DE102004009082A1 - Power MOSFET for motor vehicle technology has vertical power MOSFET in semiconductor body with adjacent temperature sensor over insulation filled cavity - Google Patents
Power MOSFET for motor vehicle technology has vertical power MOSFET in semiconductor body with adjacent temperature sensor over insulation filled cavity Download PDFInfo
- Publication number
- DE102004009082A1 DE102004009082A1 DE200410009082 DE102004009082A DE102004009082A1 DE 102004009082 A1 DE102004009082 A1 DE 102004009082A1 DE 200410009082 DE200410009082 DE 200410009082 DE 102004009082 A DE102004009082 A DE 102004009082A DE 102004009082 A1 DE102004009082 A1 DE 102004009082A1
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- semiconductor body
- temperature sensor
- cavity
- power mosfet
- fet
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 27
- 238000009413 insulation Methods 0.000 title 1
- 239000012212 insulator Substances 0.000 abstract description 2
- 239000011810 insulating material Substances 0.000 description 7
- 230000005669 field effect Effects 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000001465 metallisation Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XOJVVFBFDXDTEG-UHFFFAOYSA-N Norphytane Natural products CC(C)CCCC(C)CCCC(C)CCCC(C)C XOJVVFBFDXDTEG-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7803—Vertical DMOS transistors, i.e. VDMOS transistors structurally associated with at least one other device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0657—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape of the body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0642—Isolation within the component, i.e. internal isolation
- H01L29/0649—Dielectric regions, e.g. SiO2 regions, air gaps
- H01L29/0653—Dielectric regions, e.g. SiO2 regions, air gaps adjoining the input or output region of a field-effect device, e.g. the source or drain region
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/402—Field plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Abstract
Description
Die vorliegende Erfindung betrifft eine Leistungs-MOS-FET-Anordnung (MOS = Metall-Oxid-Halbleiter, FET = Feldeffekttransistor) mit einem Temperatursensor, bei der in einem Halbleiterkörper ein vertikaler Leistungs-MOS-FET und angrenzend an diesen ein Temperatursensor ausgebildet sind.The The present invention relates to a power MOS-FET device (MOS = Metal oxide semiconductor, FET = field effect transistor) with a temperature sensor, when in a semiconductor body a vertical power MOS-FET and adjacent to this a temperature sensor are formed.
So genannte PROFETs (PROFET = protected bzw. geschützter FET) werden bevorzugt in der Kraftfahrzeugtechnik eingesetzt. Es handelt sich dabei um mit Temperatursensoren versehene MOS-FETs, bei denen die Temperatursensoren die Temperatur des MOS-FETs feststellen, so dass dieser bei Überschreiten von bestimmten Grenztemperaturen geschützt werden kann. Dies kann beispielsweise durch verstärkte Abführung der Wärme aus dem Bereich des MOS-FETs oder gegebenenfalls auch durch dessen Abschalten geschehen.So called PROFETs (PROFET = protected or protected FET) are preferred used in automotive engineering. It is about equipped with temperature sensors MOS-FETs, where the temperature sensors determine the temperature of the MOS-FET so that it is exceeded can be protected from certain limit temperatures. This can for example, by reinforced removal the heat from the area of the MOS-FET or possibly also by its Shut down done.
Für die Funktion eines PROFETs ist von großer Bedeutung, dass der Temperatursensor die tatsächliche Temperatur des MOS-FETs und nicht eine verfälschte Temperatur misst. Das heißt, am Ort des Temperatursensors sollte möglichst die gleiche Temperatur herrschen wie am Ort des durch diesen zu schützenden MOS-FETs.For the function a PROFET is of great size Meaning that the temperature sensor the actual temperature of the MOS-FETs and not a fake one Temperature measures. This means, at the location of the temperature sensor should preferably the same temperature prevail as in the place of the protected by these MOS-FETs.
Ein Temperatursensor in einem PROFET kann beispielsweise aus einem Bipolartransistor bestehen. Wird ein solcher Bipolartransistor im gleichen Halbleiterkörper wie ein MOS-FET neben diesem bei gemeinsamer Drain -bzw. Kollektorelektrode angeordnet, so kann aus der an der Emitterelektrode abgegriffenen Spannung oder dem dort gemessenen Strom bei bekannter Spannung an der als Kollektor wirkenden Drainelektrode auf die Temperatur geschlossen werden.One Temperature sensor in a PROFET, for example, from a bipolar transistor consist. If such a bipolar transistor in the same semiconductor body as a MOS-FET next to this at a common drain -bzw. collector electrode arranged, so can from the tapped off at the emitter electrode Voltage or the current measured at a known voltage the collector acting drain electrode is closed to the temperature become.
Es ist nun Aufgabe der vorliegenden Erfindung, eine Leistungs-MOS-FET-Anordnung anzugeben, bei der ein Temperatursensor die möglichst unverfälschte Temperatur eines neben ihm vorgesehenen MOS-FETs erfährt.It Now is an object of the present invention, a power MOS-FET device specify, in which a temperature sensor the most pristine temperature a MOS FET next to him learns.
Diese Aufgabe wird bei einer Leistungs-MOS-FET-Anordnung der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass der Halbleiterkörper im Bereich unterhalb des Temperatursensors einen erhöhten Wärmewiderstand aufweist.These Task is in a power MOS-FET arrangement of the above mentioned type according to the invention thereby solved, that the semiconductor body in the area below the temperature sensor increased thermal resistance having.
Dieser erhöhte Wärmewiderstand kann durch einen Hohlraum im Halbleiterkörper gebildet sein. Dabei ist es möglich, dass der Hohlraum wenigstens teilweise mit einem Isolator gefüllt ist. Auch kann der Hohlraum vollständig in den Halbleiterkörper eingebettet sein.This increased thermal resistance may be formed by a cavity in the semiconductor body. It is it is possible that the cavity is at least partially filled with an insulator. Also, the cavity can be completely in the semiconductor body be embedded.
Mit anderen Worten, bei der erfindungsgemäßen Leistungs-MOS-FET-Anordnung wird unterhalb eines vorzugsweise in der Form eines Bipolartransistors ausgebildeten Temperatursensors ein Hohlraum vorgesehen. Infolge des durch den Hohlraum erhöhten Wärmewiderstandes erfährt dieser dann Temperatursensor die nahezu gleiche und damit unverfälschte Temperatur des neben ihm an der Oberfläche des Halbleiterkörpers vorgesehenen MOS-FETs.With In other words, in the power MOS-FET device according to the invention below a preferably in the form of a bipolar transistor trained temperature sensor provided a cavity. As a result of the increased through the cavity heat resistance learns this then temperature sensor the almost same and therefore unadulterated temperature the next to him on the surface of the semiconductor body provided MOS FETs.
Der Hohlraum kann auf relativ einfache Weise durch Ätzen oder dergleichen von der Rückseite des Halbleiterkörpers her in diesen eingebracht werden. Er schafft einen erhöhten Wärmewiderstand im Bereich unterhalb des Temperatursensors, so dass dieser Temperatursensor seitlich die unverfälschte Temperatur des neben ihm vorgesehenen MOS-FETs erfährt.Of the Cavity can be removed in a relatively simple manner by etching or the like of the Back of the Semiconductor body be introduced into this. He creates an increased thermal resistance in the area below the temperature sensor, so this temperature sensor laterally the unadulterated temperature the next provided him MOS FETs learns.
Mit der erfindungsgemäßen Leistungs-MOS-FET-Anordnung kann also auf einfache Weise sichergestellt werden, dass der Temperatursensor tatsächlich die gleiche Temperatur misst, die am Ort eines MOS-FETs herrscht, so dass ein zuverlässiger Betrieb der Anordnung gewährleistet ist.With the power MOS-FET device according to the invention So it can be easily ensured that the temperature sensor indeed Measures the same temperature that prevails at the location of a MOS-FET making a reliable one Operation of the arrangement ensured is.
Nachfolgend wird die Erfindung anhand der Zeichnung näher erläutert, in deren einziger Figur ein Schnittbild einer erfindungsgemäßen Leistungs-MOS-FET-Anordnung dargestellt ist.following The invention will be explained in more detail with reference to the drawing, in whose only figure a sectional view of a power MOS-FET device according to the invention is shown.
Es sei angemerkt, dass die in dem folgenden Ausführungsbeispiel angegebenen Leitungstypen selbstverständlich auch jeweils umgekehrt sein können. Das heißt, der n-Leitungstyp kann durch den p-Leitungstyp ersetzt werden, wenn anstelle des p-Leitungstyps der n-Leitungstyp vorgesehen wird.It It should be noted that indicated in the following embodiment Of course, line types also be reversed. This means, The n-type conductivity can be replaced by the p-type conductivity if is provided instead of the p-type conductivity of the n-type conductivity.
Für den Halbleiterkörper wird in bevorzugter Weise Silizium verwendet. Jedoch ist die Erfindung ohne weiteres auch auf andere Halbleitermaterialien, wie beispielsweise Siliziumcarbid, Verbindungshalbleiter AIIIBV usw. anwendbar.For the semiconductor body becomes preferably used silicon. However, the invention is without also on other semiconductor materials, such as Silicon carbide, compound semiconductor AIIIBV, etc. applicable.
Auf
einer Vorderseite
Eine
zur Vorderseite
Für den Halbleiterkörper
Auf
der linken bzw. rechten Seite von
Ein
Abstand d zwischen dem Übergang
zwischen den Zonen
Erfindungsgemäß ist in
den zum Sensor gegenüberliegenden
Rückseitenbereich
des Halbleiterkörpers
Infolge
des Hohlraumes
- 11
- HalbleiterkörperSemiconductor body
- 22
- Drain-KontaktzoneDrain contact zone
- 33
- Drainzonedrain region
- 44
- BodyzoneBody zone
- 55
- Sourcezonesource zone
- 66
- Basiszonebase zone
- 77
- Emitterzoneemitter region
- 88th
- Vorderseitefront
- 99
- Isolierschichtinsulating
- 1010
- Gateelektrodengate electrodes
- 1111
- Sourceelektrodensource electrodes
- 1212
- Emitterelektrodeemitter electrode
- 1313
- Rückseiteback
- 1414
- Drain-MetallisierungDrain metallization
- 1515
- Lotschichtsolder layer
- 1616
- Leiterrahmenleadframe
- 1717
- Hohlraumcavity
- 1818
- Isoliermaterialinsulating material
- 1919
- eingebauter Hohlraumbuilt cavity
- SS
- Source-KontaktSource contact
- DD
- Drain-KontaktDrain contact
- GG
- Gate-KontaktGate contact
- TSTS
- Temperatursensor-KontaktTemperature sensor contact
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410009082 DE102004009082B4 (en) | 2004-02-25 | 2004-02-25 | Power MOS FET arrangement with temperature sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410009082 DE102004009082B4 (en) | 2004-02-25 | 2004-02-25 | Power MOS FET arrangement with temperature sensor |
Publications (2)
Publication Number | Publication Date |
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DE102004009082A1 true DE102004009082A1 (en) | 2005-09-22 |
DE102004009082B4 DE102004009082B4 (en) | 2006-08-24 |
Family
ID=34877098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410009082 Expired - Fee Related DE102004009082B4 (en) | 2004-02-25 | 2004-02-25 | Power MOS FET arrangement with temperature sensor |
Country Status (1)
Country | Link |
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DE (1) | DE102004009082B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7988354B2 (en) | 2007-12-26 | 2011-08-02 | Infineon Technologies Ag | Temperature detection for a semiconductor component |
DE102012006009A1 (en) | 2012-03-24 | 2013-09-26 | Volkswagen Aktiengesellschaft | Method for determining junction temperature of pn-transition in e.g. MOSFET for use in energy converter, involves determining junction temperature based on determined time duration and power path voltage |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5642252A (en) * | 1993-08-18 | 1997-06-24 | Hitachi, Ltd. | Insulated gate semiconductor device and driving circuit device and electronic system both using the same |
US20030038332A1 (en) * | 2000-01-12 | 2003-02-27 | Kimura Mitsuteru A | Method and apparatus for temperature measurement, and themal infrared image sensor |
-
2004
- 2004-02-25 DE DE200410009082 patent/DE102004009082B4/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5642252A (en) * | 1993-08-18 | 1997-06-24 | Hitachi, Ltd. | Insulated gate semiconductor device and driving circuit device and electronic system both using the same |
US20030038332A1 (en) * | 2000-01-12 | 2003-02-27 | Kimura Mitsuteru A | Method and apparatus for temperature measurement, and themal infrared image sensor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7988354B2 (en) | 2007-12-26 | 2011-08-02 | Infineon Technologies Ag | Temperature detection for a semiconductor component |
DE102012006009A1 (en) | 2012-03-24 | 2013-09-26 | Volkswagen Aktiengesellschaft | Method for determining junction temperature of pn-transition in e.g. MOSFET for use in energy converter, involves determining junction temperature based on determined time duration and power path voltage |
Also Published As
Publication number | Publication date |
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DE102004009082B4 (en) | 2006-08-24 |
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OP8 | Request for examination as to paragraph 44 patent law | ||
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |