Timing analysis considering temporal supply voltage fluctuation

2005 ◽  
Author(s):  
M. Hashimoto ◽  
J. Yamaguchi ◽  
T. Sato ◽  
H. Onodera
Keyword(s):  
Supply Voltage ◽  
Timing Analysis ◽  
Voltage Fluctuation

scholarly journals Timing Analysis Considering Temporal Supply Voltage Fluctuation

2008 ◽  
Vol E91-D (3) ◽  
pp. 655-660 ◽  
Author(s):  
M. HASHIMOTO ◽  
J. YAMAGUCHI ◽  
T. SATO ◽  
H. ONODERA
Keyword(s):  
Supply Voltage ◽  
Timing Analysis ◽  
Voltage Fluctuation

scholarly journals An Accurate and Efficient Timing Prediction Framework for Wide Supply Voltage Design Based on Learning Method

Electronics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 580
Author(s):  
Peng Cao ◽  
Wei Bao ◽  
Jingjing Guo
Keyword(s):  
Circuit Design ◽  
Supply Voltage ◽  
Timing Analysis ◽  
Instruction Set ◽  
Timing Verification ◽  
Static Timing Analysis ◽  
Static Timing ◽  
Threshold Voltages ◽  
Layer Stacking ◽  
Reduced Instruction Set Computer

The wide voltage design methodology has been widely employed in the state-of-the-art circuit design with the advantage of remarkable power reduction and energy efficiency enhancement. However, the timing verification issue for multiple PVT (process–voltage–temperature) corners rises due to unacceptable analysis effort increase for multiple supply voltage nodes. Moreover, the foundry-provided timing libraries in the traditional STA (static timing analysis) approach are only available for the nominal supply voltage with limited voltage scaling, which cannot support timing verification for low voltages down to near- or sub-threshold voltages. In this paper, a learning-based approach for wide voltage design is proposed where feature engineering is performed to enhance the correlation among PVT corners based on a dilated CNN (convolutional neural network) model, and an ensemble model is utilized with two-layer stacking to improve timing prediction accuracy. The proposed method was verified with a commercial RISC (reduced instruction set computer) core under the supply voltage nodes ranging from 0.5 V to 0.9 V. Experimental results demonstrate that the prediction error is limited by 4.9% and 7.9%, respectively, within and across process corners for various working temperatures, which achieves up to 4.4× and 3.9× precision enhancement compared with related learning-based methods.

Research on Timing of on-Chip Power Supply Noise with Analysis of Scientific Data Materials

2013 ◽  
Vol 310 ◽  
pp. 494-497
Author(s):  
Xiao Guang Li
Keyword(s):  
Power Supply ◽  
Supply Voltage ◽  
Timing Analysis ◽  
Logic Gates ◽  
Scientific Data ◽  
New Method ◽  
Power Supply Noise ◽  
Supply Noise ◽  
On Chip

Aiming at the problems of the influence in power-supply variations on timing analysis, this paper presents a new method to assign a supply-dependent hold margin based on analysis of scientific data materials, which describe a method to accurately characterize logic gates for the sensitivity of delay on supply-voltage variations, and then the method use a commercial microcontroller as a design example. Experiment results shows that the new method with analysis of scientific materials can get a good performance, even under the existing noise.

Inhibition of Double PWM Welding Power Supply Voltage Fluctuation of the Intermediate Links

2015 ◽  
Vol 734 ◽  
pp. 897-900
Author(s):  
Ji Fang Zhang ◽  
Wei Liu ◽  
Shi Wei Sun
Keyword(s):  
Control Method ◽  
Supply Voltage ◽  
Dynamic Performance ◽  
Power Source ◽  
Voltage Fluctuation ◽  
Power Supply Voltage ◽  
Feed Forward ◽  
Control Power ◽  
High Power Factor ◽  
Welding Power Supply

Double PWM welding power source can restrain the net side current harmonic. In order to suppress the transient when the intermediate DC link voltage fluctuation, generally adopt the method of increasing capacitor capacity, the disadvantages of this approach are: slow dynamic response, large volume, low service life, high cost of equipment. Therefore put forward a kind of double PWM welding power source based on feed-forward control power, using the power of feed-forward can effectively inhibit the intermediate DC link voltage fluctuation, based on the control method of the power system has a high power factor, good dynamic performance, simple and easy, good application prospect.

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