基于TOPSwitch-II的单片开关电源设计

Design of Single-Chip Switching Mode Power Supply Based on TOPSwitch-II

TOPSwich-II器件为三端单片开关电源,是一种将PWM和MOSFET合二为一的新型集成芯片。与普通线性稳压电源相比其优点为体积小、重量轻,并且密度高、价格低;采用它制作高频开关电源,不仅简化了电路,同时可以改善电源的电磁兼容性能,且降低了制作成本。文章介绍了基于TOPSwitch-II单片开关电源的设计方法,实现了用于某温控仪表的四路输出开关电源。

TOPSwich-II device belongs to three terminal off-line PWM switch.It is a type of IC which merges PWM and MOSFET.Compared with linear voltage regulator,it has many advantages: small volume,light weight,high density and low cost.High frequency switching mode power supply made from it not only can simplify the circuit,but also can improve the EMC characteristics and reduce the cost.A switching mode power supply design method based on the single-chip TOPSwitch-II is introduced.A power supply which is applied in...