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Showing 22 results View by: Thread Post Sort by
    Answered

  • LM5109A: Unencrypted Spice Model

    Resolved
    Part Number: LM5109A Other Parts Discussed in Thread: LM5109 , , LM5109B Tool/software: Hello, Could you ,please, give us an encrypted spice model for LM5109 (we are using Simetrix simulator), or what value of source and sink resistors we can use in our…
    • Resolved

  • LM5109A: LM5109A

    TI Thinks Resolved
    Part Number: LM5109A Other Parts Discussed in Thread: LM5109 , LM5109B Hello Team, I am using the LM5109A Half Bridge Gate Driver in design. I need to calculate the current will souce by this device. I am doing the current calculation on VDD as well as High…
    • Answered

  • LM5109A: Charge pump operation at high temperature?

    Resolved
    Part Number: LM5109A Hi, we have a small inverter for a BLDC motor that uses the LM5109A. Commutation is six-step, and at temperatures above about 75C, the voltage on the charge pump capacitor is dropping about 3X faster than at room temperature. It is…
    • Resolved

  • LM5109A: When HI is always 5V, will HO keep high always?

    TI Thinks Resolved
    Part Number: LM5109A Hi Team, If HI is 5V always, will HO keep high level always? I just want to know if HI is always high, how could HO bootstrap?
    • Answered

  • LM5109A: Is there a pull-down to hold the upper FET off ?

    Resolved
    Part Number: LM5109A I am concerned about the possibility of an undefined state when both inputs are low for a long time. Under this condition, I wonder if FET or circuit leakage could pull the top gate positive slightly. If so, then the gate could eventually…
    • 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

  • LM5109A: BLDC driver failure

    Resolved
    Part Number: LM5109A Other Parts Discussed in Thread: LM5109 , LMG5200 Hello, I'm using 3 LM5109A to drive 3 phase 200W BLDC motor. I've included schematic with component details. VIN to the power MOSFET half bridge stage: 20V-33.6V (Battery power…
    • 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

  • 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

  • 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
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