摘要
在研制开关电源和后备式UPS(不间断电源)的工程实践中,为提高其转换效率,减少外围元器件,减小体积,并提高长时间工作的可靠性与PWM(脉宽调制)的控制精度,对新型PWM集成芯片SG3525的功能特点、控制特性及外围电路进行了研究。讨论了该芯片在UPS逆变电源和开关稳压电源中的应用,利用该芯片设计并制作了高效率的开关电源与UPS逆变电源。
In development switching power supply and backup UPS practice, in order to enhance its conversion efficiency, reduce the periphery devices, reduce its volume and enhance its long-time operation reliability and the PWM control precision, a study on new PWM integrated chip SG3525 function characteristics, its control characteristics and the periphery electric circuit was carried out. Emphasis was put on application of the chip to UPS inversion power supply and switching power supply, and using it makes a high efficient inversion power supply and switching power supply.
出处
《电子工程师》
2006年第6期28-30,共3页
Electronic Engineer
关键词
脉宽调制
开关电源
逆变电源
PWM
switching power supply, inversion power supply
