| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively prevent an inductor current of a switching power supply from entering a continuous conduction mode (CCM). <P>SOLUTION: Generating a pulse width modulation signal using a circuit regulator allows control of selective input of power into the primary side of a switching power supply. The circuit regulator contains a synchronous timing pulse generator and performs time delay, timing pulse adjustment, and synchronous control signal processing for a pulse width modulation signal and a discharging time signal for the secondary side before output of a start pulse, and effectively controls pulse start time of the pulse width modulation signal accordingly. <P>COPYRIGHT: (C)2012,JPO&INPIT |
