Patent ID: 8536930
Filing Date: 2013-09-17
Classification: H03F,H03H,H03K

Abstract:
1. A switching circuit comprising: a switching element that has a first terminal and a second terminal, and is driven by a pulse signal to switch a conduction state between the first terminal and the second terminal; a power source section that supplies a voltage to the first terminal of the switching element; a load circuit that is connected in parallel with the power source section; a passive circuit section that is connected between a connection point between the power source section and the load circuit, and the first terminal of the switching element, and suppresses a current flowing from the connection point to the switching element at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse signal; and a resonant circuit section that is connected between the passive circuit section and the connection point, and resonates at the frequency of N times.