共模-差模电压型控制连续导电模式单电感双输出Boost变换器交叉影响特性分析

doi:10.19595/j.cnki.1000-6753.tces.180544

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Abstract Taking single-inductor dual-output (SIDO) Boost converter in continuous conduction mode (CCM) as the research object, the working principle of CCM SIDO Boost converter controlled by common-mode voltage and differential-mode voltage (CMV-DMV) is analyzed in detail. The time-average equivalent circuit modeling approach is used to derive the transfer functions, such as control to output, output impedance and cross-regulation impedance, and so on. By establishing the closed-loop small signal model of CMV-DMV controlled CCM SIDO Boost converter, the cross-regulation characteristics in different output voltage levels are discussed by bode diagram in frequency-domain. The results show that, for CMV-DMV controlled CCM SIDO Boost converter, the cross-regulation of high-voltage output to low-voltage output is smaller than that of low-voltage output to high-voltage output when the two output voltages are not equal, while the cross-regulation of the first turn-on output branch to the second one is bigger than that of the second output branch to the first one when the two output voltages are equal. Finally, the correctness of the theoretical analysis is verified by the experimental results.

Key words： Single-inductor dual-output (SIDO) common-mode voltage and differential-mode voltage (CMV-DMV) small signal model cross-regulation

Received: 08 April 2018 Published: 28 June 2019

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	Ran Xiang
	Zhou Guohua
	Zhou Shuhan

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Ran Xiang,Zhou Guohua,Zhou Shuhan. Cross-Regulation Characteristic of Continuous Conduction Mode Single-Inductor Dual-Output Boost Converter with Common-Mode Voltage and Differential-Mode Voltage Control[J]. Transactions of China Electrotechnical Society, 2019, 34(12): 2519-2528.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.180544 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I12/2519

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