TPS23752 Series

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

Catalog

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

Part	Voltage - Output	Utilized IC / Part	Voltage - Input [Max]	Voltage - Input [Min]	Board Type	Frequency - Switching	Regulator Topology	Supplied Contents	Current - Output	Outputs and Type	Outputs and Type	Power - Output	Main Purpose	Voltage - Supply [Min]	Voltage - Supply [Max]	Standards	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Current - Supply	Number of Channels	Power - Max [Max]	Type	Package / Case	Package / Case [custom]	Package / Case	Supplier Device Package
Texas Instruments TPS23752EVM-145	5 V	TPS23752	57 V	21.6 V	Fully Populated	250 kHz	Flyback	Board(s)	5 A	Isolated	1	25 W	Power Over Ethernet Special Purpose DC/DC
Texas Instruments TPS23752PWP														0 V	57 V	802.3af (PoE) 802.3at (PoE+)	85 °C	-40 °C	Surface Mount	1.8 mA	1	25.5 W	Controller (PD) DC/DC	20-PowerTSSOP	4.4 mm	0.173 in	20-HTSSOP
Texas Instruments TPS23752PWPR														0 V	57 V	802.3af (PoE) 802.3at (PoE+)	85 °C	-40 °C	Surface Mount	1.8 mA	1	25.5 W	Controller (PD) DC/DC	20-PowerTSSOP	4.4 mm	0.173 in	20-HTSSOP

Catalog

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

Key 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 Sleep Modes–40°C to 125°C Junction Temperature RangeIEEE 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 Sleep Modes–40°C to 125°C Junction Temperature Range

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. 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.