Integrated 100V Power Over Ethernet PD Interface And PWM Controller With Aux Support

The LM5072 Powered Device (PD) Interface and Pulse-Width-Modulation (PWM) controller provides a complete power solution, fully compliant to IEEE 802.3af, for the PD connecting into Power Over Ethernet (PoE) networks. This controller integrates all functions necessary to implement both a PD powered Interface and DC-DC Converter with a minimum number of external components. The LM5072 provides the flexibility for the PD to also accept power from auxiliary sources such as AC adapters in a variety of configurations. The low RDS(ON) PD Interface Hot Swap MOSFET and programmable DC current limit extend the range of LM5072 applications up to twice the power level of 802.3af compliant PD devices. The 100V maximum voltage rating simplifies selection of the Transient Voltage Suppressor that protects the PD from network transients. The LM5072 includes an easy-to-use PWM controller that facilitates the various single-ended power supply topologies including the flyback, forward and buck. The PWM control scheme is based on peak current mode control, which provides inherent advantages including line feed-forward, cycle-by-cycle current limit, and simplified feedback loop compensation. Two versions of the LM5072 provide either an 80% maximum duty cycle (-80 suffix), or a 50% maximum duty cycle (-50 suffix).
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM5072-12V-REF Texas Instruments LM5072 12Vout 25W PoE PD Power Eval-Board for IP Camera
LM5072MH-80 Texas Instruments 0.8A SWITCHING CONTROLLER, 645kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16
LM5072MHX-50 Texas Instruments 0.8A SWITCHING CONTROLLER, 645kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16
LM5072MH-50 Texas Instruments 0.8A SWITCHING CONTROLLER, 645kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16
LM5072MH-80/NOPB Texas Instruments Integrated 100V Power Over Ethernet PD Interface and PWM Controller with Aux Support 16-HTSSOP -40 to 125
LM5072MHX-50/NOPB Texas Instruments Integrated 100V Power Over Ethernet PD Interface and PWM Controller with Aux Support 16-HTSSOP -40 to 125
LM5072MHX-80/NOPB Texas Instruments Integrated 100V Power Over Ethernet PD Interface and PWM Controller with Aux Support 16-HTSSOP -40 to 125
LM5072MH-50/NOPB Texas Instruments Integrated 100V Power Over Ethernet PD Interface and PWM Controller with Aux Support 16-HTSSOP -40 to 125
LM5072EVAL Texas Instruments Integrated 100V Power Over Ethernet PD Interface and PWM Controller with Aux Support
POE-PD-POWER-REF Texas Instruments LM5072 5V out 25W IEEE 802.3at Compliant POE+ PD Power Reference Design
LM5072 's PackagesLM5072 's pdf datasheet
POEPHYTEREV-E
POEPHYTEREV-I
LM5072MH-50 TSSOP
LM5072MH-80 TSSOP
LM5072MHX-50 TSSOP
LM5072MHX-80 TSSOP




LM5072 Pinout, Pinouts
LM5072 pinout,Pin out
This is one package pinout of LM5072,If you need more pinouts please download LM5072's pdf datasheet.

LM5072 Application circuits
LM5072 circuits
This is one application circuit of LM5072,If you need more circuits,please download LM5072's pdf datasheet.


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