperature
Mount
L(µH)
SamplesAvailability & Sample
Log in now to view availability and request availability forecasts. LOGIN
742792641
SPECWE-CBF SMT EMI Suppression Ferrite Bead, 1500 mA, –
Simu­lation
Availability
–
Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-CBF SMT EMI Suppression Ferrite Bead
Rated Current1500 mA
–
–
Impedance @ 100 MHz300 Ω
Maximum Impedance450 Ω
Maximum Impedance250 MHz 
Rated Current 22000 mA
DC Resistance0.15 Ω
TypeHigh Current 
VersionSMT 
–
–
–
–
–
–
–
–
Size0603 
Rated Current2000 mA
DC Resistance [1]0.15 Ω
–
–
–
–
Operating Temperature -55 °C up to +125 °C
MountSMT 
–
–Check availability
744042003
SPECWE-TPC SMT Tiny Power Inductor, 1950 mA, 1.8 A
Simu­lation
Availability
–
Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-TPC SMT Tiny Power Inductor
Rated Current1950 mA
Saturation Current1.8 A
Self Resonant Frequency80 MHz
–
–
–
–
DC Resistance0.065 Ω
–
VersionSMT 
–
–
–
–
–
–
–
–
Size4818 
–
–
–
–
–
–
Operating Temperature -40 °C up to +125 °C
MountSMT 
Inductance3.3 µH
–Check availability
7491195112
SPECWE-PoEH Power over Ethernet High Power Transformer, –, 4.2 A
Simu­lation–
Availability
–
Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PoEH Power over Ethernet High Power Transformer
–
Saturation Current4.2 A
–
–
–
–
–
–
–
VersionFlyback 
Input Voltage 33 - 57 V (DC)
Output Voltage 112 V
Output Current 11.5 A
Output Voltage 212 V
Output Current 21.5 A
Auxiliary Voltage12 V
Turns Ratio2.67:1:1:1 
Insulation Test Voltage1500 V (AC)
SizeEPQ13 
–
–
–
–
–
–
Operating Temperature -40 °C up to +125 °C
MountSMT 
Inductance41 µH
–Check availability
749022016
SPECWE-LAN LAN Transformer, –, –
Simu­lation
Availability
–
Downloads4 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LAN LAN Transformer
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Turns Ratio1:1 
Insulation Test Voltage1500 V (AC)
–
–
–
Data rate1000BASE-T 
Ports1 
PoEPoE+ (up to 1150 mA) 
Improved Common Mode RejectionNo 
Operating Temperature 0 °C up to +70 °C
MountSMT 
Inductance350 µH
–Check availability