| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a switching power supply control circuit capable of switching a plurality of control systems by a relatively simple operation, without increasing the circuit scale.SOLUTION: A switching power supply control circuit 100 includes an ADC 110 for converting analog first DC voltage Vo1 or second DC voltage Vo2 into a digital value, a digital compensator 120 for processing and compensating the gain and phase of a digital value inputted from the ADC 110 digitally, and a pulse generation circuit 130 for generating a drive signal S on the basis of a digital signal processed by the digital compensator 120. The pulse generation circuit 130 outputs a control system selection signal M as the drive signal S in response to an on/off signal E.</p> |
