| 摘要 |
PROBLEM TO BE SOLVED: To obtain a non-insulated DC-DC converter with low noise that obtains a positive-polarity output voltage of a desired voltage by stepping up or down a voltage of an input power supply. SOLUTION: A DC-DC converter is composed of an input coil L1 serially connected between both ends of an input power supply E, an input capacitor C1 and a second intermediate coil Lm2, an output coil L2 serially connected between both ends of a load Ro, an output capacitor C2 and a first intermediate coil Lm1, a switching element S connected between a node (a) of the L1 and C1 and a node (b) of the C2 and Lm1, and a diode D connected between a node (d) of the C1 and Lm2 and a node (c) of the C2 and L2. COPYRIGHT: (C)2009,JPO&INPIT
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