CN209372256U - A kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution - Google Patents
A kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution Download PDFInfo
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- CN209372256U CN209372256U CN201920369577.8U CN201920369577U CN209372256U CN 209372256 U CN209372256 U CN 209372256U CN 201920369577 U CN201920369577 U CN 201920369577U CN 209372256 U CN209372256 U CN 209372256U
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- contact temperature
- temperature
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- crimp type
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Abstract
The utility model discloses a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution, including contact temperature-measuring element (10) and sequentially connected collector (1), submodule group, pcb board (8) and emitter (9) from top to bottom；The submodule group successively includes upper molybdenum sheet (2), chip (3), lower molybdenum sheet (4) and silver-colored gasket (5) from top to bottom；The lower molybdenum sheet (4) is provided with groove, and the lower molybdenum sheet (4) is opened reeded one side and contacted with the chip；The contact temperature-measuring element (10), is placed in the groove, contacts with the chip (3), and output end connects the pcb board (8).The setting of the utility model molybdenum sheet groove is so that contact temperature-measuring element can accurately obtain each junction temperature of chip distribution so that contact temperature-measuring element is able to apply in crimp type semiconductor devices from the influence of stress.
Description
Technical field
The utility model belongs to semiconductor devices field of temperature measurement, and in particular to a kind of crimp type semiconductor device inside temperature
The contact temperature-measuring system of distribution.
Background technique
For multi-chip scale groups of crimp type semiconductor devices in parallel, due to internal each physical field phase interaction
With so that occurring difference between each junction temperature of chip, and then being had an impact to device performance and reliability, become constraint device power etc.
One of an important factor for grade improves.Therefore, the accurate measurement of each junction temperature of chip becomes in crimp type semiconductor device application the most
One of the problem of concern.
Since crimping packing forms are very novel, the measurement method of crimp type IGBT device internal chip temperature distribution is still not
It is perfect.There are mainly three types of the methods of each chip temperature distribution of the device inside of measurement crimping at present:
1) temperature-sensitive electrical parameter method is widely applied crimp type semiconductor devices junction temperature measurement method at present, passes through measurement half
The electrical parameter of conductor device is converted to the junction temperature of semiconductor devices, and for single-chip devices, temperature-sensitive electrical parameter method can be with
The mean temperature approximation for obtaining chip replaces junction temperature, meets measurement demand, but for multichip device, temperature-sensitive electrical parameter method is only
The mean temperature of all chips can be obtained, each junction temperature of chip distribution situation can not be obtained.
2) measuring method needs to destroy device encapsulation structure and in surface japanning to be measured, is only capable of measuring outermost layer core
Piece side temperature, can not obtain the profiling temperatures of all chips.
3) contact measurement method need to arrange the temperature measurement structures such as thermoelectricity occasionally optical fiber, due to needing when crimping proper device operation
Certain pressure (1~2kN/cm2) is wanted to keep component touch, if being directly embedded in component touch face or being embedded in component, by
In the excessive damage that will affect measurement accuracy and even result in temperature measurement structure of stress, it is not possible at present each applied to crimping device inside
The measurement of chip temperature distribution.
Utility model content
The purpose of the utility model is to provide a kind of contact temperature-measuring systems of crimp type semiconductor device inside Temperature Distribution
System eliminates influence of the stress to temperature element by the transformation to molybdenum sheet structure, so that contact temperature-measuring element is applied,
To accurately obtain the junction temperature distribution of each chip.
To achieve the above object, the utility model provides following scheme:
A kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution, including contact temperature-measuring element
(10) and from top to bottom sequentially connected collector (1), submodule group, pcb board (8) and emitter (9)；
The submodule group successively includes upper molybdenum sheet (2), chip (3), lower molybdenum sheet (4) and silver-colored gasket (5) from top to bottom；It is described
Lower molybdenum sheet (4) is provided with groove, and the lower molybdenum sheet (4) is opened reeded one side and contacted with the chip (3)；
The contact temperature-measuring element (10), is placed in the groove, contacts with the chip (3), and output end connects institute
State pcb board (8).
Optionally, further include heat-conducting silicone grease (11), for fill up the contact temperature-measuring element (10) and the groove it
Between gap.
Optionally, the flute length of the groove is 6-18mm.
Optionally, the groove width of the groove is 0.4-2mm.
Optionally, the groove depth of the groove is 0.4-2mm.
Optionally, the long side of the groove is parallel with any side of the upper molybdenum sheet or lower molybdenum sheet.
Optionally, any side of the long side of the groove and the upper molybdenum sheet or lower molybdenum sheet is in 45 degree.
Optionally, the contact temperature-measuring element (10) is thermocouple.
Optionally, the contact temperature-measuring element (10) is temperature-measuring optical fiber.
Optionally, contact temperature-measuring element (10) temperature-measuring range is 0-200 DEG C.
According to specific embodiment provided by the utility model, the utility model discloses following technical effects: this is practical new
Contact temperature-measuring element is placed in the groove by carrying out slot treatment to molybdenum sheet, eliminates stress to temperature element by type
Influence, by around each chip arrange contact temperature-measuring element, can accurately obtain each junction temperature of chip distribution situation.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the contact temperature-measuring system structure of the utility model embodiment crimp type semiconductor device inside Temperature Distribution
Schematic diagram；
Fig. 2 is the contact temperature-measuring system part of the utility model embodiment crimp type semiconductor device inside Temperature Distribution
Enlarged diagram；
Fig. 3 is the contact temperature-measuring system molybdenum sheet of the utility model embodiment crimp type semiconductor device inside Temperature Distribution
Structural schematic diagram；
1- collector, the upper molybdenum sheet of 2-, 3- chip, molybdenum sheet under 4-, 5- silver gasket, 6- boss, 7- subelement frame, 8-PCB
Plate, 9- emitter, 10- contact temperature-measuring element, 11- heat-conducting silicone grease, 12- electrode flange, 13- ceramic cartridge, 14- lead.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of contact temperature-measuring systems of crimp type semiconductor device inside Temperature Distribution
System eliminates influence of the stress to temperature element by the transformation to molybdenum sheet structure, by arranging that contact is surveyed around each chip
Warm element, to accurately obtain each junction temperature of chip distribution.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Fig. 1 is the contact temperature-measuring system structure of the utility model embodiment crimp type semiconductor device inside Temperature Distribution
Schematic diagram, Fig. 2 are the contact temperature-measuring system part of the utility model embodiment crimp type semiconductor device inside Temperature Distribution
Enlarged diagram, as illustrated in fig. 1 and 2, the contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution includes
Contact temperature-measuring element 10 and from top to bottom sequentially connected collector 1, submodule group, pcb board 8, boss 6 and emitter 9；It is described
Boss 6 is connected as one with emitter 9, has hole on the pcb board 8, is clamped with the boss 6；
The submodule group is fixed by subelement frame 7, from top to bottom successively includes upper molybdenum sheet 2, chip 3, lower molybdenum sheet 4 and silver
Gasket 5；The upper molybdenum sheet 2 and/or lower molybdenum sheet 4 are provided with groove, the upper molybdenum sheet 2 and/or lower molybdenum sheet 4 open reeded one side with
The chip 3 contacts；Wherein, upper molybdenum sheet 2 and lower molybdenum sheet 4 are used as stress buffer area, can make 3 stress distribution of semiconductor chip more
Uniformly, it shields；Silver-colored gasket 5 is used to mismachining tolerance between compensation component.
The contact temperature-measuring element 10, is placed in the groove, and the gap between groove is filled up by heat-conducting silicone grease 11,
Detection range is 0~200 DEG C；The gap that 10 output end of contact temperature-measuring element passes through subelement frame 7 leads to pcb board 8,
Driving circuit or signal processing circuit are disposed on pcb board 8, for handling the data collected of contact temperature-measuring element 10,
The data are drawn after pcb board 8 by lead 14.
Electrode flange 12 and ceramic cartridge 13 are the contact temperature-measuring of the crimp type semiconductor device inside Temperature Distribution
System provides sealed environment, makes device from outside contamination.
When assembling the system, first subelement frame 7 is set and on boss 6, is then sequentially placed silver-colored gasket 5,4 and of lower molybdenum sheet
Contact temperature-measuring element 10, chip 3 and upper molybdenum sheet 2 after each sub- module group assembling, are placed above molybdenum sheet 2 in each submodule group
Collector 1 is forced together each component by exerting pressure outside.
Fig. 3 is molybdenum in the contact temperature-measuring system of the utility model embodiment crimp type semiconductor device inside Temperature Distribution
Chip architecture schematic diagram, (a), (b), (c) are respectively the front view, side view and top view of molybdenum sheet；As shown in figure 3, molybdenum sheet structure
On be provided with groove, size involved by groove has flute length L, groove width W, groove depth H and groove center and molybdenum sheet center line distance D, groove ruler
Very little value is selected with reference to temperature element actual size, and groove size should be slightly bigger than the size of contact temperature-measuring element 10, with
It is large enough to hold temperature element, and guarantees that it not will receive the influence of stress under various operating conditions.
Preferably, can use flute length L is 6~18mm, and groove width W is 0.4~2mm, and groove depth H is 0.4~2mm, groove center and molybdenum
Piece center line distance D value in 0 to molybdenum sheet size range.
In each submodule group, molybdenum sheet structure is arranged in around chip, and molybdenum sheet opens up reeded one side and contacts with chip, just
Junction temperature measurement is carried out in arrangement contact temperature-measuring element.
Preferably, the layout direction of groove will guarantee as far as possible the symmetry of device entirety, and reduce each submodule group and open up
The influence that groove is distributed each chip temperature, so the angle for opening up groove in the utility model meets the long side and molybdenum sheet of groove
Any side it is parallel or be in 45 degree.
Compared with the immediate prior art, the beneficial effects of the utility model are:
1. cannot still apply contact measurement method in existing crimp type semiconductor devices junction temperature measurement technology.This is practical new
The technical solution that type provides is by reasonable reformation device architecture, so that contact measurement method is in the measurement of crimp type device junction temperature
It can be applied；Since device is crimp type semiconductor, compared with directly contact temperature-measuring element is crimped on around chip,
Groove structure is opened up on molybdenum sheet, and the contact temperature-measuring element is placed in groove and is connected with chip, is connect to eliminate
Stress between touch temperature element and chip.
2. existing crimp type semiconductor devices junction temperature measurement technology uses temperature-sensitive electrical parameter method, it is average to be only capable of measuring each chip
Junction temperature cannot obtain each junction temperature of chip distribution.Technical solution provided by the utility model in each chip layout contact by surveying
Warm structure can obtain each junction temperature of chip distribution situation under any operating condition.
3. only design is optimized to molybdenum sheet in technical solution provided by the utility model, transformation part is few, and replacement is flexible,
, can also be in device design process convenient for scientific research, pre- embedded temperature element is for monitoring on-line.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the method and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.In conclusion
The content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution, which is characterized in that including contact
Temperature element (10) and from top to bottom sequentially connected collector (1), submodule group, pcb board (8) and emitter (9)；
The submodule group successively includes upper molybdenum sheet (2), chip (3), lower molybdenum sheet (4) and silver-colored gasket (5) from top to bottom；The lower molybdenum
Piece (4) is provided with groove, and the lower molybdenum sheet (4) is opened reeded one side and contacted with the chip (3)；
The contact temperature-measuring element (10), is placed in the groove, contacts with the chip (3), and output end connects the PCB
Plate (8).
2. a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution according to claim 1,
It is characterized in that, further includes heat-conducting silicone grease (11), the sky for filling up between the contact temperature-measuring element (10) and the groove
Gap.
3. a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution according to claim 1,
It is characterized in that, the flute length of the groove is 6-18mm.
4. a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution according to claim 1,
It is characterized in that, the groove width of the groove is 0.4-2mm.
5. a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution according to claim 1,
It is characterized in that, the groove depth of the groove is 0.4-2mm.
6. a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution according to claim 1,
It is characterized in that, the long side of the groove is parallel with any side of the upper molybdenum sheet or lower molybdenum sheet.
7. a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution according to claim 1,
It is characterized in that, the long side of the groove is in 45 degree with any side of the upper molybdenum sheet or lower molybdenum sheet.
8. a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution according to claim 1,
It is characterized in that, the contact temperature-measuring element (10) is thermocouple.
9. a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution according to claim 1,
It is characterized in that, the contact temperature-measuring element (10) is temperature-measuring optical fiber.
10. a kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution according to claim 1,
It is characterized in that, contact temperature-measuring element (10) temperature-measuring range is 0-200 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920369577.8U CN209372256U (en) | 2019-03-22 | 2019-03-22 | A kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution |
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| CN201920369577.8U CN209372256U (en) | 2019-03-22 | 2019-03-22 | A kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855752A (en) * | 2019-03-22 | 2019-06-07 | 华北电力大学 | A kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109855752A (en) * | 2019-03-22 | 2019-06-07 | 华北电力大学 | A kind of contact temperature-measuring system of crimp type semiconductor device inside Temperature Distribution |
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