Patent ID: 9413261
Filing Date: 2016-08-09
CPC Classification: H02M

Claim Text:
1. A method of converting AC power to a DC output, comprising: providing a first LC circuit including a first current detector, a power supply, a first capacitor, a first inductor, and a first switch group including a first switch and a first diode that are connected in parallel, wherein the first switch group is connected in series with the first current detector, the power supply, the first capacitor, and the first inductor; providing a second LC circuit including a second current detector, a load, a second capacitor, and a second inductor; wherein the second LC circuit is connected to the first switch group in parallel; providing a second switch group including a second switch and a second diode that are connected in parallel, wherein the second switch group is connected to the first switch group in series through an intermediate node, and a smoothing capacitor and the second switch group are connected in series between ground and the intermediate node; and selectively opening and closing the first and second switches, in response to at least an input polarity of the power supply to provide a DC current to the load.