LTC3777- Feasibility check for a new design

Hi,

I would like to use LTC3777 controller with a bridge rectifier for a 5VAC to 150 VAC input and output of 14VDC/8A. Please confirm on the use of the part LTC3777 for this else, please suggest a part or design note for this purpose.

Thanks,

Ajmal T

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  • Hi Fil,

    Thanks for the suggestion.

    It is observed that, when I am giving supply from a full bridge rectifier with high value capacitor at output, the LT8316 is giving Zero voltage output. But when supplying from a voltage source , it is working. I am doing this simulation in LTspice. Any idea?

    Regards,

    Ajmal T

  • +1
    •  Analog Employees 
    on Nov 22, 2019 3:44 AM 11 months ago in reply to ajmal.t@altran.com

    Hi Ajmal,

    I'm not an expert of this part but if there is high value capacitor at the output, it is possible that converters hits current limit during start-up due to inrush. If you intend to use LT8316 & needs support, I recommend that you create separate EZ thread using the product in the title line so the apps engineers can help you further.

    Note that you want to do high voltage input supply and it is dangerous. It should be done with someone who has experience.