Switching power supply device, switching power supply driving method, and switching power supply drive program

摘要

An object of this invention is to provide the switching power supply device which can avoid that the noise of a specific frequency component becomes strong. The present invention analyzes a switching power supply that switches an input from a primary power supply and outputs it as a secondary power supply, and a frequency component of noise included in the output of the primary power supply or the secondary power supply. A switching power supply device comprising a noise frequency analysis device that switches the switching power supply at a frequency different from amplitude noise.