WO2000039850A1 - Circuit electronique de puissance avec un radiateur de dissipation thermique - Google Patents
Circuit electronique de puissance avec un radiateur de dissipation thermique Download PDFInfo
- Publication number
- WO2000039850A1 WO2000039850A1 PCT/FR1999/002439 FR9902439W WO0039850A1 WO 2000039850 A1 WO2000039850 A1 WO 2000039850A1 FR 9902439 W FR9902439 W FR 9902439W WO 0039850 A1 WO0039850 A1 WO 0039850A1
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- WO
- WIPO (PCT)
- Prior art keywords
- sole
- radiator
- circuit according
- passages
- chip
- Prior art date
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
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- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
- H01L24/29—Structure, shape, material or disposition of the layer connectors prior to the connecting process of an individual layer connector
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- H01L2224/8319—Arrangement of the layer connectors prior to mounting
- H01L2224/83192—Arrangement of the layer connectors prior to mounting wherein the layer connectors are disposed only on another item or body to be connected to the semiconductor or solid-state body
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- H01L24/42—Wire connectors; Manufacturing methods related thereto
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- H01L2924/13055—Insulated gate bipolar transistor [IGBT]
Definitions
- the present invention relates to an electronic power circuit, of the type comprising at least one electronic power chip, a heat dissipation radiator having circulation passages for a heat transfer fluid, and an electrically conductive substrate for electrical connection of the chip, on which the chip is soldered and which is disposed between the radiator and the chip, the circuit further comprising electrical insulation means disposed between the chip and the circulation passages of the heat transfer fluid.
- the invention applies in particular to electronic power circuits for power converters used, for example, for driving electric vehicles such as railways.
- the radiator consists of a sole made for example of copper.
- the substrate forms the upper layer of a composite structure of conductor-insulator-conductor type, the lower layer of which is brazed to the radiator.
- the composite structure provides both a heat transfer and electrical insulation function.
- the chips are generally semiconductor components which have connection pads of soldering material on their face opposite to that soldered on the substrate.
- the connection pads are intended to be soldered to one or more conductors which ensure, with the substrate, the electrical connection of the chips with the outside.
- the heat dissipation radiator is intended to keep the temperature to which the chips are subjected below 125 ° C.
- An object of the invention is to solve this problem by providing an electronic power circuit of the aforementioned type and of increased cooling capacity.
- the subject of the invention is an electronic power circuit of the aforementioned type, characterized in that the means of electrical insulation comprise a soleplate of the radiator made of electrically insulating ceramic and good conductor of heat, the soleplate having channels opening into a first of its faces, and in that the radiator further comprises a closure element, which is attached to the first face of the sole to delimit, with the channels, the circulation passages of the heat-transfer fluid.
- the circuit can comprise one or more of the following characteristics, taken alone or according to all technically possible combinations: - said substrate is placed directly on the sole,
- said substrate is disposed on a second face of the sole opposite to said first face
- said closure element is made of plastic
- the circuit comprises a mechanism for fixing the closure element to the sole
- the fixing mechanism comprises means for fixing by elastic engagement
- Said closure element comprises means for supplying the heat transfer fluid into said passages and means for discharging the heat transfer fluid from said passages, and - the sole is made of aluminum nitride.
- - Figure 2 is a schematic bottom view of the sole of the radiator of the circuit of Figure 1;
- - Figure 3 is a schematic section of the circuit taken along the line III-III of Figure 1;
- FIG. 4 is a schematic top view of the radiator closure plate to the circuit of Figure 1.
- FIG. 1 schematically illustrates an electronic power circuit 1 intended to form means for switching an inverter for an electric traction railway vehicle.
- This circuit 1 essentially comprises power semiconductor components or chips, namely six IGBT transistors 2 and twelve diodes 3, and a radiator 4 for cooling and supporting the chips 2 and 3.
- the radiator 4 itself comprises a soleplate 6 and a closing plate 7.
- the sole 6 is a plate made of electrically insulating and heat conductive ceramic, for example aluminum nitride
- This sole 6 has a rectangular shape with rounded corners, 150 mm in length and 67 mm in width. The thickness of the sole 6 is between approximately 3 and 4 mm.
- the sole 6 comprises a first face or lower face 8 and a second face or upper face 9, which is partially covered by a coating of 0.3 mm thick, electrically conductive, and made of nickel-plated copper. It will be noted that the thicknesses of this coating and of the sole 6 have been exaggerated in FIG. 3 for reasons of visibility.
- this coating comprises a substrate 10, of generally rectangular shape with rounded corners, and which extends over the majority of the upper face 9.
- the substrate 10 is placed directly on the face 9 of the sole 6. More specifically, the substrate 10 extends practically over the entire length of the upper face 9 and over part of its width at a short distance from one of its edges (below in FIG. 1).
- the substrate 10 internally delimits eight rectangular savings 11 with rounded corners at the level of which the face 9 is exposed.
- the savings are identical, spaced from each other, and regularly arranged in two sets of four within the substrate 10. Their dimensions are approximately 8 mm ⁇ 16 mm.
- the nickel-plated copper coating also comprises a series of six identical rectangular conductive tracks 13, spaced apart from one another, arranged next to the substrate 10 and at a distance from it. This series of tracks 13 extends substantially over the entire length of the upper face 9. The dimensions of these tracks 13 are approximately 5 mm ⁇ 13 mm.
- nickel-plated copper includes another conductive track 14, rectangular and elongated, which extends next to the series of tracks
- the track 14 extends over practically the entire length of the face 9 and has a width d '' about 5 mm.
- the semiconductor chips of power 2 and 3 are soldered by their lower faces on the substrate 10.
- the soldering operation was for example carried out by interposing a strip of a lead-tin-silver alloy between each chip 2, 3 and the substrate 10.
- An IGBT transistor 2 is arranged on each side of a savings 11, while two diodes 3 are arranged on each side of a savings 11.
- the electrical connection to the outside of the power electronic chips 2 and 3 is provided via the substrate 10, conductive tracks 13 and 14, and conductors soldered on the pads (not shown) of the upper faces of the chips 2 and 3.
- the underside 8 of the sole 6 is provided with seventeen through channels or transverse grooves 18 of square section, from 0.4 to 0.6 mm in width and from 1 to 2 mm in depth.
- the channels 18 are spaced regularly from each other by about 0.7 to 0.8 mm.
- the channels 18 are produced by a diamond grinding wheel grooved in a single pass.
- the zone in which these channels 18 are formed does not extend over the whole of the lower face 8 of the sole 6, so that this zone defines, with the edge of the lower face 8, a peripheral region 19 of about 10 mm wide around its entire circumference.
- the closure plate 7 has a thickness of approximately 25 mm and has a rectangular shape with dimensions clearly greater than those of the plate 1, namely a length of approximately 190 mm and a width of approximately 85 mm.
- the plate 7 is made of plastic, for example polyetherimide (PEI)
- two parallel orifices or longitudinal recesses 20 and 21 pass right through the plate 7.
- the ends 22 of these recesses 20 and 21, which open into the edge of the plate 7, have flared parts for the connection of the recesses 20 and 21 to conduits, so that these recesses 20 and 21 play the functions of collecting the inlet and outlet of a heat-transfer fluid as will be described later.
- the recesses 20 and 21 open into the upper face 24 of the plate 7, by means of elongated rectangular openings 25 situated in a central region of the upper face 24.
- the lower face 8 of the sole 6 is sealingly bonded by its peripheral region 19 to the upper face 24 of the plate 7.
- peripheral region 19 then surrounds the openings 25.
- a fixing mechanism not shown, and notably comprising elastic engagement or clipping means, can complete the fixing of the sole 6 on the plate 7.
- the zone 30 of the upper face 24 situated between the openings can complete the fixing of the sole 6 on the plate 7.
- passages 31 (FIG. 3) of rectangular section closed in leaktight manner. These passages 31 lead out near their ends, through the openings 25, in the recesses 20 and 21 of the plate 7.
- the recess 20 is connected by its two ends 22 to a source of heat transfer fluid and the recess 21 is connected by its two ends 22 to a device suitable for discharging this heat transfer fluid.
- the heat transfer fluid for example water
- the heat transfer fluid for example water
- the heat transfer fluid is then brought through the recess 20 to a first end of the passages 31 which it crosses while heating by cooling the semiconductor chips 2 and 3, before being evacuated to proximity of the other end of the passages 31 through the recess 21.
- a ceramic such as AIN for producing the sole 8 and the low number of interfaces between different materials located between the passages 31 and the semiconductor chips 2 and 3
- the thermal resistance to overcome to cool these chips is relatively low.
- the ribs 32 ( Figures 2 and 3) delimited by the channels 18 therebetween, form thermal fins which also contribute to reducing this thermal resistance.
- the sole 8 also provides an electrical insulation function, in particular with respect to the water circulating in the passages 31.
- the cooling capacity of the power electronic circuit 1 is relatively high so that it can be used with a high nominal current.
- the invention makes it possible either to increase the overall performance of a power electronic circuit comprising a given number of semiconductor chips, or, for a given nominal current, to reduce the overall cost price of an electronic circuit power.
- the invention may be used in vehicles other than railway vehicles, for example electric motor vehicles, but also in fields of application other than that of vehicles.
- the sole can be made of berylium oxide.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU60945/99A AU6094599A (en) | 1998-12-28 | 1999-10-11 | Electronic power circuit with heat dissipating radiator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/16500 | 1998-12-28 | ||
FR9816500A FR2787920B1 (fr) | 1998-12-28 | 1998-12-28 | Procede d'assemblage d'une puce a un element de circuit par brasage |
Publications (1)
Publication Number | Publication Date |
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WO2000039850A1 true WO2000039850A1 (fr) | 2000-07-06 |
Family
ID=9534556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/002439 WO2000039850A1 (fr) | 1998-12-28 | 1999-10-11 | Circuit electronique de puissance avec un radiateur de dissipation thermique |
Country Status (3)
Country | Link |
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AU (1) | AU6094599A (fr) |
FR (1) | FR2787920B1 (fr) |
WO (1) | WO2000039850A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2811475B1 (fr) * | 2000-07-07 | 2002-08-23 | Alstom | Procede de fabrication d'un composant electronique de puissance, et composant electronique de puissance ainsi obtenu |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3361195A (en) * | 1966-09-23 | 1968-01-02 | Westinghouse Electric Corp | Heat sink member for a semiconductor device |
DE3329325A1 (de) * | 1982-09-03 | 1984-03-08 | Peter 2563 Ipsach Herren | Kuehlkoerper zur fluessigkeitskuehlung wenigstens eines elektrischen leistungselementes |
DE3605554A1 (de) * | 1986-02-21 | 1987-08-27 | Licentia Gmbh | Verschiessbarer kuehlkoerper |
WO1994007265A1 (fr) * | 1992-09-22 | 1994-03-31 | Siemens Aktiengesellschaft | Dissipateur de chaleur a liquide refrigerant |
FR2737608A1 (fr) * | 1995-08-02 | 1997-02-07 | Alsthom Cge Alcatel | Dispositif electronique de puissance pourvu de moyens ameliores d'evacuation de la chaleur |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS601837A (ja) * | 1983-06-20 | 1985-01-08 | Fuji Electric Co Ltd | 半導体装置 |
US5413964A (en) * | 1991-06-24 | 1995-05-09 | Digital Equipment Corporation | Photo-definable template for semiconductor chip alignment |
DE4201931C1 (fr) * | 1992-01-24 | 1993-05-27 | Eupec Europaeische Gesellschaft Fuer Leistungshalbleiter Mbh + Co.Kg, 4788 Warstein, De | |
JPH0621139A (ja) * | 1992-06-30 | 1994-01-28 | Oki Electric Ind Co Ltd | ワイヤーボンディング装置とその方法 |
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1998
- 1998-12-28 FR FR9816500A patent/FR2787920B1/fr not_active Expired - Fee Related
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1999
- 1999-10-11 WO PCT/FR1999/002439 patent/WO2000039850A1/fr not_active Application Discontinuation
- 1999-10-11 AU AU60945/99A patent/AU6094599A/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3361195A (en) * | 1966-09-23 | 1968-01-02 | Westinghouse Electric Corp | Heat sink member for a semiconductor device |
DE3329325A1 (de) * | 1982-09-03 | 1984-03-08 | Peter 2563 Ipsach Herren | Kuehlkoerper zur fluessigkeitskuehlung wenigstens eines elektrischen leistungselementes |
DE3605554A1 (de) * | 1986-02-21 | 1987-08-27 | Licentia Gmbh | Verschiessbarer kuehlkoerper |
WO1994007265A1 (fr) * | 1992-09-22 | 1994-03-31 | Siemens Aktiengesellschaft | Dissipateur de chaleur a liquide refrigerant |
FR2737608A1 (fr) * | 1995-08-02 | 1997-02-07 | Alsthom Cge Alcatel | Dispositif electronique de puissance pourvu de moyens ameliores d'evacuation de la chaleur |
Also Published As
Publication number | Publication date |
---|---|
AU6094599A (en) | 2000-07-31 |
FR2787920B1 (fr) | 2003-10-17 |
FR2787920A1 (fr) | 2000-06-30 |
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