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Class D Switching Power Amplifiers and Power D/A conversion

Class D Design Issues
Class D Design Issues
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Old 24th June 2018, 11:31 AM   #121
nigelwright7557 is offline nigelwright7557  United Kingdom
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With gate driver circuits they usually have the mosfet switch off faster than the other mosfet switches on.
So your diode in the gate circuit should be the other way around.
Also I don't think you need the 470pf caps.
The gates already have high capacitance.
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Old 10th September 2018, 12:04 PM   #122
bogdan2011 is offline bogdan2011
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Quick question about IR2184 drivers. I can see that they have two versions of the chip, one has a common ground and the other seems to have a floating supply. Can I use Vss as the low signal ground (for the comparator, oscillator and audio) and COM as the separate, high voltage negative supply (say +-40V DC). I know I need level shifting for that, so does 21844 include them?Screenshot_Adobe_Acrobat_20180910-150002.jpeg
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Old 10th September 2018, 12:43 PM   #123
kees52 is offline kees52  Netherlands
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Quote:
Originally Posted by nigelwright7557 View Post
With gate driver circuits they usually have the mosfet switch off faster than the other mosfet switches on.
So your diode in the gate circuit should be the other way around.
Also I don't think you need the 470pf caps.
The gates already have high capacitance.
I did switch it that way yes, and it did well.

thanks.
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