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  • LM5008A: Unencrypted Model on LTSPICE XVII Simulation Error

    TI Thinks Resolved
    Part Number: LM5008A Hello I am using the unencrypted model of LMR5008 buck converter on LTSPICE XVII. When i run the simulation, i encounter the same problem where it states "u1:v8: requires a minimum of 5 parameters. Only 3 specified." Can…
    • Answered

  • LM5008A: LT Spice model

    Resolved
    Part Number: LM5008A Other Parts Discussed in Thread: LM5008 , Hello all, After importing the Model of LM5008A "LM5008_TRANS.LIB", see the header below, I get an error with V8. This seems to be a Pulse-Voltage source: V8 U6 0 PULSE 0 1 100N LTSpice…
    • Resolved

  • LM5008A: switching frequency

    TI Thinks Resolved
    Part Number: LM5008A Dear Team The customer use equation (1) to calculate the switching frequency. But different from the value of capture's waveform. Could you help explain the different frequency? The spec is : Vin=54V，Vo=3.3V、Io=122mA、L=330uH…

  • LM5008A: Always voltage on the output (0,6V)

    Part Number: LM5008A Hi, I'm using the LM5008AMM in a battery. It provides 3.3V for MCU. When turned on, everything is working correctly. 3.3V are provided. My problem is: When turning it off, there is always 0.65V on the output. And therefore we have…

  • LM5008A: Bad voltage regulation and high switching noise

    Part Number: LM5008A Other Parts Discussed in Thread: LM5008 We are using a LM5008A circuit to step down 48V to 12V in our design. That 12V is then used by two linear regulators (UA78M05, UA78M33) to generate our 3.3V and 5V rails. We are running into…

  • LM5008A: NOPB Switch Node Question

    TI Thinks Resolved
    Part Number: LM5008A Dear team Customer have some question, could you give some recommend? We found the following problems when measuring Switch nodes. As shown in the attachment, glitch will occur under full load, but no glitch occurs under light load…
    • Answered

  • LM5008A: Component blows up (from dv/dt?)

    Resolved
    Part Number: LM5008A Other Parts Discussed in Thread: LM5008 Hi WIthout pre-charge before connecting, the component blows up above above a certain input voltage (the input pin burns up, and/or top cover burns up close to input pin). Output voltage instantly…
    • Resolved
    • Answered

  • RE: LM5008A: Device not starting up

    Resolved
    Hi Ankit, We have used the QuickStart Calculator as you suggested, and almost all the components is within the recommended values. The biggest difference is with the inductor, where we use 270uH and the calculator suggest a minimum of 666uH. With the…

  • WEBENCH® Tools/LM5008A: WEBENCH® Tools/LM5008A: Too much Input Capacitance?

    TI Thinks Resolved
    Part Number: LM5008A Other Parts Discussed in Thread: LM5008 , , LMR36006-Q1 , LMR36506-Q1 , LMR36503-Q1 Tool/software: WEBENCH® Design Tools Here's the power supply design I am working on, which will be used in 12V or 24V vehicles (there will be a TVS diode…
    • Answered

  • LM5008A: Max voltage on SW pin

    Resolved
    Part Number: LM5008A Goodday In the datasheet at the section absolute max ratings is written SW to GND (Steady State) -1V Can you tel me what the momentary max rating is on this pin. If I measure in my circuit i see a value witch is approx 1.2V, can you…
    • Resolved

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