Method and an electronic system for soft recovery for switched mode power supplies

An electronic system comprising:

• an output voltage values detection circuit;
• a voltage recovery detection circuit;
• a timing pulse generator;
• a reference voltage values storing circuit;
• and
• a voltage comparator circuit,
• wherein the voltage comparator circuit output is connected to the reference voltage values storing circuit forming a feedback loop, and
• wherein the system is configured to:
• (a) detect a drop of an output voltage value FB using a drop detection circuit;
• (b) start the output voltage values FB recovery with the voltage recovery detection circuit using a current FB value stored as a voltage reference (Vref) start value from which the soft voltage recovery is to be made;
• (c) detect the start of the soft voltage recovery of the output voltage using the voltage recovery detection circuit;
• (d) generate a timing pulse using a timing pulse generator;
• (e) measure an FB value on a rising edge of the timing pulse and comparing the FB value with the Vref value using the voltage comparator circuit, and if the FB value is greater than the Vref value, storing the FB value and setting the FB value as a new Vref start value from which the recovery is to be made going forward;
• and
• (f) repeat step (d) and (e), after a preset time delay, until the FB value is less than or equal to the Vref for the FB value, thereby completing the soft voltage recovery.