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Class D Switching Power Amplifiers and Power D/A conversion

AD Vs BD Modulation in Class-D
AD Vs BD Modulation in Class-D
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Old 24th January 2019, 12:22 PM   #101
kees52 is offline kees52  Netherlands
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Join Date: May 2009
Location: Sprang-capelle Holland.
Quote:
Originally Posted by kASD View Post
You need cap between comparator inputs to force BD mode in post filter. Also place your CM inductor at the end of output towards load.
I get in ltspice simulation bd mode not right it is not visible just a fase shifted signal on both ends, when put a resistor over the outputs I get bd modulation but only see it in the current.

Maybe mine knowledge about ltspice is to limited.

I do now with triangles and offset it works fine, but these cause crossover unless I do overlap, this is critical.

regards
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Old 21st August 2019, 01:24 PM   #102
kees52 is offline kees52  Netherlands
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Join Date: May 2009
Location: Sprang-capelle Holland.
I sse this is old, I have in the meantime things done so it works, have now some experience.

regards
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