Digitally-assisted constant-on-time dynamic-biasing technique for bandwidth and slew-rate enhancement in ultra-low-power low-dropout regulator
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摘要A digitally-assisted constant-on-time dynamic-biasing (COT-DB) technique has been proposed to enable significant enhancement in dynamic performances, while the average current consumption can be kept to ultralow level. This dynamic-biasing technique has a predefined magnitude and duration on biasing current boost, which is beneficial to estimate power budget in systems with finite energy source. The proposed technique has been applied to a low-dropout regulator (LDO) to demonstrate the effectiveness. Experimental results show that significant improvements in settling times during load-transients and line-transients are as much as 880x, while the current consumption is only 1.02A. In fact, for the same dynamic performances, the average current consumption of LDO with COT-DB technique can be as low as 0.39% of the LDO with heavy static biasing. The digitally-assisted implementation of the technique also allows robust augmentation of the technique onto almost all analog systems. Copyright (c) 2015 John Wiley & Sons, Ltd.
著者Guo JP, Ho M, Leung KN, Li GX
期刊名稱International Journal of Circuit Theory and Applications
出版年份2016
月份2
日期1
卷號44
期次2
出版社WILEY-BLACKWELL
頁次504 - 513
國際標準期刊號0098-9886
電子國際標準期刊號1097-007X
語言英式英語
關鍵詞constant-on-time; dynamic biasing; low-dropout regulator (LDO); slew-rate enhancement; ultra-low-power
Web of Science 學科類別Engineering; Engineering, Electrical & Electronic

上次更新時間 2021-21-02 於 01:11