Patent ID: 8200445

Claim:
A method of analyzing power supply noise of an electronic circuit board, the method comprising: calculating, by a device, a reflected voltage of power supply noise at a semiconductor device mounted on the electronic circuit board, based on an impedance characteristic between a power supply and ground of the electronic circuit board and an impedance characteristic between a power supply and ground of the semiconductor device; analyzing, by the device, power supply noise of the electronic circuit board, based on the reflected voltage of the power supply noise at the semiconductor device; extracting power supply and ground information and electronic components inclusive of at least a capacitor and the semiconductor device connected to the power supply and ground from design information of the electronic circuit board; creating an analytical model of power supply noise by connecting a model of the impedance characteristic of the extracted electronic component to a mounting position on a board model of the electronic circuit board; calculating propagation of power supply noise flowing from the semiconductor device to the electronic circuit board in the analytical model of power supply noise; and analyzing behavior of propagation of power supply noise in the electronic circuit board, based on each power supply noise of the semiconductor device mounted on the electronic circuit board.