Search tips
Showing 126 results View by: Thread Post Sort by
    Answered

  • Pspice model for TPS54040

    Resolved
    Other Parts Discussed in Thread: TPS54040 Dear ladies and gentleman, I have tried to simulate the model for the step down converter TPS54040 with Pspice and Orcad Capture. The lib- File I have downloaded doesn't work and doesn't look like a standard…
    • Resolved
    • Answered

  • Re: TPS54040 instability

    Resolved
    I doubt that this is a stability issue, but let me say that switcherpro can sometimes give marginal results with certain input parameters. In this case it has chosen only 10 uF output capacitance, which is less than I usually recommend. To further troubleshoot…
    • Answered

  • Re: TPS54040 application

    Resolved
    I would not add anything from Vin to COMP. Your best bet is appropriat input filtering.
    • Answered

  • Re: TPS54040 undervoltage lockout

    Resolved
    Yes there is quite a bit of variation on the start up enable. I don't think switchrpro addresses this at all. You would need to use the datasheet equations. If you need tighter control, the TPS54240 has tighter tolerance. The "consistent power up behavior…
    • Answered

  • Re: Need help on TPS54040

    Resolved
    The charge pump info is contained in SLVA444 application note. The alternate solution is to use a blocking diode as described in the encloosed ppt. 0714.TPS54160 low dropout.ppt
    • Answered

  • TPS54040 Inductor Value from SwitcherPro

    Resolved
    Other Parts Discussed in Thread: TPS54040 In SwitcherPro Desktop Version 3.11.5.2, selecting the TPS54040 and providing the following inputs: Vin_min: 23V Vin_max: 40V Vout: 5V Iout_max: 0.01A The designer calculates an inductor value of…
    • Resolved

  • Re: Multiple Schottky Diodes in TPS54040 Design

    OK, I can beleive that. I have never tried the catch diode, but I know for a fact if you pick an output capcitor that is not sufficient, it will suggest a larger quantity to meet the rating requirement. I bet teh software uses the same checking routine…
    • Answered

  • Re: TPS54140 as replacement for TPS54040?

    Resolved
    Yes, the TPS54140 is pin to pin compatible with the TPS54040. There is one difference that will affect your circuit--the "comp to switch transconductance" is different for the 2 parts. What this means is that your control loop response will change. I…
    • Answered

  • Simulation for DC-DC Regulator TPS54040 does not work

    Resolved
    Other Parts Discussed in Thread: TPS54040 4101.DC_DC_Regulator.zip Hello, When I simulate the TPS54040 I get the following error message "Operating Point Not Found". Attached is the circuit I am trying to simulate. Any help will be appreciated…
    • Resolved
    • Answered

  • Tina PSPICE model for TPS62120 and TPS54040

    Resolved
    Other Parts Discussed in Thread: TPS62120 , TPS54040 , TINA-TI Hello. I cannot simulate TPS62120 or the TPS54040 in my TINA spice simulator. I believe that the problem is because the TI library I downloaded from TI's web site is ENCRYPTED. I…
    • Resolved

Didn't find what you are looking for? Post a new question.