| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC/DC converter that attains reduction in the installation space and cost for the device as a whole, by effectively utilizing components of the input system for backup. SOLUTION: A first input system 13 and a second input system 14 for backup are connected to a first output part 12, while being connected in parallel with each other. The first input system 13 is also connected to a second output part 29 in addition to the first output part 12 via an output switch SW2. The second input system 14 is provided with a step-up circuit 24, while its step-up coil is shared as a filtering coil when supplying power of the first input system to the second output part 29; the second input system is connectable to an auxiliary battery 22 via an input switch SW1. The second output part 29 is provided, while being branched from a connection point between the input switch SW1 and the step-up coil; and the output switch SW2 is provided between the connection point and the second output part 29. COPYRIGHT: (C)2009,JPO&INPIT
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