摘要
高频电源模块的噪声主要来自功率变换和输出整流滤波电路。ZVZCS PWM全桥变换器实现了开关管的软开关,但其输出整流二极管不是工作在软开关状态,输出整流二极管在换流时,变换器的副边存在寄生振荡。本文讨论其产生原因及抑制办法。
Most of noise in high-frequency module comes from the power conversing circuit and output rectifying and filtering circuit. ZVZCS PWM full-bridge converter realizes soft-switching in the switch tube. However, the output rectifying diode is not under a state of soft-switching. When the diode is changing current, the vice side of the converter will have parasitic oscillation. In this paper, we discuss the cause and suppression method of the parasitic oscillation.
出处
《电源技术应用》
2009年第6期5-7,共3页
Power Supply Technologles and Applications
关键词
高频
尖峰
探讨
High Frequency
Peak
Discussion
