A Two-Stage Boost-Buck Converter with Intermediate Bus Voltage Control Scheme for Li-Ion Battery Powered Applications
Conference: Intelec 2013 - 35th International Telecommunications Energy Conference, SMART POWER AND EFFICIENCY
10/13/2013 - 10/17/2013 at Hamburg, Deutschland
Proceedings: Intelec 2013
Pages: 6Language: englishTyp: PDF
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Authors:
Saad, Mohamed; Shawky, Ahmed; Ahmed, Emad M. (APEARC, Aswan University, Aswan 81542, Egypt)
Nour, Yasser; Orabi, Mohamed (APEARC, Aswan University, Aswan 81542, Egypt )
Abstract:
In this paper, a novel boost-buck converter is proposed to replace the conventional four-switch buck-boost converter. The proposed converter utilizes a step-up switched-capacitor converter followed by a synchronous buck converter. The paper discusses the design of each converter in the two-stage boost-buck system. Simulation results have shown that the proposed converter operates at one mode most of the time, which avoid the transients due to non-smooth transition among multi-modes. The proposed boost-buck is capable of supplying a maximum load current of 0.7A for input range between 2.7V to 4.2V while capable of producing a wide output voltage that ranges between 0.7V and 90% of the double of input voltage.