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-   -   High side driver ckt using ocs (http://www.diyaudio.com/forums/power-supplies/90094-high-side-driver-ckt-using-ocs.html)

rejithcv 11th November 2006 04:45 AM

High side driver ckt using ocs
 
2 Attachment(s)
It seems to be a crazy idea. I thought of using optocouplers as high side drivers. How do it look like? Do reply pls....

Eva 11th November 2006 06:16 AM

Check it carefully, your schematic contains some catastrophic mistakes.

rejithcv 11th November 2006 06:20 AM

Can u point out the problems pls?

This circuit wont work in any way?



-Thanks

Eva 11th November 2006 06:44 AM

The high side is all wrong, it could drive a P-channel MOSFET instead but then both sides would turn on at the same time...

VEC7OR 11th November 2006 02:44 PM

Optoisolators are slow and one way or another you'll need some kind of bootstap power supply to charge/discharge the upper side, its easier with gate drive transformer or a gate drive IC.

rejithcv 11th November 2006 04:06 PM

A P-Channel is in no way a choice. Is there any modification to drive the N channel itself?

rejithcv 11th November 2006 04:10 PM

Optocoupler seem to be quite fast in this application . Im having a lack of ir21xx series ic here and I also hate winding transformers. This is the only reason for a sudden forced design...

Thnk u all..

DjLeco 15th November 2006 04:54 PM

Solve!
 
Here's the solving of your problem
http://www.a-and-t-labs.com/K6_Sw_Amp/index.htm

rejithcv 16th November 2006 02:52 AM

Hi dj,

I had the schematic of that amplifier. It also uses gate drive transformers unfortunately


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