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为了克服传统的同步Buck变换器中同步整流门极驱动技术出现的不足,本文提出了一种新型的预测性门极驱动技术。基于周波原理,它减少了续流二极管的导通时间。另外,该项技术还可以根据温度、输入电压、输出电流及器件的性能进行自我调节。该项技术可以极大地提高同步Buck变换器的整体效率。根据实验数据,与传统应用技术相比,它可以减少近20%的损耗。具体的减少量要根据输出电流、换向频率、输入及输出电压来决定。
In order to overcome the shortcomings of the synchronous rectification gate drive technology in the traditional synchronous buck converter, this paper presents a new predictive gate drive technology. Based on the principle of the cycle, it reduces the on-time of the free-wheeling diode. In addition, the technology can also adjust itself based on temperature, input voltage, output current, and device performance. This technology can greatly improve the overall efficiency of the synchronous buck converter. According to the experimental data, it can reduce the loss of nearly 20% compared with the traditional application technology. The specific reduction according to the output current, commutation frequency, input and output voltage to decide.