Patent ID: 9543839
Date: 2017-01-10
CPC Classifications: G05F,H02M

Claim:
1. A voltage stabilizing circuit comprising: an input capacitor having a first terminal and a second terminal; a booster circuit having an input side coupled across said input capacitor, and an output side; a first output capacitor having a first terminal and a grounded second terminal that are coupled to said output side of said booster circuit; a series connection of a first power switch and a second output capacitor coupled between said first and second terminals of said first output capacitor, said first power switch having a first terminal coupled to said first terminal of said first output capacitor and a second terminal, said second output capacitor having a first terminal coupled to said second terminal of said first power switch at a common node and a second terminal coupled to said second terminal of said first output capacitor; a second power switch coupled between said first terminal of said input capacitor and said common node; and a parallel connection of a third power switch and a current limiting resistor coupled between said second terminal of said second output capacitor and said second terminal of said first output capacitor;