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48V Wide Vin High-Efficiency Controller for Boost, SEPIC and Flyback DC-DC Converters


Models (4)

Title Category Type Date
LM3481 Unencrypted PSpice Transient Model (Rev. D) PSpice Model ZIP 04 Oct 2019
LM3481 TINA-TI Load Transient Reference Design (Rev. C) TINA-TI Reference Design TSC 04 Oct 2019
LM3481 TINA-TI Steady State Reference Design (Rev. B) TINA-TI Reference Design TSC 27 Apr 2015

Design kits & evaluation modules (2)

Name Part# Type
High Efficiency Boost Switching Controller Eval Board with 12 Volt Output LM3481EVAL Evaluation Modules & Boards
LM3481 SEPIC Evaluation Board LM3481SEPICEVAL Evaluation Modules & Boards

Reference designs

High efficiency boost converter power supply reference design for automotive DC/AC inverter

This single-phase boost converter operates over an input voltage range of 120 V - 350 V and provides a non-isolated output of 221 V / 0.87 A. Input voltages above 221 V are passed through to the output. With an efficiency of greater than 97%, component losses are reduced, which results in lowers (...)

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

Description Part Number Company Tool Type
330mW AC or DC Tiny Flyback Converter Power Supply Reference Design LM3481-REF 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-Q1

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