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- CUI is a technology company dedicated to the development, commercialization, and distribution of new, innovative electro-mechanical products.

Power Solutions Center

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As a leader in the power supply industry CUI offers a diverse range of leading solutions to meet your needs. Browse CUI’s main product offerings. Learn More

Power Product Selector

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The Power Product Selector allows you to browse CUI’s wide range of ac-dc power supplies and dc-dc converters from front-end power to digital point-of-load. Learn More

High Efficiency External Power Supplies

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Check out CUI’s comprehensive line of Level VI and CoC Tier 2 compliant external ac-dc adapters to keep you one step ahead of the latest regulations. Learn More

Product Listing View All

Featured Products

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DC Switching Regulators

Designed as a drop-in replacement for linear LM78XX and LM79XX regulators, the CUI V78 and P78 series utilize switching technology, creating a highly compact, highly efficient alternative solution. Learn More

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Open Frame AC-DC

CUI's next-generation VOF open frame AC-DC power supplies are designed to meet the growing need for "green" embedded power solutions, delivering higher efficiency and improved no-load performance. Learn More

Newest Products View All (76)

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1" x 1" Encapsulated DC-DC Converters

CUI introduces their PDQ series 1" x 1" encapsulated isolated DC-DC converters that are highly efficient and rugged modules from 10 W to 30 W and are ideal replacements for the larger 1" x 2" modules.

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USB 2.0 and 3.0 Connectors

CUI’s USB 2.0 and 3.0 connectors provide engineers flexibility and versatility, offering a variety of types, orientations, mounting styles and current ratings to choose from.

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DC Axial Fans

CUI’s DC axial fans address the increasing thermal challenges present in today’s board-level electronic applications.

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Ultra-Compact 1 A DC Switching Regulators Deliver 15 W / cm³

CUI's non-isolated P78A-1000 DC-DC converters series is the newest addition to CUI’s line-up of dc switching regulators. Delivering a power density of 15 W / cm3 and up to 1 A of current output, the series offers a low-profile footprint typically reserved for regulators with half of the rated output.

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DC-DC Converters for Industrial Applications

Increase reliability and efficiency while decreasing overall design size when integrating CUI’s industrial DC-DC converters into your design.

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Waterproof Buzzers

CUI's piezo transducers deliver ingress protection (IP) rating up to IP68 and are available in wire leads, through hole, and panel mount options for a wide range of industrial and outdoor applications.

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Product Training Modules View All (21)

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Energy Efficiency Standards for External Power Supplies

Duration: 10 minutes

To explain the current and future regulatory environment for external ac-dc power adapters.

Good Thermal Management

Thermal Management of Power Supplies

Duration: 20 minutes

Considerations for thermal management in design and application.

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AMT31 Series Commutation Encoder

Duration: 20 minutes

Describing the functional theory of commutation encoders. Along with understanding what makes AMT31 Series revolutionary.


Power Supply Safety Standards

Duration: 10 minutes

Reviewing the power supply international safety standards, the major agencies, and regional safety marks.

Featured Videos View All (20)

CUI 15 W and 25 W Isolated DC-DC Converters | Digi-Key Daily

CUI’s PRD15 and PRD25 series are DC-DC converter modules outputting 15 W and 25 W of power from compact, low-profile packages.

CUI 4mm Micro Buzzer | Digi-Key Daily

View CUI's small, lightweight magnetic transducer micro buzzers, and see why they are ideal for portable equipment applications

CUI in the Lab – Capacitive vs Optical Encoder Oil Test

CUI in the Lab series takes viewers inside the engineering lab for technical and application-based demonstrations on the latest technologies from CUI.

CUI in the Lab - AMT Zeroing & One Touch

CUI in the Lab series takes viewers inside the engineering lab for technical and application-based demonstrations on the latest technologies from CUI.

Tools & Support

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Efficiency Standards for External Power Supplies

This paper examines the evolution of efficiency standards and provides a summary of the current global legislation impacting external ac-dc power supplies. Learn More

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Designing Intelligence into Commutation Encoders

The benefits of encoders based on capacitive technology offer much more than just improved performance and reliability. Learn how this alternate approach to motion sensing delivers a new level of intelligence for designers utilizing rotary commutation encoders. Learn More

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Reliability Considerations for Power Supplies

Power supplies may not have the glamour, nor get the attention that processors and displays receive, but they are just as vital to system operation. In this application note we look at reliability in power supplies, how it’s measured and how it can be improved. Learn More

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EMI Considerations for Switching Power Supplies

This application note examines the rules and regulations governing control of EMI, discusses types of noise generated by switching power supplies, and provides basic EMI mitigation guidance when designing a power system. Learn More

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Power Quick Guide

This guide provides a quick and easy way to compare our ac-dc power supplies and dc-dc converters based on key specifications and features. Learn More

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Components Quick Guide

This guide allows users to compare a range of electrical and mechanical specifications among our diverse range of connectors, buzzers, speakers and encoders. Learn More

Additional Content

AMT Modular Encoder Resources

Application Notes

White Papers

News - View All

3D Models

Novum Advanced Power Resources

Power Resources



Published Articles - View All

Manufacturer Web site