| 摘要 |
<p>When an input voltage detected by an input voltage detection unit (8) is greater than or equal to a first threshold, a control unit (6) controls a duty cycle to maintain a target current by feedback of an output current detected by an output current detection unit (4), and drives a DC/DC converter (2). When the input voltage falls below the first threshold due to the saturation of the DC/DC converter (2) and so forth, the control unit implements control to lower or maintain the duty cycle.</p> |
