CN111007423B - Communication test fixture of server power front and back level - Google Patents
Communication test fixture of server power front and back level Download PDFInfo
- Publication number
- CN111007423B CN111007423B CN201911332543.2A CN201911332543A CN111007423B CN 111007423 B CN111007423 B CN 111007423B CN 201911332543 A CN201911332543 A CN 201911332543A CN 111007423 B CN111007423 B CN 111007423B
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- card
- switching device
- communication
- thimble
- circuit board
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- 238000004891 communication Methods 0.000 title claims abstract description 90
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000003466 welding Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000003993 interaction Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000036039 immunity Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
Abstract
The invention discloses a communication test fixture for the front and rear stages of a server power supply, which comprises a signal switching device with a thimble and a fixing part arranged on a circuit board where a communication chip is arranged. When the front-stage and rear-stage communication signals of the power supply need to be detected, the signal switching device is fixed through the fixing part on the circuit board, so that the ejector pins on the signal switching device are in one-to-one contact with the pins of the communication chip, and the signals transmitted by the pins are led out for subsequent detection; when the front and rear communication signals of the power supply do not need to be detected, the signal switching device is taken down from the circuit board, so that the normal work of the circuit board is not influenced. Compare in the mode that the welding wire draws forth the signal, the mode security that the thimble of this application drawn forth the signal is higher, and does not receive the influence of communication chip's adjacent pin distance, and stability is higher.
Description
Technical Field
The invention relates to the field of signal testing, in particular to a communication testing jig for a front stage and a rear stage of a server power supply.
Background
At present, a server Power supply mostly adopts a topological structure of a PFC (Power Factor Correction) circuit and an LLC resonant circuit, specifically, the PFC circuit is used as a Power supply front stage, and the LLC resonant circuit is used as a Power supply rear stage. A BMC (Baseboard Management Controller) of the server needs to perform data interaction with a power supply of the server to obtain related information of the power supply or configure some parameters of the power supply.
In the prior art, the data interaction between the BMC and the power supply is realized by installing I on an LLC resonant circuit at the rear stage of the power supply2Realized by C interface, specifically, BMC and LLC resonant circuit passes through I2The C interface directly carries out data interaction, the BMC and the PFC circuit at the front stage of the power supply indirectly carry out data interaction through the LLC resonant circuit, and therefore data interaction is required between the PFC circuit and the LLC resonant circuit. However, the communication chip for communication between the PFC circuit and the LLC resonant circuit does not have a power supply front-rear communication port led out on the corresponding circuit board, and when a power supply front-rear communication signal needs to be detected, the power supply front-rear communication port is usually led out by a welding wire of the communication chip manually. However, the bonding wirePotential safety hazards can be caused to the power supply; moreover, the adjacent pins of the communication chip are close in distance, the difficulty of welding the wires is high, and short circuit and unstable welding are easy to occur.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a communication test fixture for the front and rear stages of a server power supply, which has higher safety, is not influenced by the distance between adjacent pins of a communication chip and has higher stability.
In order to solve the above technical problem, the present invention provides a communication test fixture for front and rear stages of a server power supply, including:
the signal switching device is provided with a thimble; the thimble is used for leading out a signal transmitted by the pin when the thimble is contacted with the pin of the communication chip;
the fixing part is arranged on the circuit board where the communication chip is located and used for fixing the signal switching device and is used for enabling the ejector pins to be in one-to-one contact with the pins after the signal switching device is fixed.
Preferably, the signal transfer device includes:
the clamping sleeve is provided with the thimble;
and the limiting device is used for fixing the clamping sleeve and is clamped and fixed with the fixing part.
Preferably, the fixing portion includes:
the via hole is arranged on the circuit board;
correspondingly, stop device includes:
a card; the card is provided with a clamping groove for inserting the clamping sleeve;
and the fixing column is fixed on the card and is used for being clamped with the via hole.
Preferably, the fixing column includes:
an elastic structural member;
the top end of the columnar body is arranged on the clamping sheet, and the bottom end of the columnar body is provided with the elastic structural part.
Preferably, the via hole includes:
the first through hole and the second through hole are positioned on the upper side and the lower side of the communication chip;
correspondingly, stop device includes:
a first card;
the first fixing column is fixed on the first card and used for being clamped with the first through hole;
a second card; the first card and the second card are provided with card slots for inserting the card sleeves;
and the second fixing column is fixed on the second card and used for being clamped with the second through hole.
Preferably, the ejector pin is a spring ejector pin.
Preferably, the communication test fixture further comprises:
and the anti-interference circuit is arranged on the signal switching device and is used for filtering interference signals in the signals led out by the ejector pin.
Preferably, the immunity circuit includes:
and the capacitor is connected between the TX signal line and the RX signal line of the communication chip led out from the thimble.
The invention provides a communication test fixture for the front and rear stages of a server power supply, which comprises a signal switching device with a thimble and a fixing part arranged on a circuit board where a communication chip is arranged. When the front-stage and rear-stage communication signals of the power supply need to be detected, the signal switching device is fixed through the fixing part on the circuit board, so that the ejector pins on the signal switching device are in one-to-one contact with the pins of the communication chip, and the signals transmitted by the pins are led out for subsequent detection; when the front and rear communication signals of the power supply do not need to be detected, the signal switching device is taken down from the circuit board, so that the normal work of the circuit board is not influenced. Compare in the mode that the welding wire draws forth the signal, the mode security that the thimble of this application drawn forth the signal is higher, and does not receive the influence of communication chip's adjacent pin distance, and stability is higher.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a communication test fixture at a front stage and a rear stage of a server power supply according to an embodiment of the present invention;
fig. 2 is a front view of a communication test fixture at a front stage and a rear stage of a server power supply according to an embodiment of the present invention;
fig. 3 is a top view of a communication test fixture at a front stage and a rear stage of a server power supply according to an embodiment of the present invention;
fig. 4 is a pin circuit diagram of a communication chip according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a via on a circuit board according to an embodiment of the present invention;
fig. 6 is a schematic diagram of capacitor placement according to an embodiment of the present invention.
Detailed Description
The core of the invention is to provide a communication test fixture for the front and rear stages of the server power supply, which has higher safety, is not influenced by the distance between adjacent pins of a communication chip and has higher stability.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural diagram of a communication test fixture for a front-back stage of a server power supply according to an embodiment of the present invention, fig. 2 is a front view of the communication test fixture for the front-back stage of the server power supply according to the embodiment of the present invention, and fig. 3 is a top view of the communication test fixture for the front-back stage of the server power supply according to the embodiment of the present invention.
This communication test fixture of level around server power includes:
the signal switching device is provided with a thimble 1; the thimble 1 is used for leading out a signal transmitted by a pin when the thimble is contacted with the pin of the communication chip;
the fixing part is arranged on the circuit board where the communication chip is located and used for fixing the signal switching device and is used for enabling the thimble 1 to be in one-to-one contact with the pins after the signal switching device is fixed.
Specifically, the communication test fixture of level around server power of this application includes signal switching device and locates the fixed part on communication chip place circuit board, and its theory of operation is:
when the front and rear communication signals of the power supply need to be detected, the signal switching device can be fixed on the circuit board through the fixing part on the circuit board. The signal switching device is provided with ejector pins 1, and after the signal switching device is fixed, the ejector pins 1 on the signal switching device are exactly abutted to pins of the communication chip one by one. Because the thimble 1 on the signal switching device is contacted with the pin on the communication chip one by one, the thimble 1 can draw the signal transmitted on the contacted pin out, namely the external detection equipment used for detecting the communication signal of the front and back levels of power can be connected with the thimble 1 on the switching device directly, in order to obtain the communication signal of the front and back levels of power that its needs through the thimble 1 on the signal switching device. When the front-stage and rear-stage communication signals of the power supply do not need to be detected, the signal switching device is taken down from the circuit board, only the additionally arranged fixing parts are additionally arranged on the circuit board, and the fixing parts are not related to the original circuit structure on the circuit board, so that the normal work of the circuit board is not influenced.
It should be noted that, in the present application, the target pins of the communication chips corresponding to the power supply front-back level communication signals need to be determined in advance according to the power supply front-back level communication signals required by the external detection device, so as to realize one-to-one contact between the ejector pins 1 and the target pins when the signal adapter is fixed on the circuit board when the position of the ejector pin 1 on the signal adapter is set.
Referring to fig. 4, fig. 4 is a pin circuit diagram of a communication chip according to an embodiment of the present invention (numbers in fig. 4 indicate pin numbers of the communication chip). If the signals transmitted by the pins 1, 4, 6, 8, 9, 11, 13, and 16 of the communication chip in fig. 4 need to be led out, 8 pins need to be arranged on the signal switching device, and when the signal switching device is fixed on the circuit board, the 8 pins are in one-to-one contact with the 8 pins that need to be led out.
The invention provides a communication test fixture for the front and rear stages of a server power supply, which comprises a signal switching device with a thimble and a fixing part arranged on a circuit board where a communication chip is arranged. When the front-stage and rear-stage communication signals of the power supply need to be detected, the signal switching device is fixed through the fixing part on the circuit board, so that the ejector pins on the signal switching device are in one-to-one contact with the pins of the communication chip, and the signals transmitted by the pins are led out for subsequent detection; when the front and rear communication signals of the power supply do not need to be detected, the signal switching device is taken down from the circuit board, so that the normal work of the circuit board is not influenced. Compare in the mode that the welding wire draws forth the signal, the mode security that the thimble of this application drawn forth the signal is higher, and does not receive the influence of communication chip's adjacent pin distance, and stability is higher.
On the basis of the above-described embodiment:
as an alternative embodiment, the signal transfer device includes:
a cutting sleeve 2 provided with a thimble 1;
and the limiting device is used for fixing the clamping sleeve 2 and is clamped and fixed with the fixing part.
Specifically, the signal switching device of this application includes cutting ferrule 2 and stop device, and its theory of operation is:
when the front-stage and rear-stage communication signals of the power supply need to be detected, the limiting device is clamped and fixed with the fixing part on the circuit board, and the clamping sleeve 2 provided with the ejector pin 1 is fixed on the limiting device, so that the clamping sleeve 2 is fixed above the communication chip by the limiting device, and the ejector pin 1 on the clamping sleeve 2 is in one-to-one contact with pins on the communication chip. When the front and rear level communication signals of the power supply do not need to be detected, the clamping sleeve 2 is taken down from the limiting device, and the limiting device is taken down from the circuit board.
As an alternative embodiment, the fixing portion comprises:
a via hole provided on the circuit board;
correspondingly, stop device includes:
a card 3; the card 3 is provided with a clamping groove for inserting the clamping sleeve 2;
fixed column fixed in on the card 3, be used for with the via hole joint.
Specifically, fixed part on the circuit board of this application is via hole for locating on the circuit board, and stop device includes card 3 and fixed column, and its theory of operation is:
when the communication signal of level need examine around the power, with the via hole joint on fixed column and the circuit board, the purpose is fixed the card 3 on the circuit board, and is equipped with the draw-in groove that is used for grafting cutting ferrule 2 on the card 3 to fix cutting ferrule 2 on card 3, the purpose is fixed in the top of communication chip with cutting ferrule 2 by card 3, realizes thimble 1 on the cutting ferrule 2 and the pin contact one by one on the communication chip. When the communication signal of level need not detect around the power, take off cutting ferrule 2 from card 3, and borrow by the fixed column with 3 follow circuit boards take off of card, the holistic occupation space of signal switching device can be reduced to a great extent to this kind of card formula fixed design.
As an alternative embodiment, the fixing post includes:
an elastic structural member 4;
the top end is arranged on the card 3, and the bottom end is provided with a columnar body 5 of an elastic structural part 4.
Specifically, the fixed column of this application includes elastic construction 4 and column body 5, and its theory of operation is:
when the front-stage and rear-stage communication signals of the power supply need to be detected, the fixing column penetrates through the through hole in the circuit board from the front side of the circuit board, the columnar body 5 of the fixing column is just clamped at the through hole, and the structure can be compressed to smoothly penetrate through the through hole when the elastic structural member 4 at the bottom end of the columnar body 5 penetrates through the through hole; when the via has been passed, the structure may spring back to the original configuration, at which point the resilient structure 4 snaps over the back of the circuit board, thereby stabilizing the card 3 on the circuit board. When the front and rear level communication signals of the power supply do not need to be detected, the fixing column is taken down from the circuit board.
More specifically, the elastic structural member 4 of the present application may be an inverted triangular-shaped elastic structural member.
Referring to fig. 5, fig. 5 is a schematic diagram of a via on a circuit board according to an embodiment of the present invention.
As an alternative embodiment, the via comprises:
the first via hole 11 and the second via hole 12 are positioned at the upper side and the lower side of the communication chip;
correspondingly, stop device includes:
a first card;
the first fixing column is fixed on the first card and used for being clamped with the first through hole 11;
a second card; the first card and the second card are provided with clamping grooves for inserting the clamping sleeves 2;
and the second fixing column is fixed on the second card and is used for being clamped with the second through hole 12.
Specifically, the circuit board of the present application is provided with two via holes as fixing portions, which are referred to as a first via hole 11 and a second via hole 12, and the two via holes are located at the upper and lower sides of the communication chip, respectively, as shown in fig. 5. Correspondingly, the limiting device comprises a structure of two cards and fixing columns, namely a first card, a first fixing column, a second card and a second fixing column, and the first fixing column is clamped with the first through hole 11 on the circuit board so as to fix the first card on the circuit board; and clamping the second fixing column with a second through hole 12 on the circuit board so as to fix the second card on the circuit board. The first card and the second card are provided with clamping grooves for inserting the card sleeve 2, so that the card sleeve 2 is fixed on the two cards.
As an alternative embodiment, the thimble 1 is embodied as a pogo-thimble.
Specifically, thimble 1 of this application specifically is the spring thimble, realizes that thimble 1 length is scalable to make thimble 1 can better push up in communication chip's pin position, guarantee that the signal draws forth.
As an optional embodiment, the communication test fixture further includes:
and the anti-interference circuit 6 is arranged on the signal switching device and is used for filtering interference signals in the signals led out by the thimble 1.
Further, the communication test fixture of this application still includes anti jamming circuit 6, and its theory of operation is:
on the signal switching device was located to anti-jamming circuit 6, specifically established on cutting ferrule 2 to the signal line that 2 upper portion thimbles of connecting cutting ferrule 1 were drawn forth, the interference signal in the signal that the purpose was drawn forth to the filtering thimble 1, thereby make more stable accurate power front and back level communication signal get into external detection equipment, and then improved and detected the accuracy.
As an alternative embodiment, the immunity circuit 6 includes:
and the capacitor is connected between a TX signal line and an RX signal line of the communication chip led out from the thimble 1.
Specifically, the anti-interference circuit 6 of the present application may select a capacitor, and the capacitor is specifically connected between a TX (transmission) signal line and an RX (reception) signal line of a communication chip led out from the thimble 1, as shown in fig. 6, a capacitor of about 50pf may be specifically added to increase the anti-interference performance of the signal.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a communication test fixture of level around server power which characterized in that includes:
the signal switching device is provided with a thimble; the thimble is used for leading out a signal transmitted by the pin when the thimble is contacted with the pin of the communication chip;
the fixing part is arranged on the circuit board where the communication chip is arranged and used for fixing the signal switching device and is used for enabling the ejector pins to be in one-to-one contact with the pins after the signal switching device is fixed;
wherein, the signal switching device includes:
the clamping sleeve is provided with the thimble;
the limiting device is used for fixing the clamping sleeve and is fixedly clamped with the fixing part;
wherein, the fixed part includes:
the via hole is arranged on the circuit board;
correspondingly, stop device includes:
a card; the card is provided with a clamping groove for inserting the clamping sleeve;
and the fixing column is fixed on the card and is used for being clamped with the via hole.
2. The communication test fixture of the front and rear stages of the server power supply of claim 1, wherein the fixing column comprises:
an elastic structural member;
the top end of the columnar body is arranged on the clamping sheet, and the bottom end of the columnar body is provided with the elastic structural part.
3. The server power front-rear stage communication test fixture of claim 1, wherein the via hole comprises:
the first through hole and the second through hole are positioned on the upper side and the lower side of the communication chip;
correspondingly, stop device includes:
a first card;
the first fixing column is fixed on the first card and used for being clamped with the first through hole;
a second card; the first card and the second card are provided with card slots for inserting the card sleeves;
and the second fixing column is fixed on the second card and used for being clamped with the second through hole.
4. The tool of claim 1, wherein the pin is a pogo pin.
5. The communication test fixture for the front and rear stages of the server power supply of any one of claims 1-4, wherein the communication test fixture further comprises:
and the anti-interference circuit is arranged on the signal switching device and is used for filtering interference signals in the signals led out by the ejector pin.
6. The communication test fixture of the front and rear stages of the server power supply of claim 5, wherein the anti-jamming circuit comprises:
and the capacitor is connected between the TX signal line and the RX signal line of the communication chip led out from the thimble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911332543.2A CN111007423B (en) | 2019-12-22 | 2019-12-22 | Communication test fixture of server power front and back level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911332543.2A CN111007423B (en) | 2019-12-22 | 2019-12-22 | Communication test fixture of server power front and back level |
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| Publication Number | Publication Date |
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| CN111007423A CN111007423A (en) | 2020-04-14 |
| CN111007423B true CN111007423B (en) | 2022-04-22 |
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| CN201911332543.2A Active CN111007423B (en) | 2019-12-22 | 2019-12-22 | Communication test fixture of server power front and back level |
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