I was thinking what is the best solution to add a reverse current blocking on switching regulator. My first thought was to look for an ideal diode circuit but all of them were too much expensive. The cheapest solution was to put a simple diode but they've got significant amount of voltage drop. I thought to hide the diode's voltage drop inside the switching regulator. Connecting the feedback pin of regulator at the diode's cathode the Vo would be maintained to just at the desired set point.
- What are the pros and cons of this circuit?
- Is there a better solution?