An envelope tracking supply converter was presented for the RF power amplifiers of sub-6 GHz 5G NR mobile devices. The hybrid supply converter consisted of a linear, fast switching, and slow switching regulators connected in parallel. The two-phase hysteretic control was proposed for use in the fast switching regulator to track the fast-varying envelope of 40-MHz 5G NR signal. The 0.25-μm CMOS supply converter achieved a maximum efficiency of 79.1%. The power-added efficiency improvement of the RF power amplifier with the proposed supply converter was 3.1% when tested with a 40-MHz 256-QAM 5G NR signal.

中文翻译：

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用于5G NR移动终端的RF功率放大器的CMOS包络跟踪电源转换器

提出了一种用于6 GHz以下5G NR移动设备的RF功率放大器的包络跟踪电源转换器。混合电源转换器由并联的线性，快速开关和慢速开关稳压器组成。提出了一种用于快速开关稳压器的两相磁滞控制，以跟踪40MHz 5G NR信号的快速变化包络。0.25μmCMOS电源转换器的最高效率为79.1％。使用40MHz 256-QAM 5G NR信号进行测试时，采用建议的电源转换器的RF功率放大器的功率附加效率提高了3.1％。