AC/DC and Isolated DC/DC Power

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AC/DC and Isolated DC/DC Power

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isolated power supply
Related Posts

  • Forum Post: Variable output voltage, isolated power supply design question

    zhong Huo
    Hello, I need to design a isolated, variable ouput power supply. Input voltage is 12V, output voltage is 1V to 4V, output current is 3A. Any suggestion and help is very welcome. I think the isolated transformer is very important, Where I can order it? Thank you very much. in advance. Zhong
    on Sep 9, 2011

  • Forum Post: TPS55010 failure

    Gianpietro Favaro
    Hi all, we are testing some samples of TPS55010 and we experienced some problems due to the systematic failure of low side NMOS (?). At the moment we built 7 prototypes and all failed in the same way. Is there some reason for such instability? We are using the schematic indicated in the datasheet...
    on Oct 4, 2011

  • Forum Post: UCC35706 resonant forward convertor failure

    Sunil K Valsan
    Hi, I am Trying to make one DC to Dc convertor with UCC35706, strangely all the four devices I had is gone bad ie PIN 3 Vff shows zero Volt. The schmatic design is taken from another working design. Its resonant single switch forward convertor. Please help me to acertain if the device has gone...
    on Nov 17, 2011

  • Forum Post: TPS55010 small isolated Transformer

    Marcel Sowka
    Hi, I am searching an isolated transformer with a maximal height of 4.5mm for the TPS55010. In our application the TPS55010 is supplied by 3V3 or 5V and shall generate isolated 5V with a maximum load of 150mA. The proposed Wuerth transformer's size exceeds our height constraint (see TPS55010 specification...
    on Nov 21, 2011

  • Forum Post: Operating LM2588 at 140KHz

    Anemary Thomas
    Hello I am new to power supply design field. I am trying to operate LM2588 at 140 KHz. Can anyone please help me to find the exact Freq. Adjustment Resistor and the values for compensation components. The values given in the datasheet are for 100KHz.
    on Dec 15, 2011

  • Forum Post: UCC28070 in interleaved <<Flyback>> topology - Possible?

    Geir Frode Raanes S���rensen
    I need to power some servo motors, each rated 10 Amps at a nominal 156 VDC. Motor control will ensure that worst case will never be allowed to happen simultaneously, but I still need to come up with a 150 VDC power rail capable of say 15 Amps. That is an awful lot of power to produce in one strike. I...
    on Jan 18, 2012

  • Forum Post: Interleaving two UCC28950 with UCC39002 and Si8503

    CWilson
    Hi everybody! We're currently designing a Full Bridge ZVS 3400W converter with two UCC28950 (coupled as master/slave interleaving). For current sensing we're using the Si8503 (recommended by a TI employee in another post). The output of the Si8503 is amplified in order to match the input...
    on Feb 1, 2012

  • Forum Post: Re: 800W resonant converter using UCC25600

    CWilson
    I've designed a LLC with almost the same specs ;-) Power: 800W output Non-isolated: 85-264VAC (PFC UC28061) to 400VDC. Isolated: 400VDC to +/- 82VDC (165VDC from + to -) (LLC). Unregulated! fsw = 100kHz. I managed to get 510W out due to the lack of load resistors. I got around 97% efficiency for...
    on Feb 7, 2012

  • Forum Post: Feed-forward dc gain (LM25037)

    Ben Robinson
    Hi All, I am working on a 12V to 48V feed-foward votlage mode push-pull converter with a LM25037 controller. I am trying to work out the dc gain to compensate the converter and here what I came up with: Total dc gain = Modulator gain + Transformer gain + Feedback Divider gain + Opto gain How...
    on Feb 20, 2012

  • Forum Post: Re: AC-DC power supply

    Ankur Tech
    Yes the voltage can vary from 18-24V , so automatically the current vary. Such that if the provided schematic having particular resistor & by changing it i can adjust my desired voltage. Regards, Ankur
    on Mar 9, 2012

  • Forum Post: lm5020 isolated flyback overcurrent

    David Knight
    I'm designing an isolated flyback dc-dc converter. My specs are 20-70 V input, 24V output @ 3A. I'm mostly done with schematic capture and layout, but have one issue to address before I finish and build boards. One requirement I have for my project is that the circuit go into hiccup...
    on Apr 2, 2012

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