help with designing a power supply

[Fragrance]

Hi

In those days i am planing to design a digital power supply almost work done but i have problem with current controlling through PWM here i have share to type of design one is based on POT working fine as required.
but the other design which i have modded to work as digital power control and current in this design voltage control working fine no problem but when i adjust the current out start flickering may be some thing wrong with my current control topology and one can help me to find out error in my design

Fragrance

 

[Ogu Reginald]

I am using a mobile to browse and I can't open the rar file now but I have downloaded it. I will look at it later but before i give you a feedback, please check the datasheet of LM317 to see if there are such designs.

 

[ZASto]

@Fragrance:
not everybody has Proteus installed. Can you post your circuits in a more convinient format? (pdf, png, jpg, gif ...)
Try to find a schematic based on LM723 and LM741 (yes the oldie ). You can use your PWM1 for voltage regulation and PWM2 for current limiting. Beware that I prefer microcontrollers with 2 independent HPWM outputs.

 

[Fragrance]

@Fragrance:
not everybody has Proteus installed. Can you post your circuits in a more convinient format? (pdf, png, jpg, gif ...)
Try to find a schematic based on LM723 and LM741 (yes the oldie ). You can use your PWM1 for voltage regulation and PWM2 for current limiting. Beware that I prefer microcontrollers with 2 independent HPWM outputs.

ok here you go

with pwm

working

regards
Fragrance