← 返回 JSSC 论文列表JSSC 2015第12期Power Management65nmBuck Converter
A 4-Phase 3070 MHz Switching Frequency Buck Converter Using a Time-Based Compens
提出一种基于时间补偿的高频多相降压转换器,有效减少相位失配,提高效率。
65nm CMOS, 0.6V-1.5V输出, 30-70MHz开关频率, 87%峰值效率
高频降压转换器时间补偿多相生成器PID控制器高效率
▸创新点1:时间补偿多相生成器(MPG)通过精确匹配各相占空比,有效解决了多相Buck转换器中因相位失配导致的效率下降问题,无需复杂的电流传感和校准电路。
▸创新点2:时间补偿PID控制器(T-PID)采用时间域补偿技术,显著简化了传统模拟或数字控制器中的复杂电路设计,同时实现了高精度的输出调节和快速动态响应。
▸创新点3:无需复杂电流检测和校准电路,通过时间域补偿技术实现了主动电流共享,显著降低了系统复杂度和功耗,同时提高了转换效率(峰值效率>87%)。
▸创新点4:支持宽范围开关频率(30-70 MHz)和输出电压调节(0.6-1.5 V),在400 mA负载电流阶跃下, settling time < 0.6 μs,占空比失配<0.48%,展现了优异的动态性能和稳定性。
Abstract
A high switching frequenc y multi-phase buck con-
verter architecture using a time- based compensator is presented.
Efficiency degradation due to mismatch between the phases is mit-
igated by generating precisely matched duty-cycles by combining
a time-based multi-phase generator (MPG) with a time-based PID
compensator (T-PID). The prop osed approach obviates the need
for a complex current sensing and calibration circuitry needed to
implement active current sharing in an analog controller. It als