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High efficiency DC-DC

Discussion in 'Circuit Simulation & PCB Design' started by karas, Jan 21, 2017.

  1. karas

    karas New Member

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    need to figure what is the best time scheme I can use it for this circuit to achieve high efficiency (soft switching)
    This bidirectional DC-DC vin 60vdc and vout=600VDC Po=6Kw, so is there is any suggestion and also I need help to simulate it the circuit to figure the efficiency through simulation
    upload_2017-1-21_22-45-2.png
     

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  2. alec_t

    alec_t Well-Known Member Most Helpful Member

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    Welcome to ETO.
    If by 'soft switching' you mean the power FETs/IGBTs won't be switched fully on and fully off as quickly as possible, then the FETs will get hot and the circuit will have low efficiency.
     
  3. ronsimpson

    ronsimpson Well-Known Member Most Helpful Member

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    "soft switching" usually is about resonant switching. Where the turn on or turn off stress is very low. I have done designs where the FETs are turned on with 0V and 0I and turned off at 0V and full current.
     
  4. dave

    Dave New Member

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  5. karas

    karas New Member

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    can you please advice how can achieve soft switching, and can you draw the timing if you can please
     

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