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Old 7th December 2007, 02:06 AM   #1
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Join Date: Sep 2007
Default Half Bridge Reference

hey guys,

Ok I have been reading about Class D amplifier and how the output is connecting either full or half bridge.

If I go half bridge for example does that mean when using a gate driver it will need to be reference to the most negative rail, right.

For example if my PWM is 10Vpp and my most negative rail is -40, then I would have to level shift this 10Vpp at -40V. Basically at -40V I would have the 10Vpp.


But I don't understand how this would an input to the gate driver. since I would need a minimum of 3.3V logic for input.

I"am confused
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