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本文提出了一种12-28V输入至0.6-1.8V输出的比值可调Dickson开关电容转换器,采用双模式相位失准操作,实现了93.1%的峰值效率,解决了USB PD标准下点负载电源转换器对宽输入电压范围、高效率和小型化的需求。
Rui P. Martins1,2, Pui-In Mak1 University of Macau, Macau, China University of Lisboa, Lisbon, Portugal 1 2 The USB PD standard for powering portable computing devices is continually advancing. The Adjustable Voltage Supply (AVS) mode enables supply-end adjustments to fulfill load requirements, optimizing energy efficiency. Power converters for point-of-load supply need to accommodate a wider input voltage range while maintaining high efficiency, compact size, and ample load capacity. Various hybrid switched-capacitor (SC) topologies [1–7] have been proposed to address higher input voltages and ensure superior performance at higher voltage conversion ratios (VCRs). Many designs incorporate one or more power inductors along the primary output current path, such as flying-capacitor (CF) multi-level, hybrid Dickson [7], and DSD-based converters [5, 6]. Consequently, the inductors dominate system volume due to conduction loss
Qiaobo Ma1, Yang Jiang1, Huihua Li1, Xiongjie Zhang1, Man-Kay Law1,