CN209513980U - A kind of circuit detecting field-effect tube on state resistance - Google Patents
A kind of circuit detecting field-effect tube on state resistance Download PDFInfo
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- CN209513980U CN209513980U CN201822024723.1U CN201822024723U CN209513980U CN 209513980 U CN209513980 U CN 209513980U CN 201822024723 U CN201822024723 U CN 201822024723U CN 209513980 U CN209513980 U CN 209513980U
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- 238000012360 testing method Methods 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 abstract description 4
- 238000003908 quality control method Methods 0.000 abstract description 3
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Abstract
The utility model discloses a kind of circuits for detecting field-effect tube on state resistance, including direct-flow voltage regulation source, field-effect tube Q2 and Estimate of Resistance for DC Low Resistance tester, the cathode of the direct-flow voltage regulation source is connected with the first end of the source electrode of the field-effect tube Q2, the Estimate of Resistance for DC Low Resistance tester respectively, the anode of the direct-flow voltage regulation source is connected with the grid of the field-effect tube Q2, and the second end of the Estimate of Resistance for DC Low Resistance tester is connected with the drain electrode of the field-effect tube Q2.The utility model has the advantages that the on state resistance of field-effect tube can be detected quickly；It is at low cost equally applicable in test P communication field-effect tube, as long as exchanging power positive cathode, and the voltage of regulated power supply can be adjusted, the on state resistance of different phase can be tested according to the difference of VGS bias voltage, the on state resistance of high-volume field-effect tube can quickly be examined, it applies in Incoming Quality Control, without building circuit, because on state resistance is the milliohm order of magnitude, avoid the error of lead, test data quicklook.
Description
Technical field
The utility model relates to field-effect tube technical fields, it particularly relates to a kind of detection field-effect tube on state resistance
Circuit.
Background technique
With the rapid development of semiconductor technology, increase substantially the performance of field-effect tube, this parameter of on state resistance
It is even more important in low-voltage, high-current occasion, because on state resistance is big, power consumption is with regard to big.So how on state resistance is accurately detected, at
For the thing of engineers and technicians' concern.In industry, there are the pertinent instruments of test field-effect tube on state resistance, but price is high
It is expensive.According to traditional test method, circuit complexity is built, it is higher to the required precision of instrument, to testing staff with very big
It is difficult.How this is dexterously solved the problems, such as, this just proposes a great challenge.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Utility model content
For the problems in the relevant technologies, the utility model proposes a kind of circuit for detecting field-effect tube on state resistance, with
Overcome above-mentioned technical problem present in existing the relevant technologies.
For this purpose, the specific technical solution that the utility model uses is as follows:
A kind of circuit detecting field-effect tube on state resistance, including direct-flow voltage regulation source, field-effect tube Q2 and Estimate of Resistance for DC Low Resistance
Tester, the cathode of the direct-flow voltage regulation source respectively with the source S of the field-effect tube Q2, the Estimate of Resistance for DC Low Resistance tester
First end is connected, and the anode of the direct-flow voltage regulation source is connected with the grid G of the field-effect tube Q2, the Estimate of Resistance for DC Low Resistance
The second end of tester is connected with the drain D of the field-effect tube Q2.
Further, the direct-flow voltage regulation source can adjust the voltage of regulated power supply according to the difference of VGS bias voltage,
The on state resistance of different phase can be tested.
Further, when carrying out detection field-effect tube on state resistance, which is that N links up the inspection of field-effect tube on state resistance
Slowdown monitoring circuit.
Further, when carrying out detection field-effect tube on state resistance, test P communication field-effect tube is equally applicable, as long as
Exchange power positive cathode.
Further, on circuit, as long as disconnecting the component of interference, the on-state of field-effect tube equally can quickly be detected
Resistance.
The utility model has the following beneficial effects: can simply and easily be detected by this detection circuit, even if in electricity
On the road, as long as disconnecting the component of interference, the on state resistance of field-effect tube equally can quickly be detected；It is at low cost to test P ditch
Logical field-effect tube is equally applicable, if exchange power positive cathode, and can be adjusted according to the difference of VGS bias voltage
The voltage of regulated power supply can test the on state resistance of different phase, can quickly examine the on-state electricity of high-volume field-effect tube
Resistance, is applied in Incoming Quality Control；Without building circuit, loss is reduced, because on state resistance is the milliohm order of magnitude, avoids lead
Error, test data quicklook.
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 detection circuit according to a kind of circuit of detection field-effect tube on state resistance of the utility model embodiment
Figure.
Specific embodiment
To further illustrate each embodiment, the utility model is provided with attached drawing, these attached drawings are in the utility model discloses
A part of appearance mainly to illustrate embodiment, and can cooperate the associated description of specification former come the running for explaining embodiment
Reason, cooperation refer to these contents, and those of ordinary skill in the art will be understood that other possible embodiments and this is practical new
The advantages of type, the component in figure is not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.
Embodiment according to the present utility model provides a kind of circuit for detecting field-effect tube on state resistance.
Embodiment one:
As shown in Figure 1, according to a kind of circuit of detection field-effect tube on state resistance of the utility model embodiment, including it is straight
Flow source of stable pressure, field-effect tube Q2 and Estimate of Resistance for DC Low Resistance tester, the cathode of the direct-flow voltage regulation source respectively with the field-effect tube
The source S of Q2, the first end of the Estimate of Resistance for DC Low Resistance tester are connected, anode and the field-effect of the direct-flow voltage regulation source
The grid G of pipe Q2 is connected, and the second end of the Estimate of Resistance for DC Low Resistance tester is connected with the drain D of the field-effect tube Q2.
With the aid of the technical scheme, by the way that the grid G on field-effect tube Q2 is connected with the anode on direct-flow voltage regulation source
It connects, the source level S on field-effect tube Q2 is connected with the cathode on direct-flow voltage regulation source, by the drain D and direct current of field-effect tube Q2
The second end of low resistance tester is connected, and then direct-flow voltage regulation source is powered, and may finally directly test in Estimate of Resistance for DC Low Resistance
It is directly read on instrument.
Embodiment two:
As shown in Figure 1, the direct-flow voltage regulation source can adjust the voltage of regulated power supply according to the difference of VGS bias voltage,
The on state resistance of different phase can be tested.
As shown in Figure 1, the circuit is that N links up field-effect tube on state resistance when carrying out detection field-effect tube on state resistance
Detection circuit.
As shown in Figure 1, test P communication field-effect tube is equally applicable when carrying out detection field-effect tube on state resistance, as long as
Exchange power positive cathode.
As shown in Figure 1, as long as disconnecting the component of interference, equally can quickly detect the logical of field-effect tube on circuit
State resistance.
Working principle: by the way that the grid G on field-effect tube Q2 is connected with the anode on direct-flow voltage regulation source, by field-effect
Source level S on pipe Q2 is connected with the cathode on direct-flow voltage regulation source, by the drain D of field-effect tube Q2 and Estimate of Resistance for DC Low Resistance tester
Second end be connected, then direct-flow voltage regulation source is powered, directly may finally directly be read on Estimate of Resistance for DC Low Resistance tester.
In conclusion by means of the above-mentioned technical proposal of the utility model, it can be simply and easily by this detection circuit
It is detected, even if, as long as disconnecting the component of interference, equally can quickly detect the on-state electricity of field-effect tube on circuit
Resistance；It is at low cost equally applicable in test P communication field-effect tube, as long as exchange power positive cathode, and can be inclined according to VGS
The difference for setting voltage adjusts the voltage of regulated power supply, can test the on state resistance of different phase, can quickly examine high-volume
The on state resistance of field-effect tube, is applied in Incoming Quality Control；Without building circuit, loss is reduced, because on state resistance is milliohm
The order of magnitude avoids the error of lead, test data quicklook.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (5)
1. a kind of circuit for detecting field-effect tube on state resistance, which is characterized in that including direct-flow voltage regulation source, field-effect tube Q2 and straight
Flow low resistance tester, the cathode of the direct-flow voltage regulation source respectively with the source S of the field-effect tube Q2, the Estimate of Resistance for DC Low Resistance
The first end of tester is connected, and the anode of the direct-flow voltage regulation source is connected with the grid G of the field-effect tube Q2, described straight
The second end of stream low resistance tester is connected with the drain D of the field-effect tube Q2.
2. a kind of circuit for detecting field-effect tube on state resistance according to claim 1, which is characterized in that the direct current is steady
Potential source can adjust the voltage of regulated power supply, can test the on state resistance of different phase according to the difference of VGS bias voltage.
3. a kind of circuit for detecting field-effect tube on state resistance according to claim 1, which is characterized in that detected
When field-effect tube on state resistance, which is that N links up field-effect tube on state resistance detection circuit.
4. a kind of circuit for detecting field-effect tube on state resistance according to claim 1, which is characterized in that detected
When field-effect tube on state resistance, it is equally applicable that test P links up field-effect tube, as long as exchanging power positive cathode.
5. a kind of circuit for detecting field-effect tube on state resistance according to claim 1, which is characterized in that on circuit,
As long as disconnecting the component of interference, the on state resistance of field-effect tube equally can be quickly detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822024723.1U CN209513980U (en) | 2018-12-04 | 2018-12-04 | A kind of circuit detecting field-effect tube on state resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822024723.1U CN209513980U (en) | 2018-12-04 | 2018-12-04 | A kind of circuit detecting field-effect tube on state resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209513980U true CN209513980U (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822024723.1U Active CN209513980U (en) | 2018-12-04 | 2018-12-04 | A kind of circuit detecting field-effect tube on state resistance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308310A (en) * | 2020-05-15 | 2020-06-19 | 佛山市联动科技股份有限公司 | Dynamic rds (on) parameter testing machine of gallium nitride device |
| CN112649749A (en) * | 2020-11-16 | 2021-04-13 | 中车长春轨道客车股份有限公司 | Controllable battery short circuit testing device and testing method thereof |
| CN112698179A (en) * | 2021-01-08 | 2021-04-23 | 胜达克半导体科技(上海)有限公司 | Precise measurement method for floating direct current small signal voltage |
-
2018
- 2018-12-04 CN CN201822024723.1U patent/CN209513980U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308310A (en) * | 2020-05-15 | 2020-06-19 | 佛山市联动科技股份有限公司 | Dynamic rds (on) parameter testing machine of gallium nitride device |
| CN111308310B (en) * | 2020-05-15 | 2020-08-21 | 佛山市联动科技股份有限公司 | Dynamic rds (on) parameter testing machine of gallium nitride device |
| CN112649749A (en) * | 2020-11-16 | 2021-04-13 | 中车长春轨道客车股份有限公司 | Controllable battery short circuit testing device and testing method thereof |
| CN112698179A (en) * | 2021-01-08 | 2021-04-23 | 胜达克半导体科技(上海)有限公司 | Precise measurement method for floating direct current small signal voltage |
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Effective date of registration: 20231204 Address after: 529000 Room 203, Floor 2, Building 1, No. 21, Jintong Road, Tangxia Town, Pengjiang District, Jiangmen City, Guangdong Province Patentee after: Jiangmen Xiaosong Intelligent Technology Co.,Ltd. Address before: 529085 301, Floor 3, Building 2, No. 21, Jintong Road, Tangxia Town, Pengjiang District, Jiangmen City, Guangdong Province Patentee before: JIANGMEN PENGJIANG DISTRICT JINYING TECHNOLOGY Co.,Ltd. |