电工技术学报2017，Vol.32Issue(4)：58-65,8.
恒定导通时间控制Buck变换器的间隔周期斜率补偿方案
Every Other Cycle Ramp Compensation for Buck Converters with Constant On-Time Control
摘要
Abstract
A novel adaptive ramp compensation scheme is proposed to improve stability for Buck converters with ripple-based constant on-time control. Compared with traditional compensation approaches, the new method eliminates sub-harmonic oscillation more effectively by using digital control approach to generate "every other cycle" ramp compensation signal. Furthermore, the slope of ramp compensation is adaptively adjusted according to the off-time difference between two consecutive cycles. These features minimize the required ramp amplitude at steady state and effectively avoid over-compensation, and thus, reduce the impact on transient response performance of constant on-time control. Theoretical analysis and experimental results are provided to verify the proposed scheme.关键词
恒定导通时间控制/数字化控制/Buck变换器/次谐波振荡/斜率自适应补偿Key words
Constant on-time control/digital control/Buck converters/sub-harmonic oscillation/adaptive ramp compensation分类
信息技术与安全科学引用本文复制引用
徐杨,钱挺..恒定导通时间控制Buck变换器的间隔周期斜率补偿方案[J].电工技术学报,2017,32(4):58-65,8.
