Applications Engineering Director

Analog Devices

Keith Szolusha is an applications director with Analog Devices in Santa Clara, California. Keith works in the BBI Power Products Group, which focuses on boost, buck-boost, and LED driver products, while also managing the power products EMI chamber line. He received his B.S.E.E. in 1997 and M.S.E.E. in 1998 from MIT in Cambridge, Massachusetts, with a concentration in technical writing.

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Software & OS

How to Use LTspice to Produce Bode Plots for LED Drivers - Blog

August 16, 2021

Proper control loop phase and gain measurements should be made by factory experts possessing (expensive) equipment and commensurate experience. For those who do not have access to one or either of these, there is an alternative.

Analog & Power

How Assembly Orientation of an SMPS Inductor Affects Emissions - Blog

August 11, 2021

One potential source of emissions is the switching node, referred to as SW on many schematics. The SW node copper can act as an antenna, transmitting the noise generated by fast and efficient high power switching events. This is the main source of emissions for most switching regulators.

Analog & Power

4-Switch Buck-Boost Controller Layout for Low Emissions—Single Hot Loop vs. Dual Hot Loop - Blog

August 10, 2021

Automotive application circuits must meet strict EMI standards to avoid interfering with broadcast and mobile service frequency bands. In this article we look specifically at two possible solutions for a 4-switch buck-boost controller and compare EMI chamber results.

Analog & Power

A Practical Method for Separating Common-Mode and Differential-Mode Emissions in Conducted Emissions Testing - Blog

August 09, 2021

EMI from switching regulators is broken down into radiated and conducted emissions (CE). This article focuses on conducted emissions, which can be further classified into two categories: common-mode (CM) noise and differential-mode (DM) noise. Why the CM-DM distinction?

Articles 1 - 4