Instead, the PCB’s scattering parameters (S-parameters) can be extracted using Cadence Sigrity PowerSI, with a 0 MHz to 700 MHz frequency range. The complexity of the power and ground polygon shapes and the multi-layer stack-up make it difficult to manually calculate the resistance and inductance from the layout. The evaluation board can reach up to 2,000 A ( Figure 3).įigure 3 The evaluation board combines digital controller and step-down power module. This analysis has been performed using an evaluation board that combines MP2891, a 16-phase digital controller, and MPC22163-130, a 130 A, two-phase, non-isolated, step-down power module. Table 1 The above numbers highlight design specifications for power rail. Table 1 shows the typical power rail requirements for artificial intelligence (AI) applications. The PDN’s resistor, inductor, ad capacitor (RLC) components create resonant tanks that designers may not be aware of, with resonant frequencies that amplify the high-frequency harmonics created by the converter’s switching, leading to unexpected converter behavior. Increasing the slew rates generates more powerful high-frequency harmonics. These parasitic elements must also be considered when modeling the system response. The components in the PDN display parasitic behaviors, such as the equivalent series inductance (ESL) and equivalent series resistance (ESR) of the capacitor. The PDN design’s primary objective is to minimize the voltage fluctuations and ensure normal GPU operation.įigure 2 shows the PDN architecture of a typical GPU power delivery network.įigure 2 The PDN architecture of a typical GPU power delivery network comprises components connected to the voltage and ground rail. The PDN is comprised of the components connected to the voltage and ground rail, including the power and ground plane layout, decoupling capacitors used for power stability, and any other copper features that connect or couple to the main power rails. The converter’s behavior and the power delivery network (PDN) must be accurately modeled to emulate the transient buck performance and validate various GPU-based systems without having to go through a long, costly iterative process. All other names, trademarks and logos are property of their respective owners.Figure 1 shows COT control for fast transient response.įigure 1 COT control achieves fast transient response. iPhone®, iPad® and App Store® are trademarks of Apple Inc. Android and Google Play are trademarks of Google LLC. Nintendo Switch is a trademark of Nintendo. Microsoft, the Xbox Sphere mark, the Series X logo, Series S logo, Series X|S logo, Xbox One and Xbox Series X, Xbox Series S, and Xbox Series X|S are trademarks of the Microsoft group of companies. “PlayStation Family Mark”, “PlayStation”, “PS5 logo”, “PS5”, “PS4 logo” and “PS4” are registered trademarks or trademarks of Sony Interactive Entertainment Inc. All other intellectual property relating to the trucks, machines, construction equipment, associated brands and imagery (including trademarks and/or copyrighted materials) featured in the game are therefore the property of their respective companies. The machines in this game may be different from the actual products in shapes, colours and performance. Software Entwicklung GmbH and its logos are trademarks or registered trademarks of weltenbauer. Construction Simulator, astragon, astragon Entertainment and its logos are trademarks or registered trademarks of astragon Entertainment GmbH. Published and distributed by astragon Entertainment GmbH.
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