CN101135986A - Interface power consumption test card - Google Patents
Interface power consumption test card Download PDFInfo
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- CN101135986A CN101135986A CNA200610062441XA CN200610062441A CN101135986A CN 101135986 A CN101135986 A CN 101135986A CN A200610062441X A CNA200610062441X A CN A200610062441XA CN 200610062441 A CN200610062441 A CN 200610062441A CN 101135986 A CN101135986 A CN 101135986A
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- resistance
- voltage stabilizer
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Abstract
The invention comprises: a PCB fitting the relevant interface specifications and a load simulation device comprising a voltage stabilizer used for tuning the output voltage and a load unit used for receiving the output voltage and consuming the power. It can be used for testing the maximum required power of interface awaiting test by using said load simulation device.
Description
Technical field
The present invention relates to a kind of test card, particularly a kind of interface power consumption test card.
Background technology
In the R﹠D process of electronic system, reliability test is the important outpost of the tax office of guaranteeing product quality, and wherein one promptly is the power full load test of system interface.Be the example explanation with PCI Express interface below.
PCI Express is the bus interface of a new generation.Intel company proposed and will be connected with the technology replacement pci bus of a new generation and the inside of various chips in calendar year 2001, and was referred to as third generation I/O bussing technique.At the bottom of calendar year 2001, comprising that the leading company of more than 20 tame industries of Intel, AMD, DELL, IBM begins to draft the standard of new technology, and finished in 2002 subsequently, is PCIExpress to its definite designation.
PCI Express has adopted at present popular in the industry point-to-point connected in series, shared parallel architecture compared with PCI and more early stage computer bus, each equipment all has the special use of oneself to connect, do not need to whole bus request bandwidth, and can bring up to a very high frequency to data transmission rate, reach PCI the high bandwidth that can not provide.Can only realize one-way transmission with respect to traditional PCI bus in the single time cycle, two single worker of PCI Express connects the transfer rate and the quality that can provide higher.
The interface of PCI Express is different and difference to some extent comprises X1, X4, X8 and X16 (the X2 pattern will be used for internal interface but not the slot pattern) according to the bus bit wide.Short PCI Express card can insert in the long PCI Express slot and use.PCI Express interface can be supported hot-swappable.Three kinds of voltages of PCI Express card support are respectively+3.3V, 3.3Vaux (accessory power supply) and+12V.The PCI Express interface bit wide that is used to replace the AGP interface is X16, and the bandwidth of 5GB/s can be provided, even if the loss on the coding is arranged but still the actual bandwidth that is about about 4GB/s can be provided, considerably beyond the bandwidth of the 2.1GB/s of AGP X8.PCI Express not only can be used for being connected of south bridge and other equipment, also can extend to the connection between chipset, even also can be used to connect graphic chips.The I/O system of whole like this PC will reunify, and will further simplify the PC system, increase portability and the modularization of PC.
PCI Express is used on server and the PC more at present, and a pressure test is arranged in the product test process, and need pegging graft PCI Express interface upward, PCI Express test card carries out the power full load test.Prior art is to carry out the power full load test with the video card of accord with PCI Express standard, network interface card etc. as test card, but because the power of products such as these video cards, network interface card all is predefined, and PCI Express has a plurality of interface specifications, the maximum rated output of each interface specification is different, so PCI Express interface can not reach real full load test in actual test process, cause test inaccurate; And test different PCI Express interfaces and need change and plug different PCI Express test cards, cause test inconvenience.
Summary of the invention
In view of foregoing, be necessary to provide a kind of interface power consumption test card.
A kind of interface power consumption test card, comprise that a circuit board and that meets the corresponding interface specification is arranged at the load simulating device of described circuit board, described load simulating device comprises that one provides the stable-pressure device and of adjustable output voltage to receive described adjustable output voltage and is used for the load device of consumed power.
A kind of interface power consumption test card, comprise that a circuit board and that meets the corresponding interface specification is arranged at the load simulating device of described circuit board, described load simulating device comprises that one provides the stable-pressure device and of an output voltage to receive described output voltage and is used for the load device of consumed power, and described load device can insert the load of different resistances according to the required peak power of interface to be measured.
A kind of interface power consumption test card, comprise that a circuit board and that meets the corresponding interface specification is arranged at the load simulating device of described circuit board, described load simulating device comprises that one provides the stable-pressure device and of adjustable output voltage to receive described adjustable output voltage and is used for the load device of consumed power, and described load device can insert the load of different resistances according to the required peak power of interface to be measured.
Compare prior art, described interface power consumption test card can be simulated the required peak power of interface to be measured by described load simulating device, and test is accurate and convenient.
Description of drawings
The invention will be further described in conjunction with embodiment with reference to the accompanying drawings.
Fig. 1 is the stereographic map of the better embodiment of interface power consumption test card of the present invention.
Fig. 2 is the circuit diagram of the load simulating device of interface power consumption test card of the present invention.
Embodiment
Please refer to Fig. 1 and Fig. 2, the better embodiment of interface power consumption test card of the present invention is that example describes with the PCIExpress interface, it comprises that the PCB (Printed Circuit Board, printed circuit board (PCB)) 10 and of an accord with PCI Express interface specification is arranged on the load simulating device 20 in the described PCB10.The PCI Express slot 12 that described interface power consumption test card can be inserted on the circuit board carries out simulation test to its consumed power.
Described load simulating device 20 comprises a stable-pressure device 22 and a load device 24.Described stable-pressure device 22 comprises a voltage stabilizer 26 and a transistor Q1, and voltage stabilizer described in the present embodiment 26 is that the model of being produced by U.S. LINEAR company is the three-port variable voltage regulator of LM338.Described voltage stabilizer 26 comprises an input end V
IN, an output terminal V
OUTAn and adjustable side ADJ.
The input end V of described voltage stabilizer 26
INAnd output terminal V
OUTBetween insert one first voltage stabilizing diode D1, the positive pole of the described first voltage stabilizing diode D1 and described output terminal V
OUTConnect negative pole and described input end V
INConnect.The output terminal V of described voltage stabilizer 26
OUTReach a resistance R 1 in parallel and one second voltage stabilizing diode D2 between the ADJ of adjustable side.The positive pole of the described second voltage stabilizing diode D2 is connected with described adjustable side ADJ, negative pole and described output terminal V
OUTConnect.The input end V of described voltage stabilizer 26
INInsert the positive pole of a direct current power supply V1, described direct supply V1 is provided by a PCI Express interface 12 to be measured.Described direct supply V1 one first capacitor C 1 that inserts in parallel is in order to filtering noise information.The adjustable side ADJ of described voltage stabilizer 26 inserts the negative pole of described direct supply V1 by one second capacitor C 2.The adjustable side ADJ of described voltage stabilizer 26 also connects the common connection end of the first resistance R n of some parallel connections, and the other end of the first resistance R n of each parallel connection is the contact, and the resistance of the first resistance R n of each parallel connection is inequality.The negative pole of described direct supply V1 connects one first K switch 1, and when the throwing cutter and wherein the other end of one first resistance R n is connected of described first K switch 1, the described first resistance R n is an access circuit.The output terminal V of described voltage stabilizer 26
OUTInsert the negative pole of described direct supply V1 by one the 3rd capacitor C 3.Described second capacitor C 2 and described the 3rd capacitor C 3 are used for discharging and recharging, and can improve the ripple rejection ratio.Described first voltage stabilizing diode D1 and the described second voltage stabilizing diode D2 are used for preventing that described second capacitor C 2 and described the 3rd capacitor C 3 from damaging described voltage stabilizer 26 in discharge process.The collector of described transistor Q1 is connected with the positive pole of described direct supply V1, the output terminal V of base stage and described voltage stabilizer 26
OUTConnect.
Described load device 24 comprises the second resistance R m and a second switch K2 of one the 4th capacitor C 4, some parallel connections.The emitter of described transistor Q1 is by the negative pole of the described direct supply V1 of described the 4th capacitor C 4 accesses, and described the 4th capacitor C 4 is in order to filtering.The emitter of described transistor Q1 also inserts the common connection end of the second resistance R m of described some parallel connections, and the other end of the second resistance R m of each parallel connection is the contact, and the resistance of the second resistance R m of each parallel connection is inequality.The negative pole of described direct supply V1 connects described second switch K2, and when the throwing cutter and wherein the other end of one second resistance R m is connected of described second switch K2, the described second resistance R m is an access circuit.
According to the work characteristics of described voltage stabilizer 26, the input end V of described voltage stabilizer 26
INAfter inserting described direct supply V1, described output terminal V
OUTReach and produce 1.25 volts reference voltage between the described adjustable side ADJ.Suppose that described first K switch 1 is with one of them first resistance R n place in circuit, described output terminal V
OUTThe voltage of this moment is V2, then according to the bleeder circuit characteristics following equation is arranged:
Distortion has according to equation (1):
Be that described voltage stabilizer 26 provides a stable output voltage.
The emitter voltage of supposing described transistor Q1 is V3, at this moment the base stage of described transistor Q1 and the output terminal V of described voltage stabilizer 26
OUTConnect, so the base voltage of described transistor Q1 is V2, described transistor Q1 conducting this moment, then according to transistorized work characteristics and in conjunction with equation (2):
Suppose second switch K2 with one of them second resistance R m place in circuit, the then described second resistance R m is output load, and the load voltage that is added on the described second resistance R m is V3.When certain reason (is switched when inserting another second resistance R m such as described second switch K2, pull-up resistor changes because load current is constant) when causing described load voltage V3 to descend (or rising), the base stage of described transistor Q1, voltage rising (or decline) between emitter, thereby the collector that causes described transistor Q1, voltage decline (or rising) between emitter, because the collector of described transistor Q1 is connected with described direct supply V1, the collector voltage that is described transistor Q1 is constant, cause described load voltage V3 to raise (or decline), thereby reach the purpose of stablizing output load voltage V3.
Suppose that the power that the described second resistance R m produces is P when voltage V3, then, have according to horse-power formula and in conjunction with equation (3):
Because the resistance of described resistance R 1 is constant, the peak power of PCI Express interface to be measured is known, the resistance of the described second resistance R m, the first resistance R n can be according to formula (4) convert (resistance that can preestablish the second resistance R m be 500 ohm, calculates the resistance of the first resistance R n again).By described first K switch 1 and described second switch K2 the second required resistance R m, the first resistance R n place in circuit can be obtained required power P.
The second required resistance R m, the first resistance R n place in circuit can be satisfied the different required peak power of PCI Express interface of when test, and need not change slotting test card in addition, test accurately and convenient.
The described stable-pressure device 22 of present embodiment also can not comprise described transistor Q1, the output terminal V of promptly described voltage stabilizer 26
OUTDirectly be connected, at this moment described output terminal V with the common connection end of the second resistance R m of described parallel connection
OUTVoltage V2 be the output voltage of load.
The quantity of the described second resistance R m of present embodiment, the first resistance R n can be set as required, for example can only insert one second resistance R m and several first resistance R n, also can insert one first resistance R n and several second resistance R m.
Claims (12)
1. interface power consumption test card, comprise that a circuit board and that meets the corresponding interface specification is arranged at the load simulating device of described circuit board, described load simulating device comprises that one provides the stable-pressure device and of adjustable output voltage to receive described adjustable output voltage and is used for the load device of consumed power.
2. interface power consumption test card as claimed in claim 1, it is characterized in that: described stable-pressure device comprises a voltage stabilizer, described voltage stabilizer comprises an input end, one is used to export the output terminal and an adjustable side of described adjustable output voltage, the input end of described voltage stabilizer inserts the positive pole of a direct current power supply, connect a resistance between the output terminal of described voltage stabilizer and the adjustable side, the adjustable side of described voltage stabilizer also connects the common connection end of first resistance of some parallel connections, the resistance of first resistance of each parallel connection is inequality, the negative pole of described direct supply connects one first switch, and the cutter of throwing of described first switch optionally is connected with the other end of one of described first resistance.
3. interface power consumption test card as claimed in claim 1, it is characterized in that: described stable-pressure device comprises a voltage stabilizer and a transistor, described voltage stabilizer comprises an input end, one is used to export the output terminal and an adjustable side of a burning voltage, the input end of described voltage stabilizer inserts the positive pole of a direct current power supply, connect a resistance between the output terminal of described voltage stabilizer and the adjustable side, the adjustable side of described voltage stabilizer also connects the common connection end of first resistance of some parallel connections, the resistance of first resistance of each parallel connection is inequality, the negative pole of described direct supply connects one first switch, the cutter of throwing of described first switch optionally is connected with the other end of one of described first resistance, described transistorized collector is connected with the positive pole of described direct supply, base stage is connected with the output terminal of described voltage stabilizer, and described transistorized emitter is exported described adjustable output voltage.
4. as claim 2 or 3 described interface power consumption test cards, it is characterized in that: described load device comprises one second resistance, described adjustable output voltage inserts an end of described second resistance, and the other end of described second resistance is connected with the negative pole of described direct supply.
5. interface power consumption test card, comprise that a circuit board and that meets the corresponding interface specification is arranged at the load simulating device of described circuit board, described load simulating device comprises that one provides the stable-pressure device and of an output voltage to receive described output voltage and is used for the load device of consumed power, and described load device can insert the load of different resistances according to the required peak power of interface to be measured.
6. interface power consumption test card as claimed in claim 5, it is characterized in that: described stable-pressure device comprises a voltage stabilizer, described voltage stabilizer comprises that an input end, is used to export the output terminal and an adjustable side of described output voltage, the input end of described voltage stabilizer inserts the positive pole of a direct current power supply, connect a resistance between the output terminal of described voltage stabilizer and the adjustable side, be connected one first resistance between the adjustable side of described voltage stabilizer and the negative pole of described direct supply.
7. interface power consumption test card as claimed in claim 5, it is characterized in that: described stable-pressure device comprises a voltage stabilizer and a transistor, described voltage stabilizer comprises an input end, one is used to export the output terminal and an adjustable side of a burning voltage, the input end of described voltage stabilizer inserts the positive pole of a direct current power supply, connect a resistance between the output terminal of described voltage stabilizer and the adjustable side, be connected one first resistance between the adjustable side of described voltage stabilizer and the negative pole of described direct supply, described transistorized collector is connected with the positive pole of described direct supply, base stage is connected with the output terminal of described voltage stabilizer, and described transistorized emitter is exported described output voltage.
8. as claim 6 or 7 described interface power consumption test cards, it is characterized in that: described load device comprises second resistance and a second switch of some parallel connections, described output voltage inserts the common connection end of second resistance of described some parallel connections, the resistance of second resistance of each parallel connection is inequality, the negative pole of described direct supply connects described second switch, and the cutter of throwing of described second switch optionally is connected with the other end of one of described second resistance.
9. interface power consumption test card, comprise that a circuit board and that meets the corresponding interface specification is arranged at the load simulating device of described circuit board, described load simulating device comprises that one provides the stable-pressure device and of adjustable output voltage to receive described adjustable output voltage and is used for the load device of consumed power, and described load device can insert the load of different resistances according to the required peak power of interface to be measured.
10. interface power consumption test card as claimed in claim 9, it is characterized in that: described stable-pressure device comprises a voltage stabilizer, described voltage stabilizer comprises an input end, one is used to export the output terminal and an adjustable side of described adjustable output voltage, the input end of described voltage stabilizer inserts the positive pole of a direct current power supply, connect a resistance between the output terminal of described voltage stabilizer and the adjustable side, the adjustable side of described voltage stabilizer also connects the common connection end of first resistance of some parallel connections, the resistance of first resistance of each parallel connection is inequality, the negative pole of described direct supply connects one first switch, and the cutter of throwing of described first switch optionally is connected with the other end of one of described first resistance.
11. interface power consumption test card as claimed in claim 9, it is characterized in that: described stable-pressure device comprises a voltage stabilizer and a transistor, described voltage stabilizer comprises an input end, one is used to export the output terminal and an adjustable side of a burning voltage, the input end of described voltage stabilizer inserts the positive pole of a direct current power supply, connect a resistance between the output terminal of described voltage stabilizer and the adjustable side, the adjustable side of described voltage stabilizer also connects the common connection end of first resistance of some parallel connections, the resistance of first resistance of each parallel connection is inequality, the negative pole of described direct supply connects one first switch, the cutter of throwing of described first switch optionally is connected with the other end of one of described first resistance, described transistorized collector is connected with the positive pole of described direct supply, base stage is connected with the output terminal of described voltage stabilizer, and described transistorized emitter is exported described adjustable output voltage.
12. as claim 10 or 11 described interface power consumption test cards, it is characterized in that: described load device comprises second resistance and a second switch of some parallel connections, described adjustable output voltage inserts the common connection end of second resistance of described some parallel connections, the resistance of second resistance of each parallel connection is inequality, the negative pole of described direct supply connects described second switch, and the cutter of throwing of described second switch optionally is connected with the other end of one of described second resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610062441XA CN101135986B (en) | 2006-09-01 | 2006-09-01 | Interface power consumption test card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610062441XA CN101135986B (en) | 2006-09-01 | 2006-09-01 | Interface power consumption test card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101135986A true CN101135986A (en) | 2008-03-05 |
| CN101135986B CN101135986B (en) | 2010-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610062441XA Expired - Fee Related CN101135986B (en) | 2006-09-01 | 2006-09-01 | Interface power consumption test card |
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| Country | Link |
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| CN (1) | CN101135986B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8204733B2 (en) | 2008-06-26 | 2012-06-19 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Power testing apparatus for universal serial bus interface |
| CN104135150A (en) * | 2013-05-03 | 2014-11-05 | 深圳市海洋王照明工程有限公司 | Power circuit |
| CN112433163A (en) * | 2020-11-05 | 2021-03-02 | 海马汽车有限公司 | Storage battery performance detection table and traffic equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349105A (en) * | 2001-11-05 | 2002-05-15 | 常熟开关厂 | Test device for electronic circuit breaker |
-
2006
- 2006-09-01 CN CN200610062441XA patent/CN101135986B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8204733B2 (en) | 2008-06-26 | 2012-06-19 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Power testing apparatus for universal serial bus interface |
| CN104135150A (en) * | 2013-05-03 | 2014-11-05 | 深圳市海洋王照明工程有限公司 | Power circuit |
| CN104135150B (en) * | 2013-05-03 | 2017-11-21 | 深圳市海洋王照明工程有限公司 | A kind of power circuit |
| CN112433163A (en) * | 2020-11-05 | 2021-03-02 | 海马汽车有限公司 | Storage battery performance detection table and traffic equipment |
| CN112433163B (en) * | 2020-11-05 | 2024-03-01 | 海马汽车有限公司 | Storage battery performance detection table and traffic equipment |
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| Publication number | Publication date |
|---|---|
| CN101135986B (en) | 2010-12-08 |
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