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Design007-Aug2022

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72 DESIGN007 MAGAZINE I AUGUST 2022 IR drop analysis with DC analysis, which only works with uniform temperature. Melika also points out the differences between typical thermal simulation and the solver's electro- thermal co-simulation. Karthik then takes over, demonstrating electrothermal co-simulation by importing an entire CAD file into the Celsius environment. He utilizes PowerTree technology to orga- nize heat sources and heat sinks—definitions, model names, target impedance constraints, etc. He places probes at different points on the PCB and tracks the transient results of components across various points of time. He shows how to trace power loss across each layer across time, and changes in power distribution as well. e 3D modeling capa- bility depicts any potential hot spots on the board. To illustrate how this PCB would operate in the real world, Karthik switches to the CFD analysis environment and places the design inside an enclosure. He adds a heat sink to one of the thermally problematic packages, and a cooling fan on the side of the enclosure, then traces the cooling flow across the component and board. Karthik closed with examples of the more comprehensive results attained through transient electrothermal co-simulation vs. tra- ditional steady state analysis. e Celsius ermal Solver continues the "shi le" of signal integrity horsepower into the front end of the design cycle, and it offers functionality that will appeal to electrical and mechanical engineers. Maybe EEs and MEs will eventually speak the same language aer all. Melika and Karthik pack quite a bit into this half-hour webinar. If you're dealing with ther mal chal lenge s in your high-sp eed PCB designs, you'll want to check out the Ca d e n c eT E CH TA L K , " Ho w Sta t i c a n d Dynamic IR Drop Analysis Can Help PCB Designs and Challenges." Watch now! DESIGN007 Related content: • Shift Left: Moving Multiphysics into the Mainstream • The System Designer's Guide to... System Analysis: Electromagnetic Interference and Thermal Analysis of Electronic Systems by Brad Griffin • The Cadence System Design Solutions Guide • "Cadence Provides 'Clarity' in Design Tool," Interview with Brad Griffin, Design007 Magazine, (July 2022)

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