This article reports the Au-free GaN power integration platform and a complete integration scheme from devices to functional subcircuits and to application-oriented GaN converter ICs. The design and experimental demonstration of all-GaN dc-dc converter IC with high level of integration is presented. Through the developed GaN power integration platform, devices are monolithically integrated and functional subcircuits are demonstrated, which have realized expected application-oriented functions and are feasible for high-level integration. The all-GaN converter IC with monolithically integrated high-side gate driver, pulse-width modulation (PWM) feedback controller, and overcurrent protection circuits are proposed, numerically analyzed, experimentally demonstrated, and characterized. It can realize stable 10-V output with constant output ripples below 4% from 15-30-V input line voltage. Stable output with constant ripples can be maintained according to the designed feedback control when input and load conditions are abruptly changed. When subjected to over-current incident, the converter IC can be protected according to the desired over-current threshold values within one duty cycle period. The developed all-GaN power integration platform, together with functional subcircuits and dc-dc converter IC, can be a practical verification of all-GaN IC scheme oriented toward power conversion application, and a useful reference for all-GaN IC designs.

中文翻译：

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全GaN电源集成：功能子电路和转换器IC的器件

本文介绍了无金GaN功率集成平台以及从器件到功能子电路以及面向应用的GaN转换器IC的完整集成方案。提出了具有高集成度的全GaN DC-DC转换器IC的设计和实验演示。通过开发的GaN功率集成平台，器件进行了单片集成并演示了功能子电路，这些子电路已经实现了预期的面向应用的功能，并且对于高级集成是可行的。提出了具有单片集成高端栅极驱动器，脉宽调制（PWM）反馈控制器和过流保护电路的全GaN转换器IC，对其进行了数值分析，实验演示和表征。它可以在15-30V输入线路电压下实现稳定的10V输出，且恒定输出纹波低于4％。当输入和负载条件突然改变时，可以根据设计的反馈控制来保持恒定纹波的稳定输出。当发生过电流事件时，可以在一个占空比周期内根据所需的过电流阈值保护转换器IC。所开发的全GaN电源集成平台，连同功能子电路和dc-dc转换器IC，可以作为针对面向电源转换应用的全GaN IC方案的实际验证，并为全GaN IC设计提供有用的参考。当发生过电流事件时，可以在一个占空比周期内根据所需的过电流阈值保护转换器IC。所开发的全GaN电源集成平台，连同功能子电路和dc-dc转换器IC，可以作为针对面向电源转换应用的全GaN IC方案的实际验证，并为全GaN IC设计提供有用的参考。当发生过电流事件时，可以在一个占空比周期内根据所需的过电流阈值保护转换器IC。所开发的全GaN电源集成平台，连同功能子电路和dc-dc转换器IC，可以作为针对面向电源转换应用的全GaN IC方案的实际验证，并为全GaN IC设计提供有用的参考。