| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply device for controlling output voltage or output current with high accuracy by reducing an output ripple and preventing a resonance phenomenon with floating inductance and floating capacitance. <P>SOLUTION: A power supply device comprising an insulation type DC-DC conversion part 5 having a switching part 51 and a non-insulation type DC-DC conversion part 8 having a switching element: calculates a pre-stage side control target value of a pre-stage side electric output value that is a value of voltage, current, or power output by the insulation type DC-DC conversion part 5 based on a post-stage side control target value of a post-stage side electric output value that is a value of voltage, current, or power output by the non-insulation type DC-DC conversion part 8; and performs on/off control of the switching part 51 so that the pre-stage side electric output value comes close to the pre-stage side control target value and performs on/off control of the switching element of the non-insulation type DC-DC conversion part 8 so that the post-stage side electric output value comes close to the post-stage side control target value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
