Current and charge estimation in CMOS circuits

: CMOS circuits have significant amounts of dynamic short-circuit (or through) current. This can be as large as 20% of the total in well-designed circuits, and up to 80% of the total in circuits that have not been designed carefully. This current depends strongly on the relative sizes of the pull-up to pull-down paths. We introduce the dynamic short-circuit ratio to model this parameter. This allows accurate estimation of currents including the dynamic short-circuit current, and also results in improved delay estimation. Accuracy is typically within 10% of circuit-level simulation while operating at the evel abstraction.

• Type: Conference
• Year: 1995
• Where: ASPDAC
• Authors: Sanjay Dhar, Dave J. Gurney
• Keywords: ASPDAC 1995, CMOS Circuits, Dynamic Short-circuit, Hardware, Well-designed Circuits