{"title":"Design of a 5V-output boost DC-DC converter with improved protection functions for battery-operated devices","authors":"Yongsea Mo, Wonju Song, Ja-kyeong Lee, Yeji Han, Sandeep Kumar, Hanjung Song","doi":"10.1109/ICSSE.2017.8030978","DOIUrl":null,"url":null,"abstract":"In this paper, a step-up dc-dc converter for mobile device applications is proposed. The converter is operated with 1 MHz high switching frequency. The power stage of converter includes an inductor, an output capacitor, MOS transistors and feedback resistors for control loop. The control stage consists of an error amplifier, comparator, a ramp generator for PWM block, bandgap reference and soft start block with power transistor. Also, the circuit includes protection block such as over voltage protection (OVP), under voltage lock out (UVLO) and thermal shutdown (TSD) block. The proposed step-up converter has been designed with a 0.18 um CMOS process technology. Simulation results show an output voltage of 5 V with a ripple of 40 mV at the output current of 100 mA for an input voltage of 3.3 V.","PeriodicalId":296191,"journal":{"name":"2017 International Conference on System Science and Engineering (ICSSE)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 International Conference on System Science and Engineering (ICSSE)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICSSE.2017.8030978","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 7
Abstract
In this paper, a step-up dc-dc converter for mobile device applications is proposed. The converter is operated with 1 MHz high switching frequency. The power stage of converter includes an inductor, an output capacitor, MOS transistors and feedback resistors for control loop. The control stage consists of an error amplifier, comparator, a ramp generator for PWM block, bandgap reference and soft start block with power transistor. Also, the circuit includes protection block such as over voltage protection (OVP), under voltage lock out (UVLO) and thermal shutdown (TSD) block. The proposed step-up converter has been designed with a 0.18 um CMOS process technology. Simulation results show an output voltage of 5 V with a ripple of 40 mV at the output current of 100 mA for an input voltage of 3.3 V.
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