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Ultrahigh Step-Up Coupled-Inductor DC-DC Converter With Soft-Switching for Driving Piezoelectric Actuators
IEEE Transactions on Circuits and Systems II: Express Briefs ( IF 4.4 ) Pub Date : 2021-04-09 , DOI: 10.1109/tcsii.2021.3072206
Shousheng Han , Hanjun Jiang , Jingzhong Ma , Xiaoming Wu , Tianling Ren

DC-DC Converters for driving microactuators in microelectromechanical systems (MEMS) normally demand higher conversion ratios and stricter volume and weight than those in solar photovoltaic (PV) applications. This brief proposes a novel ultrahigh step-up coupled-inductor DC-DC converter with soft-switching cell, which operating in DCM with a minimum number of devices. In the circuit topology, a coupled-inductor is inserted into the conventional boost converter to extend the voltage gain dramatically and decrease the switch voltage stress effectively. In addition, an auxiliary switch, which is connected back to back with the main switch, is used to implement zero-voltage switching (ZVS) and zero-current switching (ZCS) to reduce the switching loss. This brief describes the steady state waveforms in details, and the voltage gain and conduction loss of the converter theoretically. The boost and soft-switching performance are evaluated. An experimental circuit, which is with 3.7V input to 209V output at 200mW, has been built to validate the operations and confirms the theoretical waveforms.

中文翻译:

用于驱动压电执行器的具有软开关的超高升压耦合电感器 DC-DC 转换器

与太阳能光伏 (PV) 应用相比,用于驱动微机电系统 (MEMS) 中微致动器的 DC-DC 转换器通常需要更高的转换率和更严格的体积和重量。本简介提出了一种具有软开关单元的新型超高升压耦合电感 DC-DC 转换器,该转换器以最少数量的设备在 DCM 中运行。在电路拓扑中,在传统升压转换器中插入耦合电感,可显着扩展电压增益,有效降低开关电压应力。此外,与主开关背靠背连接的辅助开关用于实现零电压开关(ZVS)和零电流开关(ZCS),以减少开关损耗。本简介详细描述了稳态波形,以及转换器的理论上的电压增益和传导损耗。评估升压和软开关性能。已经构建了一个具有 3.7V 输入至 209V 输出、200mW 的实验电路来验证操作并确认理论波形。
更新日期:2021-04-09
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