how to hold the pwm power voltage stable?

[jigdo]

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!

 

[sefton]

I think it would be easier to use analogue

 

[Davood Amerion]

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

Rgards Amerion

 

[spikeyang]

310V?My god,it's beyond my experience.The high Voltage scared me a lot.