David:
>>SMPS's use the Schottky's for the high switching speed, not so much
>>the lower forward voltage drop. Try using normal "slow" diodes in there
>>and you'll find it either won't work or will heat up & die really quick!

Brendan:
>Actually, that was a small portion of one of the labs.  But aren't there
>ultrafast diodes without the PIV and leakage limitations, but with a higher
>forward drop?

We use the MR852's in a switching power supply which are 200V (PIV)
and 3 Amps. They have a forward drop of around 1 Volt and a reverse
current of <100uA. They're much cheaper than the Schottky versions.
David...

___________________________________________
David Duffy        Audio Visual Devices P/L
U8, 9-11 Trade St, Cleveland 4163 Australia
Ph: +61 7 38210362   Fax: +61 7 38210281
New Web: www.audiovisualdevices.com.au
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