CN219676198U - Test machine - Google Patents
Test machine Download PDFInfo
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- CN219676198U CN219676198U CN202320897102.2U CN202320897102U CN219676198U CN 219676198 U CN219676198 U CN 219676198U CN 202320897102 U CN202320897102 U CN 202320897102U CN 219676198 U CN219676198 U CN 219676198U
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- circuit board
- expansion interface
- interface circuit
- channel expansion
- connector
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 239000000178 monomer Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 239000011295 pitch Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Mounting Of Printed Circuit Boards And The Like (AREA)
Abstract
The utility model relates to a testing machine, which comprises a main control backboard and at least one plug-in card, wherein the plug-in card comprises a driving circuit board and at least two channel expansion interface circuit boards, the driving circuit board is provided with a first edge, the first edge is configured to be plugged on the main control backboard, the edge which is not adjacent to the first edge is a second edge, and the at least two channel expansion interface circuit boards are arranged on the second edge of the driving circuit board along the thickness direction of the driving circuit board; the second side of the drive circuit board is provided with a first connector, one side of the channel expansion interface circuit board facing the first connector is provided with a second connector, and the first connector is connected with the second connector. The utility model adopts a plurality of test channels to share the same driving and measuring circuit, and realizes the logic control of all the test channels through a main control logic circuit, thus being capable of remarkably reducing the volume of the tester, having compact structure, being convenient for installation and maintenance, realizing the optimal combination of low cost and high efficiency, and being especially suitable for occasions with more test channels.
Description
Technical Field
The utility model relates to the technical field of semiconductor chip testing, in particular to a testing machine.
Background
Automatic test equipment for chips generally requires a large number of test channels to be externally connected, and typically test channels with the same functions and specifications. In the prior art, for a dedicated open-circuit and short-circuit chip tester, each test channel is equipped with an independent test circuit, and the test circuit of each test channel can be roughly divided into three links: the logic control circuit, the driving and measuring circuit, the signal connector and the on-off switch circuit can cause the problems of huge volume, larger number of test channels, inconvenient installation and maintenance and the like of the testing machine, and especially when the number of the test channels is large, the defects of the testing machine in the prior art are more serious, the requirements of high density and compact structure of the test channels cannot be met, and the balance between the number of the test channels and the cost control cannot be achieved.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to overcome the technical defects in the prior art, and provide a testing machine which adopts at least two channel expansion interface circuit boards to connect with the same driving circuit board, so that a plurality of testing channels share the same driving and measuring circuit, adopts a main control backboard to connect with at least one plug-in card, and realizes the logic control of all the testing channels through a main control logic circuit, thus the volume of the testing machine can be obviously reduced, the structure is compact, the installation and the maintenance are convenient, and the optimal combination of low cost and high efficiency is realized, and the testing machine is especially suitable for occasions with more testing channels.
In order to solve the above technical problems, the present utility model provides a testing machine, including:
a master control backboard integrated with a master control logic circuit;
each card comprises a drive circuit board and at least two channel expansion interface circuit boards, wherein the drive circuit board is provided with a first edge, the first edge is configured to be inserted on the main control backboard, the edge which is not adjacent to the first edge is a second edge, and the at least two channel expansion interface circuit boards are arranged on the second edge of the drive circuit board along the thickness direction of the drive circuit board so as to form a multi-layer channel expansion interface circuit board structure;
the second side of the driving circuit board is provided with a first connector, one side of the channel expansion interface circuit board, which faces the first connector, is provided with a second connector, and the first connector is connected with the second connector.
In one embodiment of the present utility model, at least one slot is provided on the main control back board, and the driving circuit board of each card is inserted into the slot.
In one embodiment of the present utility model, one of the at least two channel expansion interface circuit boards is connected to the second side of the driving circuit board, and two adjacent channel expansion interface circuit boards are connected in pairs, and along the stacking direction of the multi-layer channel expansion interface circuit boards, one of the two adjacent channel expansion interface circuit boards is arranged to avoid the second connector on the other channel expansion interface circuit board, so that the second connectors on all the channel expansion interface circuit boards are exposed.
In one embodiment of the present utility model, a plurality of first mounting holes are formed along a first direction of the driving circuit board, a plurality of second mounting holes are formed on each of the channel expansion interface circuit boards, and a plurality of second mounting holes are formed at intervals along a second direction of the channel expansion interface circuit board, wherein the first direction is perpendicular to a thickness direction of the driving circuit board, and the second direction is perpendicular to the first direction.
In one embodiment of the present utility model, the second mounting hole on the outer side of one of the at least two channel expansion interface circuit boards is connected to the first mounting hole on the driving circuit board, and the second mounting hole on the inner side is connected to the second mounting hole on the outer side of the adjacent channel expansion interface circuit board.
In one embodiment of the present utility model, the channel expansion interface circuit board includes at least two units, and the at least two units are disposed on the second side of the driving circuit board in parallel along a first direction of the driving circuit board, where the first direction is perpendicular to a thickness direction of the driving circuit board.
In one embodiment of the present utility model, the number of the channel expansion interface circuit boards is two, wherein one channel expansion interface circuit board is connected with the other channel expansion interface circuit board, and one channel expansion interface circuit board is connected with the second side of the driving circuit board, wherein the channel expansion interface circuit board which is not connected with the driving circuit board is arranged to avoid the second connector on the channel expansion interface circuit board connected with the driving circuit board.
In one embodiment of the present utility model, the first connector includes a first connector unit b, where the first connector unit b is a double-row in-line pin with straight pins, and the second connector on the channel expansion interface circuit board that is not connected to the driving circuit board is connected to the double-row in-line pin with straight pins, and the double-row in-line pin with straight pins is disposed at an edge of the driving circuit board.
In one embodiment of the present utility model, the first connector includes a first connector unit a, the first connector unit a is a double-row in-line pin with 90 degrees bent pins, a second connector on a channel expansion interface circuit board connected with the driving circuit board is connected with the double-row in-line pin with 90 degrees bent pins, and the double-row in-line pin with 90 degrees bent pins is disposed inside the driving circuit board.
In one embodiment of the utility model, a connecting portion is arranged at one end of each channel expansion interface circuit board, which is away from the driving circuit board.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
the utility model relates to a testing machine, which adopts at least two channel expansion interface circuit boards to connect with the same driving circuit board, so that a plurality of testing channels share the same driving and measuring circuit, adopts a main control backboard to connect with at least one plug-in card, and realizes the logic control of all the testing channels through a main control logic circuit, thus being capable of remarkably reducing the volume of the testing machine, having compact structure and convenient installation and maintenance, realizing the optimal combination of low cost and high efficiency, and being especially suitable for occasions with more testing channels.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
Fig. 1 is a schematic block diagram of a testing machine according to an embodiment of the present utility model.
Fig. 2 is a schematic block diagram of a preferred embodiment of a testing machine according to an embodiment of the present utility model.
Fig. 3 is an assembly schematic diagram of a preferred embodiment of a testing machine according to an embodiment of the present utility model.
Fig. 4 is a schematic structural diagram of a driving circuit board according to an embodiment of the utility model.
Fig. 5 is a schematic structural diagram of a channel expansion interface circuit board according to an embodiment of the present utility model.
Fig. 6 is an assembly schematic diagram of the card insertion and attachment baffle and the pull-out aid according to an embodiment of the present utility model.
The reference numerals in the figures illustrate: 10. a main control backboard; 11. a slot; 21. a driving circuit board; 211. a first connector unit a; 212. a first connector unit b; 213. a third connector; 214. a first mounting hole; 22. a channel expansion interface circuit board; 221. a channel expansion interface circuit board a; 222. a channel expansion interface circuit board b; 223. a second connector; 224. a second mounting hole; 225. a connection part; 30. a baffle; 40. a pulling aid.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
As shown in fig. 1, an embodiment of the present utility model provides a testing machine, which includes a main control backboard 10 and at least one card, wherein the main control backboard 10 is integrated with a main control logic circuit; each card comprises a driving circuit board 21 and at least two channel expansion interface circuit boards 22, wherein the driving circuit board 21 is provided with a first edge, the first edge is configured to be plugged on the main control backboard 10, the edge which is not adjacent to the first edge is a second edge, and the at least two channel expansion interface circuit boards 22 are arranged on the second edge of the driving circuit board 21 along the thickness direction of the driving circuit board 21 so as to form a multi-layer channel expansion interface circuit board 22 structure; wherein, the second side of the driving circuit board 21 is provided with a first connector, and the side of the channel expansion interface circuit board 22 facing the first connector is provided with a second connector 223, and the first connector is connected with the second connector 223.
The utility model relates to a testing machine, which adopts at least two channel expansion interface circuit boards 22 to connect with the same driving circuit board 21, so that a plurality of testing channels share the same driving and measuring circuit, adopts a main control backboard 10 to connect with at least one plug-in card, and realizes the logic control of all the testing channels through a main control logic circuit, thus the volume of the testing machine can be obviously reduced, the structure is compact, the installation and the maintenance are convenient, the optimal combination of low cost and high efficiency is realized, and the utility model is especially suitable for occasions with more testing pins.
As an example, as shown in fig. 2, the main circuit part of the tester includes a main control back plate 10 and 8 test channel cards, each of which includes a driving circuit board 21 and a channel expansion interface circuit board 22. The main control and logic circuits of the tester are concentrated on the main control backboard 10, the driving and measuring circuits of the testing channels of the tester are concentrated on the driving circuit board 21 of the plug-in card, and the on-off switch array and the connector circuits of the testing channels of the tester are positioned on the channel expansion interface circuit board 22 of the plug-in card. The driving circuit board 21 is connected to the main control back board 10, and the channel expansion interface circuit board 22 is connected to the driving circuit board 21, and the assembly effect is shown in fig. 3.
In each test channel card, one of the at least two channel expansion interface circuit boards 22 is connected to the second side of the driving circuit board 21, and two adjacent channel expansion interface circuit boards 22 are connected in pairs, and along the stacking direction of the multi-layer channel expansion interface circuit boards 22, one of the adjacent two channel expansion interface circuit boards 22 is arranged to avoid the second connector 223 on the other channel expansion interface circuit board 22, so that the second connectors 223 on all the channel expansion interface circuit boards 22 are exposed. Considering that the shared circuit cannot serve multiple test channels simultaneously, moderate sharing may be selected in order to compromise parallelism performance of the tester. As a preferred embodiment, two channel expansion interface circuit boards 22 are disposed on the second side of the driving circuit board 21 along the thickness direction of the driving circuit board 21 to form a double-layer channel expansion interface circuit board 22 structure, one channel expansion interface circuit board 22 of the two channel expansion interface circuit boards 22 is connected with the other channel expansion interface circuit board 22, and one channel expansion interface circuit board 22 is connected with the second side of the driving circuit board 21, wherein the channel expansion interface circuit board 22 which is not connected with the driving circuit board 21 is disposed avoiding the second connector 223 on the channel expansion interface circuit board 22 which is connected with the driving circuit board 21.
Each of the channel expansion interface circuit boards 22 includes at least two units, and the at least two units are arranged on the second side of the driving circuit board 21 in parallel along a first direction of the driving circuit board 21, where the first direction is perpendicular to a thickness direction of the driving circuit board 21. Preferably, each channel expansion interface circuit board 22 comprises two single bodies, the width of the channel expansion interface circuit board 22 is 50mm, and the width of the driving circuit board 21 is 100mm.
As an example, referring to fig. 3, the two channel expansion interface circuit boards 22 are a channel expansion interface circuit board a221 and a channel expansion interface circuit board b222, where the channel expansion interface circuit board a221 is connected to the second side of the driving circuit board 21, the channel expansion interface circuit board b222 is connected to the channel expansion interface circuit board a221, and the channel expansion interface circuit board b222 and the channel expansion interface circuit board a221 are arranged in parallel along the stacking direction of the two-layer channel expansion interface circuit boards 22, and may be connected by a copper pillar. And the channel expansion interface circuit board b222 is arranged avoiding the second connector 223 on the channel expansion interface circuit board a221, that is, the channel expansion interface circuit board a221 and the channel expansion interface circuit board b222 are arranged in a staggered manner, so as to avoid the second connector 223 on the channel expansion interface circuit board a221, thereby avoiding the spatial interference of the second connectors 223 of the channel expansion interface circuit board b222 and the channel expansion interface circuit board a 221.
Further, in order to reduce the volume of the testing machine as much as possible, the channel expansion interface circuit board 22 which is not connected to the driving circuit board 21 is preferably located on the same plane as the driving circuit board 21, that is, the channel expansion interface circuit board b222 is located on the same plane as the driving circuit board 21, so that the structure is more compact; and the channel expansion interface circuit board b222 and the driving circuit board 21 are designed on the same plane, so that the second connector 223 on the channel expansion interface circuit board b222 is conveniently connected with the first connector on the driving circuit board 21, for example, a double-row in-line pin with straight pins can be adopted.
Continuing the above example, consider that a first connector on the drive circuit board 21 needs to be connected with a second connector 223 on the two channel expansion interface circuit boards 22, respectively. The channel expansion interface circuit board 22 thus uses a double row in-line bus as the inter-board signal connector. As an example, the first connector includes a first connector unit b212, where the first connector unit b212 is a double-row in-line pin with straight pins, the second connector 223 on the channel expansion interface circuit board b222 is connected with the double-row in-line pin with straight pins, and the double-row in-line pin with straight pins is used as a board edge connector in a non-conventional installation manner, and two rows of pins span the board edge and are soldered with the surface-mounted pads on the front and back sides of the circuit board; and the first connector further comprises a first connector unit a211, wherein the first connector unit a211 is a double-row in-line pin with 90-degree bent pins, the second connector 223 on the channel expansion interface circuit board a221 is connected with the double-row in-line pin with 90-degree bent pins, and the double-row in-line pin with 90-degree bent pins is arranged inside the driving circuit board 21 in a conventional welding mode.
In connection with the above example, a third connector 213 is disposed on a side of the driving circuit board 21 facing the main control back board 10, and the driving circuit board 21 is connected to the main control back board 10 through the third connector 213.
Continuing with the above example, in order to achieve the assembly of the channel expansion interface circuit board a221 and the driving circuit board 21, and the assembly of the channel expansion interface circuit board b222 and the channel expansion interface circuit board a 221. Along the first direction of the driving circuit board 21, a plurality of first mounting holes 214 are disposed on the second side of the driving circuit board 21, a plurality of second mounting holes 224 are disposed on the channel expansion interface circuit board b222 and the channel expansion interface circuit board a221, and the plurality of second mounting holes 224 are disposed at intervals along the second direction of the channel expansion interface circuit board 22, wherein the first direction is perpendicular to the thickness direction of the driving circuit board 21, and the second direction is perpendicular to the first direction. Specifically, 4 first mounting holes H1 to H4 may be designed on the driving circuit board 21, the layout of which is shown in fig. 3; 8 second mounting holes H1-H8 are designed on a single body of each channel expansion interface circuit board 22, and the layout is shown in FIG. 4. The pitches of the second mounting holes H1 to H3, H2 to H4, H5 to H7 and H6 to H8 are L1; the second mounting holes H1 to H2 are spaced apart by L2, and the first mounting holes H1 to H2 and H3 to H4 are spaced apart by L2. Where the pitch L1 determines the offset width of the offset mounting of the two channel expansion interface circuit boards 22.
In actual assembly, the first mounting holes H1 and H2 on the driving circuit board 21 are respectively connected with the second mounting holes H1 and H2 on one of the monomers in the channel expansion interface circuit board a221, and the first mounting holes H3 and H4 on the driving circuit board 21 are respectively connected with the second mounting holes H1 and H2 on the other monomer in the channel expansion interface circuit board a221, thereby completing the relative fixation of the two monomers in the driving circuit board 21 and the channel expansion interface circuit board a 221. The second mounting holes H3, H4, H7, H8 on the two monomers in the channel expansion interface circuit board b222 are respectively connected with the second mounting holes H1, H2, H5, H6 on the two monomers in the channel expansion interface circuit board a221, so that the assembly of the channel expansion interface circuit board a221 and the driving circuit board 21 and the relative fixation of the channel expansion interface circuit board b222 and the channel expansion interface circuit board a221 are realized.
Further, as shown in fig. 5, the second mounting hole H7 on one of the monomers and the second mounting hole H8 on the other monomer in the channel expansion interface circuit board b222 are used for mounting the blocking piece 30, and a stable structure of the whole card can be realized after the assembly is completed.
Continuing the above example, the main control back plate 10 is provided with at least one slot 11, and the driving circuit board 21 of each card is inserted into the slot 11. Preferably, the size of the main control back plate 10 of the testing machine and the layout of the slots 11 thereof are designed to be matched with a PXI chassis, specifically, 8 slots 11 are arranged in parallel, and the space is 0.8 inch (20.32 mm). The card of the tester is designed according to the card dimension of 3U height of PXI standard, specifically, the width of the card is 100mm. The plug-in card output end adopts PXI 3U standard piece to be provided with separation blade 30 and helping and pull out ware 40, has guaranteed low cost. After the plug-in card is additionally provided with the baffle 30, the total thickness is 20mm as shown in fig. 6, so that the universality of a plurality of mechanism parts is ensured, and the low cost is realized.
Furthermore, based on the structural design of the PXI standard, the main control backboard 10 connector and the plug-in card connector can be changed, the main control backboard 10 connector does not use the backboard connector of the PXI standard, and the model is changed to be the NDK wild socket with the distance of 2.54mm and 44pin. The card connector was changed to a gold finger 2.54mm pitch, 44pin, without using a board connector of PXI specification.
Continuing the example above, the channel expansion interface circuit board 22 uses FFC0.5mm-68pin connectors to achieve high density output connections for up to 64 test channels. Because the output end of the plug-in card is provided with the baffle 30 and the pull-out aid 40, the output end of the test channel connector of the channel expansion interface circuit board 22 is provided with the connecting part 225, and the connecting part 225 is preferably in an asymmetric L shape as shown in fig. 4, so that the installation space of the FFC68pin connector can be met, and the installation space of the pull-out aid 40 is also yielded.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. A test machine, characterized in that: comprising the following steps:
a master control backboard integrated with a master control logic circuit;
each card comprises a drive circuit board and at least two channel expansion interface circuit boards, wherein the drive circuit board is provided with a first edge, the first edge is configured to be inserted on the main control backboard, the edge which is not adjacent to the first edge is a second edge, and the at least two channel expansion interface circuit boards are arranged on the second edge of the drive circuit board along the thickness direction of the drive circuit board so as to form a multi-layer channel expansion interface circuit board structure;
the second side of the driving circuit board is provided with a first connector, one side of the channel expansion interface circuit board, which faces the first connector, is provided with a second connector, and the first connector is connected with the second connector.
2. A testing machine according to claim 1, wherein: the main control backboard is provided with at least one slot, and the driving circuit board of each card is inserted into the slot.
3. A testing machine according to claim 1 or 2, wherein: one of the at least two channel expansion interface circuit boards is connected with the second side of the driving circuit board, and in the rest of the channel expansion interface circuit boards, two adjacent channel expansion interface circuit boards are connected in pairs, and one of the two adjacent channel expansion interface circuit boards is arranged to avoid a second connector on the other channel expansion interface circuit board along the stacking direction of the multi-layer channel expansion interface circuit boards, so that the second connectors on all the channel expansion interface circuit boards are exposed.
4. A testing machine according to claim 3, wherein: along the first direction of drive circuit board, the second limit of drive circuit board is provided with a plurality of first mounting holes, every be provided with a plurality of second mounting holes on the passageway extension interface circuit board, a plurality of second mounting holes are along the second direction interval setting of passageway extension interface circuit board, wherein first direction with the thickness of drive circuit board is put the direction vertically, the second direction with first direction is perpendicular.
5. A testing machine according to claim 4, wherein: the second mounting holes on the outer side of one of the at least two channel expansion interface circuit boards are connected with the first mounting holes on the driving circuit board, and the second mounting holes on the inner side are connected with the second mounting holes on the outer side of the adjacent channel expansion interface circuit board.
6. A testing machine according to claim 1 or 2, wherein: the channel expansion interface circuit board comprises at least two monomers, the at least two monomers are arranged on the second side of the driving circuit board in parallel along the first direction of the driving circuit board, and the first direction is perpendicular to the thickness direction of the driving circuit board.
7. A testing machine according to claim 3, wherein: the number of the channel expansion interface circuit boards is two, one channel expansion interface circuit board is connected with the other channel expansion interface circuit board, and one channel expansion interface circuit board is connected with the second side of the driving circuit board, wherein the channel expansion interface circuit board which is not connected with the driving circuit board is arranged to avoid a second connector on the channel expansion interface circuit board which is connected with the driving circuit board.
8. A testing machine according to claim 7, wherein: the first connector comprises a first connector unit b, the first connector unit b is a double-row straight pin, a second connector on the channel expansion interface circuit board which is not connected with the driving circuit board is connected with the double-row straight pin of the straight pin, and the double-row straight pin of the straight pin is arranged at the edge of the driving circuit board.
9. A testing machine according to claim 7, wherein: the first connector comprises a first connector unit a, wherein the first connector unit a is a double-row straight pin with 90-degree bent pins, a second connector on a channel expansion interface circuit board connected with the driving circuit board is connected with the double-row straight pin with 90-degree bent pins, and the double-row straight pin with 90-degree bent pins is arranged in the driving circuit board.
10. A testing machine according to claim 1 or 2, wherein: and one end of each channel expansion interface circuit board, which is away from the driving circuit board, is provided with a connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320897102.2U CN219676198U (en) | 2023-04-20 | 2023-04-20 | Test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320897102.2U CN219676198U (en) | 2023-04-20 | 2023-04-20 | Test machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219676198U true CN219676198U (en) | 2023-09-12 |
Family
ID=87925421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320897102.2U Active CN219676198U (en) | 2023-04-20 | 2023-04-20 | Test machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219676198U (en) |
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2023
- 2023-04-20 CN CN202320897102.2U patent/CN219676198U/en active Active
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