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  • LM5106: PWM signal into ENable rather than IN pin

    TI Thinks Resolved
    Part Number: LM5106 Other Parts Discussed in Thread: LM5109 , LM5111 Compared to the LM5106, the LM5109 has two inputs - one for low side and one for high side. This means that it is "easily" possible to achieve three different drive options with the LM5109…

  • 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 3.3V mcu…
    • Answered

  • RE: LMG1205: Vdd present before Vin

    Resolved
    Hi Mamadou, thanks for your feedback! My customer has experienced this with LM5109 and we have released LM5109B to address this topic. Thanks!
    • 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 output…
    • Resolved
    • Answered

  • LM5109A: What might be causing my FET driver to blow up?

    Resolved
    Part Number: LM5109A Other Parts Discussed in Thread: LM5109 , I've got 3 LM5019A gate drivers setup to drive 3 half-H MOSFETs in a 3 phase BLDC driver. We've got 1A 12V supply shared between the LM5109. Logic levels inputs at 5V. 0Ohm output to gates…
    • Resolved
    • Answered

  • UCC27714: Design suggestion

    Resolved
    Part Number: UCC27714 Other Parts Discussed in Thread: DRV8412 , LM5107 , LMG1205 , , UCC27712 , UCC27282 , LM5109 Hello team, Customer application is a device that can run up to 48Vdc and near 50Amps. They use PWM controls to vary the voltage going to the…
    • Resolved
    • Answered

  • LM5109A: Minimum PWM frequency to keep HB (boot capacitor) charged

    Resolved
    Part Number: LM5109A Other Parts Discussed in Thread: LM5109 , , UCC27712 , LM5109B Hi I'm planning on using the LM5109A to drive a couple of low Rdson MOSFETs. The two MOSFETs are configured to drive a solenoid from automotive voltages. Solenoid manufacturer…
    • Resolved
    • Answered

  • LM5109A: BLDC motor controller problem

    Resolved
    Part Number: LM5109A Other Parts Discussed in Thread: LM5109 I am using LM5109A to drive IRFU3607(power MOSFET) in a BLDC motor controller. The PWM is generated through a microcontroller. The motor is a rewind motor that takes up the excess liner. The…
    • Resolved
    • Answered

  • RE: Unregulated (No Feedback) Isolated DC/DC Controllers

    Resolved
    Bryan, good to hear from you. A push pull controller can drive; push pull Half Bridge Full Bridge So the UCC28089 could work for your full bridge design. I made a sketch as an example. UCC28089 has 2 outputs, A B A drives top left, bottom right B drives top…
    • Answered

  • RE: LM5109A: BLDC driver failure

    Resolved
    Hi shuli, Peak drive current LM5109A is only 1 amp, datasheet AMR list any sink or source pulse width MAX? Notice 4R87 LO/HO @FET gate typically cause higher (peaks) than 1 amp in other gate drivers. Also notice very high voltage spikes on trapezoidal…

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