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  • LM5109B: Gate driver input resistance

    TI Thinks Resolved
    Part Number: LM5109B Other Parts Discussed in Thread: LM5109 Hello, checking the MPPT charge controller reference design for 12- and 24-V solar panels a RC filter has been added between the mcu and LM5109. Is this RC (or only R) suggested when a 3…

  • LM5109B: Control Voltage of HO and LO

    TI Thinks Resolved
    Part Number: LM5109B HI, i'm just wondering how to control the output voltage of HO and LO, since I'm need 48V at HO and 12V at LO Thanks, Allen
    • Answered

  • LM5109B: Control Voltage of HO and LO

    Resolved
    Part Number: LM5109B Hi, I'm using this gate driver to control a half bridge contains two N-MOSFET, my MOSFET is powered by 36V, so my HO should be at least 46V to totally turn the MOSFET at on state, besides, my LO should be 12V. I don't understand…
    • Resolved
    • Answered

  • LM5109B: LM5109BMA/NOPB : Please verify schematic

    Resolved
    Part Number: LM5109B Other Parts Discussed in Thread: UCC21220 Hi, We are using LM5109BMA/NOPB for BLDC motor driving application. The Motor is 60V/5A rated. We are using three LM5109BMA/NOPB chips to drive three half bridges. We are facing high…
    • Resolved

  • RE: LM5109B: What is the main difference between LM5109A and LM5109B?

    Bjornar, LM5109B has an increased UVLO functionality that holds the high side FET off when the main VDD supply voltage falls before the HB (bootstrap) voltage decays. The relevant tables are found in the LM5109B's datasheet, in the Start-Up and UVLO…
    • Answered

  • LM5109B: How much maximum gate charge can be apply on output of IC?

    Resolved
    Part Number: LM5109B Other Parts Discussed in Thread: LM5109 Hi, I have LM5109B and i want to select MOSFET for this.What is maximum rating of MOSFET gate charge(Qg) as i want to drive MOSFET through LM5109B. Can i connect MOSFET with Qg=400nC on…
    • Resolved

  • LM5109B: Problem in Driving MOSFET in application of 3-Phase BLDC MOTOR Driver

    TI Thinks Resolved
    Part Number: LM5109B Please go through attached schematic in which LM5109BMA/NOPB is used as gate driver for Three-Phase bridge.IRF530PBF is used as MOSFET Switch. PCB-BLDCDRVR-1918-1B-01.pdf Problem Definition: Supply Get Shorted while applying…
    • Answered

  • LM5109B: 3-Phase Inverter supply shorts due to glitch on HS pin upon increasing supply

    Resolved
    Part Number: LM5109B Other Parts Discussed in Thread: CSD19534KCS Hi, We are using LM5109B with IRF3415 mosfets to drive a BLDC. Without connecting the BLDC when we increase the inverter supply above 18VDC the supply gets short circuit. After…
    • Resolved

  • [FAQ] LM5109: Differences between LM5109A and LM5109B

    Part Number: LM5109 There have been questions regarding the differences between the LM5109A and LM5109B 100V high-side low-side drivers. The pinout, available packages and parameter specifications are the same for the LM5109A and LM5109B. So the LM5109B…
    • Answered

  • LM5109B: About power supply sequence

    Resolved
    Part Number: LM5109B Hello Team, Even if power is supplied to HB in ten or more seconds after power input to VDD, is there a problem with device? Best regards, Kato
    • Resolved

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