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- Title
A Near-Threshold Voltage Startup Monolithic Boost Converter with Adaptive Sleeping Time Control.
- Authors
Liu, Lianxi; Zhou, Yiyang; Mu, Junchao; Liao, Xufeng; Zhu, Zhangming; Yang, Yintang
- Abstract
A novel near-threshold voltage startup monolithic boost converter is presented in this paper using an adaptive sleeping time control (ASTC) scheme for low-power applications. The proposed ASTC scheme can promote the power efficiency of the current-mode boost converter under light load by automatically adjusting the sleep time of the converter, and the converter's quiescent current drops down to 4A during the sleeping period. In addition, a new soft-start method is introduced to make the boost converter start up with a near-threshold input voltage. The proposed boost converter was fabricated in a standard 0.18m CMOS process and occupies a small chip area of 0.50mm. Experimental results show that the boost converter achieves the minimum 0.5-V startup voltage when the output voltage is set to 1.8V. After startup, the input voltage range can be expanded from 0.3V to 1.5V with a switching frequency of 1MHz. In addition, a peak efficiency of 94% and a minimum efficiency of 81% are measured at the 1.5-V input voltage as the load current ranges from 0.1mA to 100mA.
- Subjects
THRESHOLD voltage; IDDQ testing; LOW power radio; RADIO frequency; CONVERTERS (Electronics)
- Publication
Journal of Circuits, Systems & Computers, 2017, Vol 26, Issue 4, p-1
- ISSN
0218-1266
- Publication type
Article
- DOI
10.1142/S0218126617500633