hai,
I have only little experiance in practical power electrinics. I want to design a DC-DC converter. The input to the ckt is -48V 5A DC .. i want to make a +12V 5A DC from that.. can we use a DC-DC chopper circuit for that or what are the other possibilities to make a 12V from -48V . please help me..
Linear has something very like this as an example for one of their switcher chips. Go see if you can find it. They explain quite a lot about it and even give you PCB layout suggestions.
Do you need to regulate the +12V?
A regulating dynamotor is not likely to be a good idea here.
try linear.com LT1683, it is transformer isolated, will need beefing up a bit for 5A. and I did find a spredsheet for calculating the values
martin
After the first death, there is no other. (Dylan Thomas)
conversion from 48 to 12V is very common. you might find it very economical to get a pre-made converter.
Jason
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