Patent ID: 8885362
Filing Date: 2014-11-11
Classification: H02M,H05B,Y02B

Abstract:
1. A switching converter having an input terminal and an output terminal, comprising: a first switch having a first terminal, a second terminal and a gate terminal, wherein the first terminal is coupled to the input terminal of the switching converter; a second switch having a first terminal, a second terminal and a gate terminal, wherein the first terminal is coupled to the second terminal of the first switch; a third switch having a first terminal, a second terminal and a gate terminal, wherein the first terminal is coupled to the second terminal of the first switch and the first terminal of the second switch; a controller coupled to the gate terminals of the second and third switches, wherein the controller is configured to control the ON and OFF switching of the second and third switches; and a first capacitor having a first terminal and a second terminal, wherein the first terminal is coupled to the second terminal of the third switch and the controller to provide a power supply voltage for the controller, the second terminal is grounded; wherein the switching converter charges the first capacitor through the first and third switches in a first working state, and transfers energy to a load through the first and second switches in a second working state.