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Showing 42 results View by: Thread Post Sort by
    Answered
  • TPS54140A: About R-C snubber in Split-Rail power supply

    teritama
    teritama
    Resolved
    Part Number: TPS54140A Hi team, We use this device for Split-rail power supply(Vin=15V, Vout=±12.5V) referenced slva369a. And we plan to add R-C snubber to parallel Voneg side diode to dump out the ringing. There is two questions. 1. Is it okay…
    • Resolved
    • 17 days ago
    • Power management
    • Power management forum
  • Answered
  • TPS54140A: Difference between TPS54140 and TPS54140A

    Takuya Terada
    Takuya Terada
    Resolved
    Part Number: TPS54140A Hi Team, could you tell me difference between A and non-A version? best regards, Takuya
    • Resolved
    • over 1 year ago
    • Power management
    • Power management forum
  • Answered
  • TPS54140A: About the absolute rating of the EN terminal

    Y.Ottey
    Y.Ottey
    Resolved
    Part Number: TPS54140A Dear TI Team When I carried out WEBENCH under the following conditions, the following circuit came out. Vin = 4.75-32V Vout = 3.75V Iout = 1.5A At this time, if you check the voltage applied to the EN terminal from the voltage dividing…
    • Resolved
    • over 1 year ago
    • Power management
    • Power management forum
  • Answered
  • TPS54140A: Thermal resistance for four-layers board

    Kuramochi Tadahiko
    Kuramochi Tadahiko
    Resolved
    Part Number: TPS54140A Other Parts Discussed in Thread: LMR33620 , Hi, My customer requests the thermal resistance on the four-layers board condition. Does anyone have it? Best Regards, Kuramochi
    • Resolved
    • over 1 year ago
    • Power management
    • Power management forum
  • Answered
  • TPS54140A: TPS54140A

    user6378693
    user6378693
    Resolved
    Part Number: TPS54140A Other Parts Discussed in Thread: TPS54140 I download TPS54140 Unencrypted PSpice Transient Model in the web and simulated in LTspice. After I analyze the circuit, there are some error. I set the switching frequency to 220kHz. But,…
    • Resolved
    • over 1 year ago
    • Power management
    • Power management forum
  • WEBENCH® Tools/TPS54140A: TPS54140A error in feedback resistor

    Lin_Charles
    Lin_Charles
    TI Thinks Resolved
    Part Number: TPS54140A Tool/software: WEBENCH® Design Tools Hi team, I am using webench to design power from below specs, Vin=10.8-28V, Vo=5V/1A, the feedback resistor is 56.2k//10k. For internal voltage reference is 0.8V, I think the resistor should…
    • over 2 years ago
    • Power management
    • Power management forum
  • Answered
  • TPS54140A: Evaluation board

    na na78
    na na78
    Resolved
    Part Number: TPS54140A Other Parts Discussed in Thread: TPS54140EVM-429 , , TPS54140 Hi Is it enough to evaluate TPS54140A using TPS54140EVM-429? Because there is no EVM for TPS54140A. BestRegards
    • Resolved
    • over 2 years ago
    • Power management
    • Power management forum
  • RE: TPS54140A: Ripple in very small load operation

    Toshiya Asai
    Toshiya Asai
    > 1) TPS54140 and TPS54140A should have samilar output ripple perfromance . There is just Enable threshold improvement in the A version . I think thers's a trivial difference of behavior in very small load. > you can use lower inductance value and…
    • over 3 years ago
    • Power management
    • Power management forum
  • Answered
  • TPS54140A: Current trough inductor used for formula 8 and 9

    pls_tell_me
    pls_tell_me
    Resolved
    Part Number: TPS54140A Hello Can someone tell me which current I can use for formula 8 and 9. Is the inductor current IL the same as the wanted current out? If I would use formula 12 To calculate the current I need the frequency result from formula 8 and…
    • Resolved
    • over 3 years ago
    • Power management
    • Power management forum
  • Answered
  • RE: TPS54140A: Vout Ripple in case of a small Load (pulse skip mode)

    Katelyn Wiggenhorn
    Katelyn Wiggenhorn
    Resolved
    Hello, Thank you for sharing your schematic. As Robert said, this may be okay. You will want to verify the stability of this design for your range with loop response measurements. You can also use the circuit calculator tool in the product folder to…
    • over 3 years ago
    • Power management
    • Power management forum
>

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