A 2.5–5-V Input 100-V Output 86.2% Peak Efficiency Fibonacci-Dickson Hybrid Converter for Acoustic Surface Audio Driver

IF 5.6 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Journal of Solid-state Circuits Pub Date : 2025-02-19 DOI:10.1109/JSSC.2025.3541341

Yifan Jiang;Yan Lu;Chen Hu;Junmin Jiang

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Abstract

This article introduces a hybrid boost converter designed for the acoustic surface audio driver, operating within an input voltage range of 2.5–5 V and boosting it to a high voltage (HV) of 100 V. The proposed design adopts a cascaded approach by integrating the Fibonacci and Dickson switched-capacitor (SC) topologies. This combination enables the converter to achieve a high-voltage conversion ratio (VCR). It offers the advantages of a reduced number of flying capacitors and reduced voltage stress for power switches. To improve the overall efficiency, we only use laterally diffused N-type metal-oxide-semiconductor (LDNMOS) power switches, which offer lowon-resistance, fast switching, and reduced fabrication mask requirements. In addition, a stacked active bootstrap replaces the conventional bootstrap diode with an actively controlled transistor that has loweron-resistance, overcoming the diode forward voltage drop issue and improving efficiency. The converter delivers a maximum output power of 2 W at 100-V output voltage with a peak efficiency of 86.2% and a power density of 7.43 W/cm3.

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2.5 - 5v输入100v输出86.2%峰值效率fibonaci - dickson混合变换器的声学表面音频驱动器

本文介绍了一种用于声面音频驱动器的混合升压转换器，该转换器在2.5-5 V的输入电压范围内工作，并将其升压到100 V的高压（HV）。提出的设计采用级联方法，通过集成斐波那契和迪克森开关电容器（SC）拓扑。这种组合使转换器能够实现高电压转换比（VCR）。它提供了减少飞行电容器数量和降低电源开关电压应力的优点。为了提高整体效率，我们只使用横向扩散的n型金属氧化物半导体（LDNMOS）功率开关，它提供低电阻，快速开关，并减少了制造掩模的要求。此外，堆叠型有源自举取代传统的自举二极管，采用具有较低电阻的主动控制晶体管，克服了二极管正向压降问题，提高了效率。该变换器在100v输出电压下的最大输出功率为2w，峰值效率为86.2%，功率密度为7.43 W/cm3。

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来源期刊

IEEE Journal of Solid-state Circuits 工程技术-工程：电子与电气

CiteScore

11.00

自引率

20.40%

发文量

351

审稿时长

3-6 weeks

期刊介绍： The IEEE Journal of Solid-State Circuits publishes papers each month in the broad area of solid-state circuits with particular emphasis on transistor-level design of integrated circuits. It also provides coverage of topics such as circuits modeling, technology, systems design, layout, and testing that relate directly to IC design. Integrated circuits and VLSI are of principal interest; material related to discrete circuit design is seldom published. Experimental verification is strongly encouraged.