Structural analysis of high frequency switching power supply circuit

Short switching regulated power supply switching power supply (Switching PowerSupply), adjust the voltage regulator in the power supply control device always switch mode, named after the. It is using modern power electronic technology, by control switch tube pass broken of time ratio to maintained output voltage stability of a power, has volume small, and weight light, and power small, and efficiency high, and sheath boxiaoyao noise low, and intelligent of degree high, and easy expansion, fine characteristics, widely application in such as computer, and color TV, and PABX, and camera, and VCD, and electronic game machine, electronic device Shang. With the development of power electronics technology, especially the rapid development of the technology of high power devices, switching power supply operating frequency up to 150~200 kHz, switch power supply with good stability and high levels of price/performance, therefore switching power supply will increasingly replace linear adjustment of frequency transformer power supply.