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本文提出了一种可重构的电容隔离DC-DC转换器，支持400mW和800mW两种输出功率模式，峰值效率达68.3%。该设计采用电容隔离替代传统变压器，有效减小了系统体积并降低了成本，同时具备良好的共模瞬态抗扰度。
Galvanically isolated voltage regulators (GIVRs) are widely used in industrial automation, electric vehicles, and medical devices to deliver power to low-voltage circuits across isolated domains and ensure human safety and device reliability in hazardous environments. Traditional bulky transformer-based GIVRs can deliver 2W output power with 80% peak efficiency [1]. However, transformers are relatively expensive, and their size limits the overall physical size of the system from being further minimized. Inductive GIVRs using micro transformers have been introduced in [2-9] with a significantly reduced form factor; however, their efficiency is also significantly compromised to around 50% [2-4], or even lower in the 7-to-40% range [5-9]. This is mainly due to the much lower quality of the micro transformers compared to traditional ones, as well as the associated much higher switching frequency. In addition, the
Junyao Tang, Lei Zhao, Cheng Huang
Iowa State University, Ames, IA