LM5070 - Integrated Power Over Ethernet PD Interface and PWM Controller from the PowerWise® Family
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Design Tools Reference Designs Models Application Notes Knowledge Base

Features
Fully Compliant 802.3af Power Interface Port
80V, 1, 400 mA Internal MOSFET
Programmable Inrush Current Limit
Detection Resistor Disconnect Function
Programmable Classification Current
Programmable Under-voltage Lockout with Programmable Hysteresis
Thermal Shutdown Protection
Current Mode Pulse Width Modulator
Supports both Isolated and Non-Isolated Applications
Error Amplifier and Reference for Non-Isolated Applications
Programmable Oscillator Frequency
Programmable Soft-start
80% Maximum Duty Cycle Limiter, Slope Compensation (-80 device)
50% Maximum Duty Cycle Limiter, No Slope Compensation (-50 device)
800 mA Peak Gate Driver

General Description


The LM5070 power interface port and pulse width modulation (PWM) controller provides a complete integrated solution for Powered Devices (PD) that connect into Power over Ethernet (PoE) systems. More...


  Typical Application
*click for larger image


ParametersValues
Input Min Voltage 1.8 Volt
Input Max Voltage 75 Volt
Frequency Min 50 kHz
Frequency Max 1000 kHz
Reference Accuracy (+/-) 2.0 %
Current Draw with AUX Winding (typ) 0.7 mA
Special Features Fully compliant IEEE 802.3af PD interface, error amplifier for non-isolated designs, leading edge blanking, high current gate drive
On/Off Pin Yes
Error Flag No
Adjustable Output Yes
Output Min 1.25 Volt
Output Range 1.25V and above
Output Power 13 Watt
Adj Switch Frequency Yes
Efficiency (peak) 90.5 %
Topology Single Ended
Flyback Yes
Inverting Yes
Step-Up Yes
Step-Down Yes
RegType Switching Controller
Temperature Min -40 deg C
Temperature Max 125 deg C
PowerWise Yes


Typical Performance


click for larger image


  Also Recommended
LM5071Compatible With Auxilary Power Sources, Such As 12 V AC Adapters
LM5072Higher Transient Voltages (100V), Supplies More Current (750mA) And Compatible With Auxiliary Power
LM3411Feedback Control / Optocoupler Driver For Isolated Supplies
Additional Resources
Online Seminars Design Tools

Application Notes


Block Diagram


*click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM5070 Integrated Power Over Ethernet PD Interface and PWM Controller 840
Kbytes
4-Apr-06 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
LM5070AE EVALIntegrated Power Over Ethernet PD Interface and PWM ControllerFull productionLM5070_PSPICE_0325.zip
 
Buy Now
1+$101.001-
8 weeksN/A
LM5070HE EVALIntegrated Power Over Ethernet PD Interface and PWM ControllerFull productionLM5070_PSPICE_0325.zip
 
Buy Now
1+$120.001-
8 weeksN/A
LM5070MTC-50TSSOP16NOPB
STD
1
1
260
260
RoHS Download Full productionLM5070_PSPICE_0325.zip
Samples
Buy Now
1K+$1.45rail
of
92
NSUZXYTT
5070M
TC-50
6 weeks1000
LM5070MTC-80TSSOP16NOPB1260RoHS Download Full productionLM5070_PSPICE_0325.zip
Samples
Buy Now
1K+$1.45rail
of
92
NSUZXYTT
5070M
TC-80
6 weeks2000
LM5070MTCX-50TSSOP16NOPB
STD
1
1
260
260
RoHS Download Full productionLM5070_PSPICE_0325.zip
 
Buy Now
1K+$1.45reel
of
2500
NSUZXYTT
5070M
TC-50
6 weeks10000
LM5070MTCX-80TSSOP16NOPB1260RoHS Download Full productionLM5070_PSPICE_0325.zip
 
Buy Now
1K+$1.45reel
of
2500
NSUZXYTT
5070M
TC-80
6 weeks3000
LM5070SD-50LLP16NOPB1260RoHS Download Full productionLM5070_PSPICE_0325.zip
Samples
Buy Now
1K+$1.45reel
of
1000
NS
UZXYTT
L00051B
6 weeks2000
LM5070SD-80LLP16NOPB1260RoHS Download Full productionLM5070_PSPICE_0325.zip
Samples
Buy Now
1K+$1.45reel
of
1000
NS
UZXYTT
L00052B
6 weeks10
LM5070SDX-50LLP16NOPB1260RoHS Download Full productionLM5070_PSPICE_0325.zip
 
Buy Now
1K+$1.45reel
of
4500
NS
UZXYTT
L00051B
6 weeksN/A
LM5070SDX-80LLP16NOPB1260RoHS Download Full productionLM5070_PSPICE_0325.zip
 
Buy Now
1K+$1.45reel
of
4500
NS
UZXYTT
L00052B
6 weeksN/A

General Description


The LM5070 power interface port and pulse width modulation (PWM) controller provides a complete integrated solution for Powered Devices (PD) that connect into Power over Ethernet (PoE) systems. The LM5070 integrates an 80V, 400mA line connection switch and associated control for a fully IEEE 802.3af compliant interface with a full featured current mode pulse width modulator dc-dc converter. All power sequencing requirements between the controller interface and switch mode power supply (SMPS) are integrated into the IC. Two options are available providing either an 80% maximum duty cycle limit with slope compensation (on the -80 suffix) device or a 50% maximum duty cycle limit and no slope compensation on the (-50 suffix) device.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM5070MTC-50ABCD150XV1038680025950002736338335
LM5070MTC-80ABCD150XV1038680025950002736338335
LM5070MTCX-50ABCD150XV1038680025950002736338335
LM5070MTCX-80ABCD150XV1038680025950002736338335
LM5070SD-50ABCD150XV1038680025950002736338335
LM5070SD-80ABCD150XV1038680025950002736338335
LM5070SDX-50ABCD150XV1038680025950002736338335
LM5070SDX-80ABCD150XV1038680025950002736338335

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools


TitleSize in Kbytes Date Click link below to Download    
LM5070 PSPICE model 286 Kbytes 26-Mar-2009 View Download  

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Reference Designs
LM5070 Reference Design - Power-over-Ethernet (POE) Regulator, Low-cost, High Efficiency 5V 7W Output
LM5070 Reference Design - Isolated Power-over-Ethernet (POE) Regulator, Low-cost, High Efficiency 5V 7W Output

Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1358: Application Note 1358 LM5070 'AE' Evaluation Board 787
Kbytes
27-Jan-05 Download
AN-1346: Application Note 1346 LM5070 'HE' Evaluation Board 550
Kbytes
13-Mar-06 Download
AN-1346 (Chinese): Application Note 1346 LM5070 'HE' Evaluation Board
399 Kbytes  
AN-1408: Application Note 1408 Designing Power Over Ethernet Using LM5070 and DP83865 1072
Kbytes
10-Jan-06 Download
AN-1408 (Chinese): Application Note 1408 Designing Power Over Ethernet Using LM5070 and DP83865
697 Kbytes  
AN-1474: Application Note 1474 The LM507X Family of PoE Devices: Frequently Asked Questions (FAQs) 457
Kbytes
10-May-06 Download
AN-1474 (Chinese): Application Note 1474 The LM507X Family of PoE Devices: Frequently Asked Questions (FAQs)
388 Kbytes  

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More Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1875: Application Note 1875 LM5073HE Evaluation Board With Active Bridge 230
Kbytes
2-Jul-08 Download
AN-1574: Application Note 1574 LM5073 Evaluation Board 464
Kbytes
24-Apr-07 Download
AN-1455: Application Note 1455 LM5072 Evaluation Board 708
Kbytes
30-Mar-06 Download
AN-1455 (Chinese): Application Note 1455 LM5072 Evaluation Board
600 Kbytes  
AN-1430: Application Note 1430 LM5071 Evaluation Board 738
Kbytes
4-Jan-06 Download
AN-1521: Application Note 1521 POEPHYTEREV-I / -E User Guide 14913
Kbytes
4-Apr-08 Download

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[Information as of 7-Nov-2009]