Electric power conversion systems – Current conversion – With conductive support mounting
Reexamination Certificate
1998-05-22
2001-04-03
Han, Jessica (Department: 2838)
Electric power conversion systems
Current conversion
With conductive support mounting
C363S146000
Reexamination Certificate
active
06212086
ABSTRACT:
BACKGROUND
1. Field
The present invention relates to packaging, and more particularly, to packaging for a DC-to-DC converter.
2. Background Information
Direct-current (DC) to direct-current (DC) converters are well-known in the art. Such circuitry or devices are typically employed to convert from one DC voltage signal level to another DC voltage signal level. This may be useful in a variety of environments. A number of such converters are well-known.
Conventionally, a DC-to-DC converter package includes a bulky heat sink to dissipate the heat generated by the switching of transistors during converter operation. Typically, a heat sink is employed to manage the thermal considerations related to the converter. Likewise, traditionally thick printed circuit board traces or wire harnesses are employed. Of course, these aspects of conventional packaging affect space considerations, weight considerations, as well as thermal and other considerations with respect to the DC to DC converter package. In addition, due to the nature of the operation of the DC-to-DC converter, capacitors, such as input capacitors and output capacitors, are typically included on the printed circuit board to handle the dynamic response of the converter. This also affects cost considerations, in addition to the foregoing considerations, such as the cost of materials and labor, to produce the DC-to-DC converter package. It would be desirable if an alternative approach to packaging existed that reduced the size and weight of the DC-to-DC converter package, as well as addressing these other considerations, such as heat and dynamic response.
SUMMARY
Briefly, in accordance with one embodiment of the invention, a DC-to-DC converter package includes: a DC-to-DC converter circuit. The components of the DC-to-DC converter circuit that perform high frequency switching during converter operation are surface mounted on a printed circuit board (PCB) so that the heat produced from the high frequency switching is approximately equally distributed at least over the portion of the PCB where the components are mounted.
REFERENCES:
patent: 4738024 (1988-04-01), Eberhardt
patent: 5159700 (1992-10-01), Reid et al.
patent: 5184281 (1993-02-01), Samarov et al.
patent: 5282114 (1994-01-01), Stone
patent: 5616888 (1997-04-01), McLaughlin et al.
Han Jessica
Intel Corporation
Skaist Howard A.
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