Abstract In this paper we propose a model for the analysis of the current waveform in ferrite power inductors subjected to large-signal square-wave voltage, a typical regime of present-day switch-mode power supplies. This problem is characterized by the non-linear response of the inductor across a wide range of current values, up to the limit of inductor saturation. Consequently, non-linear differential equations must be adopted in the description of the circuit. In this paper, we solve the equations of the circuit through an effective iterative method, by which the current waveform is computed through successive approximations. These results are eventually verified by comparison with experiments performed on a commercial buck-type converter.

中文翻译：

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用于降压型转换器的铁氧体功率电感器中电流波形的计算

摘要 在本文中，我们提出了一个模型，用于分析铁氧体功率电感器在大信号方波电压下的电流波形，这是当今开关模式电源的典型方式。这个问题的特点是电感在很宽的电流值范围内的非线性响应，直到电感饱和的极限。因此，在电路描述中必须采用非线性微分方程。在本文中，我们通过一种有效的迭代方法求解电路方程，通过逐次逼近计算电流波形。这些结果最终通过与在商用降压型转换器上进行的实验进行比较来验证。