DEVICE AND METHOD FOR CHECKING PRINTED CIRCUIT BOARD POWER SOURCE ISOLATION

摘要

A checking unit includes a power net extracting means for extracting a power net with power attribution, which is segmented by a power-decoupling element, with reference to circuit design data of the printed wiring board; a parts number extracting means for extracting a parts number of a semiconductor integrated circuit which is connected to the extracted power net; a parts headcount calculating means for calculating a headcount of the extracted parts; a judging means for comparing the extracted parts headcount with a predetermined reference value; and a representing means for representing a name of the power net and the parts number of the semiconductor integrated circuit as an unprocessed location of power decoupling when the headcount is larger than the reference value, whereby inspecting quickly whether or not a power supply in use, which is shared by each of the semiconductor integrated circuits, by each of connectors or by both the semiconductor integrated circuit and the connector, is decoupled at higher frequencies by the power-decoupling element.