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    Closed: Re: PMOS load switch circuit issue

    My circuit is working well after thorough testing uptill now with quite low heat dissipation. Thnx for ur kind inputs.
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    Closed: Re: PMOS load switch circuit issue

    Kindly guide me how much max power then this mosfet can bear with a heat sink?
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    Closed: Re: PMOS load switch circuit issue

    Ah I see. I am using a 1.2 x1.4cm heat sink.
    You mentioned the "12W can be too much for this FET". Isnt the Mosfet IRF5210 rated for 200W at room temperature? So it should handle this? No? Correct...
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    Closed: Re: PMOS load switch circuit issue

    Its mentioned here:
    https://www.onsemi.com/pub/Collateral/AND9093-D.PDF

    Also the 120 ohm load draws 0.4A and that is a stable current value, not inrush. The simulations show inrush of 0.3 to 0.4A...
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    Closed: PMOS load switch circuit issue

    Hi all. I'm working on a load switch circuit that drives a capacitive load of 1000uF and a GAN transistor in parallel. The schematic of the circuit is attached. The input voltage is 50V and the Pmos...
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    Closed: Re: LTC 4367 Transistor burning Issues

    Yes exactly. Thats why i left the source pins open.
    Now coming back to the issue, any suggestions?
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    Closed: Re: LTC 4367 Transistor burning Issues

    Source connection is left open as this transistor is connected in a back to back common source configuration as shown below.155093
    Also whose maximum rating are you talking about? The transistors? I...
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    Closed: LTC 4367 Transistor burning Issues

    Hi all.
    I'm using LTC4367 for reverse polarity, OV and UV protection. I'm using the FDMD84100 Dual N channel Mosfets and the input voltage is 50V. However, when connected without any load, the...
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    Closed: Re: SG3525 based Push-Pull converter Feedback

    Thankyou. I'll design it without the isolation and then discuss with you. :)
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    Closed: Re: SG3525 based Push-Pull converter Feedback

    I wanna give this output to a microcontroller based SPWM Full bridge Inverter circuit. So, do I require isolation or not?
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    Closed: SG3525 based Push-Pull converter Feedback

    Hello Everyone.
    I am gonna design a Push-Pull dc dc converter converting 48V to 330Vdc based on the Tahmid's blog as below.
    132927

    My questions are:
    1) Do I have to use isolation in the...
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    Closed: Re: LC filter in the Sinewave Inverter

    Thankyou. :) Also, the inductance of the motor is 30mH. So, dont you think it will distort the waveform and drop hell of the voltag too? I am not regulating the dc dc stage right now either.

    - - -...
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    Closed: Re: LC filter in the Sinewave Inverter

    Success IT IS I was successfully able to make my project working again. The problem was not of the filter or anything. It was the unproper grounding in the building I'm working at. The ground is...
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    Closed: Re: LC filter in the Sinewave Inverter

    I am currently using this combination.
    130194
    I tried increasing the "C". But the output gets shortened dur to unknown reasons :/
    (Also, yesterday I couldnt get the same results either, that is,...
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    Closed: Re: LC filter in the Sinewave Inverter

    You're saying that Its okay attach a resistor in series? But It is dropping hell of output voltage :/
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    Closed: Re: LC filter in the Sinewave Inverter

    BREAKING NEWS: I connected a resistor in series with the inductor and observed output waveform across the load and capacitor. And BOOM. Got the sinewave. Does this mean the Inductor IS GETTING...
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    Closed: Re: LC filter in the Sinewave Inverter

    No I didnt disconnect the load. Also, I am testing the circuit now and still the problem is persisting :(
    Any more Ideas that you can share plzz?
    Also, do you know how to drive H-Bridge using the...
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    Closed: Re: LC filter in the Sinewave Inverter

    But why did it work in the first place then? Thats the real question isn't it?
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    Closed: Re: LC filter in the Sinewave Inverter

    Yes I tried the resistive load and it worked great before.
    Actually everything worked fine before. With the inductive fan I got the following waveforms.
    130071
    130072
    This was before it went...
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    Closed: FYP: LC filter in the Sinewave Inverter

    Hello All. I successfully completed the DC-DC converter stage getting 330VDC at the output (it was shortening and by increasing the duty cycle, its working now). Now the problem is coming at the...
  21. Closed: Re: smps output filter capacitor turning everything off

    Sorry for the late reply, was going through the testing phase. :/
    Here is what I've done in these 2 days.
    I double checked everything. There's no wiring fault. I solved the issue by replacing the...
  22. Closed: Re: smps output filter capacitor turning everything off

    I am not implementing the feedback right now. Only the main circuit is attached. :/
  23. Closed: Re: smps output filter capacitor turning everything off

    The diodes Im using are DSEI20-12A fast switching diodes.
    I already told you that whenever the output of the transformer is connected to the filter, the converter shuts down. Im still in shadows...
  24. Closed: Re: smps output filter capacitor turning everything off

    Here is my schematic of dc-dc converter. The output filter is RC based and C=1uF for now. Switching frequency is 25kHz. And the total duty cycle is 40%. Input rail dc voltage is 48VDC and output is...
  25. Closed: Re: smps output filter capacitor turning everything off

    okay I understood. So I should increase the duty cycle in small steps of say 5%? Is that what you're suggesting?
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