Design and Implementation of an Uninterruptible Power Supply Based on ARM

Design and implementation of uninterruptible power supply based on ARM microprocessor STM32F100 is presented.A flyback power supply and automatic switching circuit are designed.A chip power management system as the core CN3705 chip and FS361A of chip are developed.Using a variety of protective measure,the software flow chart of the system is given.Experimental tests showed that the system is stable.It can automatically switch when the power is cutting.