| 主权项 |
1. A multiple-output DC/DC converter comprising:
a converter including a transformer and a first surge absorbing circuit, wherein the transformer includes a first switch provided to a primary side and outputs a first voltage to a secondary side, and the first surge absorbing circuit is connected to the primary side of the transformer and absorbs a surge voltage formed at the first switch by a leakage inductance of the transformer; and a first energy converting circuit to receive output energy supplied from the first surge absorbing circuit and to output a second voltage, wherein the first surge absorbing circuit includes a first capacitor connected to the primary side of the transformer and a first diode, wherein the first energy converting circuit has a voltage between both terminals of the first capacitor as an input voltage, wherein the converter is a first flyback converter, and the first energy converting circuit is a second flyback converter, wherein a first voltage of the first flyback converter is n1*Vi/(1−D1), and an output of the second flyback converter is n2*Vc/(1−D2), n1 is a turn ratio of a transformer of the first flyback converter, Vi is an input power, D1 is a duty ratio of a first PWM signal for driving the first switch, and n2 is a turn ratio of a transformer of the second flyback converter, Vc is a voltage between both terminals of the first capacitor, and D2 is a duty ratio of a second PWM signal for driving a second switch of the second flyback converter. |
