All trademarks are the property of their respective owners.
Description
The TPS23751PWPR 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 TPS23751PWPR 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.
Feature
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
All trademarks are the property of their respective owners.
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.
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
