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Type: Posts; User: blazini36

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    Closed: Re: AC-DC power supply design

    Any suggestions as to a particular relatively simple IC? Right now I'm looking at UCC28180
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    Closed: Re: AC-DC power supply design

    Regarding the PFC concerns, this particular power supply is meant to work with a Servo drive that does not have it's own DC bus. It's a fairly common drive and I can certainly guarantee 90% of the...
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    Closed: Re: AC-DC power supply design

    Whether PFC is absolutely necessary or not, I'm not sure. I have used the setup of some caps with a rectifier and some contactors for over a year. Not that it's a bad idea, I'm just not sure I have...
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    Closed: Re: AC-DC power supply design

    I realize that the idea of the resistor or NTC in parallel with the triac defeats the purpose of the triac. The triac is there as the "switch" that turns on the power supply, running the current...
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    Closed: Re: AC-DC power supply design

    Something like this after the rectifier?
    https://www.digikey.com/product-detail/en/tdk-electronics-inc/B82622S0173L030/495-B82622S0173L030-ND/10413388
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    Closed: Re: AC-DC power supply design

    Hmm, how about putting the NTC in parallel with the triac rather than resistors,The NTC has the advantage of reducing it's own resistance if something goes wrong where the resistor remains a heater...
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    Closed: Re: AC-DC power supply design

    I was looking at power factor correction ICs briefly. Do you have any suggestions that are more specific?
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    Closed: Re: AC-DC power supply design

    Not really sure what I would use as an external power supply, again trying to keep everything self contained.

    If you omit the IGBT from the drawing there, the only actual issue with the DC bus...
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    Closed: Re: AC-DC power supply design

    Prefer not to use a relay if possible. If I were to use a relay the NTC has to go on the line side since I have found no PCB mount relays that can handle the DC voltage/current. Not using any...
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    Closed: AC-DC power supply design

    I'm trying to design a self contained DC bus power supply. Specifically it's for a 400v 2200w AC servo drive. Trying to get this all down on 1 PCB for simplicity. I've been using this drive for some...
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