|13th March 2012, 04:09 PM||#21|
Account disabled at member's request
Join Date: May 2006
Lme49830 is 16v, enough to drive any mosfets including high VT ones. Lm49811 Vbias ???
|14th March 2012, 01:11 PM||#23|
Join Date: Jul 2004
Location: Scottish Borders
3V when passing no output current.
When substantial output current is passed, the Gate to gate voltage is very much higher. This is due to the low transconductance of the Lateral FETs.
When high output current is used for the comparison, you will find that VFETs and LFETs have a similarly high gate to gate voltage requirement.
BJTs in this high current scenario do not require anywhere near those as base to base voltages. That's why the 830 was designed specifically for mosFETs in the output stage.
regards Andrew T.
Sent from my desktop computer using a keyboard
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