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东芝3相400V交流输入功率因数校正(PFC)电路的参考设计展示了如何使用第2代SiC MOSFET提高电源效率。该设计实现了97%的功率转换效率,0.99或更高的功率因数。这是诸如电动车(EV)充电桩等大功率转换器的PFC(栅极驱动电路、传感器电路、输出功率开关)的参考设计。
随着电动车的日益普及,对于高效、紧凑型的电力转换系统的需求不断提高。该东芝参考设计为功率转换器PFC提供了一个很好的起点。它可用作原型设计和开发应用程序的基础,有助于发挥全部潜能。
特点
规格
以下是用此参考设计的应用示例。这套系统通过使用高效PFC电源把3相400V交流转换为直流,并结合双向DC-DC转换器(在以下文章中介绍)进行双向充电。
将3相400V交流作为输入电源从PFC的直流输出向电动汽车电池充电电路供电需要一个功率因数校正(PFC)电源进行AC-DC转换,再加上高效绝缘DC-DC转换机制,这样损耗最小。
该应用示例旨在促进高效、低损耗电动汽车充电桩的广泛应用。结合PFC电源的组合实现3相400V交流大功率高效AC-DC转换,外加绝缘DC-DC转换器以确保提高效率和双向运行。