Patent ID: 9281757
Filing Date: 2016-03-08
CPC Classification: H02M

Claim Text:
1. A voltage conversion device comprising: a first loop circuit that includes a first switching element; and a second loop circuit, wherein the first loop circuit and the second loop circuit include a common inductance element and a common loop portion having a noise reduction member arranged within the common loop portion, wherein the common loop portion includes a portion of the first and second loop circuits that overlap each other, wherein electric current alternately flows through the first loop circuit or the second loop circuit as the first switching element is turned on or off, a magnetic field that is formed when the first switching element is turned on and that penetrates through the first loop circuit and a magnetic field that is formed when the first switching element is turned off after the first switching element is turned on and that penetrates through the second loop circuit having the same direction, all elements that constitute the first loop circuit and the second loop circuit are arranged on the same surface of a substrate, and the second loop circuit is connected to a second direct-current power source, and the first loop circuit is connected to a first direct-current power source that has a voltage different from a voltage of the second direct-current power source.