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Power semiconductor systems having inductor modules, and methods of manufacturing inductor modules and power semiconductor systems having inductor modules

A technology of power semiconductors and inductors, applied in the manufacture of inductors/transformers/magnets, semiconductor devices, DC power input conversion to DC power output, etc.

Pending Publication Date: 2019-03-15
INFINEON TECH AUSTRIA AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generate losses in a real system at connection paths in a power system

Method used

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  • Power semiconductor systems having inductor modules, and methods of manufacturing inductor modules and power semiconductor systems having inductor modules
  • Power semiconductor systems having inductor modules, and methods of manufacturing inductor modules and power semiconductor systems having inductor modules
  • Power semiconductor systems having inductor modules, and methods of manufacturing inductor modules and power semiconductor systems having inductor modules

Examples

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Embodiment Construction

[0018] Embodiments described herein provide embedded PCB inductor modules fabricated using standard PCB processing using PCB material and ferrite sheets. The inductor module can be mounted on top of the power stage module of the DC-DC converter using standard soldering or lamination and via drilling processes. The size and shape of the inductor module can be optimized to match the power stage module to which the inductor module is attached. Utilizing such an inductor module reduces overall system cost and size while allowing customized (size, shape, inductance / impedance values, etc.) inductor modules to be fabricated for various applications.

[0019] The inductor module includes embedded ferrite sheets and metal wiring on both sides of the module connected together by plated through holes. The inductor module can be integrated into a power stage or other module with embedded die(s) using soldering or lamination processes. Ferrite sheets are used as the inductor core layer i...

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Abstract

The invention provides power semiconductor systems having inductor modules, and methods of manufacturing inductor modules and power semiconductor systems having inductor modules. A power semiconductorsystem includes a power stage module having one or more power transistor dies attached to or embedded in a first printed circuit board, and an inductor module attached to the power stage module and having an inductor electrically connected to an output node of the power stage module. The inductor is formed from a ferrite sheet embedded in a second printed circuit board and windings patterned intothe second printed circuit board. Corresponding methods of manufacturing the power semiconductor system and the inductor module are also disclosed.

Description

technical field [0001] The present application relates to inductor modules for power semiconductor systems, in particular to inductor modules for attachment to power stage modules of power semiconductor systems. Background technique [0002] A DC-DC voltage regulator system, such as a buck converter, includes an arrangement of two power transistors, a gate driver IC, and an inductor to down-convert the voltage for the load. Losses in real systems are generated at connection paths in the power system. To minimize these parasitic losses, power transistors and gate driver ICs are often assembled together in a single power module, while the inductor is assembled alongside on the main PCB (printed circuit board). Losses depend on the distance and cross-section of the connecting wire between the transistor output (switching node) and the inductor terminals, therefore, a more ideal solution is required to position the inductor closer to the power module. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/155H01L25/16H01F37/00H01F41/00
CPCH01F37/00H01F41/00H01L25/16H02M3/158H02M3/04H02M3/003H02M1/0048H01F41/02H01F41/041H01F27/2804H01F27/24H01F27/245H01F17/0033H01F17/062H01F27/255H01F41/046H01F2027/065Y02B70/10H01L25/105Y10T29/4913H02M1/0054H02M3/155
Inventor F.德黑J.赫格劳尔P.帕尔姆A.N.索勒X.施勒格尔Z.尤马尔M.沃伊诺夫斯基
Owner INFINEON TECH AUSTRIA AG
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