LM5015 - High Voltage Monolithic Two-Switch Forward DC-DC Regulator
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Design Tools Application Notes Knowledge Base

Features
•Dual Integrated 75V N-Channel MOSFETs
•Ultra-wide input voltage range: 4.25V to 75V
•Integrated high voltage bias regulator
•Adjustable output voltage
•1.5% feedback reference accuracy
•Current mode control with selectable compensation
•Wide bandwidth error amplifier
•Integrated current sensing and limiting
•50% maximum duty cycle limit
•Single resistor oscillator programming
•Oscillator synchronization capability
•Programmable soft-start
•Enable / Under-voltage Lockout (UVLO) pin
•Thermal shutdown

General Description

The LM5015 high voltage switch mode regulator features all the functions necessary to implement efficient high voltage Two-Switch Forward and Two-Switch Flyback regulators, using a minimum of external components. More...


  Typical Application
click for larger image


ParametersValues
Output Range Undefined
Switch Current 1.2 Amp
Input Min Voltage 4.25 Volt
Input Max Voltage 75 Volt
Frequency Max 750 kHz
Output Min Undefined Volt
Output Max Undefined Volt
Efficiency (peak) 87 %
Sync Pin Yes
Adj Switch Frequency Yes
Frequency Min 25 kHz
On/Off Pin Yes
Error Flag No
SoftStart Yes
PWM Mode Current Mode
Topology Two-Switch Forward
Step-Up Yes
Inverting Yes
Flyback Yes
RegType Switching Regulator
Adjustable Output Yes
Output Power Undefined Watt
Temperature Min -40 deg C
Temperature Max 125 deg C


Typical Performance

click for larger image


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LM5015
 
9.00 <=		 V in Lower
 V		  
<=		 V in Upper
 V		  
<= 72.00
V out 3.30 <=  V <= 15.00
I out    A <= 2.50
Ambient Temperature  °C <= 100


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Also Recommended
LM5001▲High Voltage Single-Switch Regulator
Additional Resources
Design Tools

Application Notes


Connection Diagram

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Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM5015 High Voltage Monolithic Two-Switch Forward DC-DC Regulator 390
Kbytes		 15-Jan-09 Download

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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
LM5015ISOEVALHigh Voltage Monolithic Two-Switch Forward Isolated DC-DC Converter Evaluation BoardFull productionN/A
 
Buy Now 		1+$70.001-
8 weeksN/A
LM5015NISOEVALHigh Voltage Monolithic Two-Switch Forward DC-DC Converter Evaluation BoardFull productionN/A
 
Buy Now 		1+$60.001-
8 weeksN/A
LM5015MHTSSOP EXP PAD14NOPB1260RoHS N/A Full productionN/A
 
Buy Now 		1K+$2.05rail
of
94		NSUZXYTT
LM5015
MH
6 weeksN/A
LM5015MHETSSOP EXP PAD14NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$2.05reel
of
250		NSUZXYTT
LM5015
MH
6 weeksN/A
LM5015MHXTSSOP EXP PAD14NOPB1260RoHS N/A Full productionN/A
 
Buy Now 		1K+$2.05reel
of
2500		NSUZXYTT
LM5015
MH
6 weeksN/A

General Description

The LM5015 high voltage switch mode regulator features all the functions necessary to implement efficient high voltage Two-Switch Forward and Two-Switch Flyback regulators, using a minimum of external components. This easy to use regulator integrates high side and low side 75 Volt N-Channel MOSFETs with a minimum 1 Amp peak current limit. The voltage across the MOSFETs employed in the two-switch topology is clamped to the input voltage, allowing the input voltage range to approach the rating of the MOSFETs. The regulator control method is based on current mode control providing inherent ease of loop compensation and line feed-forward for superior rejection of input transients.

The operating frequency is set with a single resistor and is programmable up to 750 kHz. The oscillator can also be synchronized to an external clock. Additional protection features include cycle-by-cycle current limiting, thermal shutdown, under-voltage lockout and remote shutdown capability. The device is available in the TSSOP-14EP package featuring an exposed die attach pad to enhance thermal dissipation.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM5015MHABCD150XV1038680025950002736338335
LM5015MHEABCD150XV1038680025950002736338335
LM5015MHXABCD150XV1038680025950002736338335

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    
LM5015 Isolated Quickstart Design Spreadsheet 154 Kbytes 7-Jan-2009 View    
LM5015 Non Isolated Quickstart Design Spreadsheet 381 Kbytes 7-Jan-2009 View    
"Article - Two-Switch Topology Boosts Forward, Flyback Designs"     View    

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Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1724: Application Note 1724 LM5015 Isolated Two-Switch DC-DC Regulator Evaluation Board 167
Kbytes		 29-Oct-07 Download
AN-1725: Application Note 1725 LM5015 Non-Isolated Two-Switch DC-DC Regulator Evaluation Board 161
Kbytes		 29-Oct-07 Download

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More Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1352: Application Note 1352 LM5010 Evaluation Board 591
Kbytes		 2-Dec-04 Download

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[Information as of 8-Nov-2009]