OrCAD datasheets

Sigrity PowerDC

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www.cadence.com 2 Sigrity PowerDC Features Electrical and thermal co-simulation Powerful electrical simulation is combined with thermal distribution analysis in an automated environment that iterates on the vital interactions between current flow and temperature. This maximizes accuracy and fully considers effects such as the increasing electrical resistance that occurs at higher operating temperatures. This unified environment makes it easy for you to confirm that your design has met specified voltage and temperature thresholds, without having to spend signif- icant effort sorting out difficult-to-judge impacts. The Sigrity PowerDC environment incorporates a task-focused workflow tuned for DC and thermal analysis. You can bring in design data from popular PCB and IC package layout systems, and you'll be guided through straightforward simulation set-up steps. A range of reporting and visualization options simplify issue identi- fication, and interactive geometry editing enables what-if consideration of design improvement options. Managing system-level IR drop With voltage levels dropping and current requirements rising, accurate IR drop analysis is a critical step for today's high- performance designs. Design teams that effectively manage DC loss are able to achieve required tolerances of 5% and less. They are also rewarded with welcome additional room to achieve AC noise margins. Rapid Sigrity PowerDC simula- tions provide accurate results that take complex plane geometries and multiple voltage domains into account. Results are flexibly displayed, and post-layout DRC confirmation is provided. Optimizing voltage regulator module (VRM) settings Adding a VRM remote sense at the right spot helps avoid IR drop by detecting changes in current load and compensating for it. Sigrity PowerDC technology provides single-step automation for the intelligent selection of the ideal VRM sense line location. This yields a margin improvement of 10% or more when compared with seemingly reasonable alternative place- ments. The Sigrity PowerDC environment automatically balances current levels, Figure 2: Sigrity PowerDC technology provides accurate simulation of problematic real-world structures such as cutouts, via fields, wirebonds, and neck downs Multi-board connection Current density distribution Layout 2 daughter_boa... Layout 1 mother_board.spd Layout 4 daughter_boa... Layout 3 daughter_boa... Layout 5 daughter_boa... Figure 3: The Sigrity PowerDC environment is capable of analyzing multi-board configurations Figure 4: PowerTree technology enables pre-route analysis of the PDN to ensure the correct source, sink, and discrete components have been selected to meet the design criteria.

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