::I need to write a control loop. Help please ..just give me some hints to=
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::write tha control loop...

Xavier,

Wasn't my reply to your main thread of any help?

If you want to control a SMPS, then the BLDC app note I listed might be of=
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help or even look at one of the control loops that Microsoft use.

This is sample code for a Buck/Boost convert for a Pic33F
http://ww1.microchip.com/downloads/en/DeviceDoc/Buck-Boost%20Converter%20PI
Ctailplus%20SourceCode%20for%20dsPIC33FJ64GS610.zip

This is for a buck converter with PID control
http://ww1.microchip.com/downloads/en/DeviceDoc/CE021_PID_SMPS_GUI_14aug09.
zip

This is for a PWM SMPS using dsPics.
http://ww1.microchip.com/downloads/en/DeviceDoc/CE020_Std_PWM_120309.zip

This is for a dsPic SMPS with ADC
http://ww1.microchip.com/downloads/en/DeviceDoc/CE031_ADC_Trig_PWM_120309.z
ip

Colin

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