直到目前为止,设计可靠开关电源是专业人员的一项最重要任务。其主要问题之一是需要复杂控制电路,而这一困难,通过使用模拟大规模集成电路器件得到很大解决。实质上,这些单片电路可分二类。一类主要包括为高功率应用所设计的高通用性控制电路。第二类由使用简便,几乎是机内装置所组成,这种装置对于通常所需满足μp 和模拟电路需求的专用电压在一块板子上的产生是理想的。 Until now, designing reliable switching power supplies was one of the most important tasks for professionals. One of the major problems is the need for complex control circuitry, a difficulty that has been greatly solved by using analog large scale integrated circuit devices. In essence, these monolithic circuits can be divided into two categories. One class mainly includes high-versatility control circuits designed for high-power applications. The second type consists of an easy-to-use, almost on-board device that is ideal for creating a dedicated voltage on a board that typically needs to meet μp and analog circuitry requirements.