Circuit arrangement

• US 6,930,373 B2
• Filed: 08/27/2003
• Issued: 08/16/2005
• Est. Priority Date: 02/27/2001
• Status: Expired due to Fees

• Current Assignee: Continental Automotive GmbH (Continental AG)
• Original Assignee: Siemens AG
• Inventors: Auerswald, Gerd, Kulig, Stefan, Kirchberger, Michael, Rappl, Hans, Gross, Kurt
• Primary Examiner(s): Nelms, David
• Assistant Examiner(s): Nguyen, Dao H.
• Application Number:
  US10/649,839
• Publication Number:
  US 20040169268A1
• Time in Patent Office: 720 Days
• Field of Search: 257/579, 257/586, 257/593, 257/666, 363/56.02, 363/132, 363/141, 363/720
• US Class Current: 257/579
• CPC Class Codes: H01L 2224/45099 Material
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/4824 Connecting between the body and an opposite side of the item with respect to the body
• CPC Class Codes: H01L 2224/49 of a plurality of wire connectors
• CPC Class Codes: H01L 23/36 Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks H01L23/28, H01L23/40, H01L23/42, H01L23/44, H01L23/46 take precedence; heating H01L23/345
• CPC Class Codes: H01L 24/48 of an individual wire connector
• CPC Class Codes: H01L 24/49 of a plurality of wire connectors
• CPC Class Codes: H01L 25/162 the devices being mounted on two or more different substrates
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/01004 Beryllium [Be]
• CPC Class Codes: H01L 2924/01005 Boron [B]
• CPC Class Codes: H01L 2924/0101 Neon [Ne]
• CPC Class Codes: H01L 2924/01013 Aluminum [Al]
• CPC Class Codes: H01L 2924/01015 Phosphorus [P]
• CPC Class Codes: H01L 2924/01019 Potassium [K]
• CPC Class Codes: H01L 2924/0102 Calcium [Ca]
• CPC Class Codes: H01L 2924/01023 Vanadium [V]
• CPC Class Codes: H01L 2924/01029 Copper [Cu]
• CPC Class Codes: H01L 2924/01031 Gallium [Ga]
• CPC Class Codes: H01L 2924/01052 Tellurium [Te]
• CPC Class Codes: H01L 2924/01065 : Terbium [Tb]
• CPC Class Codes: H01L 2924/13055 : Insulated gate bipolar transistor [IGBT]
• CPC Class Codes: H01L 2924/19041 : being a capacitor

Abstract

The circuit has a power stage (LE) with heat generating components mounted around at least one component that generates less heat mounted in an inner region. The heat generating components are connected to at least one conducting metal body (K1) that is mounted on a cooling body (KK) in electrically insulated manner to cool the components. The cooling body encloses the inner region.

Claims

1. A circuit arrangement comprising:

a power section, which comprises heat-generating components comprising first and second chips and at least one component producing less heat,

the component producing less heat being arranged in an internal region of the circuit arrangement, and

the heat-generating components being arranged around the internal region and being mounted on one of at least two metallic bodies acting as electrical conductors, said bodies being electrically connected to the heat-generating components, wherein

the bodies are arranged in an electrically insulating manner on a heat sink, in order to cool the heat-generating components, said bodies comprising a first metallic body and a second metallic body, said first chips being mounted on the first metallic body running along the outer edge of the heat sink, and said second chips being mounted on the second metallic body covering the internal region of the heat sink.

2. A circuit arrangement according to claim 1, further comprising:

a logic section, which is arranged above the internal region,

wherein the logic section is electrically connected to the power section via bonding connections.

3. A circuit arrangement according to claim 2, further-comprising

a third metallic body, covering the internal region and arranged above the component producing less heat,

said third metallic body having at least one opening above the internal region and the component producing less heat being electrically connected to the third metallic body via a first wired bond, which is led through the opening, and

a carrier, arranged in an electrically insulating manner above the internal region and above the third metallic body,

the surface of the carrier facing the third metallic body having an indentation in the region of the first wired bond, to accommodate the first wired bond,

wherein the surface of the carrier facing away from the third metallic body being essentially flat, and

the logic section arranged in an electrically insulating manner on the surface of the carrier facing away from the third metallic body.

4. A circuit arrangement according to claim 3, wherein the carrier comprises essentially aluminum.

5. A circuit arrangement according to claim 1, further comprising:

a third metallic body covering the internal region arranged above the component producing less heat,

wherein

the third metallic body comprises at least one opening above the internal region,

the component producing less heat being embodied as a capacitor and being electrically connected to the third metallic body via a first wired bond, which is led through the opening,

the heat-generating components being embodied as bare first chips and second chips, each containing a transistor,

the first chips being electrically connected to the first metallic body via bonding connections, and

the second chips being electrically connected to the second metallic body via bonding connections.

6. A circuit arrangement according to claim 1,

wherein the first metallic body, the second metallic body and the third metallic body are comprised of essentially copper.

7. A circuit arrangement comprising:

a set of first chips,

a set of second chips

a heat sink having an inner top surface region and an outer top surface region of lesser area,

a first metallic body arranged on top of the heat sink and substantially covering the inner top surface region of the heat sink, and

a set of metallic bodies arranged on top of the heat sink running along the outer top surface region of the heat sink and surrounding the first metallic body, wherein the first chips are mounted on the first metallic body and the second chips are mounted on the set of metallic bodies.

8. The arrangement of claim 7, wherein the first metallic body and the set of metallic bodies comprise copper.

9. The arrangement of claim 7, wherein the chips are electrically connected to the metallic body and bodies via bonding connections.

10. The arrangement of claim 7, wherein the first metallic body and the set of metallic bodies comprise aluminum.

11. The arrangement of claim 7, wherein the first chips have no packaging.

12. The arrangement of claim 7, wherein the second chips have no packaging.

13. The arrangement of claim 7, wherein the chips have no packaging.

14. The arrangement of claim 7, wherein the first chips comprise a transistor.

15. The arrangement of claim 7, wherein the second chips comprise a transistor.

16. A circuit arrangement comprising:

a power section, which comprises heat-generating components and at least one component producing less heat,

the component producing less heat being arranged in an internal region of the circuit arrangement, and

the heat-generating components being arranged around the internal region and being mounted on first and second metallic bodies acting as an electrical conductors, said bodies being electrically connected to the heat-generating components,

the bodies are arranged in an electrically insulating manner in the region of the heat-generating components on a heat sink, in order to cool the heat-generating components,

the heat sink running underneath the internal region of the circuit arrangement with the components producing less heat,

a third metallic body comprising a board covering the internal region and arranged above the component producing less heat,

the board comprising at least one opening above the internal region,

the component producing less heat being embodied as a capacitor and being electrically connected to the third metallic board via a first wired bond, which is led through the opening,

the heat-generating components being embodied as bare first and second chips, each containing a transistor and being mounted on the two metallic bodies, the first chips mounted on the first metallic body comprising a board, the second chips mounted on the second metallic body comprising a bar,

the first metallic body running along the outer edge of the heat sink,

the second metallic body covering the internal region and inner edge of the heat sink,

the first chips electrically connected to the first metallic body via bonding connections, and

the second chips electrically connected to the second metallic body via bonding connections.

17. A circuit arrangement comprising:

a power section, which comprises heat-generating components and at least one component producing less heat,

the component producing less heat being arranged in an internal region of the circuit arrangement, and

the heat-generating components being arranged around the internal region and being mounted on at least one metallic body acting as an electrical conductor, said body being electrically connected to the heat-generating components, wherein

the body is arranged in an electrically insulating manner in the region of the heat-generating components on a heat sink, in order to cool the heat-generating components,

the heat sink running underneath the internal region of the circuit arrangement with the components producing less heat,

a logic section, arranged above the internal region,

said logic section electrically connected to the power section via bonding connections.