公开(公告)号：EP1043920A2

公开(公告)日：2000-10-11

申请号：EP00302525.1

申请日：2000-03-28

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Heinrich, Randy Thomas ,  Rozman, Allen Frank ,  Truong, Thang D. ,  Woods, William Lonzo, Jr.

IPC: H05K3/34 ,  H05K1/16

CPC classification number: H05K1/165 ,  H05K1/141 ,  H05K3/3415 ,  H05K3/3436 ,  H05K2201/045 ,  H05K2201/086 ,  H05K2201/09063 ,  H05K2201/10234 ,  H05K2201/10257 ,  H05K2201/10666 ,  H05K2203/041 ,  H05K2203/0455 ,  H05K2203/1476 ,  H05K2203/1572 ,  Y02P70/613 ,  Y10T29/4902 ,  Y10T29/49073 ,  Y10T29/49126

Abstract: A surface mountable power supply and a method of manufacturing the power supply. In one embodiment, the power supply includes: (1) a substrate having opposing upper and lower conductive layers (2) a lower electrical component having a first lead mounted on a first pad on the lower conductive layer and subject to forces capable of detaching the lower electrical component from the substrate when the power supply passes through a reflow soldering process, (3) an upper electrical component having a second lead mounted on a second pad on the upper conductive layer, (4) a solder located proximate the first lead, the lower electrical component of a sufficiently low weight such that a surface tension of a liquid state of the solder is sufficient to maintain the lower electrical component in contact with the lower conductive layer as the power supply passes through the reflow soldering process, (5) a planar magnetic device mounted on the substrate, the planar magnetic device having windings formed from a portion of conductive traces on the upper and lower conductive layers and a core disposed through apertures of the substrate and proximate the windings and (6) an inter-substrate conductive mount, coupled to the lower conductive layer, composed of a material having a melting point above a solder reflow temperature and adapted to mount the power supply to an adjacent substrate and provide a conductive path therebetween, the conductive mount including first and second compliant solder joints at interfaces of the substrate and the adjacent substrate, respectively.

Abstract translation: 一种可表面安装的电源及其制造方法。 在一个实施例中，电源包括：（1）具有相对的上和下导电层（2）的衬底，下电气部件具有安装在下导电层上的第一焊盘上的第一引线，并受到能够分离 当电源通过回流焊接工艺时，从基板上降低电气部件，（3）上部电气部件，其具有安装在上部导电层上的第二焊盘上的第二引线，（4）位于第一引线附近的焊料， 所述较低的电气部件具有足够低的重量，使得当电源通过回流焊接工艺时，焊料的液态的表面张力足以保持较低的电气部件与下导电层接触;（5） 安装在基板上的平面磁性装置，所述平面磁性装置具有由上和下导电层上的一部分导电迹线形成的绕组 以及通过所述衬底的孔并且靠近所述绕组设置的芯体，以及（6）衬底间导电安装件，其耦合到所述下导电层，所述衬底的导电层由熔点高于焊料回流温度的材料组成，并且适于安装所述功率 供应到相邻基板并在其间提供导电路径，导电安装座分别包括在基板和相邻基板的界面处的第一和第二柔性焊接点。