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<?Pub Dtl?>Three-dimensional electromagnetic methods are fundamental tools for the analysis and design of high-speed systems. These methods often generate large systems of equations, and model order reduction (MOR) methods are used to reduce such a high complexity. When the geometric dimensions become electrically large or signal waveform rise times decrease, time delays must be included in...
This paper proposed small signal models of digital VRMs. At first, the ADC's conversion delay and digital compensator's calculation delay are neglected. The focus is placed on the small signal model of the current sampling and the DPWM unit. It is shown that even with a ??fast?? controller, the current sampling and DPWM will still introduce some delay to the loop. Then the conversion and calculation...
Statistical static timing analysis(SSTA) is an emerging technique that addresses increasing process variation effects on circuit behavior for designs at 65 nm and below. SSTA offers a number of advantages over traditional corner based static timing analysis(STA), most notably it provides a more realistic estimation of timing relative to actual silicon performance. Accurate statistical timing analysis...
A novel methodology for accurate and efficient static timing analysis is presented in this paper. The methodology is based on finding a frequency domain model for the gates which allows uniform treatment of the gates and interconnects. It is shown that despite the highly nonlinear overall gate model, a frequency domain model of the gate with the model parameters, gate moments, as functions of the...
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