EPC技術文章

功率半導體戰爭開始了

氮化鎵(GaN)及碳化矽(SiC)元件的價格下調,對客戶而言,更為吸引。多家供應商推出基於氮化鎵及碳化矽的功率半導體,摩拳擦掌,正在爆發新一輪的半導體大戰,全速進攻傳統矽基元件的市場份額。

Semiconductor Engineering
2019年10月
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氮化鎵技術正在改造醫療護理

氮化鎵技術為業界實現以前不可能達到的目標。EPC公司的Alex Lidow闡析醫療護理如何更好地利用氮化鎵技術,實現重大的改進。

Electronic Specifier
2019年8月
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DC-DC Conversion for 48 V – 12 V Automotive Applications

GaN transistors, with favorable figures of merit (FOM) for 48 V applications, can provide a reduction in size, weight, and bill of material costs. This article presents a five-phase, fully regulated, bidirectional 48 V to 12 V DC-DC converter. An advancedthermalmanagement solution suitable for use with eGaN FETs results in a system that can provide 3kW of power at an efficiency exceeding 97.5% into a 14.5 V battery.

Power Systems Design
July, 2019
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GaN Powers Small Satellites

Small satellites bring a more cost-effective approach to low-Earth-orbit (LEO) missions, helping to deliver low-cost internet access across the globe. For this application, GaN FETs partnered with a radiation tolerant pulse width modulation controller and GaN fet driver allow more efficient switching, higher frequency operation, reduced gate drive voltage and smaller solution sizes compared to the traditional silicon counterparts.

Electronics Weekly
July, 2019
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數據中心的發展於2019年將進入突飛猛進的時代

根據預測,到2025年,我們的數據將會超過175 zettabyte。當發明了 5G並將最早於2020年在日本舉行的奧運採用、以及通過人工智慧(AI)及機器學習(ML)的發展,建立數據中心和其部署、以及提升目前較舊的數據中心的效能,將進入突飛猛進的時代。

我深信氮化鎵(GaN)功率電晶體是數據中心功率架構的最理想元件,因為需要小型化、高效及快速開關的元件。氮化鎵元件在具48 VIN的所有拓撲,都可以實現最高的效率。

EDN
2019年6月
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氮化鎵正面攻擊矽功率MOSFET元件

目前的氮化鎵場效應電晶體在尺寸及性能方面以飛快的速度發展,而目前為業界樹立基準的氮化鎵元件的性能還可以提升多300倍。

最早採用氮化鎵元件的應用是利用氮化鎵的超快速開關速度,例如面向全自動駕駛車輛和無人機的雷射雷達系統、機械人,以及4G/LTE基站。氮化鎵元件的產量一直在增加,而其價格跟開關速度更慢、尺寸更大型和日益陳舊的MOSFET元件相約。因此,目前正是氮化鎵元件正面攻擊MOSET的時候!。

Bodo’s Power Systems
2019年6月
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Thermal design for a high density GaN-based power stage

eGaN FETs and ICs enable very high-density power converter design, owing to their compact size, ultra-fast switching, and low on-resistance. The limiting factor for output power in most high-density converters is junction temperature, which prompts the need for more effective thermal design. The chip-scale packaging of eGaN FETs and ICs offer six-sided cooling, with effective heat extraction from the bottom, top, and sides of the die. This article presents a high-performance thermal solution to extend the output current capability of eGaN-based converters.

EDN
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The Amazing New World of Gallium Nitride

From the heart of Silicon Valley comes a new buzzword. Gallium nitride is the future of power technology. Tech blogs are touting gallium nitride as the silicon of the future, and you are savvy enough to get in on the ground floor. Knowing how important gallium nitride is makes you a smarter, better consumer. You are at the forefront of your peer group because you know of an up and coming technology, and this one goes by the name of gallium nitride.

HACKADAY
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EPC: Ahead of the Pack

EPC's chief executive, Alex Lidow, believes his GaN devices now beat silicon on performance and price, reports Rebecca Pool.

For EPC chief executive, Alex Lidow, this year's PCIM Europe 2019 has been all about applications. Presenting myriad enhanced-mode GaN FETs and ICs in end-products, the company is making a big play for 48 V DC-DC power conversion in advanced computing and automotives.

Compound Semiconductor
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PCIM Europe – where power is at the core of innovation

This year’s PCIM Europe was attended by a record number of visitors, over 12,000. Over half (54%) were from outside Germany. They came to see over 500 exhibitors and while the subject matter was diverse and wide-ranging, there were some themes that emerged. GaN and SiC jostled for attention at this year’s PCIM Europe. Showing the potential that GaN has already realised, Efficient Power Conversion (EPC) had a stand that was well-stocked with examples of the eGaN FET technology that the company introduced in 2009.

Electronic Specifier
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氮化鎵技術可以提升面向伺服器及汽車應用的48 V DC/DC 功率轉換的效率

宜普電源轉換公司(EPC)推出兩個全新100 V氮化鎵元件,可以支援伺服器及汽車應用的48 V轉換的要求。 我將在處理器、車用及能量存儲系統等方面探討48 V伺服器的功率轉換解決方案(可參考我的文章 “雙向DC/DC電源供電: 我們應該如何取向?”),未來將在EDN文章中看到。氮化鎵功率電晶體必需是這些不同架構的一部份 -- 我相信沒有其他更優越的元件可以替代氮化鎵元件了 。

Planet Analog
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APEC 2019影片

宜普電源轉換公司的基於氮化鎵的元件乃前沿技術。在本影片,宜普公司的首席執行長Alex Lidow於APEC展會現場與 Alix Paultre分享多個design in項目,從而展示基於氮化鎵的元件的各種優勢。

Embedded Computer Design
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EPC partners with Würth Elektronik eiSos to present Trilogy of Wireless Power Transfer

The Trilogy of Wireless Power Transfer consists of three parts: Basics Principles of Wireless Power Transmission, Wireless Power Transfer Systems and Applications. The first part of the book explains the basic physical principles and the different methods of contactless power transmission. Furthermore, the leading standards are presented in this part. The second part describes wireless power transfer systems, the different topologies of wireless power transmission, the right selection of transmitter and receiver coils required to increase efficiency, and the selection of transistors, for instance. The third part is dedicated to practical applications. This includes applications within the scope of the Qi standard, as well as examples of proprietary solutions. An overview of EMI-relevant topics for closely and loosely coupled systems, as well as an example of a multimode wireless power transmission system round out the practical part. The authors of the "Trilogy of Wireless Power Transfer" are Cem Som, Division Manager Wireless Power Transfer at Würth Elektronik eiSos; and Dr. Michael de Rooij, Vice President Applications Engineering at Efficient Power Conversion Corporation, Inc. The book costs 19 euros and can be ordered from Würth Elektronik eiSos or through bookstores.

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矽已經死亡

宜普電源轉換公司首席執行長兼共同創辦人Alex Lidow於APEC 2019展覽會的Ridley Engineering展覽攤位進行演講,題目是“矽已經死亡”。

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PSDtv - EPC on Why Silicon is Dead at APEC 2019

In this episode of PSDtv Alex Lidow, Chief Executive Officer and Co-Founder of Efficient Power Conversion (EPC) is at APEC 2019 in Anaheim and discusses why their GaN on Silicon devices make Silicon now dead.

PSDtv
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It's Time to Rethink Power Semiconductor Packaging

When the issue invariably turns to the packaging of the power semiconductor – transistor, diode, or integrated circuit – the requests for improvement fall into six categories:

1. Can you make the package smaller?
2. Can you reduce the package inductance?
3. Can you make the product with lower conduction losses?
4. Can you make the package more thermally efficient?
5. Can you sell the product at a lower price?
6. Can you make the package more reliable?

Powering graphics processors from a 48-V bus

New converter topologies and power transistors promise to reduce the size and boost the efficiency of supplies that will run next-generation Artificial Intelligence (AI) platforms. In all the topologies with 48 VIN, the highest efficiency comes with using GaN devices. This is due to their lower capacitance and smaller size. With recent pricing declines in GaN power transistors, the cost comparison with silicon-based converters now strongly favors GaN in all the leading-edge solutions.

Power Electronic Tips
March, 2019
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The Power and Evolution of GaN, Part 6: GaN Technology Adoption and Roadmap

In the final installment of this series, how GaN has met the requirements to displace silicon is explored. As the adoption rate of GaN explodes, it is important to remember that, while GaN has made many advancements in just a few short years, it is still far from its theoretical performance limitations and thus there are profound improvements that can continue to be achieved. In time, the performance and cost advantages of GaN-on-silicon will result in a majority of applications currently using silicon-based devices converting to the smaller, faster, cheaper, and more reliable GaN technology.

Power Systems Design
February, 2019
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GaN 的功率和演變- 第5部分:採用eGaN FET和積體電路構建低成本、高效的12 V - 1 V 負載點轉換器

氮化鎵元件對提升主流應用的效率的貢獻很大,例如在傳統矽基12 V - 1 V負載點 DC/DC轉換器。基於eGaN積體電路的12 V轉到1 V、12 A負載轉換器在5 MHz的頻率下,可以實現78%峰值效率及1000 W/in3 功率密度,而成本則低於每瓦0.2美元。

Power Systems Design
2019年1月
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為什麼採用氮化鎵元件?

氮化鎵技術已經成熟至可以挑戰傳統的矽技術。從2010年起,商用的低壓矽基氮化鎵功率元件實現了很多全新應用。具備高速開關性能的氮化鎵元件也推動了全新市場的出現,例如雷射雷達、波峰追蹤及無線電源市場。這些全新應用有助供應鏈的開發、實現低製造成本及良好的元件可靠性記錄。這一切對於比較保守的DC/DC轉換器、AC/DC轉換器及車載應用的設計工程師來說,是很好的理據,是時候開始對氮化鎵元件進行評了。本文探討加快採納氮化鎵元件的各項因素。

Electronics Weekly
2019年1月
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