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Old 21st March 2007, 03:12 PM   #1
ka ming is offline ka ming  Hong Kong
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Default What diode shoud be used in 100KHz class D amplifier gate driving

I build my first Class D amplifer using gate driving IC IR2110, But I do not what type of diode should be used what is in series the driving output of IR2110 and parallel a resistor. The MOSFET used is IRF640N. and my amplifer is working at 100KHZ
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Old 21st March 2007, 03:27 PM   #2
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I'd use the good ol' 1N4933.

Or, get the 1N4936 (400V version) for all general power rectification needs at 1A and you only need to stock one P/N in your junk box. I have a roll of 50+ of these just for this reason.

1N4933
Switching diode
50V
1A
150nS switching times (MHz+ speeds)
Ct = 12pF @ 1MHz

http://www.fairchildsemi.com/ds/1N/1N4933.pdf
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