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LM5015

ACTIVE

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

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Data sheet

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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.

LM5015

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 75 Vin (min) (V) 4.25 Vout (max) (V) 37 Vout (min) (V) 1.26 Features Enable, Frequency synchronization Control mode current mode Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 750 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 110 Duty cycle (max) (%) 50 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 75 Vin (min) (V) 4.25 Vout (max) (V) 37 Vout (min) (V) 1.26 Features Enable, Frequency synchronization Control mode current mode Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 750 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 110 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

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
AC/DC & DC/DC controllers (external FET)
  • 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
  • LM3524D — 40V, 0.2A 350KHz PWM controller
  • LM3578A — 2-V to 40-VIN switching regulators in buck, boost, terminal, depending upon the application
  • 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
  • TPS55010 — 2.95V To 6V Input, 2W, Isolated DC/DC Converter with Integrated FETS
  • UC2572 — Negative output Flyback pulse width modulator
AC/DC & DC/DC converters (integrated FET)
  • 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
  • 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
  • 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
  • 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
  • LM5015 — 4.25-75V, Monolithic Two-Switch Forward DC-DC Regulator
  • 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
  • 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
Download
Calculation tool

LM5015ISOLATED-CALC — LM5015 Isolated Quickstart Design Spreadsheet

Download
Calculation tool

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

Download
Calculation tool

LM5015 Isolated Quickstart Design Spreadsheet

SNVU060.ZIP (58 KB)
Download
Calculation tool

LM5015 Non Isolated Quickstart Design Spreadsheet

SNVU061.ZIP (247 KB)
Download
Package Pins CAD symbols, footprints & 3D models
HTSSOP (PWP) 14 Ultra Librarian
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