New Power Concerns At 10/7nm


As chip sizes and complexity continues to grow exponentially at 7nm and below, managing power is becoming much more difficult. There are a number of factors that come into play at advanced nodes, including more and different types of processors, more chip-package decisions, and more susceptibility to noise of all sorts due to thinner insulation layers and wires. The result is that engineers ... » read more

Addressing Power Integrity Challenges For SoCs


Power integrity has become a crucial part of the system-on-a-chip (SoC) design flow because power-related issues can affect chip timing and even lead to complete device failure. Specifically, excessive rail voltage drop (IR-drop) and ground bounce can create timing problems and electromigration effects that impact a chip's performance and reliability. Analyzing a chip's power also poses diff... » read more

Worst-Case Results Causing Problems


The ability of design tools to identify worst-case scenarios has allowed many chipmakers to flag potential issues well ahead of tapeout, but as process geometries shrink that approach is beginning to create its own set of issues. This is particularly true at 16/14nm and below, where extra circuitry can slow performance, boost the amount of power required to drive signals over longer, thinne... » read more

Routing Signals At 7nm


[getperson id="11763" comment="Tobias Bjerregaard"], [getentity id="22908" e_name="Teklatech's"] CEO, discusses the challenges of designs at 7nm and beyond, including power integrity, how to reduce IR drop and timing issues, and how to improve the economics of scaling. SE: How much further can device scaling go? Bjerregaard: The way you should look at this is [getkc id="74" comment="Moore... » read more

Closing The Power Integrity Gap


Voltage drop has always been a significant challenge. As far back as 130nm, specialist tools were being used to ensure that enough local decoupling capacitance (decap) cells were inserted in addition to larger decaps implemented around the SoC. But advanced nodes are complicating matters and further increasing complexity. These technological challenges, which underlie the power, performance ... » read more

Analyzing The Integrity Of Power


Power analysis is shifting much earlier in the chip design process, with power emerging as the top design constraint at advanced process nodes. As engineering teams pack more functionality and content into bigger and more complex chips, they are having to deal with more complex interactions that affect everything from power to its impact on signal integrity and long-term reliability. That, i... » read more

Accurate Thermal Analysis, Including Thermal Coupling Of On-Chip Hot Interconnect


Driven by rapid advancement in mobile/server computing and automotive/communications, SoCs are experiencing a fast pace of functional integration along with technology scaling. Advanced low power techniques are widely used, while meeting higher performance requirements using a variety of packaging technologies. The Internet of Things (IoT) is further opening up new applications with connected d... » read more

Thermal Is Still Simmering


With the ever increasing sophistication in today’s high-performance [getkc id="81" kc_name="SoC"]s on top of sheer physics of device manufacturing, thermal is a much bigger concern than ever before. It is well understood that thermal and power are closely related, and there exists a vicious cycle between leakage power and temperature: leakage goes up, temperature goes up; temperature goes ... » read more

The Week In Review: Design


Tools Cadence rolled out a custom power integrity tool for dealing with transistor-level electromigration and IR drop with SPICE-level accuracy. It works in conjunction with the company’s existing power integrity tool for cell-level power signoff. Open-Silicon established a high-speed SerDes technology center of excellence to speed design and production of ASICs using high-speed serial co... » read more

Changing The Meaning Of Sign-Off


Chip development teams are faced with an ever-increasing number of power integrity and reliability challenges these days, especially as designs adopt FinFET technology. Even those with the most thorough sign-off checks often encounter unexpected surprises that quickly turn into tape-out hurdles, or worse yet, extensive re-design. The best way to avoid this scenario and ensure a smoother sign-of... » read more

← Older posts