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@ericfont

ericfont/circuit-20260630-0152.svg

Created June 30, 2026 05:50
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try to move PWM DSM's noise filter pole up as high as possible, even higher than PWM rate
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@ericfont

ericfont commented Jun 30, 2026

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sim

image

@ericfont

ericfont commented Jun 30, 2026

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image

@ericfont

ericfont commented Jun 30, 2026

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Unfortunately, above isn't quite working as PWM, but is just like plain DSM, cause the noise filter pole is too high. So maybe should take leech book advice and not have the pole above the PWM rate.

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ericfont commented Jun 30, 2026

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sim with 400kHz sampling and pole below that

image image

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ericfont commented Jun 30, 2026

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attempt 48kHz sampling:

image

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