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View all- Baums AZaznova N(2008)Power optimization of embedded real-time systems and their adaptabilityAutomatic Control and Computer Sciences10.3103/S014641160803007342:3(153-162)Online publication date: 27-Jul-2008
Adaptive on-chip power supply with robust one-cycle control technique
Pages 394 - 399
Abstract
In this paper, an integrated adaptive output switching converter is proposed. The design uses a one-cycle control for fast line regulation and a single outer loop for load regulation and fine tuning. A switched-capacitor integrator is introduced in the one-cycle control to obtain positive integration with a single positive power supply, allowing a standard low-cost CMOS fabrication process. To improve the efficiency, a dynamic loss control technique is presented. HSPICE Simulations are performed with transistor models from TSMC 0.35μm N-well CMOS fabrication process. With a supply voltage of 3 V, a voltage ripple of less than 15 mV is measured. The maximum efficiency is 92% with a load power of 475 mW. The converter exhibits a tracking speed of 2 μs/V for both start-up and reference voltage transitions. The recovery time for a 20% load change is approximately 2.6ms. The overall design exhibits superior system robustness to battery perturbations, noise and process variations.
References
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F. Ichida et al, "Variable Supply Voltage Scheme with 95% Efficiency DC-DC Converter for MPEG-4 Codec," IEE Int. Symp. Low Power Electronics, 1999, pp 54--59.
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T. D. Burd et al, "A Dynamic Voltage Scaled Microprocessor System," IEEE J. of Solid-State Circuits, Vol. 35, Nov. 2000, pp 1571--1580.
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K. Smedley, S. Cuk, "One-Cycle Control of Switching Converters," IEEE Trans. Power Electronics, Vol. 10, Nov. 1995, pp 625--633.
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D. Ma, Wing-Hung Ki, and Chi-Ying Tsui, "An Integrated One-Cycle Control Buck Converter With Adaptive Output and Dual Loops for Output Error Correction," IEEE J. of Solid-State Circuits, Vol. 39, No. 1, Jan. 2004, pp 140--149.
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Index Terms
- Adaptive on-chip power supply with robust one-cycle control technique
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Published In
October 2006
446 pages
ISBN:1595934626
DOI:10.1145/1165573
- General Chairs:
- Wolfgang Nebel,
- Mircea Stan,
- Anand Raghunathan,
- Program Chairs:
- Joerg Henkel,
- Diana Marculescu
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Publication History
Published: 04 October 2006
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ISLPED06: International Symposium on Low Power Electronics and Design
October 4 - 6, 2006
Bavaria, Tegernsee, Germany
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Overall Acceptance Rate 398 of 1,159 submissions, 34%
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View all- Baums AZaznova N(2008)Power optimization of embedded real-time systems and their adaptabilityAutomatic Control and Computer Sciences10.3103/S014641160803007342:3(153-162)Online publication date: 27-Jul-2008
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