| 摘要 |
A switching power source circuit includes a first reactor having coils L1-1 and L1-2 connected in series, a second reactor connected in series with the first reactor, a series circuit connected with a DC power source and including the first reactor, the second reactor, a capacitor C1, a diode D1, and an output capacitor, a switching element Q1 connected between a connection point of the coils and the DC power source, a series circuit including a switching element Q2 and a capacitor C2 and connected to a connection point of the coils and to a connection point of the capacitor C1 and diode D1, a reactor L2 connected between a connection point of the capacitor C1 and diode D1 and the DC power source, and a controller controlling ON/OFF of the switching element Q2 so that the switching element Q1 carries out zero-volt switching when turned on. |
