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LM5015

ACTIVE

4.25-75V, Monolithic Two-Switch Forward DC-DC Regulator

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LM5180 ACTIVE 65-VIN no-opto flyback converter with 100-V, 1.5-A integrated MOSFET PSR flyback topology eliminates opto coupler.

Product details

Vin (min) (V) 4.25 Vin (max) (V) 75 Vout (min) (V) 1.26 Vout (max) (V) 37 Iout (max) (A) 3 Iq (typ) (mA) 0.11 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 750 Features Enable, Frequency synchronization Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 50 Type Converter
Vin (min) (V) 4.25 Vin (max) (V) 75 Vout (min) (V) 1.26 Vout (max) (V) 37 Iout (max) (A) 3 Iq (typ) (mA) 0.11 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 750 Features Enable, Frequency synchronization Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 50 Type Converter
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • 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

Package

  • HTSSOP-14EP (Exposed Pad)

All trademarks are the property of their respective owners.

  • 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

Package

  • HTSSOP-14EP (Exposed Pad)

All trademarks are the property of their respective owners.

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 HTSSOP-14EP package featuring an exposed die attach pad to enhance thermal dissipation.

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 HTSSOP-14EP package featuring an exposed die attach pad to enhance thermal dissipation.

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Technical documentation

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Type Title Date
* Data sheet LM5015 High Voltage Monolithic Two-Switch Forward DC-DC Regulator datasheet (Rev. C) 29 Mar 2013
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Improving the Performance of Traditional Flyback-Topology With Two-Switch –Appro 22 Jul 2014
EVM User's guide LM5015 Isolated Two-Switch DC-DC Regulator Evaluation Board (Rev. A) 30 Apr 2013
EVM User's guide LM5015 Non-Isolated Two-Switch DC-DC Regulator Evaluation Board (Rev. A) 30 Apr 2013
More literature LM5015 Isolated Quickstart Design Spreadsheet 26 Jan 2012
More literature LM5015 Non Isolated Quickstart Design Spreadsheet 26 Jan 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM5015ISOEVAL — High Voltage Monolithic Two-Switch Forward Isolated DC-DC Converter Evaluation Board

High Voltage Monolithic Two-Switch Forward Isolated DC-DC Converter Evaluation Board
User guide: PDF
Not available on TI.com
Evaluation board

LM5015NISOEVAL — High Voltage Monolithic Two-Switch Forward DC-DC Converter Evaluation Board

The LM5015 Non-Isolated DC-DC Regulator evaluation board provides a low cost and fully functional DC-DC regulator without employing any discrete power MOSFET. The evaluation board can be configured as either a Non-Isolated Two-Switch Forward DC-DC Regulator, or a Two-Switch Flyback DC-DC Regulator. (...)

User guide: PDF
Not available on TI.com
Calculation tool

FLYBUCK-FLYBACK-DESIGN-CALC Flybuck / Flyback Calculator

This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.

Supported products & hardware

Supported products & hardware

Products
Boost converters (integrated switch)
LM2577 3.5-V to 40-V, 3-A low component count step-up regulator LM2585 4-V to 40-V, 3-A step-up wide VIN flyback regulator LM2586 4-V to 40-V, 3-A step-up wide VIN flyback regulator with frequency synchronization LM2587 4V to 40V, 5A Step-Up Wide Vin Flyback Regulator LM2588 4-V to 40-V, 5-A step-up wide VIN flyback regulator with frequency synchronization LM2621 1.2V to 14V input voltage, 1A load current, step-up DC-DC LM2623 0.8V to 14V input voltage, 2A load current, step-up DC-DC LM2623-Q1 0.8-V to 14-V input voltage, 2-A load current, step-up DC/DC, AEC-Q100 qualified LM2735 520kHz/1.6MHz space efficient boost and SEPIC DC-DC regulator LM2735-Q1 520-kHz, 1.6-MHz space efficient boost and SEPIC DC/DC regulator, AEC-Q100 qualified LM3578A 2-V to 40-VIN switching regulators in buck, boost, terminal, depending upon the application LM5000 3.1-40V Wide Vin, 2A Current Mode Non-Synchronous Boost Regulator LM5001 3.1-75V Wide Vin, 1A Current Mode Non-Synchronous Switch Mode Regulator LM5001-Q1 3.1-V to 75-V wide VIN, 1-A current mode non-synchronous switch mode regulator LM5002 3.1-75V Wide Vin, 0.5A Current Mode Boost, Flyback, Sepic Converter LM78S40 1.5A Adjustable Step Up, Step Down or Inverting Regulator TPS55340 5-A, 40-V, wide VIN boost, flyback, & SEPIC converter TPS55340-EP Enhanced integrated, 5-A, 40-V wide input range boost/SEPIC/flyback DC/DC regulator TPS55340-Q1 Integrated, 5-A 40-V wide input range boost/SEPIC/flyback DC/DC regulator, AEC-Q100 qualified TPS61175 3-A ,40V High Voltage Boost Converter with Soft-start and Programmable Switching Frequency TPS61175-Q1 3-A, 40-V high voltage boost converter with soft-start and programmable switching frequency
Buck converters (integrated switch)
LM5015 4.25-75V, Monolithic Two-Switch Forward DC-DC Regulator
Isolated DC/DC converters & modules
LM25017 7.5-48V Wide Vin, 650mA Constant On-Time Synchronous Buck Regulator LM25018 7.5-48V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator LM25019 7.5-48V Wide Vin, 100mA Constant On-Time Synchronous Buck Regulator LM34925 7.5-100V Wide Vin, 100mA Integrated Secondary Bias Regulator for Isolated DC/DC Converters LM34926 7.5-100V Wide Vin, 300mA Integrated Secondary Bias Regulator for Isolated DC/DC Converters LM34927 7.5-100V Wide Vin, 600mA Integrated Secondary Bias Regulator for Isolated DC/DC Converters LM5017 7.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator LM5018 7.5-100V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator LM5019 7.5-100V Wide Vin, 100mA Constant On-Time Synchronous Buck Regulator LM5160 LM5160 wide input 65V, 2A synchronous buck/Fly-Buck™ converter LM5160-Q1 Wide Input 65V, 2A Synchronous Buck / Fly-Buck™ Converter LM5160A LM5160A Wide Input 65V, 2A Synchronous Buck / Fly-Buck™ Converter LM5161 Wide Input 4.5-V to 100-V, 1-A Synchronous Buck / Fly-Buck Converter TPS55010 2.95V To 6V Input, 2W, Isolated DC/DC Converter with Integrated FETS
Boost controllers (external switch)
LM3017 High Efficiency Low-Side Controller with True Shutdown LM3478 2.97~40V Wide Input Range Boost/SEPIC/Flyback DC-DC Controller LM3478Q-Q1 40-V wide VIN low-side N-channel controller for switching regulators with 10-µA shutdown current LM3481 2.97V to 48V High-Efficiency Controller for Boost, SEPIC and Flyback LM3481-Q1 2.97-V to 48-V high-efficiency controller for boost, SEPIC and flyback, AEC-Q100 qualified LM3488 2.97V to 40V Wide Vin Low-Side N-Channel Controller for Switching Regulators LM3488Q-Q1 40-V wide VIN low-side N-channel controller for switching regulators with 5-µA shutdown current LM5020 13-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller LM5022 6-60V Wide Vin, current mode boost, SEPIC and Flyback controller TL1451 Dual Pulse-Width-Modulation Control Circuit TL1451A 3.6V to 50V dual channel controller with Wide input voltage range TL1451A-EP Enhanced Product Dual Pulse-Width-Modulation Control Circuits TL1451A-Q1 3.6-V to 50-V dual-channel PWM controller, AEC-Q100 qualified TL5001 PWM Controller with wide input range, with ±5% tolerance on reference, operation –20°C to 85°C TL5001A PWM Controller with wide input range, with ±3% tolerance on reference, operation –20°C to 85°C TL5001A-Q1 PWM Controller with wide input range, with ±3% tolerance on reference, operation –20°C to 85°C TL5001M PWM Controller with wide input range, with ±5% tolerance on reference, operation –55°C to 125°C TPS40210-Q1 4.5-V to 52-V wide input range current mode boost controller with 700-mV reference voltage TPS40211-Q1 4.5-V to 52-V wide input range current mode boost controller with 260-mV reference voltage TPS43000 Multi-Topology (buck, boost, sepic) High Frequency DC/DC Controller UC2572 Negative output Flyback pulse width modulator
PWM controllers
LM3524D 40V, 0.2A 350KHz PWM controller
Calculation tool

LM5015ISOLATED-CALC — LM5015 Isolated Quickstart Design Spreadsheet

Calculation tool

LM5015NON-ISOLATED-CALC — LM5015 Non Isolated Quickstart Design Spreadsheet

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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HTSSOP (PWP) 14 View options

Ordering & quality

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Information included:
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