| 摘要 |
PURPOSE:To remarkably reduce power loss generated in the on/off control of a FET inserted as the one for reverse current prevention to a negative polarity output side and to quickly cope with the fault of a power source in the parallel operation of the power source to convert an input DC voltage to a desired output DC voltage by PWM. CONSTITUTION:In constitution to prevent reverse current from flowing by inserting the FET 6 to the output side of power source units 2-1, 2-2, a control voltage outputted from an output voltage control circuit 5 which controls an output voltage by the PWM of the power source units 2-1, 2-2 by the pulse width control of the PWM is detected, and the FET 6 can be turned on/off by a power source unit separation circuit 7. |
