PCB LAYOUT OPTIMISATIONAN576 APPLICATION NOTE PCB LAYOUT OPTIMISATION INTRODUCTION Protection requirements are becoming more and more well known and are often defined by rules or standards. To satisfy these requirements, there is, in the majority of cases, a standard solution or a dedicated product. However, knowledge of the disturbances and the use of suitable protection devices are not sufficient in themselves to solve the problem. In many applications, the correct design of the PCB layout is essential for success. Figure 1. Classical protection circuit Track B Track A I DEVICE TO BE PROTECTED DISTURBANCE SOURCE VCL P INFLUENCE OF THE PROTECTION LOCATION The circuit presented in Figure 1 shows the classical approach for the protection location. Here the protection device (see Note 1) is located close to th……