{"title":"具有ACP控制的快速瞬态和欠/超调抑制DC-DC降压变换器","authors":"Jing Lin, J. Shiau, Chien-Hung Tsai","doi":"10.1109/VLSI-DAT.2014.6834887","DOIUrl":null,"url":null,"abstract":"In this paper, a novel state ACP (adaptive current position) is presented, which allows Buck converter to achieve fast load transient response. The PWM (pulse width modulation) and PFM (pulse frequency modulation) modes increase light-load efficiency and maintain good regulation over a wide load range. When the load rapidly changes from light to heavy, ACP can enhance the transient response, to minimize the settling time and suppresses under/overshoot voltage. Unlike other system, the proposed controller can operate without current-sensor. ACP can force the inductor current to catch up with load current quickly. Switch on high-side power MOS a period of time then change to PWM state. By using the information from pseudo current roof, the exact on-time and off-time at different Vin can be calculated. Also, we can speculate the time to execute ACP without current-sensor. Simulation and experimental results demonstrate the superior dynamic response over that of a conventional digital Buck converter.","PeriodicalId":267124,"journal":{"name":"Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test","volume":"236 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A fast transient and under/overshoot suppression DC-DC Buck converter with ACP control\",\"authors\":\"Jing Lin, J. Shiau, Chien-Hung Tsai\",\"doi\":\"10.1109/VLSI-DAT.2014.6834887\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, a novel state ACP (adaptive current position) is presented, which allows Buck converter to achieve fast load transient response. The PWM (pulse width modulation) and PFM (pulse frequency modulation) modes increase light-load efficiency and maintain good regulation over a wide load range. When the load rapidly changes from light to heavy, ACP can enhance the transient response, to minimize the settling time and suppresses under/overshoot voltage. Unlike other system, the proposed controller can operate without current-sensor. ACP can force the inductor current to catch up with load current quickly. Switch on high-side power MOS a period of time then change to PWM state. By using the information from pseudo current roof, the exact on-time and off-time at different Vin can be calculated. Also, we can speculate the time to execute ACP without current-sensor. Simulation and experimental results demonstrate the superior dynamic response over that of a conventional digital Buck converter.\",\"PeriodicalId\":267124,\"journal\":{\"name\":\"Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test\",\"volume\":\"236 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-04-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/VLSI-DAT.2014.6834887\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Technical Papers of 2014 International Symposium on VLSI Design, Automation and Test","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/VLSI-DAT.2014.6834887","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
本文提出了一种新的自适应电流位置状态ACP (adaptive current position)，使Buck变换器能够实现快速的负载瞬态响应。PWM(脉冲宽度调制)和PFM(脉冲频率调制)模式增加了轻负载效率，并在宽负载范围内保持良好的调节。当负载从轻到重快速变化时，ACP可以增强暂态响应，最大限度地减少稳定时间，抑制欠/过调电压。与其他系统不同的是，该控制器可以在没有电流传感器的情况下运行。ACP可以迫使电感电流快速赶上负载电流。开关高侧功率MOS一段时间，然后切换到PWM状态。利用伪电流顶的信息，可以计算出不同电压点的准确通断时间。此外，我们还可以推测在没有电流传感器的情况下执行ACP的时间。仿真和实验结果表明，该方法的动态响应优于传统数字Buck变换器。
A fast transient and under/overshoot suppression DC-DC Buck converter with ACP control
In this paper, a novel state ACP (adaptive current position) is presented, which allows Buck converter to achieve fast load transient response. The PWM (pulse width modulation) and PFM (pulse frequency modulation) modes increase light-load efficiency and maintain good regulation over a wide load range. When the load rapidly changes from light to heavy, ACP can enhance the transient response, to minimize the settling time and suppresses under/overshoot voltage. Unlike other system, the proposed controller can operate without current-sensor. ACP can force the inductor current to catch up with load current quickly. Switch on high-side power MOS a period of time then change to PWM state. By using the information from pseudo current roof, the exact on-time and off-time at different Vin can be calculated. Also, we can speculate the time to execute ACP without current-sensor. Simulation and experimental results demonstrate the superior dynamic response over that of a conventional digital Buck converter.
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