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: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=752179
• 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.

减少新应用程序和新兴应用中使用的开关电源的功率损失和大小非常重要，例如：用于手机，平板电脑和笔记本计算机的电力输送（PD）适配器；和电动汽车（EV）。 MOSFET（金属氧化物 - 氧化型电场效应 - 横向器）开关仅用于当今的电源。 MOSFET技术已经开发了30多年，其性能已达到其理论限制。使用MOSFET，对于低功率应用（例如65W），最佳开关频率限制为200-500 kHz，用于高功率应用（例如1,000-5,000W的输出功率），为50-100 kHz。近年来，GAN（氮化碳）开关已作为下一代开关设备开发，并有望更换MOSFET。 GAN开关的传导损失较低，开关损耗较低。我的研究得出的结论是，当在谐振转换器中使用时，GAN开关可以在MOSFET方面取得最大的性能改善。但是，要实现这项新技术的潜力，我们需要解决共振转换器的一个主要局限性：狭窄的电压增益范围。当输入电压和输出电压变化范围较大（例如大于2：1）时，电流谐振转换器的性能会大大损害。拟议的研究计划将使用GAN开关和谐振转换器开发突破性的电源控制技术，称为功率周期调制（PCM），至：（1）显着提高开关电源供应的效率和功率密度，通过（2）实现峰值效率运行，在非常宽的输入和输出电源变化范围内，诸如10：1，例如（3）的效率（3），以及（3）的效率（3），以及（3）开关电源。该研究计划中开发的革命性PCM技术将减少：（1）手机，平板电脑和笔记本计算机的PD适配器的大小增加了5次，功率损失却增加了2.5倍； （2）电动汽车中使用的DC -DC转换器的尺寸3次，功率损耗降低了2次。该技术将帮助加拿大电源公司，例如Magna International（EV Power的主要参与者），Delta-Q（EV Power），多伦多的AMD Power Division，Murata Power Solutions（沟通能力），保持其领域的领先地位。针对GAN SWITS应用程序进行了优化的技术还将帮助加拿大通过渥太华的Gan Systems等公司来维持其作为GAN SWITSS设计，制造和销售领域的世界领导者的地位。最后，它将支持创造就业机会并培训HQP以填补这些职位。在该计划中接受了培训的22个HQP和在后续NSERC项目中接受培训的更多HQP将通过上述加拿大公司将新创建的技术转移到新产品中，并帮助确保其世界领先地位。