Patent ID: 9746892
Date: 2017-08-29
CPC Classifications: G06F,H02M

Claim:
1. A switching power source apparatus comprising: a switching output circuit operable to generate an output voltage from an input voltage, an error amplifier operable to generate an error voltage in accordance with a difference between a predetermined reference voltage and the output voltage or a feedback voltage corresponding to the output voltage, a clock signal generation circuit operable to generate a clock signal, a slope voltage generation circuit operable to receive an input of the clock signal to generate a slope voltage, a delay circuit operable to delay the clock signal to generate an on-signal, a PWM [pulse width modulation] comparator operable to compare the error voltage and the slope voltage with each other to generate an off-signal, a logic circuit operable to receive inputs of the on-signal and off-signal to generate a pulse width modulation signal, and a switch drive circuit operable to receive an input of the pulse width modulation signal to generate a drive signal for the switching output circuit, wherein the delay circuit gives a delay, which is identical or equal to an internal delay of the PWM comparator, to the clock signal to generate the on-signal.