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Modified Salas Mosfet Shunt Reg
Modified Salas Mosfet Shunt Reg
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Old 17th December 2008, 11:35 PM   #1
mach1 is offline mach1  Australia
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Default Modified Salas Mosfet Shunt Reg

I just drew up this version of the Salas shunt reg using parts I have in my bin. Can anyone see any obvious errors?
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Old 18th December 2008, 04:37 AM   #2
Salas is offline Salas  Greece
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Modified Salas Mosfet Shunt Reg
Why not? Those 10M45S enhancement mode FETs with error amplifier which acts like depletion mode FET, plus the Dmos to set Vref, are all very well thought out choices. Since you have the parts give it a go. I would. I can't simulate it right now, plus I don't know if I have the models, so I can't tell you more on error possibilities. I just don't see striking errors on first read. You know those devices better than most of us. You will make it work. Certainly.
In the back of my mind I would be a bit afraid it may prove prone to easy oscillations with some cabling or loads, or layout and probing, due to the wide BW Cascodes. Also I would be curious until first listen to know what those 1K RdsON Dmos achieve. Naah...It will do fine.
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Old 18th December 2008, 05:36 AM   #3
mach1 is offline mach1  Australia
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Thanks - I'll heat up the iron tonight !
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