考虑PWM延迟的模拟与数字PWM DC-DC变换器统一频域模型

In this article, the effect of the pulsewidth-modulation (PWM) delay on the stability of PWM dc–dc converters is analyzed. First, a unified frequency-domain model considering the PWM delay is proposed. Based on the proposed model, the physical mechanism of the PWM delay is the sampling characteristic of the modulation process rather than the digital controller. As the analog PWM (APWM) and digital...