Correct-By-Design Methodology Requires Carefully Defined Constraints


Since the dawn of PCB usage, constraints have been an important part of the design. What are the dimensions? What weight of copper? Now, constraints have become much more than just physical dimensions. The most important constraints are defined by the design requirements of differential pairs, BGAs, low voltage devices, and high-speed parallel interfaces. The cost of rework skyrockets the fu... » read more

The Power Estimation Challenge


If you wonder how important low power is in chip design today, consider the recent news in the blogosphere reporting the controversy surrounding Qualcomm’s Snapdragon 810 SoC — the company’s first flagship 64-bit chip, which will most likely power the top Android devices released in 2015. The story broke in early December along the lines that the 810 had problems with overheating. Whet... » read more

Modeling High-Performance Analog And RF Circuits In Nanometer-Scale CMOS


By Mick Tegethoff and David Lee Today’s consumer, communication, and computer electronic devices have clocks, communication interfaces, and high-speed signal-conditioning circuits that operate at radio frequencies (RF). Providing price-competitive products often requires monolithic integration of these circuits in low-power nanometer-scale bulk CMOS silicon. This is a worst-case scenario for... » read more

Calibrating Electronics Thermal Simulation Models


‘Rubbish In, Rubbish Out’ is a common and well-accepted fact in the world of thermal simulation—actually any type of simulation, for that matter. Regardless of the technical capabilities of your thermal simulation tool, the accuracy of prediction will always be tightly coupled to the accuracy of the input data. In terms of electronics thermal simulation, the prediction of the internal ... » read more

IGBT Power Cycling And Lifetime Testing


I have never been very good at introducing topics. During my presentations, I either jump directly into the subject matter, or start with a joke. My mom always said I could be a stand-up comedian. I prefer to sit. Oddly, that led me to becoming an engineer. And while this introduction does not lead me any closer to my actual topic, I presume some people rolled their eyes back and crossed their ... » read more

User Case Study


Whenever more than one clock is employed in an SoC (which is all SoCs), the risk of errors from clock domain crossings (CDC) – signals (or groups of signals) that are generated in one clock domain and consumed in another – is incredibly high. Unfortunately, CDC bugs are nearly impossible to catch with conventional simulations. Thus, all too often they escape into silicon. Debugging them in ... » read more

Extending Power Analysis To The Emulation of Complex SoCs


Using hardware emulation to estimate SoC power consumption delivers significant value. Emulators are capable of long runs on large designs, making it practical to emulate an RTOS boot sequence or graphics processing of multiple frames. Estimating power consumption of these advanced functions executing across the complete SoC provides valuable insight into the chip’s power draw and its impact ... » read more

The Revolution Will Not Be Televised: It Will Be On Your Phone


The advent of smart devices has ushered in a revolution all over the world. The most widely used smart device is the mobile phone, which has radically changed the way we communicate. There are many other types of devices running 24/7 in our homes, hospitals, businesses, etc. No matter what kind of functionality smart devices have, they have one thing in common: they all consume energy. They ... » read more

As Nodes Advance, So Must Power Analysis


By Chetandeep Singh and Ravi Tangirala Smaller geometry nodes offer cost and performance advantages that encourage their adoption. Yet they present a new set of challenges for IC manufacturers: Though transistors are smaller, they leak more current. This is an important issue as the demand for high-performance, battery-operated, system-on-chips (SoC) in communication and computing shifts th... » read more

Power Management Considerations For Efficient Embedded Systems Development


Usable product life is a critical factor in the success of any portable device, and managing power efficiency is a key requirement for embedded systems today. Historically, power management was seen as a “hardware problem” that plagued development teams, but with today’s sophisticated devices and more specialized hardware, this impacts the software developer, as well. One reason for this ... » read more

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