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  • TPS54541 Fco calculation

    Resolved
    Hi Team, I am trying to calculate the correct components for the compensation circuit. I use the formulas to calculate Fco1 and Fco2 but see no formula to calculate Fco (Sections 8.2.1.2.10 of the datashee t). How is Fco calculated? It is used to…
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  • RE: TPS54541 Fco calculation

    Resolved
    Fco is a user input. I suggest somewhere between 20 kHz to 80 kHz. Alternately, you can use webench to calculate all that for you.
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  • TPS54541 - About frequency fold back

    Resolved
    Hi Team, I understand that the oscillator frequency is divided by 1, 2, 4, and 8 as the FB pin voltage falls from 0.8 V to 0 V. So, my understanding is as follows. -fDIV=1 at VFB ≧ 0.6V -fDIV=2 at 0.6V > VFB ≧0.4V -fDIV=4 at 0.4V > VFB ≧0…
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  • TPS54541, limitation of Cout ESR

    TI Thinks Resolved
    Other Parts Discussed in Thread: TPS54541 Dear Specialists, My customer is considering TPS54541. He is confirmed WEBENCH, and has a question for Cout ESR. According to the datasheet, a ceramic capacitor is possible to use Cout. It is not depended…
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  • Supply current for TPS54541

    Resolved
    Other Parts Discussed in Thread: TPS54541 The datasheet for the TPS54541 gives supply currents for shutdown and operating but not switching, but what is the supply current when it's switching and in regulation? Thanks, Scott
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  • RE: TPS54541 inverting power supply filtering

    John, could you give me a part number for a -5.25V / 4A linear regulator with good ripple rejection? But if I want to use a filter (e.g. pi-filter) on the output voltage, where would you add it? What about the "ground" (negative output voltage in…

  • Can TPS54541 be connected in parallel to get 10A output current?

    Other Parts Discussed in Thread: TPS54541 , TPS54620 We are using a TPS54541 on a card to convert to 12V. We are expanding the card's capability and will draw more current. Can we double up two TPS54541 in parallel to get 10A output current? If so,…
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  • TPS54541 and LM22678, output voltage waveform is incorrect.

    Resolved
    Other Parts Discussed in Thread: TPS54541 , LM22678 Dear Specialists, My customer is confirming TPS54541 and LM22678 with WEBENCH. Vin:DC18-32V Vout:DC12V 5A for motor power, 4A startup( a few ms), 2A steady state, 100mA idle state. At the first…
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  • RE: TPS54541 simulation does not work in inverting mode

    Resolved
    Hello John, thanks for the information. So I can stop trying ... Would be great if TI could rework this model to enable inverted buck boost simulation. Regards, Niels
    • Answered

  • TPS54541 and/or TPS54341 - About behavior when the output is shorted.

    Resolved
    Other Parts Discussed in Thread: TPS54541 , TPS54341 Hi Team, Our customer would like to know about current limit of TPS54541 and/or TPS54341. If the output of this device is shorted at the following conditions, can this device prevent the destruction…
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