数字化控制电路在高频开关电源设计中的应用

Application of Digital Control Circuit in Design of High Frequency Switching Power Supply

在我国科学技术的发展过程中,自动化技术革新较快,其中系统电源对整个系统的正常运行尤为重要,具有较高的稳定性与安全性。以此实现电源高频化,需要通过软开关技术来实现,使数字化控制电路在高频开关电源设计中有较为广泛的应用。因此,将对开关电源工作原理进行有效分析,阐述开关软件的软开关技术,以此在BUCK变换器的基础上构建具有较高稳定性的移相全桥变换器的小信号模型。

In the development of science and technology in our country,automation technology has been innovated rapidly. The power supply of the system is particularly important for the normal operation of the whole system,which has high stability and security. In order to achieve high-frequency power supply,soft-switching technology is needed to achieve,so that digital control circuit has a wider application in the design of high-frequency switching power supply. Therefore,the working principle of switching power supply will be analyzed effectively,and the soft switching technology of switching software will be expounded. Based on the BUCK converter,a small signal model of phase-shifted full-bridge converter with high stability will be constructed.