Version 13
    Analog Demo Boards > Power Management > Step-Up/Down (Buck-Boost) Regulator >
    • Evaluation Board for the LM5118 Wide Vin Buck-Boost Controller
    • Evaluation Board for the LM5118 Wide Vin Buck-Boost Controller


    The LM5118 evaluation board is designed to provide the design engineer with a fully functional, Emulated Current Mode Control, buck-boost power converter to evaluate the LM5118 controller IC. The evaluation board provides a 12 V output with 3 A of output current capability. The evaluation board’s wide input voltage range is from 75 V to 5 V, with operation down to 3 V with some component changes. The evaluation board operates at 300 kHz, a good compromise between conversion efficiency, tradeoffs between buck and buck-boost mode requirements, and converter size. The board is constructed with FR4 material. This user's guide contains the evaluation board schematic and Bill of Materials (BOM).


    • Automotive Infotainment
    • Automotive Start/Stop Systems
    • Industrial Buck/Boost Supplies




    Features of LM5118/LM5118-Q1:

    • LM5118-Q1 is an Automotive Grade Product that is AEC-Q100 grade 1 Qualified (-40°C to 125°C Operating Junction Temperature)
    • Ultra-wide Input Voltage Range from 3 V to 75 V
    • Emulated Peak Current Mode Control
    • Smooth Transition Between Step-Down and Step-Up Modes
    • Switching Frequency Programmable to 500 KHz
    • Oscillator Synchronization Capability
    • Internal High Voltage Bias Regulator
    • Integrated High and Low-side Gate Drivers
    • Programmable Soft-Start Time
    • Ultra Low Shutdown Current
    • Enable Input Wide Bandwidth Error Amplifier
    • 1.5% Feedback Reference Accuracy
    • Thermal Shutdown

    Ships With

    • Evaluation Board

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