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该论文提出了一种0.5μm CMOS工艺的四输出单电感降压型DC-DC转换器,采用自举开关驱动器技术,总输出电流达1.2A。解决了多处理器系统中多路独立供电需求与电感成本高的问题,实现了单电感多输出(SIMO)的紧凑型电源解决方案。
T. Peltola2, T. Teppo2 1 University of Pavia, Pavia, Italy National Semiconductor, Oulu, Finland 2 Minimizing power consumption in multi-processor systems requires the use of multiple supplies with a wide range of regulated voltages and currents. Since one inductor per DC-DC converter is expensive, there is an increasing interest in single-inductor-multiple-output (SIMO) DC-DC converters. Recent research results report a SIMO boost converter [1] and various boost or buck converters with two outputs [2, 3]. This 0.5μm CMOS system is a fouroutput, single-inductor buck converter with independent regulation of each output in the range 0 to (VDD – 0.500)V. The minimum and maximum total currents are 0.15 and 1.2A, respectively. The switching frequency is 3MHz and the external inductance is 1μH. Figure 24.6.1 shows the overall architecture of the four-output DCDC converter. It uses n- and p-channel switches (MP and MN) to
M. Belloni1, E. Bonizzoni1, E. Kiseliovas2, P. Malcovati1, F. Maloberti1,