改進(jìn)的封裝和控制產(chǎn)生超快速DC/DC轉(zhuǎn)換器

　　改進(jìn)的封裝和控制產(chǎn)生超快速DC / DC轉(zhuǎn)換器

　　隨著電子產(chǎn)品越來越小和更好，所以必須轉(zhuǎn)換器供電他們。除了提供更高的效率，從較小的足跡，這些DC / DC轉(zhuǎn)換器也必須迅速應(yīng)對(duì)不同的負(fù)載，同時(shí)使系統(tǒng)設(shè)計(jì)人員的工作更簡(jiǎn)單。因此，電源制造商繼續(xù)挖掘的好處，在包裝，建筑和半導(dǎo)體工藝的進(jìn)步，進(jìn)一步推動(dòng)綜合DC / DC模塊的性能不斷萎縮封裝。

　　雖然，廠商如enpirion（現(xiàn)在Altera），Intersil，線性技術(shù)，德克薩斯文書中有顯著先進(jìn)的集成DC/DC變換器模塊，其他像Micrel公司進(jìn)一步推進(jìn)性能的信封從一個(gè)較小的足跡。

　　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.