在水电厂自动化系统中,开关电源长期工作的稳定性、可靠性至关重要。本文简单阐述了采用TOPSwitch-GX芯片的单端反激式开关电源的设计,交直流220V输入,四路独立输出,额定功率50W,可满足保护装置等电力系统中小装置的供电。 In the hydropower plant automation system, long-term stability of the switching power supply, reliability is essential. This article briefly describes the design of single-ended flyback switching power supply with TOPSwitch-GX chip, AC / DC 220V input, four independent outputs, rated power of 50W, to meet the protection of power systems and other small devices.