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模式转换SPICE模型中所含的“PWM开关”概念
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2010-06-03
王兰
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The “PWM Switch” concept included in mode transitioning SPICE models.
Vatché Vorpérian introduced his PWM Switch model concept in the 90’s where he
showed the invariant relationship between the a-c-p terminals when his model was dropped into numerous switching converters. Based on his work, several SPICE models have been made,however the current-mode control DCM case was never covered. Since Vorpérian did adopt two different configurations for the DCM and the CCM voltage-mode cases, the SPICE
implementation, such as the PSpice one, uses mode transition switches and seriously
complicates the model. Also, it does not exist any DCM-CCM for peak current-mode control
which is one of the most popular implementations.
Vatché Vorpérian introduced his PWM Switch model concept in the 90’s where he
showed the invariant relationship between the a-c-p terminals when his model was dropped into numerous switching converters. Based on his work, several SPICE models have been made,however the current-mode control DCM case was never covered. Since Vorpérian did adopt two different configurations for the DCM and the CCM voltage-mode cases, the SPICE
implementation, such as the PSpice one, uses mode transition switches and seriously
complicates the model. Also, it does not exist any DCM-CCM for peak current-mode control
which is one of the most popular implementations.
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