Tool/software:
BUCK power supply
Input voltage: 200V
Output voltage: 24V
PWM frequency: 20K
AD sampling triggered by PWM（20K），Because it is the soft start stage of power on, the equation D=Vo/Vin does not hold
May I ask what is the formula for calculating the duty cycle value when the reference voltage of the output voltage slowly increases at this time?
Is the output of PWM one cycle of PWM or is the inherent delay time from the output of BUCK circuit to AD sampling used as the adjustment cycle of PWM?
I personally think that there is a time delay when the voltage from PWM output to Vo output increases. What is the reason for this time delay?
Is this time delay used as a delay time for digital loop compensation?
thank you!
