Pub Date : 2024-06-07DOI: 10.1109/LSSC.2024.3411390
Niklas Deneke;Bernhard Wicht
Gallium Nitride (GaN) technology enables essential progress in energy efficiency and density, especially in off-line power supplies. This letter presents a monolithic GaN-IC, including a half-bridge, formed by two high-voltage power FETs with respective gate drivers and a high-voltage level shifter, forming a signal interface between high-side and low-side domain, making use of a GaN-on-SOI technology. Verified by experimental results, it achieves 500-V switching at 6.25 MHz and is thus well suited for off-line power supplies.
氮化镓(GaN)技术在能源效率和密度方面取得了重大进展,尤其是在离线电源方面。本文介绍了一种单片式氮化镓集成电路(GaN-IC),包括一个半桥,由两个高压功率场效应晶体管与各自的栅极驱动器和一个高压电平转换器组成,形成了高压侧和低压侧域之间的信号接口,并采用了氮化镓硅 (GaN-on-SOI) 技术。实验结果证明,它能在 6.25 MHz 频率下实现 500 V 开关,因此非常适合离线电源。
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The proposed ripple-less buck converter (RLBC) uses a two-phase topology with an inverted ac current replica (IACCR) circuit to reduce output voltage ripple to meet the error vector magnitude (EVM) requirement of 5G new radio (5G NR) low earth orbit (LEO) application. Assistance inductance (AI) circuit emulates inductor current to avoid using extra inductors. Ripple minimization (RM) circuit further reduces output ripple by synchronizing the switching moment of power MOSFETs. Therefore, the proposed RLBC achieves 5G NR LEO standards with an EVM of -28.85dB.
所提出的无纹波降压转换器(RLBC)采用带有反相交流电流复制(IACCR)电路的两相拓扑结构,以降低输出电压纹波,从而满足 5G 新无线电(5G NR)低地球轨道(LEO)应用对误差矢量幅度(EVM)的要求。辅助电感 (AI) 电路模拟电感电流,以避免使用额外的电感器。纹波最小化(RM)电路通过同步功率 MOSFET 的开关时刻,进一步降低输出纹波。因此,拟议的 RLBC 实现了 5G NR LEO 标准,EVM 为 -28.85dB。
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Pub Date : 2024-06-05DOI: 10.1109/LSSC.2024.3409710
Babita Gyawali;Ramesh K. Pokharel;Samundra K. Thapa;Adel Barakat;Naoki Shinohara
This article presents the design and realization of a compact size high-efficiency complementary metal-oxide- semiconductor rectifier with resonance control technique employing the concept of parallel rectifier. The methodology involves the integration of two rectifiers, where one is main rectifier, specifically designated for rectification purposes and the other is auxiliary, serves for impedance matching, resulting in no matching at input. Furthermore, the auxiliary rectifier offers control over resonance of the proposed rectifier. The proposed design achieves more than 40% conversion efficiency at 22 dBm of input power for the broadband range from 2.4 to 3.5 GHz, with an active circuit size of $0.21~mathrm {mm}^{2}$