Patent ID: 8374010
Filing Date: 2013-02-12
Classification: G09G,H02J,H02M,H03K,H05B,Y02B

Abstract:
1. A power supply circuit for receiving an input voltage to drive a first load and a second load, the power supply circuit comprising: a first switch circuit connected with the first load; a second switch circuit connected with the second load; a first power conversion circuit connected with the first load and the first switch circuit; a second power conversion circuit connected with the second load and the second switch circuit, the first power conversion circuit and the second power conversion circuit converting the input voltage into a driving voltage and transmitting the driving voltage to the first load and the second load, respectively, when the first switch circuit and the second switch circuit are conducted; and a phase delay circuit connected with the first switch circuit, the second switch circuit and a system circuit for generating a first delay signal and a second delay signal in response to a switch signal from the system circuit and transmitting the first delay signal and the second delay signal to control terminals of the first switch circuit and the second switch circuit, respectively, so as to make the first switch circuit and the second switch circuit be conducted or shut off, wherein the first delay signal and the second delay signal are converted into an enabling status from a disabling status at different time points so that the first switch circuit and the second switch circuit are conducted at different time points.