LM3481 (ACTIVE) 2.97V to 48V High-Efficiency Controller for Boost, SEPIC and Flyback

 

Models (9)

Title Category Type Date
LM3481 PSpice Transient Model (Rev. D) PSpice Model ZIP 12 Mar 2019
LM3481 Unencrypted PSpice Transient Model (Rev. C) PSpice Model ZIP 12 Mar 2019
LM3481 Unencrypted PSpice Average Model PSpice Model ZIP 04 May 2015
LM3481 TINA-TI Steady State Reference Design (Rev. B) TINA-TI Reference Design TSC 27 Apr 2015
LM3481 TINA-TI Transient Spice Model (Rev. B) TINA-TI Spice Model ZIP 27 Apr 2015
LM3481 TINA-TI Load Transient Reference Design (Rev. B) TINA-TI Reference Design TSC 27 Apr 2015
LM3481 TINA-TI Average Spice Model TINA-TI Spice Model ZIP 21 Apr 2015
LM3481 TINA-TI Average Reference Design TINA-TI Reference Design TSC 21 Apr 2015
LM3481 PSpice Average Model PSpice Model ZIP 25 Jan 2013

Design kits & evaluation modules (3)

Name Part# Type
High Efficiency Boost Switching Controller Eval Board with 12 Volt Output LM3481EVAL Evaluation Modules & Boards
Isolated Flyback Topology Evaluation Module for LM3481 Boost Controller LM3481-FLYBACKEVM Evaluation Modules & Boards
LM3481 SEPIC Evaluation Board LM3481SEPICEVAL Evaluation Modules & Boards

Reference designs

20-48-Vdc input isolated flyback reference design with a 48-V, 1.25-A output

This reference design uses the LM3481 to provide an isolated 48-V output from a DC input ranging from 20 to 48-V. Its low profile design makes it suitable for applications where a small solution size is critical. The design achieves over 91% efficiency at a nominal 0.8-A load, and can provide a (...)

View the Important Notice for reference designs covering authorized use, intellectual property matters and disclaimers.

Description Part Number Company Tool Type
24W Boost Converter Optimized for Low Profile/Small Area PMP7424 Texas Instruments Reference designs
330mW AC or DC Tiny Flyback Converter Power Supply Reference Design LM3481-REF Texas Instruments Reference designs
40W SEPIC Conv w/Coupled-Inductor Hi Efficiency Operating w/Automotive Input Range Reference Design PMP9184B Texas Instruments Reference designs
40W SEPIC Conv w/Dual-Inductor High Efficiency Operating w/Automotive Input Range Reference Design PMP9184C Texas Instruments Reference designs
6 to 16Vin 12V@4A Output Wide Vin SEPIC Converter Reference Design PMP9332 Texas Instruments Reference designs
9.5V @ 1.5A Automotive Boost Converter PMP8536 Texas Instruments Reference designs
Automotive Range SEPIC Converter Delivers 12V@1A Reference Design PMP8937 Texas Instruments Reference designs
Automotive Range SEPIC Converter Delivers 4.5V@5.5A Reference Design PMP8903 Texas Instruments Reference designs
Battery Powered Boost Converter Delivers 120Vdc @ 10mA Reference Design PMP8956 Texas Instruments Reference designs
Boost for Capacitor Charging with 48V @ 1A Peak Reference Design PMP8711 Texas Instruments Reference designs
Boost, 100.0V @ 10mA PMP7129 Texas Instruments Reference designs
Boost, 5.0V @ 0.9A PMP7185 Texas Instruments Reference designs
Sepic, 12.0-100.0V @ 10mA PMP7135 Texas Instruments Reference designs
Sepic, 6.0V @ 1.5A PMP7155 Texas Instruments Reference designs
Sepic, 7.8V @ 0.8A PMP7130 Texas Instruments Reference designs

Software (1)

Development tools (1)

Name Part# Type
Fly-Buck and Flyback Topology Selector FLYBUCK-FLYBACK-DESIGN-CALC Calculation Tools
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WEBENCH® Designer LM3481

Topology Option
  Min   Max Range
Vin  V 7 to 42V
Vout  V 1.225 to 30V
Iout  A 0 to 2.5A
Ambient Temp  °C -40 to 125°C