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<p>A peak current mode control Boost converter system is presented in this paper, which employs a novel adaptive slope compensation technique. Compared to traditional fixed slope compensation circuits, the proposed adaptive slope compensation circuit can generate a slope signal proportional to the sensed inductor current ramp based on input voltage variations, effectively eliminating potential subharmonic oscillations and ensuring the overall stability and efficiency of the system. A simple and easily implementable inductor current sensing adder circuit is proposed, which performs the current summation of the signal reflecting the inductor current and the slope signal from the slope compensation circuit. This boost converter is validated using a SMIC 0.18&#xa0;μm BCD process. With a constant switching frequency of 4&#xa0;MHz, it features a wide input voltage range of 2.5&#xa0;V to 5&#xa0;V and provides a stable output voltage of 6&#xa0;V, achieving a line regulation of 0.03%. When the load current is 0.5&#xa0;A, the output voltage ripple is 8 mV, and the peak efficiency reaches 93% at the same load current, with a load regulation of 0.026%.</p>

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A Current Mode Control Method for Boost Converter with Adaptive Slope Compensation Technique

  • 期刊论文

  • 发表日期：

    2025年6月18日

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  • Chunxiao Zhu,
  • Hua Wu,
  • Shubing Wan,
  • Jia Yao

摘要

A peak current mode control Boost converter system is presented in this paper, which employs a novel adaptive slope compensation technique. Compared to traditional fixed slope compensation circuits, the proposed adaptive slope compensation circuit can generate a slope signal proportional to the sensed inductor current ramp based on input voltage variations, effectively eliminating potential subharmonic oscillations and ensuring the overall stability and efficiency of the system. A simple and easily implementable inductor current sensing adder circuit is proposed, which performs the current summation of the signal reflecting the inductor current and the slope signal from the slope compensation circuit. This boost converter is validated using a SMIC 0.18 μm BCD process. With a constant switching frequency of 4 MHz, it features a wide input voltage range of 2.5 V to 5 V and provides a stable output voltage of 6 V, achieving a line regulation of 0.03%. When the load current is 0.5 A, the output voltage ripple is 8 mV, and the peak efficiency reaches 93% at the same load current, with a load regulation of 0.026%.