| 摘要 |
PURPOSE: To realize energy conservation by improving the utilization efficiency of power in a DC-DC converter connected to a plurality of power supply sources. CONSTITUTION: Switching elements 2, 4 are connected between DC power sources 1, 3 and the coil 9 of a DC-DC converter. When the power source 1 is connected, the element 2 is selected, on or off driven by a DC-DC controller 51, and the other switching element 4 is turned off. On the other hand, when the power source 1 is deviated, the element 4 is driven on or off, and the element 2 is turned off. Thus, the utilization efficiency of the power is improved without using an interference preventing diode, and energy conservation can be realized. |
