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    • 19. 发明授权
    • Method for dynamically switching analyses and for dynamically switching models in circuit simulators
    • 用于动态切换分析和在电路模拟器中动态切换模型的方法
    • US08959008B2
    • 2015-02-17
    • US13023559
    • 2011-02-09
    • Michael Claus OlsenJie DengTerence B. HookMadan Mohan Naga Nutakki
    • Michael Claus OlsenJie DengTerence B. HookMadan Mohan Naga Nutakki
    • G06F17/50
    • G06F17/5022G06F17/5036
    • Performing a transient analysis with a compact FET model that is predominantly intended for DC analysis, such as an IDDQ leakage model, to enable toggling logic states in sequential logic circuits that cannot otherwise be examined in a DC analysis. An embodiment enables examining the DC or AC conditions of any logic state of any logic circuit in a DC or AC analysis, and additionally, it eliminates a potentially long execution time of a transient analysis with a DC model. Further solved is the present need to run two simulations and to maintain two netlists in order to overcome being unable to toggle certain logic states in the DC analysis. The invention achieves the aforementioned in a single simulation with a single netlist that calculates the DC operating circuit conditions with a model A on the fly at predetermined times or in certain logic states, during a transient analysis with a model B.
    • 使用主要用于直流分析(例如IDDQ泄漏模型)的紧凑型FET模型进行瞬态分析,以便能够在不能在DC分析中检查的顺序逻辑电路中切换逻辑状态。 一个实施例能够检查DC或AC分析中任何逻辑电路的任何逻辑状态的DC或AC条件,此外,它消除了具有DC模型的瞬态分析的潜在长的执行时间。 进一步的解决是目前需要运行两个模拟并且维护两个网表,以克服在DC分析中不能切换某些逻辑状态。 本发明在具有单个网表的单个模拟中实现上述,在单个网表中,在模型B的瞬态分析期间,在预定时间或在某些逻辑状态下,用模型A计算直流运行电路条件。