A Study on the Stability Improvement of the Switching Power Supplies - Case of the High Frequency Series Resonant Converter

스위칭전원의 안정도 향상에 관한 연구 -고주파 직렬공진형 컨버터를 중심으로-

Conventional pwm switching power supply have the disadvantage some aspects of size, light weight, noise and system stability. High frequency Series Resonant Converter (SRC), described in this paper, almost improve above disadvantages. We use the state plane technique as analysis method. This technique is powerful tool which can clearly analyze the peak stress of the state variables inside the converter, Here, we can define each operation mode from frequency ratio Fsn, switching frequency to resonant frequency, and we analyze the output performance in each operation mode. To verify the theoretical analysis, we compose the actual converter, and the experimental results are compared with analysis.