Patent ID: 8239815

Claim:
A system for inspecting layout of a printed circuit board (PCB), the system comprising: a storage system to store a layout standard of the PCB; and at least one processor to execute one or more programs stored in the storage system, the one or more programs comprising: an executing module operable to search for a high side pin of a pulse width modulation (PWM) controller on the PCB, determine a metallic oxide semiconductor field effect transistor (MOSFET) connected to the high side pin on the PCB, and search for a coupling capacitor connected to the MOSFET; a calculating module operable to calculate a linear distance between a source pin of the MOSFET and a capacitor pin of the coupling capacitor, and calculate a trace distance between the source pin and the capacitor pin according to a signal path routing between the MOSFET and the coupling capacitor; a detecting module operable to detect if the linear distance and the trace distance accord with the layout standard stored in the storage system and if a capacitance of the coupling capacitor accords with the layout standard, and generate corresponding detection results; and the executing module further operable to record the detection results in a layout report.