Signal generation circuit capable of preventing false triggering and improving speed of comparator

• Main Authors: WANG TAO, XIANG XINGMING, ZHEN JIANYU, LIU HUAN, ZHOU JUE, ZHU ANKANG, SUN SHIQIANG, LI FEIYU, CHEN JUNTAO
• Format: Patent
• Language: Chinese; English
• Published: 29.12.2023
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; PULSE TECHNIQUE

The invention belongs to the field of power supply control, and particularly discloses a signal generation circuit capable of preventing false triggering and improving the speed of a comparator, and the signal input end of a current signal superposition circuit inputs a slope current and an output voltage and a fixed current of an error amplifier in a DC/DC system; a superimposed current signal output by the current signal superimposed circuit, a detection signal of a gate logic potential of the upper power tube and a feedback signal output by the PWM comparator are input into a signal input end of the current-to-voltage circuit; a superposed signal output by the current-to-voltage circuit, a signal at the joint of the source electrode of the upper power tube and the inductor and a detection signal of the logic potential of the grid electrode of the upper power tube are input into the signal input end of the PWM comparator, and the PWM comparator outputs a control signal and a feedback signal. The PWM compara