CONTROL CIRCUIT OF DC/DC CONVERTER, POWER MANAGEMENT CIRCUIT, SSD, DC/DC CONVERTER

摘要

To provide a control circuit capable of changing output voltage Vat high speed, while suppressing self current consumption.SOLUTION: An error amplifier 310 generates an error voltage Vaccording to the error of the feedback voltage Vbased on the output voltage Vfrom a DC/DC converter 100 and a reference voltage V. A pulse modulator 320 generates a control pulse Saccording to the error voltage V. An auxiliary circuit 350 is enabled when dropping the output voltage Vfrom the DC/DC converter 100, compares a feedback voltage Vwith a ramp signal Vlowering with time, and sources or sinks an auxiliary current Ito the output of the error amplifier 310 according to the comparison results.SELECTED DRAWING: Figure 2