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Evaluation of measurement techniques for high speed GaN transistors

Evaluation of measurement techniques for high speed GaN transistors

The increase in switching speed offered by GaN transistors requires good measurement technology, as well as good techniques to capture important details of high-speed waveforms. This article focuses on how to leverage the measurement equipment for the user’s requirement and measurement techniques to accurately evaluate high performance GaN transistors. The article also evaluates high bandwidth differential probes for use with non-ground-referenced waveforms.

EDN Network
By Suvankar Biswas , David Reusch & Michael de Rooij
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Categories: Articles

eGaN vs. Silicon - Comparing Dead-time Losses for eGaN FETs and Silicon MOSFETs in Synchronous Rectifiers

eGaN vs. Silicon - Comparing Dead-time Losses for eGaN FETs and Silicon MOSFETs in Synchronous Rectifiers

There have been several comparisons of eGaN FETs with silicon MOSFETs in a variety of applications, including hard-switched, soft-switched, and high-frequency power conversion. These studies have shown that eGaN FETs have large efficiency and power density advantages over silicon MOSFETs. Here we’ll focus on the use of eGaN FETs in synchronous rectifier (SR) applications and the importance of dead-time management. We show that eGaN FETs can dramatically reduce loss due to dead-time in synchronous rectifiers above and beyond the benefits of low RDS(on)and charge.

Power Systems Design
By: Dr. John Glaser & Dr. David Reusch, Efficient Power Conversion
June 13, 2016
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15 MHz Half-Bridge Development Boards Use EPC's eGaN FETs and High Frequency Synchronous Bootstrap Topology

15 MHz Half-Bridge Development Boards Use EPC's eGaN FETs and High Frequency Synchronous Bootstrap Topology

EPC’s new development boards can be configured as either a buck converter or a ZVS class-D amplifier, demonstrating reduced losses at high frequency using an eGaN FET synchronous bootstrap augmented gate drive.

EL SEGUNDO, Calif.— March 2016 — Efficient Power Conversion Corporation (EPC) Introduces the EPC9066, EPC9067, and EPC9068 development boards, which are configurable to a buck converter or as a ZVS class-D amplifier. These boards provide an easy-to-use way for power systems designers to evaluate the exceptional performance of gallium nitride transistors, enabling the designers to get their products into volume production quickly. All three boards feature a zero reverse recovery (QRR) synchronous bootstrap rectifier augmented gate driver to increase efficiency at high frequency operation, up to 15 MHz. The boards can produce a maximum output of 2.7 A in the buck and ZVS class-D amplifier configurations. Loss reduction is realized across the entire current range.

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Categories: Press Releases

Efficient Power Conversion (EPC) Introduces Enhancement Mode 450 V Gallium Nitride Power Transistors for High Frequency Applications

Efficient Power Conversion (EPC) Introduces Enhancement Mode 450 V Gallium Nitride Power Transistors for High Frequency Applications

EPC2027 eGaN® FET offers power systems designers a 450 V power transistor capable of 4ns rise times for high frequency DC-DC converters and medical diagnostic instruments.

EL SEGUNDO, Calif. — January 2015 — EPC announces the EPC2027, a 450 V normally off (enhancement mode) power transistor for use in applications requiring high frequency switching in order to achieve higher efficiency and power density. Applications enhanced by high voltage higher switching speeds include ultra-high frequency DC-DC converters, medical diagnostic equipment, solar power inverters, and LED lighting.

The EPC2027 has a voltage rating of 450 V and maximum RDS(on) of 400 mΩ with a 4 A output. It is available in passivated die form with solder bars for efficient heat dissipation and ease of assembly. The EPC2027 measures 1.95 mm x 1.95 mm for increased power density.

“As off-line adapters and inverters increasingly push toward smaller size, less weight, and higher power density, the demand for corresponding higher voltage and faster switching speeds is increasing. The 450 V EPC2027 allows power designers to increase the switching frequency of their off-line power conversion systems for increased efficiency and smaller footprint,” said Alex Lidow, EPC’s co-founder and CEO.

Development Board

The EPC9044 development board, featuring the EPC2027, is in a half bridge configuration with on board gate driver, gate drive supply and bypass capacitors. This 2” x 1.5” board has been laid out for optimal switching performance and contains all critical components for easy evaluation of the EPC2027 eGaN® FET.

Price and Availability

The EPC2027 eGaN FETs are priced for 1K units at $5.81 each

The EPC9044 development boards are priced at $137.75 each

Both are available for immediate delivery from Digi-Key at http://www.digikey.com/Suppliers/us/Efficient-Power-Conversion.page?lang=en

Design Information and Support for eGaN FETs:

About EPC

EPC is the leader in enhancement mode gallium nitride based power management devices. EPC was the first to introduce enhancement-mode gallium-nitride-on-silicon (eGaN) FETs as power MOSFET replacements in applications such as DC-DC converters, Read more

Categories: Press Releases

How to GaN: Generation 4 eGaN FETs – Widening the Performance Gap with the Aging MOSFET

In this installment of the ‘How to GaN’ series we will discuss a new family of eGaN FETs that is keeping Moore’s Law alive with significant gains in key switching figures of merit that widen the performance gap with the power MOFET in high frequency power conversion.

EEWeb
By: Alex Lidow
October, 2014

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IEEE Power Electronics Society (PELS) Webinar, “Using Gallium Nitride (GaN) FETs for Envelope Tracking Buck Converters”

On September 3rd IEEE PELS will offer a webinar by Dr. Johan Strydom discussing the contribution of gallium nitride power transistors to meet the demanding system bandwidth requirements of envelope tracking applications.

EL SEGUNDO, Calif.— August 2014 — An Efficient Power Conversion Corporation (EPC) expert on the application of gallium nitride transistors in envelope tracking power circuit design will conduct a one-hour webinar sponsored by the IEEE Power Electronics Society (PELS) on September 3rd from 11:00 AM to 12:00 AM (EDT).

Discrete GaN power devices offer superior hard-switching performance over MOSFETs and are crucial for the development of switching converters for envelope tracking. In this seminar, the latest family of high frequency enhancement-mode gallium nitride power transistors on silicon (eGaN® FETs) will be presented in a few multi-megahertz buck converters. The different system-level parasitics will be discussed and their impact evaluated based upon the experimental results.

The presenter will be Johan Strydom, EPC Vice President of Applications Engineering. Dr. Strydom is widely published in the industry, including being co-author of GaN Transistors for Efficient Power Conversion, the first textbook on the design and applications of gallium nitride transistors.

Webinar Registration Information:

Title: Using Gallium Nitride (GaN) FETs for Envelope Tracking Buck Converters
Date: Wednesday, September 3, 2014
Time: 11:00 AM – 12:00 AM (EDT)
Registration:http://www.ieee-pels.org/products/pels-upcoming-webinars/2483-ieee-pels-webinar-series-using-egan-fets-for-envelope-tracking-buck-converters-by-johan-strydom
Fee: Free of Charge

About IEEE Power Electronics Society (PELS)

The Power Electronics Society is one of the fastest growing technical societies of the Institute of Electrical and Electronics Engineers (IEEE). For over 20 years, PELS has facilitated and guided the development and innovation in power electronics technology. This technology encompasses the effective use of electronic components, the application of circuit theory and design techniques, and the development of analytical tools toward efficient conversion, control and condition of electric power.

About EPC

EPC is the leader in enhancement mode gallium nitride based power management devices. EPC was the first to introduce enhancement-mode gallium-nitride-on-silicon (eGaN) FETs as power MOSFET replacements in applications such as DC-DC converters, wireless power transfer, envelope tracking, RF transmission, power inverters, remote sensing technology (LiDAR), and Class-D audio amplifiers with device performance many times greater than the best silicon power MOSFETs.

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Categories: Press Releases

WiGaN: eGaN FETs for Hard-Switching Converters at High Frequency

This article presents hard-switching buck converter results switching at 10 MHz and gives a breakdown of the converter losses. It will demonstrate the unmatched high frequency performance capability currently available using eGaN® FETs and also highlight the current limitations to pushing to even higher switching frequencies.

EEWeb
By: Alex Lidow
August, 2014

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Comparison of Silicon Versus Gallium Nitride FETs for the Use in Power Inverters for Brushless DC Servo Motors

Since the Robotics and Mechatronics Institute is highly interested in the improvement of sensor and power electronics, we used the opportunity of this new robot development to evaluate the new enhancement mode Gallium Nitride FET technology from EPC and compare it with our up to this time best inverter design.

Bodo’s Power Systems
By Robin Gruber, German Aerospace Center (DLR)
March, 2014

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Efficient Power Conversion (EPC) to Present Gallium Nitride (GaN) Technology for High Frequency Resonant and Envelope Tracking Power Supplies at the 2014 Applied Power Electronics and Exposition Confe

At the IEEE APEC 2014 power electronics industry conference, EPC applications experts will make technical presentations on GaN FET technology and applications showing the superiority of GaN transistors compared to silicon power MOSFETs.

EL SEGUNDO, Calif. — February, 2014 — Efficient Power Conversion Corporation, the world’s leader in enhancement-mode gallium nitride on silicon (eGaN®) power FETs will be presenting three application-focused technical presentations at APEC 2014. Participants will learn about high frequency resonant converter, and high-frequency, hard-switched power converter design. The conference will be held in Fort Worth, Texas from March 16th through the 20th.

The Premier Event in Applied Power Electronics™, APEC, focuses on the practical and applied aspects of the power electronics business. It is the leading conference for practicing power electronics professionals addressing a broad range of topics in the use, design, manufacture and marketing of all kinds of power electronics components and equipment. For more information on APEC go to: http://www.apec-conf.org/

“We are honored that the technical review committee of APEC 2014 has selected EPC experts to give technical papers focusing on GaN technology at their annual conference. This selection supports our belief that the superior performance of GaN technology has gained the interest and acceptance of power system design engineers,” said Alex Lidow, EPC’s co-founder and CEO.

Technical Presentations Featuring GaN FETs by EPC Experts:

Attendees interested in meeting with EPC applications experts during the event can send a request to [email protected].

About EPC

EPC is the leader in enhancement mode gallium nitride based power management devices. EPC was the first to introduce enhancement-mode gallium-nitride-on-silicon (eGaN) FETs as power MOSFET replacements in applications such as Read more

Categories: Press Releases

How To GaN: eGaN®FETs for High Frequency Wireless Power Transfer

A highly resonant, loosely coupled, 6.78 MHz ISM band wireless power transfer will be presented that show how eGaN FETs are enabling this technology. This column will show efficient wireless energy transfer using current eGaN FETs, and present examples of a voltage mode class D and class E approach.

EEWeb
By: Alex Lidow
January, 2014

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Professional Quality Sound with 96% Power Efficiency – EPC Demonstration Board Featuring eGaN® FETs Delivers High Quality Audio Performance in Space Saving Design

EPC9106 Class D audio amplifier reference design, using high frequency switching gallium nitride power transistors, demonstrates efficiency enhancement, size reduction and eliminates need for a heat sink while delivering prosumer quality sound.

EL SEGUNDO, Calif. — November 2013 — Efficient Power Conversion Corporation (EPC) introduces the EPC9106, a reference design for a 150 W, 8 Ω Class D audio amplifier. This demonstration board uses a Bridge-Tied-Load (BTL) design, composed of four ground-referenced half-bridge output stages, which allows scalability and expandability of the design. All elements that can impact the sonic performance of Class D Audio systems are minimized or eliminated in an eGaN FET-based system.

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Categories: Press Releases

Package Considerations for High Frequency Power Conversion Devices

Power conversion at switching frequencies of 10 MHz and above requires both high-speed transistors and high frequency capable packaging. eGaN FETs have demonstrated their ability to improve high frequency power conversion compared with the aging power MOSFET by providing unmatched device performance as well as packaging.

Bodo’s Power Systems
Guest Editorial: Alex Lidow
November, 2013

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