CN211928065U - Test circuit - Google Patents
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- CN211928065U CN211928065U CN202020485063.1U CN202020485063U CN211928065U CN 211928065 U CN211928065 U CN 211928065U CN 202020485063 U CN202020485063 U CN 202020485063U CN 211928065 U CN211928065 U CN 211928065U
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Abstract
The utility model provides a test circuit for the quick-charging test of power products with multiple USB ports, which comprises a power module, a port function control circuit and at least one USB test unit, wherein each USB test unit comprises a USB test port, a quick-charging protocol circuit, a voltage and current detection circuit, a product configuration circuit to be tested and a load setting circuit; the utility model discloses a fill agreement circuit, voltage current detection circuit, the product configuration circuit that awaits measuring and load in port function control circuit's the control and a plurality of USB test unit and set up mutually supporting of circuit soon, realize the test of filling soon of a plurality of USB ports of the product that awaits measuring, shortened test time, improved the production speed of product, the cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of the power product fills soon, especially, relate to a test circuit that fills test soon of power product for many USB port outputs.
Background
In order to meet the diversified demands of people on power supply products, a plurality of power supply products with multiple USB port outputs are circulated in the market at present, and the power supply products need to realize a quick charging mode. In order to ensure that each USB port of each power supply product circulating in the market supports the nominal quick-charging output specification, necessary tests need to be carried out on each USB port according to the product specification definition in the production test stage of the power supply product so as to screen out products which cannot be normally and quickly charged and output or do not meet the specification requirements.
For the rapid charging test of a power supply product with multiple USB ports for output in a production test stage, a conventional test mode is that a USB connecting line is used for connecting a USB port of a test device with a USB port of a product to be tested, after the test of one USB port of the product to be tested is completed, the connecting line is switched to the other USB port of the product to be tested and the test is continued until all the USB ports are tested, and the test device has the disadvantages of long test time consumption, low production speed of the product and high cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of above-mentioned prior art existence, provide a test circuit that fills the test soon for power product of many USB ports output, fill agreement circuit, voltage current detection circuit, the product configuration circuit that awaits measuring and the mutually supporting of load setting circuit in control through port function control circuit and a plurality of USB test unit soon, realize the test of filling soon of a plurality of USB ports of the product that awaits measuring, test time has been shortened, the production speed of product has been improved, and the cost is reduced.
The utility model provides a test circuit, which is used for the quick charging test of power products with multiple USB ports, and comprises a power module, a port function control circuit and at least one USB test unit, wherein each USB test unit comprises a USB test port, a quick charging protocol circuit, a voltage current detection circuit, a product configuration circuit to be tested and a load setting circuit;
one end of the USB test port is connected with a USB port to be tested corresponding to a product to be tested through a USB connecting line, and the other end of the USB test port is respectively and electrically connected with a quick charging protocol circuit, a product configuration circuit to be tested and a load setting circuit in a USB test unit to which the USB test port belongs;
the quick charge protocol circuit is used for applying for quick charge output to a USB port to be tested of a product to be tested and setting different quick charge protocol decoys according to the output specification of each USB port to be tested of the product to be tested;
the voltage and current detection circuit is used for detecting the voltage value and the current value of the USB test port and judging whether the voltage value and the current value meet the requirements or not, and the voltage and current detection circuit is electrically connected with the load setting circuit;
the product configuration circuit to be tested is used for configuring internal parameters of the product to be tested according to the product specification and the test requirement;
the load setting circuit is used for loading test on the USB test ports, and the load setting circuit configures corresponding loads according to the output power specification of each USB port to be tested;
the port function control circuit is respectively and electrically connected with the quick charge protocol circuit, the voltage and current detection circuit, the configuration circuit of the product to be tested and the load setting circuit in each USB test unit, and is used for configuring the working states of the quick charge protocol circuit, the voltage and current detection circuit, the configuration circuit of the product to be tested and the load setting circuit in each USB test unit according to the specification of each USB port to be tested of the product to be tested; the power supply module is used for providing power supply and is electrically connected with the port function control circuit.
Further, the load setting circuit includes a load setting controller, a first comparator COMP1, a MOS transistor and a first resistor R1, a positive input end of the first comparator COMP1 is connected to the load setting controller, a negative input end of the first comparator COMP1 is connected to a first end of the first resistor R1, an output end of the first comparator COMP1 is electrically connected to the MOS transistor, the MOS transistor is electrically connected to the load setting controller and the first end of the first resistor R1, and a second end of the first resistor R1 is electrically connected to the voltage current detection circuit and grounded.
Further, the voltage current detection circuit comprises a voltage current detection controller, a current sensor A1, a second resistor R2, a third resistor R3, a second comparator COMP2 and a third comparator COMP3, two input ends of the current sensor A1 are respectively and correspondingly electrically connected with two ends of the first resistor R1, the output end of the current sensor a1 is connected to the positive input end of the second comparator COMP2, the negative input end and the output end of the second comparator COMP2 are respectively and electrically connected with the voltage and current detection controller, the first end of the second resistor R2 is electrically connected with the MOS tube in the load setting circuit, the second end is electrically connected with the first end of the third resistor R3, the second end of the third resistor R3 is grounded, the common end of the second resistor R2 and the third resistor R3 is further electrically connected to the negative input end of the third comparator COMP3, a positive input end and an output end of the third comparator COMP3 are respectively electrically connected with the voltage and current detection controller.
Furthermore, the quick-charging protocol circuit comprises at least one quick-charging module, the quick-charging modules are sequentially connected in series and are respectively and electrically connected with the USB test port of the USB test unit, and the port function control circuit is respectively connected with each quick-charging module.
Furthermore, the configuration circuit of the product to be tested comprises an IIC module and a data module, wherein one end of the IIC module is connected with the USB port to be tested, the other end of the IIC module is connected with the data module, and the data module is electrically connected with the port function control circuit.
Further, the port function control circuit is electrically connected with the load setting controller and the voltage current detection controller, respectively.
Further, each USB test unit further includes a first switch S1 and a second switch S2, the first switch S1 is disposed between the fast charging protocol circuit and the USB test port and is electrically connected to the port function control circuit, and the second switch S2 is disposed between the product configuration circuit to be tested and the USB test port and is electrically connected to the port function control circuit.
The utility model has the advantages that:
the utility model provides a test circuit for the quick-charging test of power products with multiple USB ports, which comprises a power module, a port function control circuit and at least one USB test unit, wherein each USB test unit comprises a USB test port, a quick-charging protocol circuit, a voltage and current detection circuit, a product configuration circuit to be tested and a load setting circuit; the utility model discloses a fill agreement circuit, voltage current detection circuit, the product configuration circuit that awaits measuring and load in port function control circuit's the control and a plurality of USB test unit and set up mutually supporting of circuit soon, realize the test of filling soon of a plurality of USB ports of the product that awaits measuring, shortened test time, improved the production speed of product, the cost is reduced.
Drawings
The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.
Fig. 1 is a schematic circuit block diagram of a test circuit provided by the present invention.
Fig. 2 is a schematic circuit diagram of a USB test unit of the test circuit provided by the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Example 1:
referring to fig. 1 to 2, the present embodiment provides a test circuit, which is used for a fast charging test of a power supply product output by multiple USB ports, and includes a power supply module, a port function control circuit, and at least one USB test unit, which is a USB test unit 1 and a USB test unit 2 … USB test unit N, respectively, where each of the USB test units includes a USB test port, a fast charging protocol circuit, a voltage and current detection circuit, a to-be-tested product configuration circuit, and a load setting circuit.
One end of the USB test port is connected with the USB port to be tested corresponding to the product to be tested through a USB connecting line, and the other end of the USB test port is respectively and electrically connected with the quick charging protocol circuit, the product configuration circuit to be tested and the load setting circuit in the USB test unit to which the USB test port belongs.
The quick-charging protocol circuit is used for applying for quick-charging output to the USB port to be tested of the product to be tested and setting different quick-charging protocol decoys according to the output specification of each USB port to be tested of the product to be tested. The quick-charging protocol circuit comprises at least one quick-charging module, the quick-charging modules are sequentially connected in series and are respectively and electrically connected with a USB test port of the USB test unit, and the port function control circuit is respectively connected with each quick-charging module.
The voltage and current detection circuit is used for detecting the voltage value and the current value of the USB test port and judging whether the voltage value and the current value meet requirements or not, and the voltage and current detection circuit is electrically connected with the load setting circuit. The voltage and current detection circuit comprises a voltage and current detection controller, a current sensor A1, a second resistor R2, a third resistor R3, a second comparator COMP2 and a third comparator COMP3, two input ends of the current sensor A1 are respectively and correspondingly electrically connected with two ends of the first resistor R1, the output end of the current sensor a1 is connected to the positive input end of the second comparator COMP2, the negative input end and the output end of the second comparator COMP2 are respectively and electrically connected with the voltage and current detection controller, the first end of the second resistor R2 is electrically connected with the MOS tube in the load setting circuit, the second end is electrically connected with the first end of the third resistor R3, the second end of the third resistor R3 is grounded, the common end of the second resistor R2 and the third resistor R3 is further electrically connected to the negative input end of the third comparator COMP3, a positive input end and an output end of the third comparator COMP3 are respectively electrically connected with the voltage and current detection controller.
The product configuration circuit to be tested configures the internal parameters of the product to be tested according to the specification and the test requirement of the product to be tested, and the product to be tested is matched with the quick charging protocol circuit in the test circuit, so that the test time can be shortened. The configuration circuit of the product to be tested comprises an IIC module and a data module, wherein one end of the IIC module is connected with the USB port to be tested, the other end of the IIC module is connected with the data module, and the data module is electrically connected with the port function control circuit.
The load setting circuit is used for loading test on the USB test ports, and the load setting circuit configures corresponding loads according to the output power specification of each USB port to be tested. The load setting circuit comprises a load setting controller, a first comparator COMP1, an MOS (metal oxide semiconductor) tube and a first resistor R1, wherein the positive input end of the first comparator COMP1 is connected with the load setting controller, the negative input end of the first comparator COMP1 is connected with the first end of the first resistor R1, the output end of the first comparator COMP1 is electrically connected with the MOS tube, the MOS tube is respectively and electrically connected with the load setting controller and the first end of the first resistor R1, and the second end of the first resistor R1 is simultaneously and electrically connected with the voltage and current detection circuit and grounded.
The port function control circuit is respectively and electrically connected with the quick charge protocol circuit, the voltage and current detection circuit, the to-be-tested product configuration circuit and the load setting circuit in each USB test unit and is used for configuring the working states of the quick charge protocol circuit, the voltage and current detection circuit, the to-be-tested product configuration circuit and the load setting circuit in each USB test unit according to the specification of each USB to-be-tested port of the to-be-tested product, and the port function control circuit is respectively and electrically connected with the load setting controller and the voltage and current detection controller; the power supply module is used for providing power supply and is electrically connected with the port function control circuit.
Each USB test unit further comprises a first switch S1 and a second switch S2, the first switch S1 is arranged between the quick charge protocol circuit and the USB test port and is electrically connected with the port function control circuit, the second switch S2 is arranged between the product configuration circuit to be tested and the USB test port and is electrically connected with the port function control circuit, and the port function control circuit controls the on-off of the first switch S1 and the second switch S2 to realize the working states of the quick charge protocol circuit and the product configuration circuit to be tested in each USB test unit.
Compared with the prior art, the utility model provides a test circuit that is used for quick charge test of power product of many USB ports output, including power module, port function control circuit and at least one USB test element, each USB test element includes USB test port, quick charge agreement circuit, voltage current detection circuit, the product configuration circuit that awaits measuring and load setting circuit; the utility model discloses a fill agreement circuit, voltage current detection circuit, the product configuration circuit that awaits measuring and load in port function control circuit's the control and a plurality of USB test unit and set up mutually supporting of circuit soon, realize the test of filling soon of a plurality of USB ports of the product that awaits measuring, shortened test time, improved the production speed of product, the cost is reduced.
Finally, it should be emphasized that the present invention is not limited to the above-described embodiments, but only to the preferred embodiments of the invention, and is not limited to the embodiments, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (7)
1. A test circuit is used for the quick charge test of a power supply product output by a plurality of USB ports and is characterized by comprising a power supply module, a port function control circuit and at least one USB test unit, wherein each USB test unit comprises a USB test port, a quick charge protocol circuit, a voltage and current detection circuit, a to-be-tested product configuration circuit and a load setting circuit;
one end of the USB test port is connected with a USB port to be tested corresponding to a product to be tested through a USB connecting line, and the other end of the USB test port is respectively and electrically connected with a quick charging protocol circuit, a product configuration circuit to be tested and a load setting circuit in a USB test unit to which the USB test port belongs;
the quick charge protocol circuit is used for applying for quick charge output to a USB port to be tested of a product to be tested and setting different quick charge protocol decoys according to the output specification of each USB port to be tested of the product to be tested;
the voltage and current detection circuit is used for detecting the voltage value and the current value of the USB test port and judging whether the voltage value and the current value meet the requirements or not, and the voltage and current detection circuit is electrically connected with the load setting circuit;
the product configuration circuit to be tested is used for configuring internal parameters of the product to be tested according to the product specification and the test requirement;
the load setting circuit is used for loading test on the USB test ports, and the load setting circuit configures corresponding loads according to the output power specification of each USB port to be tested;
the port function control circuit is respectively and electrically connected with the quick charge protocol circuit, the voltage and current detection circuit, the configuration circuit of the product to be tested and the load setting circuit in each USB test unit, and is used for configuring the working states of the quick charge protocol circuit, the voltage and current detection circuit, the configuration circuit of the product to be tested and the load setting circuit in each USB test unit according to the specification of each USB port to be tested of the product to be tested; the power supply module is used for providing power supply and is electrically connected with the port function control circuit.
2. The test circuit as claimed in claim 1, wherein the load setting circuit comprises a load setting controller, a first comparator COMP1, a MOS transistor and a first resistor R1, a positive input terminal of the first comparator COMP1 is connected to the load setting controller, a negative input terminal of the first comparator COMP1 is connected to a first end of the first resistor R1, an output terminal of the first comparator COMP1 is electrically connected to the MOS transistor, the MOS transistor is electrically connected to the load setting controller and the first end of the first resistor R1, respectively, and a second end of the first resistor R1 is electrically connected to the voltage current detection circuit and the ground at the same time.
3. The test circuit as claimed in claim 2, wherein the voltage-current detection circuit comprises a voltage-current detection controller, a current sensor a1, a second resistor R2, a third resistor R3, a second comparator COMP2 and a third comparator COMP3, two input terminals of the current sensor a1 are electrically connected to two ends of the first resistor R1, respectively, an output terminal of the current sensor a1 is connected to a positive input terminal of the second comparator COMP2, a negative input terminal and an output terminal of the second comparator COMP2 are electrically connected to the voltage-current detection controller, respectively, a first terminal of the second resistor R2 is electrically connected to the MOS transistor in the load setting circuit, a second terminal of the second resistor R3 is electrically connected to a first terminal of the third resistor R3, a second terminal of the third resistor R3 is connected to ground, a common terminal of the second resistor R2 and the third resistor R3 is further electrically connected to a negative input terminal of the third comparator COMP3, a positive input end and an output end of the third comparator COMP3 are respectively electrically connected with the voltage and current detection controller.
4. The test circuit according to claim 3, wherein the fast charge protocol circuit comprises at least one fast charge module, the fast charge modules are sequentially connected in series and are electrically connected to the USB test port of the USB test unit, and the port function control circuit is connected to each fast charge module.
5. The test circuit as claimed in claim 4, wherein the configuration circuit of the product under test comprises an IIC module and a data module, wherein one end of the IIC module is connected with the USB port under test, the other end of the IIC module is connected with the data module, and the data module is electrically connected with the port function control circuit.
6. A test circuit as claimed in claim 5, wherein the port function control circuit is electrically connected to the load setting controller and the voltage-current detection controller, respectively.
7. A test circuit as claimed in claim 5, wherein each of said USB test units further comprises a first switch S1 and a second switch S2, said first switch S1 is disposed between the fast charge protocol circuit and the USB test port and is electrically connected to the port function control circuit, said second switch S2 is disposed between the product under test configuration circuit and the USB test port and is electrically connected to the port function control circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020485063.1U CN211928065U (en) | 2020-04-03 | 2020-04-03 | Test circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020485063.1U CN211928065U (en) | 2020-04-03 | 2020-04-03 | Test circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337783A (en) * | 2020-04-03 | 2020-06-26 | 深圳英集芯科技有限公司 | Test circuit and test method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337783A (en) * | 2020-04-03 | 2020-06-26 | 深圳英集芯科技有限公司 | Test circuit and test method thereof |
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Address after: Room 3104, block a, building 8, Shenzhen International Innovation Valley, Dashi 1st Road, Xili community, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen yingjixin Technology Co.,Ltd. Address before: 1301, building A2, Kexing Science Park, 15 Keyuan Road, Yuehai street, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN INJOINIC TECHNOLOGY Co.,Ltd. |
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