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Overview
| Topology | Flyback Converter |
| Input voltage | 9.2-57 V |
| IC revision | 00 |
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
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L(µH) | IR(A) | ISAT(A) | fres(MHz) | Mount | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(mΩ) | Type | Version | VIN | VOut1(V) | IOut1(A) | VOut2(V) | IOut2(A) | Vaux(V) | n | VT(V (AC)) | Size | IR(mA) | RDC max.(Ω) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-TPC SMT Tiny Power Inductor, 3.3 µH, 1.95 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | Inductance3.3 µH | Rated Current1.95 A | Saturation Current1.8 A | Self Resonant Frequency80 MHz | MountSMT | – | – | – | – | DC Resistance65 mΩ | – | VersionSMT | – | – | – | – | – | – | – | – | Size4818 | – | – | ||||
 | WE-PoEH Power over Ethernet High Power Transformer, 41 µH, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PoEH Power over Ethernet High Power Transformer | Inductance41 µH | – | Saturation Current4.2 A | – | MountSMT | – | – | – | – | – | – | 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 | – | – | |||
749022016 | 10/100/1000 Base-T SMT Transformer, 350 µH, – | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series 10/100/1000 Base-T SMT Transformer | Inductance350 µH | – | – | – | MountSMT | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Insulation Test Voltage1500 V (AC) | – | – | – | |||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, 1.5 A | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | Rated Current1.5 A | – | – | MountSMT | Impedance @ 100 MHz300 Ω | Maximum Impedance450 Ω | Maximum Impedance250 MHz | Rated Current 22000 mA | DC Resistance150 mΩ | TypeHigh Current | VersionSMT | – | – | – | – | – | – | – | – | Size0603 | Rated Current2000 mA | DC Resistance [1]0.15 Ω |