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A 92.8 Efficiency Adaptive-On/Off-Time Control 3-Level Buck Converter for Wide Conversion Ratio with Shared Charge Pump Intermediate Voltage Regulator

机译:一个92.8%效率适应性开/关 - 时间控制3级降压转换器,具有共用电荷泵中间电压调节器的宽转换率

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This paper presents an efficient 3-level buck converter with cascode power stage and the proposed shared charge pump intermediate voltage (VMID) regulator. The proposed charge pump (CP) shares flying capacitor CFLY and power switches in the 3-level buck converter to generate VMID=VIN/2 achieving both small size and low loss. Also, conversion ratio (CR) VOUT/VIN is enhanced by using proposed adaptive-on/off-time (AOOT) control scheme. The control scheme switches between adaptive-on-time (AOnT) and adaptive-off-time (AOffT) mode according to the target CR. The proposed 3-level buck converter is implemented in a standard 0.25μm CMOS process showing 92.8% maximum efficiency and wide CR.
机译:本文介绍了一种高效的3级降压转换器,具有CASCODE电源级和所提出的共用电荷泵中间电压(V. mid )监管机构。所提出的电荷泵(CP)股票飞行电容器C. fly 和3级降压转换器中的电源开关生成V. mid = V. 中/ 2实现小尺寸和低损耗。此外,转换比(Cr)v out / V. 中 通过使用所提出的自适应开/关 - 时间(oot)控制方案来增强。根据目标CR,控制方案在自适应接通时间(AOL)和自适应关闭时间(AOFFT)模式之间切换。所提出的3级降压转换器以标准的0.25μmCMOS工艺实施,显示出92.8%的最大效率和宽Cr。

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