改进的封装和控制产生超快速DC/DC转换器

　　改进的封装和控制产生超快速DC / DC转换器

　　随着电子产品越来越小和更好，所以必须转换器供电他们。除了提供更高的效率，从较小的足迹，这些DC / DC转换器也必须迅速应对不同的负载，同时使系统设计人员的工作更简单。因此，电源制造商继续挖掘的好处，在包装，建筑和半导体工艺的进步，进一步推动综合DC / DC模块的性能不断萎缩封装。

　　虽然，厂商如enpirion（现在Altera），Intersil，线性技术，德克萨斯文书中有显着先进的集成DC/DC变换器模块，其他像Micrel公司进一步推进性能的信封从一个较小的足迹。

　　Linear Technology， for instance， has created a portfolio of integrated micropower modules， designated µModule， that integrate all the required active and passive components， including inductor， together with controller， power MOSFETs and compensation circuitry in a single surface-mount BGA or LGA package. It is a complete step-down DC/DC converter that requires only a handful of external components to complete the solution （Figure 1）。 A good example is LTM4601， which is a complete 12 A step-down DC/DC module housed in a compact 15 x 15 x 2.82 mm LGA package capable of delivering precisely regulated output voltage that is programmable from 0.6 V to 5.0 V using just one external resistor. The wide DC-input-voltage range for the unit is 4.5 V to 20 V. The LTM4601 also comes in 15 x 15 x 3.42 mm BGA package.