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AC-DC Power Supplies

Written by Jeff Child

Multipurpose Trend

Choosing right AC-DC power supply can have a major impact on your embedded system’s capabilities. Power supply manufacturers are meeting today’s demands with devices designed to suit applications like industrial control, medical and IoT—and even multipurpose needs.

  • What’s happening in AC-DC power supplies?

  • 600W IHC600 from Calex

  • CUI’s VGS-100C series

  • PQU650 series from Murata
    Power Solutions

  • RACM1200-V series from RECOM

  • TDK-Lambda brand TPS4000-48

  • XP Power’s HDL3000-HV series

While embedded systems strive to cram ever more intelligence into smaller spaces, power has direct implications on the size, cooling and mobility of any system. That makes AC-DC power supplies critical enablers for meeting today’s needs. To meet those needs, AC-DC power supply vendors continue to roll out more efficient products, new cooling 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.

In recent years, there’s been a trend in AC-DC power supply products that have some sort of application or industry focus. Although that trend hasn’t diminished, many of the new products released over the past 12 months are moving in a multipurpose direction. We’re seeing supplies that offer certifications and features that span multiple applications like medical, industrial and networking (Figure 1).

FIGURE 1
Many of the new AC-DC power supplies released in the past year are moving in a multipurpose direction. We’re seeing supplies that offer certifications and features that span multiple applications such as medical, industrial and networking.

Exemplifying this trend, RECOM’s RACM1200-V series of AC-DC powers supplies offer a wide output voltage adjustment range and a combination of constant current limitation and hiccup mode settings. All these features make the product multipurpose, says RECOM. The product also holds worldwide safety files to medical, industrial and ITE standards along with electromagnetic compatibility compliance with class A immunity and class B emissions.

Shown in the product gallery on the following pages are representative examples of AC-DC power supplies. The gallery shows a mix of products spanning a wide range of sizes, formats and voltage configurations. Most of the AC-DC supplies offer certifications specifically tailored to specific markets, but many meet multiple certifications across different markets. Others are targeted for harsh environmental applications and feature special cooling schemes and wide temperature specs.

PUBLISHED IN CIRCUIT CELLAR MAGAZINE • JUNE 2021 #371 – Get a PDF of the issue


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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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AC-DC Power Supplies

by Jeff Child time to read: 2 min