| 摘要 |
PROBLEM TO BE SOLVED: To provide a power conversion device capable of suppressing variation in, for example, an input current even if a delay occurs in, for example, current detection means.SOLUTION: A DC-DC converter device 1 includes a mask circuit 134 and a mask signal generator 138. The mask signal generator 138 generates and outputs a mask signal during a predetermined time interval including the time before and after an output timing of a reference signal. The mask circuit 134 forces to set an output voltage of an input-current detection unit 133 to 0 V during a mask time. For this reason, comparators 135a and 135b can set an output of a reset signal to a low level during the mask time. Thus, a PWM signal generator 137b and a driving circuit 139b are synchronized with the reset signal and can cause a switch not to turn off during the mask time. For this reason, a switching operation different from the original operation, which occurs due to a delay of, for example, the input current detection unit 133, can be suppressed, thereby suppressing variation in, for example, an input current even if the delay occurs. |
