SBIR Phase I: Smart SiC DC-DC Power Converter for HEV

该小型企业创新研究（SBIR）第一阶段研究项目旨在对基于碳化硅（SiC）高压横向结栅场效应晶体管（HV-LJFET）的独特设计的第一个功率集成电路进行可行性论证，该晶体管有望克服混合动力汽车（HEV）应用中SiC金属氧化物半导体场效应晶体管（MOSFET）面临的所有问题。本研究将开发智能功率DC/DC转换器所需的所有SiC组件的电路模型及其优化设计，并通过实验验证关键组件，包括单片集成的HV-LJFET及其栅极驱动器缓冲电路，以便开发完整的，完全集成的智能DC/DC转换器。因此，可以开发所提出的具有HV-LJFET的全集成智能DC/DC转换器，该HV-LJFET具有比现有技术低三十倍的比导通电阻、比现有技术高十倍以上的开关频率以及高达300摄氏度的高温能力。随着混合动力汽车（HEV）等应用的快速发展，对能够以可靠（即使在恶劣条件下）、紧凑和智能的方式高效输送和管理电力的电力电子系统的需求迅速增长。基于SiC技术的电源管理系统的体积和重量大幅减少所带来的整体车辆效率的提高将减少全球变暖。虽然该提案专注于HEV电源管理应用，但所提出的技术也可以在其他应用中提供巨大的优势，其中高功率密度是至关重要的，并且需要或强烈需要高温，包括航空航天和航空电子应用中的负载点DC/DC转换器。

This Small Business Innovation Research (SBIR) Phase I research project aims for feasibility demonstration of the first Power Integrated Circuit based on a very unique design of Silicon Carbide (SiC) high-voltage lateral Junction gate Field-Effect Transistor (HV-LJFET), which promises to overcome all the problems SiC Metal Oxide Semiconductor Field-Effect Transistor (MOSFETs) face for Hybrid Electric Vehicle (HEV) applications. This research will develop circuit models for all SiC components required for a smart power DC/DC converter and its optimum design and experimentally demonstrate the key components, including a monolithically integrated HV-LJFET with its gate driver buffer circuit, so that a complete, fully integrated smart DC/DC converter can be developed. As a result, it becomes possible to develop the proposed fully integrated smart DC/DC converter with HV-LJFET having a specific on-resistance thirty times lower than the state-of-the-art, a switching frequency more than ten times higher than existing technology and a high-temperature capability up to 300 degrees celsius. With the rapid development of applications such as HEV, the demand grows rapidly for power electronics systems that can deliver and manage efficiently electric power in a reliably (even under harsh conditions), compact and smart manner. The overall vehicle efficiency improvement resulting from the drastic size and weight reduction of power management systems based on SiC technology will reduce global warming. Although the proposal is focused on HEV power management application, the proposed technology can also offer great advantages in other applications where high power density is crucial and high temperature is required or strongly desirable, including point-of-load DC/DC converters in aerospace and avionic applications.