低压 GaN FET 可实现更小、冷却要求最小化和效率更高的解决方案

与采用传统的硅基功率 MOSFET的应用相比，低压 GaN FET（即 100 V）可实现更小，冷却要求最小化和效率更高的解决方案。 本文讨论了氮化镓器件如何应对动态性能需要重复且可靠的表征的挑战。 定制氮化镓夹具和测试板的机械和电气设计仔细、周全，就可以克服其中许多挑战，使您能够在设计功率转换器时，自信地使用这些新型宽能隙器件。

Power Electronics News
2023年7月
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Efficient Power Conversion (EPC) expands its family of radiation-hardened (rad-hard) gallium nitride (GaN) products for power conversion solutions with two new 40 V devices rated at 62 A and 250 A to address critical spaceborne and other high-reliability applications.

EL SEGUNDO, Calif.— July 2023 — EPC announces the introduction of two new 40 V rated radiation-hardened GaN FETs.EPC7001 is a 40 V, 4 mΩ, 250 A_Pulsed, rad-hard GaN FET in a small 7 mm² footprint. EPC7002 is a 40 V, 14.5 mΩ, 62 A_Pulsed, rad-hard GaN FET in a tiny 1.87 mm² footprint.  Both devices have a total dose radiation rating greater than 1,000K Rad(Si) and SEE immunity for LET of 83.7 MeV/mg/cm² with V_DS up to 100% of rated breakdown. These new devices, along with the rest of the Rad Hard family, are offered in a chip-scale package.  Packaged versions are available from EPC Space.

Transient voltage overshoot is a common phenomenon in GaN high electron mobility transistors (HEMTs) under high slew rate switching conditions. The dynamic parametric instability under such stress is a critical concern for GaN applications. This work, for the first time, accurately characterized the evolution of dynamic on-resistance (R_DS(on)) in GaN HEMTs under repetitive voltage overshoot up to billions of switching cycles. The dynamic R_DS(on) increase was found to be the dominant device degradation under overvoltage switching. Such findings were obtained from a high-frequency, repetitive, unclamped inductive switching (UIS) test with active temperature control and accurate in-situ R_DS(on) monitoring. A physics-based model was proposed to correlate the dynamic R_DS(on) drift with the peak overvoltage, and a good agreement with experimental data was achieved. This model was further used to project the lifetime of GaN HEMTs. For 100 V rated GaN HEMTs switched under 100 kHz and 120 V spikes, the model projects less than 10% dynamic R_DS(on) shift over 25 years of continuous operation. This work addresses the major concerns of overvoltage switching reliability of GaN HEMTs and provides new insights of the electron trapping mechanism.

IEEE Xplore
Ruizhe Zhang, Ricardo Garcia, Robert Strittmatter, Yuhao zhang, Shengke Zhange
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2023年7月3日中国商务部宣布8月起对镓、锗相关物项的出口实施管制。宜普电源转换公司的晶圆技术是硅基氮化镓，尽管每个器件中有其微量镓含量，相对全球镓来源广泛，宜普的需求相对较小。我们预计不会出现短期或长期的供应中断。

事实证明，15 V ~ 350 V 氮化镓异质结场效应功率晶体管在功率转换、电机驱动和激光雷达等应用中，无论是在效率、尺寸、速度和成本方面都比硅器件更具优势 。氮化镓集成电路为许多高频应用提供了多方面的系统级优势。 氮化镓集成电路才刚刚发展，其优势肯定会随着其技术发展而不断增强。

Bodo’s Power Systems
2023年6月
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宜普电源转换公司(EPC)是增强型氮化镓 (GaN) FET 和 IC产品的领导者，在纽伦堡举行的 PCIM Europe 2023展会上分享了关于氮化镓技术的发展和其应用的演示。 我们与该公司的联合创始人兼首席执行官 Alex Lidow 就电力电子行业和氮化镓技术对行业的影响进行了深度交流。

Electronic Design
2023年5月
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In this episode of Spirit: Behind the Screen, Spirit Electronics CEO Marti McCurdy chats with EPC’s CEO Alex Lidow and Marketing Director Renee Yawger about the progress of GaN. They discuss GaN’s performance under high radiation as well as the extensive testing, failure modes and device lifespan detailed in EPC’s Phase 15 reliability report. With the full potential of GaN still to be explored and new EPC products releasing frequently, including new half-bridge drivers, low-side drivers and full power stage, GaN is especially useful in New Space and commercial space applications.

Spirit: Behind the Screen
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案例聚焦新一代替代硅技术

(加利福尼亚州，埃尔塞贡多）--氮化镓（GaN）技术的全球领导者宜普电源转换公司（Efficient Power Conversion Corporation, EPC）于今日向美国联邦法院和美国国际贸易委员会（U.S. International Trade Commission, ITC）提起诉讼，主张其基础专利组合中的四项专利受到英诺赛科（珠海）科技有限公司及其子公司（统称英诺赛科）侵犯。 这些专利涵盖了宜普公司独家的增强型氮化镓功率半导体器件的设计和制造工艺的核心环节。这些专利是创新技术，已成功将基于氮化镓的功率器件从一个研究项目，发展成为一个可大批量生产的替代硅产品。使用氮化镓器件的晶体管和集成电路，较使用硅基器件而言更高效，更小型，成本更低。

Monolithic GaN integration has matured to the point that complex circuits such as a half bridge gate driver with various features can now be realized. This article will cover DC-to-DC and BLDC motor drive application examples that benefit from monolithic half-bridge integration.

Power Electronics News
May, 2023
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基于氮化镓器件的EPC9186逆变器参考设计增强了高功率应用的电机系统性能、精度、扭矩和可实现更长的续航里程。

宜普电源转换公司(EPC)新推EPC9186，这是一款采用EPC2302 eGaN^®FET的三相BLDC电机驱动逆变器。EPC9186支持14 V~ 80 V的宽输入直流电压。大功率EPC9186支持电动滑板车、小型电动汽车、农业机械、叉车和大功率无人机等应用。

Modern solar panels are demanding increasingly higher power density and longer operating lifetimes. Solar applications including power optimizers and panels with built-in microinverters are becoming the prevailing trend for an increasing number of solar customers, where low voltage GaN power devices (V_DS < 200 V) are extensively used.

Bodo’s Power Systems
May, 2023
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Gallium nitride (GaN) transistors and ICs have the best attributes to satisfy BLDC inverter needs. The superior switching capability of GaN helps to remove dead time and increase PWM frequency to obtain unmatched sinusoidal voltage and current waveforms for smoother, silent operation with higher system efficiency

Power Systems Design
May, 2023
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宜普电源转换公司(EPC)和Analog Devices(ADI)公司携手新推的参考设计采用经过全面优化的新型模拟控制器来驱动EPC的氮化镓场效应晶体管，可实现超过96.5%的效率。

宜普电源转换公司(EPC)宣布新推EPC9158，这是一款工作在500 kHz开关频率的双输出同步降压转换器参考设计，可将48 V~54 V的输入电压转换为12 V稳压输出，可提供高达每相25 A电流或50 A总连续电流。ADI的新型LTC7890同步氮化镓降压控制器与EPC的超高效GaN FET相结合，可为高功率密度应用提供占板面积小且非常高效的解决方案。该解决方案在48 V/12 V 、50 A连续电流下可实现 96.5%的效率。

EPC’s GaN Experts will be available during PCIM Europe 2023, showcasing the latest generation of GaN FETs and ICs in a wide variety of real-world applications.

EL SEGUNDO, Calif. — April 2023 — — EPC, the world’s leader in enhancement-mode gallium nitride FETs and ICs,will be delivering multiple technical presentations on GaN technology and showcasing applications at PCIM Europe 2023 in Nuremburg, 09 – 11 May (see detailed schedule below). In addition, the company will demonstrate its latest eGaN^® FETs and ICs in a large variety of customer end products in Hall 9, Stand 318.

In this episode of The EEcosystem Podcast, our guest is Dr. Alex Lidow, CEO and co-founder of Efficient Power Conversion. In this episode, we will find out more about Alex and learn about MOSFETs and the rise of GaN. How did MOSFETs grow so quickly? What technologies are driving GaN adoptions and why. We will also discuss the potential obstacles to GaN adoption. This and many more questions will be answered as we go along! Listen to this episode to learn more!

April, 2023
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This article discusses the advantages of GaN-based power stages and introduces a sample device from EPC, implemented in a half-bridge topology. It explains how to use associated development kits to quickly get started on a project. In the process, designers will learn how to measure the parameters of a BLDC motor and operate it in sensorless field orientation control (FOC) with minimal programming effort using Microchip Technology’s motorBench Development Suite.

Digi-Key Electronics
April, 2023
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Efficient Power Conversion (EPC) expands its family of radiation-hardened (rad-hard) gallium nitride (GaN) products for power conversion solutions with two new devices rated at 100 V and 200 V to address a multitude of critical spaceborne and other high-reliability .

EL SEGUNDO, Calif.— April 2023 — EPC announces the introduction of two new radiation-hardened GaN FETs. The EPC7020 is a 200 V, 11 mΩ, 170 A_Pulsed, rad-hard GaN FET in a small 12 mm² footprint. The EPC7003 is a 100 V, 30 mΩ, 42 A_Pulsed, rad-hard GaN FET in a tiny 1.87 mm² footprint.  Both devices have a total dose radiation rating greater than 1,000K Rad(Si) and SEE immunity for LET of 83.7 MeV/mg/cm² with V_DS up to 100% of rated breakdown. These new devices, along with the rest of the Rad Hard family, EPC7019, EPC7014, EPC7004, EPC7018, EPC7007, are offered in a chip-scale package, the same as the commercial eGaN^® FET and IC family.  Packaged versions will be available from EPC Space.

宜普电源转换公司(EPC)发布第十五阶段产品可靠性测试报告，进一步丰富了关于氮化镓器件可靠性的知识库和展示了EPC eGaN产品的稳健耐用性已在实际应用中得到验证。

EPC宣布发布其第十五阶段产品可靠性测试报告，记录了持续使用测试器件至失效的方法，并针对太阳能优化器、激光雷达传感器和DC/DC转换器等实际应用，加入了具体的可靠性指标和预测数据。

宜普电源转换公司(EPC) 扩展了其封装兼容的ePower™ IC系列，提高功率密度和简化设计以满足DC/DC应用、电机驱动器和D类音频放大器的不同功率要求。

继早前推出的100 V、35 A功率级IC（EPC23102）之后，EPC公司新推两款新型100V功率级IC，其额定电流分别为15A(EPC23104)和25A(EPC23103)。

With Electronic Power Steering (EPS), the hydraulic system is replaced with an electric motor that aids the driver only when needed. Its digital assistance control can be modified online to adapt to driving conditions. There are, however, several design constraints to consider. One is that the driver does not want to lack the haptic feedback from the tires, especially when a vehicle is large, such as a truck. Other constraints are determined by safety regulations, particularly for automatic guided vehicles. These constraints require adopting an efficient, accurate and redundant system. Gallium nitride technology helps the designers in all these areas.

Power Electronics News
March, 2023
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