A Two-Stage Boost-Buck Converter with Intermediate Bus Voltage Control Scheme for Li-Ion Battery Powered Applications
Konferenz: Intelec 2013 - 35th International Telecommunications Energy Conference, SMART POWER AND EFFICIENCY
13.10.2013 - 17.10.2013 in Hamburg, Deutschland
Tagungsband: Intelec 2013
Seiten: 6Sprache: EnglischTyp: PDF
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Autoren:
Saad, Mohamed; Shawky, Ahmed; Ahmed, Emad M. (APEARC, Aswan University, Aswan 81542, Egypt)
Nour, Yasser; Orabi, Mohamed (APEARC, Aswan University, Aswan 81542, Egypt )
Inhalt:
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.