Datasheet Directories

Industrial Power Supplies

Written by Jeff Child

Factory Functionality

Over the past couple years, there’s been an increasing trend toward new power supply products that have some sort of application or industry focus. That means supplies that include special performance specs or tailored packaging intended for a specific application area such as industrial control and factory automation.

Often the unsung heroes of any embedded system design, power supplies are critical enablers for meeting today’s needs. As embedded systems pack ever more intelligence into smaller spaces, power has direct implications on the size, cooling and mobility of any system. To keep pace, power supply vendors continue to roll out more efficient products, new partitioning strategies and more compact solutions. In tandem to those trends, there’s a growing demand to reduce size, weight and power of system electronics. Driving those demands is a desire to fit more functionality in the same space or into a smaller footprint.

If you look at the power supply products released over the last 12 months, there’s been a definite uptick in new products that have some sort of application or industry focus. While this hasn’t diminished the role of general-purpose power supplies, the trend has been toward supplies that include either certifications, special performance specs or tailored packaging intended for a specific application area such as industrial control and factory automation (Figure 1).

An example of special power supply features for industrial systems is XP Power’s CMP250 series of high peak-power AC-DC power supply units. The supplies provide a highly flexible combination of electrical and thermal characteristics. These power supplies deliver up to 500W of peak power for up to 60 seconds, as well as providing up to 250W of continuous convection-cooled power. This flexibility makes the series well suited for motor applications and other electromechanical loads without the need for fan cooling, removing unwanted audible noise, across a range of applications.

TDK’s TPS4000-24 is industrial power supply is likewise well suited for use in many industrial settings. Its high voltage, three-phase input avoids the requirement for costly step-down transformers and assists phase load current balancing. Meanwhile, the PQU650 series from Murata boast cooling options suited to factory automation applications, with forced air- and convection-cooled ambient ratings. No system fans are required up to 450W up to 50°C temperatures, and only 300 LFM forced air-cooling is needed for 650W at 50°C. 

FIGURE 1
Power supplies require special cooling and high levels of ruggedness in order to operate in industrial system environments.

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Editor-in-Chief at Circuit Cellar | Website | + posts

Jeff Child has more than 28 years of experience in the technology magazine business—including editing and writing technical content, and engaging in all aspects of magazine leadership and production. He joined the Circuit Cellar after serving as Editor-in-Chief of COTS Journal for over 10 years. Over his career Jeff held senior editorial positions at several of leading electronic engineering publications, including EE Times and Electronic Design and RTC Magazine. Before entering the world of technology journalism, Jeff worked as a design engineer in the data acquisition market.

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Industrial Power Supplies

by Jeff Child time to read: 2 min