⚡ 本页包含 AI 生成的分析内容,仅供参考
这篇论文提出了一种工作于10/30MHz的宽占空比范围降压转换器,采用基于差分差分放大器(DDA)的Type-III补偿器,实现了快速的参考电压跟踪响应,适用于动态电压缩放(DVS)应用。
Dynamic voltage scaling (DVS) is an effective strategy in reducing the power consumption of a processor through adjusting its supply voltage at runtime. The power converter that drives the processor should have a wide output voltage range and fast reference-tracking response while maintaining a high efficiency. For such applications, inductive switching converters are suitable candidates [1-4]. To enhance the transient response and to reduce the size of off-chip components, DC-DC converters switching in the 10MHz range are studied recently. When switching at a high frequency, efficiency is compromised as the switching loss becomes significant. Moreover, comparator delay of a few ns causes serious over-charging and over-discharging of the ramp capacitor and the delay also limits the maximum duty cycle of the converter. A current-mode control needs an on-chip current sensor that would consume too much power
Lin Cheng, Yonggen Liu, Wing-Hung Ki
Hong Kong University of Science and Technology, Hong Kong, China