Patent ID: 8941962
Filing Date: 2015-01-27
Classification: H01L

Abstract:
1. A snubber circuit, comprising: at least one impedance component; a capacitor, having a first terminal and a second terminal, wherein the first terminal of the capacitor is electrically connected to a first terminal of the snubber circuit; and a bipolar junction transistor (BJT), wherein one of an emitter and a collector of the BJT is electrically connected to the second terminal of the capacitor, another of the emitter and the collector of the BJT is electrically connected to a second terminal of the snubber circuit, and a base of the BJT is electrically connected to the emitter of the BJT; wherein the at least one impedance component is connected to the capacitor in parallel, or connected to the emitter and the collector of the BJT in parallel; and the snubber circuit transfers leakage inductor energy to the capacitor rapidly and pushes energy of the capacitor back to a source for energy recycling.