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IN THIS ISSUE:
» Protect And Enhance High-Power Designs With Integrated Solid-State Isolators
» Improving Validation Of Power Supply Re-Rush Performance Through More Accurate Sensing Of AC Line Peaks
» Focus On Magnetics:
Coupled Inductor Design For A Flyback With Very Wide Input Voltage Range
» Industry Events: Coiltech North America & CS MANTECH
» Power Products
» New on How2Power.com
» Industry Events: CMSE, PCIM & ITEC
» Other Top Power News
From the Editor's Desk David G. Morrison
Editor, HOW2POWER TODAY
At the upcoming Applied Power Electronics Conference (APEC), one of the talks I’m looking forward to is John Kassakian’s plenary, “A Technology’s Journey: 40 Years Of APEC”. Kassakian—one of the people responsible for founding APEC—will be reviewing the “transformational” advances made in the field of power electronics over the decades. As noted in his abstract, these advances have made this branch of engineering “an enabler for many new applications”. Over time, we’ve seen how true that is as power electronics has become intertwined with the development of so many applications and other technologies. This is the philosophy underlying the compilation of conferences, tradeshows, and other events on How2Power’s Industry Events calendar, which already lists over 300 events for 2025. Since power electronics is everywhere, those working in this field must stay in touch with what’s happening in many related fields and industries. With regard to the events calendar, you don’t have to scroll down very far to find conferences that are pertinent either in terms of technology or business development. For example, there’s the International Battery Seminar, an exceptional source of information on battery R&D and products; the ARPA-E Energy Innovation Summit, whose showcase often includes power-related exhibits; and NVIDIA’s GTC AI conference, which aligns with the most discussed application of the day and features power electronics suppliers. And these are just the events being held the same week as APEC! While some companies are big enough to participate in multiple events simultaneously, I suspect it’s getting harder for even large organizations, let alone the individual engineer, to keep up with the growth in the events space. But hopefully, reporting on relevant meetings by How2Power.com and other publications can help. To that end, this issue presents previews of five conferences — Coiltech, CS MANTECH, CMSE, PCIM and ITEC+ — which may intrigue the reader and perhaps alert them to new opportunities for learning, sharing, and other engagement.
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HOW2POWER EXCLUSIVE DESIGN ARTICLES 
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Protect And Enhance High-Power Designs With Integrated Solid-State Isolators
by Davide Giacomini, Infineon Technologies, Pavia, Italy and Sameh Snene Infineon Technologies, Munich Germany
In high-power designs, an isolation technique with several integrated features can mean the difference between a product that meets and even exceeds customer expectations and one that generates numerous customer complaints. To achieve this isolation, an integrated solid-state isolator (SSI) based on coreless transformer galvanic isolation provides many design benefits. Unlike optical-based solid-state relays (SSRs), an integrated SSI driver can provide the required isolation and energy transfer to ensure proper operation and extended life for high-power systems as well as several integrated protection features. In this article, we’ll describe the features and characteristics of Infineon’s integrated SSI drivers and then present a series of examples demonstrating how these devices can be combined with power MOSFETs and other supporting components to replace conventional DIN-rail and panel-mount SSRs. Read the article…
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These coreless transformer-based
isolators enable on and off control,
acting like a relay switch without
requiring a secondary-side, isolated
power supply. |
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Detecting the peak in the ac line
voltage accurately is critical when
testing a power supply’s vulnerability
to the re-rush currents that flow
during recovery from ac line dropouts. |
Improving Validation Of Power Supply Re-Rush Performance Through More Accurate Sensing Of AC Line Peaks
by Viktor Vogman, Olympia, Wash.
Switch-mode power supplies that support a wide range of input voltages (up to 277 Vac) in real applications can operate in various ac transient conditions such as voltage sags and surges, dropouts, line frequency deviations, etc. Although these conditions are detailed in power supply specs and replicated with conventional programmable ac sources during qualification, some power supplies that pass extensive qualification tests may still have a significant failure rate in the field due to ac transients associated with the so-called re-rush event. This article examines the impact of the ac peak voltage detection accuracy on replicating the worst-case re-rush condition and discusses shortcomings of the direct input voltage sensing technique. It then presents a simple technique based on voltage derivative sensing for improving the accuracy of such detection. Read the article…
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FOCUS ON MAGNETICS
Sponsored by Payton Planar Magnetics
A monthly column presenting information on power magnetics design, products, or related technology |
Coupled Inductor Design For A Flyback With Very Wide Input Voltage Range
by Gregory Mirsky, Design Engineer, Deer Park, Ill.
There is an automotive and railroad class of flyback converters that demands operability over a very wide input voltage range—from 30 V to 800 V. These are backup power supplies that should operate when the traction battery decays. With such a wide input range, duty cycle will vary widely. Yet rather than assuming a duty cycle range, most flyback designs assume some average value for duty cycle. This can have serious implications for the performance of the coupled inductor, particularly in a flyback design with a very wide input voltage range. This article offers a procedure for designing the coupled inductor that takes into account the full duty-cycle range of the flyback. The procedure is demonstrated in a design example using the 30-V to 800-V input range.
Read the article…
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INDUSTRY EVENTS
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Coiltech North America 2025: The Coil Winding Industry’s New Destination
The coil winding industry in North America is undergoing a transformation. As electrification reshapes industries and supply chains evolve, there is an increasing need for a dedicated, high-efficiency event that brings together professionals specializing in electric motors, transformers, generators, and all inductances. That’s why Coiltech North America 2025 is launching in Novi, Michigan, on June 11-12 as a focused, cost-effective exhibition and conference that gathers the entire coil winding supply chain under one roof. With over 230 booths already booked, Coiltech North America is shaping up to be the key meeting point for manufacturers, suppliers, and technical experts. Read the full story…
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CS MANTECH Presents Latest Developments In Compound Semiconductor Manufacturing And Device Technology
CS MANTECH 2025, the International Conference on Compound Semiconductor Manufacturing Technology, will be held May 19-22 at the Hilton New Orleans Riverside. CSMANTECH is a not-for-profit organization whose focus is to provide a forum for members of the compound semiconductor community to exchange and discuss new ideas to better serve the public in general. They accomplish this objective through the annual CS MANTECH conference, which is comprised of technical papers, talks, workshops, and manufacturer exhibits. The conference is open to anyone interested in the latest advances in compound semiconductor manufacturing and device technology. This article presents an overview of the CS MANTECH 2025 program and highlights some of the power semiconductor-related talks in the program. Read the full story…
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POWER PRODUCTS |
Infineon Technologies’
IGD015S10S1 and
IGE033S08S1 transistors. |
GaN Transistors Come In Silicon-Footprint Packages
 Photo: The CoolGaN G3 transistors offer a footprint that, for the first time, allows for easy multi-sourcing strategies and complementary layouts to silicon-based MOSFET designs, says the vendor. The 100-V, 1.1-mΩ transistor will be available in a 5-mm x 6-mm RQFN, while the 80-V, 2.3-mΩ transistor will be offered in a 3.3-mm x 3.3-mm RQFN.
See the full story…
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Texas Instruments’ TPS7H6003-SP
(and others) gate-driver family. |
200-V GaN FET Driver Is Space Grade
Diagram: The half-bridge gate drivers are designed to accurately drive GaN FETs with fast rise and fall times. Offered in rad-hard and rad-tolerant versions, with 22-V, 60-V and 200-V ratings, this gate driver family covers the entire voltage range needed to design satellite power systems. According to the company, the 200-V model represents an industry first.
See the full story…
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Power Integrations’ LCS7269Z
HiperLCS2-HB controller. |
LLC Switcher IC Delivers 1650 W Of Continuous Output Power
Photo and Diagram: The primary-side controller in the HiperLCS-2 chipset delivers continuous power greater than 1.6 kW with peak power delivery of 2.5 kW by leveraging a new, thermally efficient POWeDIP package.
See the full story…
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Nexperia’s NEX90XXXX-Q100
voltage regulators. |
Automotive-Grade LDOs Offer High Accuracy And Low Quiescent Current
Photo: This series of AEC-Q100-qualified low-dropout voltage regulators includes tracking LDOs with high tracking accuracy and protected outputs, capable of direct connection to vehicle batteries thanks to their wide input voltage tolerance.
See the full story…
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NEW ON HOW2POWER.COM
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Calendar of Events — Over 300 Listings For 2025
HOW2POWER’s Events Calendar lists selected conferences, tradeshows, workshops and webinars related directly or indirectly to power electronics. Our calendar currently lists over 300 of the electronics industry’s top events for 2025.
Visit this section …
Also see How2Power’s recently updated 2025 Space Conferences list.
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INDUSTRY EVENTS
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CMSE Finalizes Keynote Speakers And Program
The 28th Annual Components for Military and Space Electronics (CMSE) Conference and Exhibit has finalized the keynote talks, speaker presentations and tutorial programs for this year’s conference, which will be held April 29- May 1 at the Four Points by Sheraton LAX in Los Angeles. Exhibits will be on April 30 and May 1, 2025. The emphasis will be on “component engineering for the next generation electronic components and new technology insertion” to support the supply chain for military, defense, and space applications. Read the full story…
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PCIM Expo & Conference 2025: Two New Halls To Meet Increased Demand
From May 6 to 8, 2025, the PCIM Expo & Conference, a leading international exhibition and conference for power electronics, returns to Nuremberg, Germany. With over 600 exhibitors and more than 450 presentations, this hub for the power electronics industry will offer a comprehensive program for trade visitors. With two months still to go, this exhibition and conference for power electronics, intelligent motion, renewable energy, and energy management already has 606 registered exhibitors, with 61% from international companies. Lisette Hausser, vice president PCIM at Mesago Messe Frankfurt, says, “The considerable interest from suppliers demonstrates the high relevance of the exhibition and presentation program with topics covering the entire power electronics value chain.” Read the full story…
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ITEC 2025: Learn, Network And Solve Problems In Transportation Electrification
Now in its 14th year, ITEC has served as IEEE’s premier conference on transportation electrification, fostering connections between industry and academia. This year’s conference will be held from June 18-20, 2025, at the Anaheim Marriott, in Anaheim, California. ITEC is aimed at helping the industry in the transition from conventional vehicles to advanced electrified vehicles. The conference is focused on components, systems, standards, and grid interface technologies, related to efficient power conversion for all types of electrified transportation, including electric vehicles, hybrid electric vehicles, and plug-in hybrid electric vehicles as well as heavy-duty, rail, and off-road vehicles, and airplanes and ships. Read the full story…
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A novel resonant, auto-adjusting rectifier developed by researchers at Incheon National University Study can enhance efficiency of wireless charging via dynamic frequency adaptation.
Cambridge GaN Devices has closed a round of $32 million series C funding to expand its operations in Cambridge, North America, Taiwan and Europe.
Danisense, a supplier of high-accuracy current sense transducers, has integrated new state-of-the-art winding machines into its rapid prototyping setup, enabling highly customized coil configurations to be produced in-house.
In the wake of reports of restructuring and layoffs, onsemi has announced a proposal to acquire Allegro MicroSystems.
EOS/ESD Association Services has announced a strategic partnership with SRF Technologies, bringing together expertise to deliver comprehensive ESD and EOS diagnostic and resolution services.
ITC has barred importation of power modules and unlicensed computing systems that infringe Vicor patents.
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