| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a technique for securing the stability of an output voltage value.SOLUTION: Switching control is performed according to a feedback voltage which is a voltage fed back from an output voltage and a comparison result between a composite voltage, including a derivation voltage derived based on an input current, and a reference voltage. The reference voltage is set according to the peak value of the input current. This enables the elimination of an error amplifier provided on a feedback loop path, which enables the elimination of a phase compensation circuit. Also, a time required to select an element such as a capacitor in the phase compensation circuit becomes unnecessary, which enables remarkable reduction of man-hour required for circuit design. Further, input currents included in the composite voltage and the reference voltage come to having an equal value, so that a voltage difference between the output voltage and a target voltage can be reduced.</p> |
