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Old 21st July 2012, 06:34 PM   #1
Riff is offline Riff  Indonesia
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Default possible to achieve 1kw with uc3842?

possible to achieve 1kw with uc3842 on this scheme?
Skema n PCB gacun2 copy.jpg
help me...
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Old 21st July 2012, 08:36 PM   #2
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Yes, but you will need a gate driver between the 3842 and the power switches.
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Old 22nd July 2012, 12:20 AM   #3
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The UC3842 has lots of drive. But your topology looks like a flyback to me. It would have simple on and off operation for the transformer. This means only half of the flux swing of other topologies.

Typically flyback’s are used for cheap and dirty supplies of 100 watts and less.
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Old 22nd July 2012, 04:33 AM   #4
Riff is offline Riff  Indonesia
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Quote:
Originally Posted by sawreyrw View Post
Yes, but you will need a gate driver between the 3842 and the power switches.
whether you are referring to this scheme can be made 2 output drive?
if yes,can you guide me to build GDT for this?
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