首页|An Adaptive Voltage Scaling Buck Converter with Preset Circuit
An Adaptive Voltage Scaling Buck Converter with Preset Circuit
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维普
An Adaptive voltage scaling (AVS) buck converter with Preset circuit (P-AVS), which can adaptively scale the output voltage fast, is presented. The voltage scaling loop in the proposed Pulse width modulation (PWM) buck with P-AVS is divided into coarse scaling loop and fine scaling loop, which can regulate the reference voltage adaptively according to load status. The coarse scaling loop can set quickly a coarse value of reference voltage according to the operation frequency of the load by a preset block, and the fine scaling loop is designed to scale voltage finely. The proposed P-AVS buck converter, with 3.3V input and 2MHz switching frequency, is fabricated in a 0.13μm standard CMOS process. The output voltage and the frequency of the load are designed from 0.7V to 1.5V and 30MHz to 120MHz respectively. Compared with a typical AVS buck, the proposed P-AVS converter can save 17μs scaling up from 0.7V to 1.1V.
Adaptive voltage scaling (AVS)P-AVSCoarse scaling loopFine scaling loopPWM regulatorFast response
LUO Ping、WANG Dongjun、PENG Xuanlin
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State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
This work is supported by the National Natural Science Foundation of China
NETL
NSTL
万方数据
维普
