Patent ID: 8332190
Filing Date: 2012-12-11
Classification: G06F

Abstract:
1. A circuit simulator comprising: an electric circuit network input unit that inputs an electric circuit network that indicates a connection relation associated with a plurality of elements which make up a semiconductor integrated circuit; a heat circuit network input unit that inputs a heat circuit network which is a heat equivalent circuit associated with the plurality of elements; and a simulation unit that executes an electric circuit simulation for the semiconductor integrated circuit based on a first element temperature, a first voltage value, a first current value, and a thermal resistance value, which have been set for each of the plurality of elements as initial conditions, with reference to the electric circuit network supplied from said electric circuit network input unit and the heat circuit network supplied from said heat circuit network input unit, wherein said simulation unit calculates a first heat generation temperature for each of the plurality of elements, caused by the amount of self-heat generation of said each element, based on the first voltage value, first current value, and thermal resistance value of said each element, calculates a second heat generation temperature caused by the amount of heat flowing from the other element into said each element based on the first voltage value and first current value of the other element and the thermal resistance value of said each element, calculates a second element temperature of said each element based on the first and second heat generation temperatures and the first element temperature of said each element, and calculates a second voltage value and a second current value at said each element at the second element temperature based on previously given data indicative of temperature dependency of said each element.