LM5015 - High Voltage Monolithic Two-Switch Forward DC-DC Regulator

Datasheet Packaging Samples & Pricing Eval. Boards 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


Parametric Table     expand
Parametric Table    collapse
Switch Current 1.2 Amp
Input Min Voltage 4.25 Volt
Input Max Voltage 75 Volt
Frequency Max 750000 Hz
Switch Current 1.2 Amp
Input Min Voltage 4.25 Volt
Input Max Voltage 75 Volt
Frequency Max 750000 Hz
Efficiency (peak) 87 %
Sync Pin Yes
Adj Switch Frequency Yes
Frequency Min 25000 Hz
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
Temperature Min -40 deg C
Temperature Max +125 deg C
View Using Catalog


Typical Performance


click for larger image


  WEBENCH Live Simulation!
LM5015 WEBENCH® Custom
Design/Analyze/Build It/Test It
 
36.00 <=
V in Lower
V
 
<=
V in Upper
V
 
<= 72.00
V out 5.00 <= V <= 5.00
I out   A <= 2.50
Ambient Temperature °C <= 100

What are WEBENCH® tools?


Also Recommended
LM5001High Voltage Single-Switch Regulator

Additional Resources


Design Tools (see below)

Application Notes (see below)


Connection Diagram


click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to View Online Click link below to Download Click link below to Receive via Email
LM5015 High Voltage Monolithic Two-Switch Forward DC-DC Regulator 391 Kbytes 10-Dec-07 View Online Download Receive via Email

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
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
Samples
Buy Now
1K+$2.05rail
of
94
NSUZXYTT
LM5015
MH
8 weeksN/A
LM5015MHETSSOP EXP PAD14NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now
500+$2.29reel
of
250
NSUZXYTT
LM5015
MH
8 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.

Design Tools


TitleSize in Kbytes Date Click link below to View Online Click link below to Download Click link below to Receive via Email
LM5015 Isolated Quickstart Design Spreadsheet 148 Kbytes 13-Aug-2008 View    
LM5015 Non Isolated Quickstart Design Spreadsheet 377 Kbytes 13-Aug-2008 View    
Two-Switch Topology Boosts Forward, Flyback Designs     View    

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

Application Notes


TitleSize in Kbytes Date Click link below to View Online Click link below to Download Click link below to Receive via Email
AN-1725: Application Note 1725 LM5015 Non-Isolated Two-Switch DC-DC Regulator Evaluation Board 161 Kbytes 29-Oct-07 View Online Download Receive via Email
AN-1724: Application Note 1724 LM5015 Isolated Two-Switch DC-DC Regulator Evaluation Board 167 Kbytes 29-Oct-07 View Online Download Receive via Email
AN-1352: Application Note 1352 LM5010 Evaluation Board 591 Kbytes 2-Dec-04 View Online Download Receive via Email
AN-1423: Application Note 1423 LM5010A Evaluation Board 643 Kbytes 4-Dec-05 View Online Download Receive via Email
AN-1481: Application Note 1481 Controlling Output Ripple and Achieving ESR Independence in Constant On-Time (COT) Regulator Designs 574 Kbytes 27-Sep-06 View Online Download Receive via Email
AN-1481 (Japanese): Application Note 1481 Controlling Output Ripple and Achieving ESR Independence in Constant On-Time (COT) Regulator Designs
220 Kbytes   View Online Download Receive via Email
AN-1481 (Chinese): Application Note 1481 Controlling Output Ripple and Achieving ESR Independence in Constant On-Time (COT) Regulator Designs
421 Kbytes  

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

[Information as of 29-Aug-2008]