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Allegro PCB PDN AnalysisAs clock and data frequencies increase and high-speed systems become more densely populated, noise-free power delivery becomes a major challenge for PCB design. When fast switching devices change state simultaneously, power flow ripple propagates through the power delivery system as noise that varies with frequency. This noise can, in turn, disturb surrounding high-speed devices. To ensure that high-speed systems continue to deliver the required performance at these new levels, power delivery impedance has to be controlled over a wider range of frequencies. This is accomplished through careful consideration of the design of the switching power supply, bulk capacitance, ceramic capacitance, and power and ground plane-pairs over the frequencies of interest. Allegro PCB Power Delivery Network Analysis benefits both PCB Designers and electrical engineers with a tightly integrated PCB PDN analysis environment that runs on top of either PCB Designer or PCB SI environment and allows for rapid design modification and analysis iterations without having to go through time consuming and error prone translations. The design and analysis environment allows early in the design process (pre-netlist) to create abstract plane definitions with virtual source and sync components to create plane design guidelines and optimize the PCB stackup. Post-layout analysis provides accurate modeling of the details of carved up power and ground planes. Impedance is measured at all power and ground pins insuring that stable and sufficient power can be delivered efficiently. |
