ELECTRONIC CONTROL DEVICE

• US 20120300405A1
• Filed: 11/25/2010
• Published: 11/29/2012
• Est. Priority Date: 12/10/2009
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Barth, Heinrich, Weeber, Volker, Schertlen, Ralph
• Granted Patent: US 8,929,078 B2
• Time in Patent Office: Days
• US Class Current: 361/709
• CPC Class Codes: H01L 23/552 Protection against radiation, e.g. light or electromagnetic waves
• CPC Class Codes: H01L 25/16 the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H05K 7/20418 the radiating structures being additional and fastened onto the housing
• CPC Class Codes: H05K 7/20854 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20863 takes precedence
• CPC Class Codes: H05K 9/0022 of components mounted on printed circuit boards [PCB] shields integrated within component packages H01L23/552; shields integrated within PCB H05K1/0218

Abstract

The invention relates to an electronic control device (10) having electronic components (160, 162) on a circuit board (110) which are shielded from electrical and/or magnetic interference fields. According to the invention, an electrically conductive sheet metal part (170) is arranged on the circuit board (110) which forms a Faraday cage for the electronic components (160, 162) with the circuit board. The electrically conductive sheet metal part (170) is furthermore in thermal contact to the electronic components (160, 162) and in thermal contact to the housing (100) of the control device (10) and thereby deflects heat from the electronic components (160, 162) into the housing (100).

Claims

1. An electronic control device comprising a housing, in which at least one circuit board is disposed, wherein at least one electronic component is disposed on the circuit board, wherein the electronic control device has means for shielding from electrical and/or magnetic fields, wherein the means for shielding from electrical and/or magnetic fields comprises at least one electrically conductive shielding element which is disposed such that at least the electrically conductive shielding element and the circuit board form a Faraday cage for at least one associated electronic component and wherein the electrically conductive shielding element is connected to a ground potential, wherein at least one electronic component with the backside thereof, which particularly comprises a backside metallization, is in conductive contact with the at least one electrically conductive shielding element.

2. The electronic control device according to claim 1, wherein at least one metal frame is disposed around at least one electronic component, the electrically conductive shielding element being mounted to said metal frame.

3. The electronic control device according to claim 1, wherein at least one electrically conductive shielding element is mounted by means of a snap connection or is soldered or welded.

4. The electronic control device according to claim 1, wherein the housing has an opening which is closed by a heat sink disposed at said housing.

5. The electronic control device according to claim 1, wherein the electrically conductive shielding element comprises at least one first region, which is in thermal contact to the housing or to a heat sink disposed at said housing, and comprises at least one second region, which is in thermal contact to at least one associated power component.

8. The electronic control unit according to claim 1, wherein at least one power component has a heat slug element on the side thereof facing away from the circuit board.

7. The electronic control unit according to claim 7, wherein the second regions correspond to the respective installation heights of the associated power components.

6. The electronic control device according to claim 7, wherein the second regions are configured as recesses or raised sections, the positions of which correspond to the positions of the power components on the circuit board associated with said second regions.