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3-65V Wide Vin, Current Mode Synchronous Boost Controller with Multiphase Capability


Models (5)

Title Category Type Date
LM5122-Q1 PSpice Model (Rev. B) PSpice Model ZIP 28 Jan 2020
LM5122 PSpice Average Model PSpice Model ZIP 30 Jun 2017
LM5122 Dual-Phase TINA-TI Transient Reference Design TINA-TI Reference Design TSC 18 Aug 2016
LM5122 TINA-TI Transient Spice Model (Rev. B) TINA-TI Spice Model ZIP 26 May 2015
LM5122 TINA-TI Transient Reference Design (Rev. B) TINA-TI Reference Design TSC 26 May 2015

Design kits & evaluation modules (4)

Reference designs

Tiny SEPIC reference design with 12-V/ 2.5-A output

This reference design is a 12-V pre regulator reference design for multiple automotive applications powering up to 36-W. The used SEPIC topology allows to step up and step down the input voltage, so cranking down to 5-V is supported; the controller LM5122 itself allows cranking down to 3-V at (...)

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

Description Part Number Company Tool Type
10.8Vin to 13.2Vin; 48Vout @ 7.3A; 4-Phase Synchronous Boost Converter PMP7944 Texas Instruments Reference designs
12Vin to 50Vin (67Vin Peak); 48Vout @ 2.5A; Single-Phase Synchronouos Boost Converter PMP7965 Texas Instruments Reference designs
12Vin; 20Vout @ 8A; Single-Phase Synchronous Boost Converter PMP7961 Texas Instruments Reference designs
18 to 20Vin 25 to 85Vout @3A Continuous 5.7A Peak Dual-Phase Sync Boost Converter Reference Design PMP9309 Texas Instruments Reference designs
18Vin to 20Vin; 53Vout to 84Vout @ 1A; Single-Phase Synchronous Boost Converter PMP7950 Texas Instruments Reference designs
48Vin; 110Vout @ 3A; Dual-Phase Non-Synchronous Boost Converter PMP7973 Texas Instruments Reference designs
51V@1.25A Automotive Range Sync Boost converter PMP8532 Texas Instruments Reference designs
6Vin to 16Vin; 12Vout @ 16.7A; Single-Phase Synchronous Boost Converter PMP7959 Texas Instruments Reference designs
7.5Vin to 10Vin; 11.5Vout @ 65A; 4-Phase Synchronous Boost Converter PMP7937 Texas Instruments Reference designs
9 to 16Vin 12Vout @ 5A Single-Phase Synchronous Flyback Converter Reference Design PMP9258 Texas Instruments Reference designs
Automotive Boost Converter with Reverse Battery Protection PMP7936 Texas Instruments Reference designs
Multi-Phase Boost (Step-Up) Converter PMP7850 Texas Instruments Reference designs
Multi-Phase Boost with a 35V in and 38 to 55 Volt Output PMP7869 Texas Instruments Reference designs
Synchronous Boost, Where the Output Follows the Input during Overshoot PMP7896 Texas Instruments Reference designs

CAD/CAE symbols

Part# Package | Pins CAD File (.bxl) STEP Model (.stp)
LM5122 Download Download
Download -

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Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a free download.

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WEBENCH® Designer LM5122

  Min   Max Range
Vin  V 4.5 to 65.0V
Vout  V 4.5 to 100V
Iout  A ≤ 35A
Ambient Temp  °C -40 to 125°C