Fairchild Semiconductor Corporation

Tiburcio A Maldo

Yong Liu

Hua Yang

Margie T Rios

Yumin Liu

Paul Armand Calo

Erwin Ian V Almagro

Sangdo Lee

JoonSeo Son

A multiple die package includes a folded leadframe for interconnecting at least two die attached to another leadframe. In a synchronous voltage regulator the folded leadframe, which is formed from a single piece of material, connects the high side switching device with the low side switching device to provide a low resistance, low inductance connection between the two devices.

Folded leadframe multiple die package

A two tier power module has, in one form thereof, a PC board having upper and lower traces with an opening in the insulating material that contains a power device which has upward extending solder bump connections. An upper leadframe is mounted on the solder bumps and the upper tracks of the PC board. Vias in the PC board connect selected upper and lower traces. A control device is mounted atop the leadframe and wire bonded to the leadframe, and the assembly is encapsulated leaving exposed the bottom surfaces of the lower traces of the PC board as external connections. In another form the PC board is replaced by a planar leadframe and the upper leadframe has stepped sections which make connections with the planar leadframe, the bottom surfaces of the planar leadframe forming external connections of the module.

Semiconductor package with an embedded printed circuit board and stacked die

A 3D smart power module for power control, such as a three phase power control module, includes a two sided printed circuit (PC) board with power semiconductor devices attached to one side and control semiconductor devices attached to the other side. The power semiconductor devices are die bonded to a direct bonded copper substrate which has a bottom surface exposed in the molded package. In one embodiment the module has 27 external connectors attached to one side of the PC board and arranged in the form of a ball grid array.

3D smart power module

An exemplary semiconductor die package is disclosed having one or more semiconductor dice disposed on a first substrate, one or more packaged electrical components disposed on a second substrate that is electrical coupled to the first substrate, and an electrically insulating material disposed over portions of the substrates. The first substrate may hold power-handling devices and may be specially constructed to dissipation heat and to facilitate fast and inexpensive manufacturing. The second substrate may hold packaged components of control circuitry for the power-handling devices, and may be specially constructed to enable fast and inexpensive wiring design and fast and inexpensive component assembly. The first substrate may be used with different designs of the second substrate.

Semiconductor die packages with multiple integrated substrates, systems using the same, and methods using the same

Disclosed in this specification is a multiphase buck converter package and process for forming such package. The package includes at least four dies and at least nine parallel leads. The dies are electrically connected through a plurality of die attach pads, thus eliminating the need for wirebonding.

Multiphase synchronous buck converter

Disclosed in this specification is a multiphase buck converter package and process for forming such package. The package includes at least four dice and several parallel leads. The dice are electrically connected through a plurality of die attach pads, thus eliminating the need for wirebonding.

Disclosed in this specification is a wireless semiconductor package with multiple dies, at least two of which are attached to a thermally and electrically conductive heat sink. The package provides an efficient means for dissipating heat.

Wireless semiconductor package for efficient heat dissipation

A semiconductor package including stacked packages is disclosed. The semiconductor die package includes a first heat sink structure, a first semiconductor die attached to the first heat sink structure and having a first exterior surface, an intermediate conductive element attached to the first semiconductor die, a second semiconductor die attached to the second heat sink structure, and a second heat sink structure attached to the second semiconductor die and comprising a second exterior surface. A molding material is disposed around the first and second semiconductor dice, where the molding material exposes the first exterior surface of the first heat sink structure and exposes the second exterior surface of the second heat sink structure.

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Suzhou, China

Tiburcio A Maldo