Abstract:
An electronic assembly comprising: a) an electronic board (234) having an opening therein, said electronic board (234) further including two pads (2552B) positioned on a first surface of said electronic board (234) proximate to said opening; b) a multilayer circuit board (232) having secured thereto a transformer, said multilayer circuit board (232) positioned such that a portion of a first surface of said multilayer circuit board (232) engages the first surface of said electronic board (234) such that a portion of a core (2310) of said transformer extends into the opening of said electronic board (234), said multilayer circuit board (232) having at least two channels (2524) there through, each of said channels (2524) aligned with one of said at least two pads (2552B) of said electronic board (234); and c) solder (2522) extending through said at least two channels (2524) in said multilayer circuit board (232), said solder (2522) bonded to the channel (2524) and to an associated pad (254B) on said electronic board (234).
Abstract:
Invenţia prezintă o structură de încapsulare pentru componente electronice, care cuprinde un cablaj imprimat multistrat (28), având o parte superioară (28a) ?i o parte inferioară (28b) ?i straturi interioare; înfă?urări (50) ale elementului magnetic introduse în numitul cablaj, un miez magnetic (26a) pătrunzând prin numitul circuitimprimat multistrat prin numitele înfă?urări,componente care disipă putere (22), a?ezate pe un prim suport conductiv termic (48), fixat pe partea superioară a numitului cablaj imprimat multistrat (28) ?i conectat la treceri placate cu cupru(42), un al doilea suport conductiv termic (74), o placă metalică (32), o secţiune înălţată (104) a plăcii metalice ata?ată de numitul cablaj imprimat multistrat, printr-un material izolantconductiv termic (30), secţiunea înălţată (104) a plăcii metalice (32) este a?ezată sub primul suport conductiv termic (30) ?i un suport compresibil conductiv termic (34), a?ezat între miezul magnetic (26b) ?i secţiunea înălţată a plăcii metalice (104).
Abstract:
A package for power converters in which a multilayers circuit board holds the components. The winding of the magnetic elements are incorporated in the multilayers circuit board. The top and some portions of the bottom layers are also support for electronic components. Some of the components are placed on the top layer, which may not be utilized for magnetic winding, reducing the footprint of the magnetic core (26a). The power dissipating devices placed on pads which have a multitude of copper coated via connecting the top to bottom layers. Through these via the heat is transferred from the power devices to the other side of the PCB. In some of the embodiments of this invention the heat can be further transferred to a metal plate connected to the multilayers circuit board via a thermally conductive insulator. The base plate has cutouts or cavities to accomodate the magnetic cores. A thermally conductive material is placed between the magnetic core (26a) and the metal plate on the bottom of the cavity.
Abstract:
A package for power converters in which a multilayers circuit board holds the components. The winding of the magnetic elements are incorporated in the multilayers circuit board. The top and some portions of the bottom layers are also support for electronic components. Some of the components are placed on the top layer, which may not be utilized for magnetic winding, reducing the footprint of the magnetic core (26a). The power dissipating devices placed on pads which have a multitude of copper coated via connecting the top to bottom layers. Through these via the heat is transferred from the power devices to the other side of the PCB. In some of the embodiments of this invention the heat can be further transferred to a metal plate connected to the multilayers circuit board via a thermally conductive insulator. The base plate has cutouts or cavities to accomodate the magnetic cores. A thermally conductive material is placed between the magnetic core (26a) and the metal plate on the bottom of the cavity.
Abstract:
A transformer group in which a multitude of transformers (110A and 110B) are used to supply energy to a single load. The transformers (110A and 110B) are connected in series; in order to assist in providing a "flux equalizing" effect, the invention includes a flux equalizer circuit (112A and 112B). The flux equalizer circuit (112A and 112B) provides a series of flux windings. Each flux winding is associated with a single transformer. The windings are arranged in parallel. In this manner, a balancing of the output of the transformers is obtained; the power output from each transformer is "sensed" by its associated flux winding which is "shared" with the other transformers via their own associated flux winding. Power is processed then through the secondary windings, rectifiers, and output filters to a common load.