Power Integrity

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In an analysis of supply chain data and IPC survey results, Zachariah Peterson gives a measured overview of where we are at, and what might happen next.In an analysis of supply chain data and IPC survey results, Zachariah Peterson gives a measured overview of where we are at, and what might happen next.

Check out this description of what is likely the fastest GaN edge-speed ever recorded.

Many designs today include three different value decoupling capacitors, or when using just one capacitor, a small value like 0.1 uF. These recommendations are based on 50-year-old assumptions that do not apply today. It is time to reconsider these out of date, legacy design guidelines.

Automotive design has captured the public’s imagination, and their expectations are creating countless technical challenges for engineers working in this space. For SI/PI/EMC/EMI engineers, the challenges are unique inside the car due to harsh environments as well as crowded systems.

Here’s a roundup of some of the things taking place at DesignCon 2020.

Poor control loop stability results in degraded power supply rejection ratio, transient response, output noise, and, for mixed signal circuits, degraded jitter. Datasheet application examples and reference designs do not often include stability information, and measurements often conclude the stability is poor.

Here’s what you need to do to enter to win copies of 9 books to round out your SI/PI library—one is out of print and one is hot off the press.

Measuring small resistance values is not trivial, but since 1861, when Lord Kelvin invented the Kelvin bridge,¹ we at least have a solution for measuring very low DC resistances: the four-wire Kelvin connection (see Figure 1). We measure the resistance by sending a known current through the resistor and measure the voltage drop using separate wires.

Over the years, I have presented to and worked with thousands of engineers, from very young to very old. Many of the problems they bring to me have a small set of common answers. I’ve collected these into 20 basic rules of engineering.