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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.