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Old 16th March 2005, 03:32 AM   #61
subwo1 is offline subwo1  United States
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Default Re: Help...help....

Hi lumanauw,
Thought number one is right. MOSFET drivers usually use hysteresis. So when it snaps the MOSFET on, the slow signal at its input turns it back off again. It happens many times in rapid succession during what should be one clean output switching period.

About your second thought, the basic topology is simply inherently slow, like you are thinking. Best Regards.
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Old 16th March 2005, 04:53 AM   #62
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Hi, Subwo1,

Do you know how to modify a basic totem pole (for mosfet driving) to become a "hysteresis" type totem pole?
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Old 16th March 2005, 05:15 AM   #63
subwo1 is offline subwo1  United States
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I guess that your MOSFET drivers are the non-inverting type. Try the inverting type, maybe.
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