| 摘要 |
<p>Disclosed is a DC-DC converter, which is provided with: a DC-DC conversion device, which has switching elements (3a-3d) and an inductor (4), converts the voltage of an inputting direct current power supply (1) by driving the switching elements to turn on/off at predetermined switching frequencies, and which charges an electrical storage means (7); a current detecting means (5), which detects a current flowing in the inductor (4); and control means (8, 9), which transmit PWM (pulse width modulation) controlled on/off drive signals such that the electrical storage means (4) is charged with instructed predetermined charge power. The control means (8, 9) change the switching frequencies of the on/off drive signals to be transmitted to the switching elements corresponding to the current in the inductor (4), said current having been detected by means of the current detecting means (5).</p> |
