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This paper proposes a non-isolated negative output (N/O) buck-boost converter with the voltage gain of \(2D{/}(1 - D)^{2}\) . The proposed converter has the wider voltage gain compared with the conventional buck-boost and Cuk converters. The working principle and steady-state analysis of the new converter are analyzed in continuous conduction mode (CCM). By detailed small-signal modeling of the new converter, the type-II compensators are used to stabilize the output voltage in step-down and step-up modes. Furthermore, input voltage feedforward (IVF) is introduced to suppress the influence of input voltage disturbance on output voltage. Through exhaustive comparisons, the proposed converter has significant advantages in terms of wide voltage gain and low component stress. Finally, the simulated results from MATLAB/SIMULINK and the experimental results are provided to validate the effectiveness of the proposed converter.

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Modeling and Implementation of a Negative Output Quadratic Buck-Boost Converter Based on Input Voltage Feedforward

  • 会议论文

  • 发表日期：

    2026年

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  • Tianlun Chen

摘要

This paper proposes a non-isolated negative output (N/O) buck-boost converter with the voltage gain of \(2D{/}(1 - D)^{2}\) . The proposed converter has the wider voltage gain compared with the conventional buck-boost and Cuk converters. The working principle and steady-state analysis of the new converter are analyzed in continuous conduction mode (CCM). By detailed small-signal modeling of the new converter, the type-II compensators are used to stabilize the output voltage in step-down and step-up modes. Furthermore, input voltage feedforward (IVF) is introduced to suppress the influence of input voltage disturbance on output voltage. Through exhaustive comparisons, the proposed converter has significant advantages in terms of wide voltage gain and low component stress. Finally, the simulated results from MATLAB/SIMULINK and the experimental results are provided to validate the effectiveness of the proposed converter.