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LT8310 and LT4430

Hello everyone,

I am using the LT8310 and the LT4430 for an isolated 12V power supply. Input voltage is 24V. My setup is very similar to the one on page 33 in the datasheet, except for the transformer ratio - here I am using 1:1. With no load applied the output voltage is regulated fine to the desired 12V. When I start to apply a load e.g. 13.5 Ohms the output voltage drops to about 8.9V. Has anyone an idea what could cause this voltage drop?

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  • Hi, 

    The drop on the output voltage could be a result of a lot of factors. It could be due a layout issue, overcurrent on the output, compensation issue, etc.. For us to have a better understanding on your problem, it would be great if you could provide us some oscilloscope waveforms for the switch, Vin, Vo, Iin/Iout. Thank you. 

    Regards, 

    Fritz

Reply
  • Hi, 

    The drop on the output voltage could be a result of a lot of factors. It could be due a layout issue, overcurrent on the output, compensation issue, etc.. For us to have a better understanding on your problem, it would be great if you could provide us some oscilloscope waveforms for the switch, Vin, Vo, Iin/Iout. Thank you. 

    Regards, 

    Fritz

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