NE555->optocouler->Mosfet driving problems

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patpin

Joined Sep 15, 2012
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Sorry for the confusion!:oops: -- "+1000" was merely 'shorthand hyperbole' signifying that I agree with @benta 's statement...



Please understand that good design will include a snubber (in any event), howbeit the criticality of such considerations is significantly 'eased' via selection of high (Max) Vds switch devices... -- For efficiency and reliability I suggest implementation of a non-dissipative snubber arrangement -- Granting that such elaboration is unnecessary for avocational applications...

But to answer your question::cool:
FWIW I use the IXFH20N100P in my X-Ray 'generator' designs (i.e. high power EHT PSUs) with good results -- Don't mind the ≈ 700mV (effective) saturated Rds;)
In many areas of power conversion I've 'moved on' to IGBT technology - Of course there are pros and cons either way...


Best regards and good luck
HP:)
Many thanks HP for sharing your experience!
I do not understand what you mean by non-dissipative snubber. No power converted in heat? Do you take a simple TVS or are there other components?
 
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