how to hold the pwm power voltage stable?

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jigdo

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The pwm power is a part of my project.Now ,I have a problem:how to hold the pwm power voltage stable? My method as a feedback control:

first: down the voltage (pwm power stabler voltage 310V)
second: use a A/D sample the low voltage,transfer the result to DSP,then
the DSP adjust the pwm's the proportion between high level and low level to make power voltage up or down.


Thank you!
 

I think it would be easier to use analogue
 

Hi;
you can use analoge way or digital one ( which you use).
I dont know what is you problem!

Rgards Amerion
 

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