高集成度多模式单级AC-DC BUCK转换器

涂建宏; 邬林峻; 骆骁然; 吴强; 朱樟明

doi:10.12263/DZXB.20260078

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高集成度多模式单级AC-DC BUCK转换器

学术论文 | 更新时间：2026-07-30

- 高集成度多模式单级AC-DC BUCK转换器
- A Highly Integrated and Multi-Mode Single-Stage AC-DC BUCK Converter
- 电子学报 2026年54卷第4期页码：1680-1691
- 作者机构：
  
  1.西南交通大学信息科学与技术学院，四川成都 610000
  2.西安电子科技大学集成电路学部，陕西西安 710071
- 作者简介：
  
  涂建宏男，2001年出生于广东省肇庆市。现为西南交通大学信息科学与技术学院硕士研究生。主要研究方向为功率集成电路。E-mail: tujianhong@my.swjtu.edu.cn
  邬林峻男，1998年出生于四川省绵阳市。现为西南交通大学信息科学与技术学院博士研究生。主要研究方向为开关电源。E-mail: wulj@my.swjtu.edu.cn
  骆骁然男，2001年出生于湖北省枣阳市。现为西南交通大学信息科学与技术学院硕士研究生。主要研究方向为功率集成电路。E-mail: lxr2531@my.swjtu.edu.cn
  吴强男，1988年出生于湖北省麻城市。现为西南交通大学信息科学与技术学院副教授。主要研究方向包括电源管理、绿色能源AC/DC变换器以及数模混合集成电路设计。E-mail: qwu@swjtu.edu.cn
  朱樟明男，1978年生于浙江省嵊州市。现为西安电子科技大学集成电路学部教授，博士生导师。主要研究方向为射频集成电路与系统、高能效模数转换器。中国电子学会会员编号：E190013050S。E-mail: zhangmingzhu@xidian.edu.cn
- 基金信息：
  
  国家自然科学基金(62474145;62174139)
- DOI：10.12263/DZXB.20260078
  中图分类号： TN43;
- 收稿：2026-02-12，
  
  录用：2026-04-02，
  
  网络首发：2026-05-20，
  
  纸质出版：2026-04-25
- 稿件说明：
移动端阅览
涂建宏, 邬林峻, 骆骁然, 等. 高集成度多模式单级AC-DC BUCK转换器[J]. 电子学报, 2026, 54(04): 1680-1691.

TU Jianhong, WU Linjun, LUO Xiaoran, et al. A Highly Integrated and Multi-Mode Single-Stage AC-DC BUCK Converter[J]. Acta Electronica Sinica, 2026, 54(04): 1680-1691.
涂建宏, 邬林峻, 骆骁然, 等. 高集成度多模式单级AC-DC BUCK转换器[J]. 电子学报, 2026, 54(04): 1680-1691. DOI：10.12263/DZXB.20260078

TU Jianhong, WU Linjun, LUO Xiaoran, et al. A Highly Integrated and Multi-Mode Single-Stage AC-DC BUCK Converter[J]. Acta Electronica Sinica, 2026, 54(04): 1680-1691. DOI：10.12263/DZXB.20260078

摘要

针对传统交流转直流（Alternating Current-Direct Current，AC-DC）电源转换方案中两级结构外围器件多、体积大、成本高等问题，本文提出了一种高集成度、多模式控制的单级AC-DC BUCK转换器，实现了交流高压到直流低压的直接转换。相对于传统两级方案或反激拓扑结构，本文方案有效减少了外围元器件的使用，大幅提高了系统集成度，有效减小了系统体积并降低了应用成本。为提升变换器在全负载区间内的转换效率，本文对BUCK转换器的静态损耗、导通损耗与动态损耗进行了系统性分析，明确了功率损耗与峰值电感电流、开关频率的关系，并建立了损耗模型。随后，依据建立的损耗模型，确定了可随负载自适应变化的峰值电流与开关频率控制曲线，并采用了脉冲宽度调制（Pulse Width Modulation，PWM）与脉冲频率调制（Pulse Frequency Modulation，PFM）融合的多模式控制策略。转换器在重载时工作于PWM/PFM混合模式，兼顾负载响应速度与输出纹波抑制；中载时切换到固定频率PWM模式，优化转换效率；轻载时工作于PFM模式，大幅降低开关损耗，实现了不同负载条件下的高效率控制。同时，为突破传统驱动电路对片外VDD电容的依赖，本文设计了无片外电容的高压自供电驱动电路。电路利用耗尽型结型场效应晶体管（Junction Field-Effect Transistor，JFET）实现芯片自供电，并借助其寄生电容为功率金属氧化物半导体场效应晶体管（Metal-Oxide-Semiconductor Field Effect Transistor，MOSFET）栅端提供驱动电流，内部仅需集成220 pF的VDD电容，进一步缩减了外围器件的数量，提升了系统集成度。基于BCD工艺（0.25 μm、700 V）完成了所提出的BUCK控制器的设计与流片，芯片集成了功率MOSFET、片内VDD电容，除去功率MOSFET后的控制器核心面积仅为0.88 mm²。为进一步减少外围器件，芯片与反馈二极管与续流二极管合封，外围器件除了桥式整流仅有储能电感和输出电容。同时，转换器主要工作于断续导通模式（Discontinuous Conduction Mode，DCM），满载时进入连续导通模式（Continuous Conduction Mode，CCM），有效减小了输出电感体积。为验证所提方案的可行性与性能，搭建了专用测试平台进行全面测试，测试结果表明，该转换器在极简的应用条件下，输入85 Vac、输出1.5 W时峰值转换效率达到78.4%。转换器输入电压覆盖85~265 Vac宽范围，输出电压稳定在5 V，负载调整率优于±1.5%，线性调整率优于2.4%，最大输出电流可达300 mA。

Abstract

To address the issues of excessive peripheral components

large volume

and high cost in the two-stage topology used in conventional alternating current-direct current (AC-DC) power conversion solutions

this paper proposes a single-stage AC-DC BUCK converter with high integration and multi-mode control

which realizes direct conversion from high-voltage AC to low-voltage DC. Compared with traditional two-stage schemes or flyback topologies

the proposed solution effectively reduces the usage of peripheral components

significantly improves system integration

and lowers both system volume and application cost. To enhance the conversion efficiency of the converter across the full load range

this paper systematically analyzes the static loss

conduction loss

and dynamic loss of the BUCK converter

clarifies the relationships between power loss and peak inductor current as well as switching frequency

and establishes a loss model. Based on the derived loss model

the control curves of peak current and switching frequency that adaptively vary with load conditions are determined

and a multi-mode control strategy combining pulse width modulation (PWM) and pulse frequency modulation (PFM) is adopted. The converter operates in a hybrid PWM/PFM mode under heavy load to balance load response speed and output ripple suppression; switches to fixed-frequency PWM mode at medium load for optimized conversion efficiency; and operates in PFM mode under light load to substantially reduce switching loss

thereby achieving high-efficiency control under various load conditions. Meanwhile

to break the dependence of conventional drive circuits on off-chip VDD capacitors

a high-voltage self-powered drive circuit without off-chip capacitors is designed. The circuit utilizes a depletion-mode junction field-effect transistor (JFET) to realize chip self-power supply and provides drive current for the gate of the power MOSFET through its parasitic capacitance

requiring only an integrated 220 pF on-chip VDD capacitor

which further reduces the number of peripheral devices and improves system integration. The proposed BUCK controller is designed and fabricated based on the BCD process (0.25 μm

700 V) . The chip integrates a power metal-oxide-semiconductor field effect transistor (MOSFET) and an on-chip VDD capacitor

with a core controller area of only 0.88 mm² excluding the power MOSFET. To further minimize peripheral components

the chip is co-packaged with a feedback diode and freewheeling diode

leaving only an energy-storage inductor and an output capacitor as peripheral devices besides the bridge rectifier. In addition

the converter mainly operates in discontinuous conduction mode (DCM) and enters continuous conduction mode (CCM) at full load

effectively reducing the volume of the output inductor. To verify the feasibility and performance of the proposed scheme

a dedicated test platform is built for comprehensive measurements. The test results show that the converter achieves a peak conversion efficiency of 78.4% at an input of 85 Vac and an output power of 1.5 W under extremely simple application conditions. It supports a wide input voltage range of 85-265 Vac with a stable 5 V output voltage. The load regulation is better than ±1.5%

the line regulation is better than 2.4%

and the maximum output current reaches 300 mA.

关键词

Keywords

references

Park W , Namgoong G , Choi E , et al . A 94% peak efficiency dual mode buck converter with fully integrated on-time-based mode control for implantable medical devices [J ] . IEEE Transactions on Circuits and Systems II: Express Briefs , 2022 , 69 ( 11 ): 4458 - 4462 . DOI: 10.1109/tcsii.2022.3194154 http://dx.doi.org/10.1109/tcsii.2022.3194154

Guo Tian , Duan Quanzhen , Lee M , et al . A 464 nA quiescent current buck converter with 93.7% peak efficiency for IoT devices [J ] . IEEE Transactions on Industrial Electronics , 2024 , 71 ( 7 ): 8197 - 8201 . DOI: 10.1109/TIE.2023.3306408 http://dx.doi.org/10.1109/TIE.2023.3306408

Lai Xinquan , Zhao Jingxiang , Wang Bingyuan . A current-mode DC-DC buck converter with accurate current limit using multiplex PWM comparator [J ] . IEEE Transactions on Industrial Electronics , 2022 , 69 ( 12 ): 12739 - 12749 . DOI: 10.1109/tie.2022.3142390 http://dx.doi.org/10.1109/tie.2022.3142390

Cao Peng , Wang Yingjie , Xu Jiawei , et al . A 55 nA quiescent current power-wise buck converter with 1 μA-600 mA load range and 0.5 V-1.8 V flexible output voltage options [J ] . IEEE Transactions on Circuits and Systems I: Regular Papers , 2025 , 72 ( 1 ): 397 - 407 . DOI: 10.1109/tcsi.2024.3413769 http://dx.doi.org/10.1109/tcsi.2024.3413769

Besharati Rad A , Kargaran M , Meghdadi M , et al . A wide-input-/output-voltage-range buck converter with adaptive light-load efficiency improvement and seamless mode transition [J ] . IEEE Transactions on Power Electronics , 2024 , 39 ( 2 ): 2200 - 2212 . DOI: 10.1109/tpel.2023.3336872 http://dx.doi.org/10.1109/tpel.2023.3336872

Lai Longkun , Li Chenhao , Jiang Xin , et al . A monolithic GaN DC-DC buck converter with an antibootstrap level shifter for envelope-tracking amplifier [J ] . IEEE Transactions on Power Electronics , 2024 , 39 ( 1 ): 939 - 948 . DOI: 10.1109/tpel.2023.3313124 http://dx.doi.org/10.1109/tpel.2023.3313124

Kim D , Lee Y , Kim J . A 12 MHz GaN-based DC-DC buck converter featuring dual reverse conduction controllers [J ] . IEEE Transactions on Circuits and Systems II: Express Briefs , 2025 , 72 ( 12 ): 2042 - 2046 . DOI: 10.1109/tcsii.2025.3624881 http://dx.doi.org/10.1109/tcsii.2025.3624881

Zhang Yutan , Song Wendi , Hua Weijie , et al . A boost-inductorless electrolytic-capacitorless single-stage bidirectional isolated AC-DC converter [J ] . IEEE Transactions on Power Electronics , 2023 , 38 ( 4 ): 5469 - 5678 . DOI: 10.1109/tpel.2022.3227183 http://dx.doi.org/10.1109/tpel.2022.3227183

Awasthi A , Bagawade S , Jain P K . Analysis of a hybrid variable-frequency-duty-cycle-modulated low- Q LLC resonant converter for improving the light-load efficiency for a wide input voltage range [J ] . IEEE Transactions on Power Electronics , 2021 , 36 ( 7 ): 8476 - 8493 . DOI: 10.1109/tpel.2020.3046560 http://dx.doi.org/10.1109/tpel.2020.3046560

Wei Yuqi , Luo Quanming , Alonso J M , et al . A magnetically controlled single-stage AC-DC converter [J ] . IEEE Transactions on Power Electronics , 2020 , 35 ( 9 ): 8872 - 8877 . DOI: 10.1109/TPEL.2020.2970589 http://dx.doi.org/10.1109/TPEL.2020.2970589

Sha Deshang , Zhang Debin , Zhang Jiankun . A single-stage dual-active-bridge AC-DC converter employing mode transition based on real-time calculation [J ] . IEEE Transactions on Power Electronics , 2021 , 36 ( 9 ): 10081 - 10088 . DOI: 10.1109/tpel.2021.3058143 http://dx.doi.org/10.1109/tpel.2021.3058143

Sarani S , Abootorabi Zarchi H , Delavaripour H . Ripple-free input current flyback converter using a simple passive circuit [J ] . IEEE Transactions on Industrial Electronics , 2022 , 69 ( 3 ): 2557 - 2564 . DOI: 10.1109/tie.2021.3065624 http://dx.doi.org/10.1109/tie.2021.3065624

邬林峻 . 无片外电容低功耗AC-DC电源控制芯片研究 [D ] . 成都 : 西南交通大学 , 2024 .

Wu Linjun . Research on low power AC-DC power supply control chip without off-chip capacitor [D ] . Chengdu : Southwest Jiaotong University , 2024 . (in Chinese)

He Luyang , Chang Changyuan , Chen Chang , et al . Design of a high accuracy PSR CC/CV AC-DC converter without auxiliary winding [J ] . IEEE Transactions on Power Electronics , 2020 , 35 ( 8 ): 8165 - 8172 . DOI: 10.1109/tpel.2019.2960036 http://dx.doi.org/10.1109/tpel.2019.2960036

Tang Tianyuan , Luo Ping , Deng Chengda , et al . Seamless mode-switch control scheme for primary side regulation flyback with capacitorless self-adaptive startup [J ] . IEEE Transactions on Power Electronics , 2021 , 36 ( 8 ): 9668 - 9677 . DOI: 10.1109/TPEL.2021.3057913 http://dx.doi.org/10.1109/TPEL.2021.3057913

Kim S J , Choi W S , Pilawa-Podgurski R , et al . A 10 MHz 2 800 mA 0.5~1.5 V 90% peak efficiency time-based buck converter with seamless transition between PWM/PFM modes [J ] . IEEE Journal of Solid-State Circuits , 2018 , 53 ( 3 ): 814 - 824 . DOI: 10.1109/jssc.2017.2776298 http://dx.doi.org/10.1109/jssc.2017.2776298

Hao Yun , Wang Xukun , Han Zhigang , et al . A high-efficiency dual-mode DC-DC converter with a low-cost seamless transition scheme [J ] . IEEE Transactions on Power Electronics , 2025 , 40 ( 9 ): 12488 - 12498 . DOI: 10.1109/TPEL.2025.3547857 http://dx.doi.org/10.1109/TPEL.2025.3547857

Hwang Y S , Chen J J , Yang J , et al . A low-EMI continuous-time delta-sigma-modulator buck converter with transient response eruption techniques [J ] . IEEE Transactions on Industrial Electronics , 2020 , 67 ( 8 ): 6854 - 6863 . DOI: 10.1109/TIE.2019.2937071 http://dx.doi.org/10.1109/TIE.2019.2937071

Huang C S , Chen Dan , Chen C J , et al . Mix-voltage conversion for single-inductor dual-output buck converters [J ] . IEEE Transactions on Power Electronics , 2010 , 25 ( 8 ): 2106 - 2114 . DOI: 10.1109/tpel.2009.2033070 http://dx.doi.org/10.1109/tpel.2009.2033070

倪雨 , 许建平 . 控制受限滑模控制Buck变换器优化设计 [J ] . 电子学报 , 2013 , 41 ( 3 ): 555 - 560 . DOI: 10.3969/j.issn.0372-2112.2013.03.023 http://dx.doi.org/10.3969/j.issn.0372-2112.2013.03.023

Ni Yu , Xu Jianping . Optimal design of sliding mode control Buck converter with bounded input [J ] . Acta Electronica Sinica , 2013 , 41 ( 3 ): 555 - 560 . (in Chinese) . DOI: 10.3969/j.issn.0372-2112.2013.03.023 http://dx.doi.org/10.3969/j.issn.0372-2112.2013.03.023

Tanaka A , He Shan , Mounesi R , et al . An 81.0% peak efficiency, 1.0 W/cm 3 miniaturized 5 V/1 A AC-DC converter using a highly-integrated primary-side active clamp flyback controller with adaptive frequency and zero-voltage switching [C ] // 2025 IEEE Custom Integrated Circuits Conference (CICC) . Piscataway : IEEE , 2025 : 1 - 3 . DOI: 10.1109/cicc63670.2025.10983408 http://dx.doi.org/10.1109/cicc63670.2025.10983408

Xie Jin , Chen Qibin , Zhang Jianwei , et al . A high efficiency dual mode buck converter with a novel seamless and fast transition scheme [J ] . IEEE Transactions on Circuits and Systems I: Regular Papers , 2026 , 73 ( 4 ): 2952 - 2962 . DOI: 10.1109/tcsi.2025.3622646 http://dx.doi.org/10.1109/tcsi.2025.3622646

Wu Qiang , Wu Linjun , Li Yongyuan , et al . A high precision CV control scheme for low power AC-DC BUCK converter controller [J ] . IEEE Transactions on Circuits and Systems I: Regular Papers , 2023 , 70 ( 10 ): 4183 - 4193 . DOI: 10.1109/tcsi.2023.3301620 http://dx.doi.org/10.1109/tcsi.2023.3301620

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