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功率系統採用GaN的5大誤區

功率系統採用GaN的5大誤區

我們將在本文討論客戶爲何遲遲未採用氮化鎵技術的一些最常見原因,氮化鎵技術顯然是較舊的矽基功率MOSFET的替代技術。在不深入詳細研究統計數據的情况下,按最常發生推導出一系列原因,並理解某些應用比其他應用更側重氮化鎵技術的某些特性。我們的討論僅限於額定電壓低於400 V的元件,因爲這是EPC公司的氮化鎵場效應電晶體和積體電路的重點應用。

PSD功率系統設計
2022 年3月
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Better thermal management of eGaN FETs

Better thermal management of eGaN FETs

A few simple thermal management guidelines can help conduct heat away from GaN FETs. Enhancement-mode gallium nitride (eGaN) FETs offer high power-density with ultra-fast switching and low on-resistance, all in a compact form factor. However, the power levels these high-performance devices provide can be limited by extreme heat-flux densities. If not managed properly, the generated heat can compromise reliability and performance. Fortunately, chip-scale packaging for eGaN FETs can be leveraged at the board-side and the backside (i.e., case) to better dissipate heat.

Power Electronics Tips
February, 2022
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Automotive Buck/Reverse-Boost Converter with GaN for Efficient 48 V Power Distribution

Automotive Buck/Reverse-Boost Converter with GaN for Efficient 48 V Power Distribution

Demonstrating the design of a bi-directional DC-DC converter for automotive 48 V power distribution, showing how GaN technology is a powerful enabler for efficient electrification. The trend towards increasing electrification in the automotive industry enables car makers both to deliver new innovations to market cost-effectively and to meet increasingly stringent emissions legislation. Raising the vehicle’s main bus voltage to 48 V helps meet the demands of power-hungry systems such as the start-stop motor/generator of a mild hybrid vehicle, as well as loads such as electric power steering, electric supercharging, and vacuum and water pumps.

Bodo’s Power Systems
December, 2021
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面向高功率密度應用的ePower晶片組系列被選爲Bodo‘s Power Systems“二月卓越產品”

面向高功率密度應用的ePower晶片組系列被選爲Bodo‘s Power Systems“二月卓越產品”

EPC公司推出了100 V、65 A 集成電路晶片組,專爲48 V DC/DC轉換而設計,用於高密度計算應用,以及用於電動汽車、機器人和無人機的 48 V BLDC馬達控制器。EPC23101 eGaN IC配合EPC2302 eGaN FET成爲ePower晶片組,其最大耐受電壓爲 100 V,提供高達65 A的負載電流,開關速度大於1 MHz。

Bodo’s Power Systems
2022 年 2 月
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CES 2022: GaN Technology for the Next Future

CES 2022: GaN Technology for the Next Future

The year 2021 was a transitional year in which the world decided to open its doors to GaN. In this interview with Power Electronics News during CES week, GaN industry experts confirmed that GaN is now proving its superiority over silicon.

Power Electronics News
January, 2022
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GaN Devices for Smaller, Lighter, Smoother Motor Drives

GaN Devices for Smaller, Lighter, Smoother Motor Drives

Today, the permanent magnet motor, also known as DC brushless motor (BLDC), is widely used and offers higher torque capability per cubic inch and higher dynamics when compared to other motors. So far, silicon-based power devices have been dominant in the inverter electronics, but today their performance is nearing their theoretical limits. There is an increasing need for higher power density. Gallium nitride (GaN) transistors and ICs have the best attributes to satisfy these needs.

Power Systems Design
November, 2021
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Motor Driver Applications in Space

Motor Driver Applications in Space

As the outer reaches of the Earth’s atmosphere and space are opened to commercial development, motors will become increasingly important to systems places there for various functions. With the inevitability of manufacturing in space, motors – including their drivers – will take on even more functions. Of equal importance will be the motor drivers selected to drive those motors efficiently and reliably.

Components in Electronics
October, 2021
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LiDAR System Design of ToF Laser Driver with GaN

LiDAR System Design of ToF Laser Driver with GaN

The new gallium nitride (GaN) family aims to deliver time-of-flight (ToF) applications for autonomous cars and 3D sensing across the consumer and industrial sectors. In an interview with EE Times, Alex Lidow, CEO at EPC, highlighted how introducing the eToF Laser Driver family’s for LiDAR system design at a low cost competes with the Mosfet when it comes to LiDAR applications.

EEWeb
September, 2021
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應對用於超薄計算應用的超薄、具高功率密度的 48 V DC/DC 轉換器的電源和磁性設計挑戰

應對用於超薄計算應用的超薄、具高功率密度的 48 V DC/DC 轉換器的電源和磁性設計挑戰

在過去十年中,計算機、顯示器、智能手機和其他消費電子系統變得更薄,同時功能也變得更强大。因此,市場對具有更高功率密度的更薄電源解决方案的需求不斷增加。本文研究了額定功率爲 250 W、超薄的48 V / 20 V轉換器,它可以採用各種非隔離型 DC/DC 降壓拓撲的可行性。我們研究了各種非隔離型拓撲的優缺點,從而瞭解拓撲如何影響功率電晶體和磁性元件的選擇,特別是電感器,因爲這兩個元件產生轉換器的大部分損耗。本文還詳細分析了爲這些應用設計薄型電感器所面對的挑戰,包括電感器損耗的因素、電感器尺寸和設計權衡,包括對EMI的影響。我們是以選擇、構建和測試了超薄多電平轉換器拓撲。從該轉換器獲得的實驗結果,用於進一步優化操作設置和元件的選擇,從而實現超過98%的峰值效率。

EPC公司Michael de Rooij
Würth Elektronik 公司Quentin Laidebeur

IEEE Power Electronics Magazine
2021年9月
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Bodo 寬能隙專家演講 – 氮化鎵半導體專題 - 2021 年 6 月

Bodo 寬能隙專家演講 – 氮化鎵半導體專題 - 2021 年 6 月

由 Bodo Power Systems 主辦的氮化鎵行業專家圓桌會議的嘉賓包括:

  1. EPC公司的首席執行長兼共同創始人Alex Lidow
  2. Power Integrations公司的市場行銷與應用工程副總裁Doug Bailey
  3. Nexperia 公司的氮化鎵功率技術行銷戰略總監Dilder Chowdhury
  4. Navitas Semiconductor公司的市場行銷戰略高級總監Tom Ribarich
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