Power Cycle Modulation Control for High Efficiency GaN Switch Based Power Supplies

基于高效 GaN 开关的电源的功率循环调制控制

• 批准号: RGPIN-2019-06635
• 负责人: Liu, YanFei
• 金额: $ 4.66万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=691272
• 关键词: Power; Cycle; Modulation; Control; Efficiency

It is very important to reduce power loss and size of the switching power supplies used in new and emerging applications, such as: in Power Delivery (PD) adapters for cell phones, tablets, and notebook computers; and in Electric Vehicles (EV). ******MOSFET (Metal-Oxide-Semiconductor-Field-Effect-Transistor) switches are exclusively used in today's power supplies. MOSFET technology has been developed for over 30 years and its performance has reached its theoretical limit. With MOSFET, the optimal switching frequency is limited to 200 500 kHz for low power application (such as 65W) and to 50 100 kHz for high power application (such as 1,000 5,000W output power).******GaN (Gallium Nitride) switches have been developed in recent years as a next generation switching device with the promise of replacing MOSFETs. GaN switches have much lower conduction loss and lower switching loss. My research has concluded that a GaN switch can achieve the most performance improvement over MOSFET when it is used in resonant converters. However, to realize the potential of this new technology, we need to solve one major limitation of resonant converters: narrow voltage gain range. When the input voltage and output voltage variation range is large, such as larger than 2:1, the performance of current resonant converters is significantly compromised.******The proposed research program will develop a breakthrough power supply control technology, called Power Cycle Modulation (PCM), using GaN switches and resonant converters, to: (1) significantly increase the efficiency and power density of switching power supplies, by (2) achieving peak efficiency operation over very wide input and output voltage variation range, such as 10:1, so as to (3) produce power supply designs with unprecedented high efficiency and high power density of switching power supplies.******The revolutionary PCM technology developed in this research program will reduce: (1) the size of PD adapter for cell phones, tablet, and notebook computers by 5 times and the power loss by 2.5 times; (2) the size of the DC DC converter used in EVs by 3 times and the power loss by 2 times. The technology will help Canadian power supply companies, such as Magna International (major player for EV power), Delta-Q (EV power), AMD power division in Toronto, Murata Power Solutions (communication power), to stay in world leading positions in their field. The technologies optimized for GaN switch applications will also assist Canada in maintaining its position as the world leader in GaN switch design, manufacturing, and sales through companies such as GaN Systems, in Ottawa. Finally, it will support job creation and train HQPs to fill these positions. ******Twenty two HQPs trained in this program and more HQPs to be trained in the follow-up NSERC projects will transfer the newly-created technologies into new products by the above mentioned Canadian companies, and help secure their world leading positions.

降低新兴应用中使用的开关电源的功率损耗和尺寸非常重要，例如： 手机、平板电脑和笔记本电脑的供电 (PD) 适配器；和电动汽车 (EV)。 ******MOSFET（金属氧化物半导体场效应晶体管）开关专门用于当今的电源。 MOSFET技术已经发展了30多年，其性能已达到理论极限。对于 MOSFET，低功率应用（例如 65W）的最佳开关频率限制为 200 500 kHz，高功率应用（例如 1,000 5,000W 输出功率）的最佳开关频率限制为 50 100 kHz。*******GaN（镓）近年来，氮化物开关已被开发为下一代开关器件，有望取代 MOSFET。 GaN开关具有低得多的传导损耗和开关损耗。我的研究得出的结论是，当 GaN 开关用于谐振转换器时，其性能比 MOSFET 可以实现最大程度的提高。然而，为了发挥这项新技术的潜力，我们需要解决谐振转换器的一个主要限制：电压增益范围窄。当输入电压和输出电压变化范围较大时，例如大于2:1，电流谐振转换器的性能会受到显着影响。******所提出的研究计划将开发一种突破性的电源控制技术，称为使用 GaN 开关和谐振转换器的功率循环调制 (PCM) 可以：(1) 显着提高开关电源的效率和功率密度，方法是 (2) 在非常宽的输入和输出电压变化范围内实现峰值效率运行，例如为10：1，从而（3）生产出具有前所未有的高效率和高功率密度的开关电源的电源设计。******本研究计划中开发的革命性PCM技术将减小：（1）手机PD适配器的尺寸，平板电脑、笔记本电脑5倍，功耗2.5倍； (2)电动汽车中使用的DC DC转换器的尺寸增加3倍，功率损耗增加2倍。该技术将帮助加拿大电源公司，如 Magna International（电动汽车电源主要参与者）、Delta-Q（电动汽车电源）、多伦多 AMD 电源部门、Murata Power Solutions（通信电源）等，在电动汽车领域保持世界领先地位。他们的领域。针对 GaN 开关应用优化的技术还将通过渥太华 GaN Systems 等公司帮助加拿大保持 GaN 开关设计、制造和销售领域的全球领先地位。最后，它将支持创造就业机会并培训总部人员来填补这些职位。 ******本次培训的22名总部以及后续NSERC项目中将接受培训的更多总部将把上述加拿大公司的新创造技术转化为新产品，帮助他们确保其世界领先地位。