tag: 3D ICs

Balancing Power And Heat In Advanced Chip Designs
By Karen Heyman - 10 Nov, 2022 - Comments: 1

Power and heat use to be someone else's problem. That's no longer the case, and the issues are spreading as more designs migrate to more advanced process nodes and different types of advanced packaging. There are a number of reasons for this shift. To begin with, there are shrinking wire diameters, thinner dielectrics, and thinner substrates. The scaling of wires requires more energy to driv... » read more

Legacy Tools, New Tricks: Optical 3D Inspection
By Karen Heyman - 08 Nov, 2022 - Comments: 0

Stacking chips is making it far more difficult to find existing and latent defects, and to check for things like die shift, leftover particles from other processes, co-planarity of bumps, and adhesion of different materials such as dielectrics. There are several main problems: Not everything is visible from a single angle, particularly when vertical structures are used; Various struc... » read more

Customization, Heterogenous Integration, And Brute Force Verification
By Ed Sperling - 14 Jul, 2022 - Comments: 0

Semiconductor Engineering sat down to discuss why new approaches are required for heterogeneous designs, with Bari Biswas, senior vice president for the Silicon Realization Group at Synopsys; John Lee, general manager and vice president of the Ansys Semiconductor business unit; Michael Jackson, corporate vice president for R&D at Cadence; Prashant Varshney, head of product for Microsoft Azu... » read more

EDA Gaps At The Leading Edge
By Ed Sperling - 29 Jun, 2022 - Comments: 1

Semiconductor Engineering sat down to discuss why new approaches are required for heterogeneous designs, with Bari Biswas, senior vice president for the Silicon Realization Group at Synopsys; John Lee, general manager and vice president of the Ansys Semiconductor business unit; Michael Jackson, corporate vice president for R&D at Cadence; Prashant Varshney, head of product for Microsoft Azu... » read more

A Practical Approach To DFT For Large SoCs And AI Architectures, Part II
By Rahul Singhal - 08 Mar, 2022 - Comments: 0

By Rahul Singhal and Giri Podichetty Part I of this article discusses the design-for-test (DFT) challenges of AI designs and strategies to address them at the die level. This part focuses on the test requirements of AI chips that integrate multiple dies and memories on the same package. Why 2.5D/3D chiplet-based designs for AI SoCs? Many semiconductor companies are adopting chiplet-based d... » read more

Advanced Packaging Shifts Design Focus To System Level
By Ann Mutschler - 23 Nov, 2021 - Comments: 0

Growing momentum for advanced packaging is shifting design from a die-centric focus toward integrated systems with multiple die, but it's also straining some EDA tools and methodologies and creating gaps in areas where none existed. These changes are causing churn in unexpected areas. For some chip companies, this has resulted in a slowdown in hiring of ASIC designers and an uptick in new jo... » read more

HBM3: Big Impact On Chip Design
By Ann Mutschler - 14 Oct, 2021 - Comments: 0

An insatiable demand for bandwidth in everything from high-performance computing to AI training, gaming, and automotive applications is fueling the development of the next generation of high-bandwidth memory. HBM3 will bring a 2X bump in bandwidth and capacity per stack, as well as some other benefits. What was once considered a "slow and wide" memory technology to reduce signal traffic dela... » read more

Architecting Interposers
By Brian Bailey - 14 Oct, 2021 - Comments: 0

An interposer performs a similar function as a printed circuit board (PCB), but when the interposer is moved inside a package the impact is significant. Neither legacy PCB nor IC design tools can fully perform the necessary design and analysis tasks. But perhaps even more important, adding an interposer to a design may require organizational changes. Today, leading-edge companies have shown ... » read more

Thermal And Stress Analysis Of 3D-ICs With Celsius Thermal Solver
By Cadence - 22 Sep, 2021 - Comments: 0

As electronics get smaller and faster, the environment for thermal issues is becoming more and more challenging. These problems are widespread and can appear in the chip, the board, the package, and the entire system. This white paper helps designers understand the cross-fabric thermal and stress challenges introduced by 3D-ICs and how the Cadence Celsius  Thermal Solver helps designers analyz... » read more

Chipmakers Getting Serious About Integrated Photonics
By Brian Bailey - 12 Jul, 2021 - Comments: 3

Integrating photonics into semiconductors is gaining traction, particularly in heterogeneous multi-die packages, as chipmakers search for new ways to overcome power limitations and deal with increasing volumes of data. Power has been a growing concern since the end of Dennard scaling, which happened somewhere around the 90nm node. There are more transistors per mm², and the wires are thinne... » read more

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