Mosfet

A MOSFET has a source, drain and gate. To identify the pins on a given part you need to look at a data sheet. There's typically one common way of connecting them (e.g. a TO-220 package almost always puts the drain on the middle pin and the tab, for heat sinking), but it's not universal.

Shottkey diodes are fast, and they tend to have a lower forward drop for the current than regular silicon diodes. They're also more expensive and hard to get in high reverse-voltage ratings, but you can't have everything.

45V/16A is one honkin' big diode! You could parallel multiple lower current diodes if you wired a small resistor in series with each one to insure current balancing, but you may run into other problems doing that. Perhaps you could post the part number of the required diode and someone here could help you find it.

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Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" gives you just what it says.
See details at http://www.wescottdesign.com/actfes/actfes.html

Thanks. I have got the data sheet now.

Can I use one half of a MBR20100CT Schottky 100V 20A Barrier rectifier? These are reasonable price too.

R

"20 amp total (10 per diode leg)". Look at the marketing fluff to feel good, look at the data sheet to see if the part will work.

Given that the diodes are well matched thermally, you may be able to connect them in parallel, but I'd want to experiment with it a bit before I really trusted it. You should also check to see if you need heat sinking.

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Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" gives you just what it says.
See details at http://www.wescottdesign.com/actfes/actfes.html

Thanks. I wonder why I did not think of running them in parallel. The data sheet shows it as two diodes sharing a cathode on pin 2 with nothing else in the package.

R