| 摘要 |
<p>Provided is a switching power source device in which fluctuation of the switching frequency can be suppressed without impairing the advantages of a non-linear control system. A switching power source device (1) is provided with: switching control units (13, 14, 16, 17) of non-linear control type that generate an output voltage (OUT) from an input voltage (IN) by performing ON/OFF control of switching elements (11, 12) in accordance with the results of comparing a feedback voltage (FB) and reference voltage (REF); and an ON time setting unit (15) that monitors switching voltage (SW) appearing at one end of the switch terminals (11, 12), and sets the ON time (Ton) of the switching element (11) in the switching control units (13, 14, 16, 17) based on the duty of the switching voltage (SW).</p> |
