CN218068169U - Testing device for direct-current voltage regulator - Google Patents
Testing device for direct-current voltage regulator Download PDFInfo
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- CN218068169U CN218068169U CN202221873264.4U CN202221873264U CN218068169U CN 218068169 U CN218068169 U CN 218068169U CN 202221873264 U CN202221873264 U CN 202221873264U CN 218068169 U CN218068169 U CN 218068169U
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Abstract
The utility model provides a direct current voltage regulator testing arrangement, include: the device comprises an input module, an adjusting circuit and an output module. The input module comprises an input interface for inputting a test voltage; the adjusting circuit is connected to the DC voltage adjuster to be measured, and comprises a voltage regulating resistor, and the required output voltage is formed by regulating the voltage regulating resistor; the output module comprises an output interface for outputting the output voltage. The utility model provides a verification problems of voltage regulator's electrical characteristic, board level job stabilization nature and calorifics environment etc. are particularly useful for the relevant capability test to domestic voltage regulator.
Description
Technical Field
The utility model relates to a voltage regulator technical field especially relates to a direct current voltage regulator testing arrangement.
Background
The voltage regulator has the advantages of small input-output voltage difference, low power consumption, high precision and the like, is mainly applied to a rack server, a computer terminal and a power management system, and is a key component in the system. In recent years, in order to solve the problem of neck clamping of imported electronic components, domestic component manufacturers independently develop multiple voltage adjusting chips, and due to the lack of application verification on newly-developed domestic components, a large number of domestic chips have various situations such as 'poor use', 'dare use' and 'poor use'. Therefore, the application verification work for the newly developed domestic voltage regulator is very important.
SUMMERY OF THE UTILITY MODEL
The utility model discloses what solve is the verification problem of voltage regulator's electrical characteristic, board level job stabilization nature and calorifics environment etc. is particularly useful for the relevant capability test to domestic voltage regulator.
The utility model provides a direct current voltage regulator testing arrangement, include: the device comprises an input module, an adjusting circuit and an output module. The input module comprises an input interface for inputting test voltage; the adjusting circuit is connected to the direct-current voltage adjuster to be detected, comprises a voltage-regulating resistor and forms required output voltage by regulating the voltage-regulating resistor; the output module comprises an output interface for outputting the output voltage.
According to some embodiments of the utility model, direct voltage regulator testing arrangement still includes the enable controller, and the enable controller is connected to the enable control end of the direct voltage regulator that awaits measuring, provides enable control signal.
According to the utility model discloses a some embodiments, the DC voltage regulator that awaits measuring is through first inductance subassembly and input interface connection.
According to some embodiments of the present invention, the adjusting circuit includes a first voltage regulating resistor and a second voltage regulating resistor, one end of the first voltage regulating resistor is connected to the dc voltage adjuster to be measured, and the other end is grounded; one end of the second voltage regulating resistor is connected to the direct current voltage regulator to be tested, and the other end of the second voltage regulating resistor is connected to the output module.
According to the utility model discloses a some embodiments, output module still includes voltage status indication foot, and voltage status indication foot passes through the resistance and inserts the DC voltage regulator that awaits measuring for instruct output voltage's state.
According to some embodiments of the utility model, the DC voltage regulator that awaits measuring passes through second inductance component and output interface connection.
According to some embodiments of the invention, the dc voltage regulator testing device is further connected to the test circuit through the input interface or the output interface.
The utility model provides a direct current voltage regulator testing arrangement passes through functions and the performance of adjustment circuit, test circuit etc. verification direct current voltage regulator that awaits measuring, can be effective, reliable tests voltage regulator's especially domestic voltage regulator's functions and performance to verify whether voltage regulator satisfies the application demand, promote newly-researched electronic components and part and use verification ability and level.
Drawings
Fig. 1 is a schematic block diagram of a dc voltage regulator testing apparatus according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a dc voltage regulator testing apparatus according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1, the utility model provides a dc voltage regulator testing arrangement, include: the device comprises an input module, an adjusting circuit and an output module. The input module comprises an input interface for inputting a test voltage; the adjusting circuit is connected to the DC voltage adjuster to be measured, and comprises a voltage regulating resistor, and the required output voltage is formed by regulating the voltage regulating resistor; the output module comprises an output interface for outputting the output voltage. The testing device of the direct-current voltage regulator adopts a direct-current power supply to supply power.
According to some embodiments of the utility model, direct voltage regulator testing arrangement still includes the enable controller, and the enable controller is connected to the enable control end of the direct voltage regulator that awaits measuring, provides enable control signal. The DC voltage regulator to be tested is connected with an enabling signal to drive the DC voltage regulator to be tested to work. The enable signal is a single frequency signal that is typically generated by an enable controller, typically a signal generator, that can be used to tune the resonant frequency in the tuned loop. As shown in fig. 2, the enable signal is connected to the enable control terminal EN of the dc voltage regulator to be tested, for driving the dc voltage regulator to be tested to work.
According to some embodiments of the utility model, the direct current voltage regulator that awaits measuring passes through first inductance component and input interface connection.
According to some embodiments of the present invention, the adjusting circuit includes a first voltage regulating resistor and a second voltage regulating resistor, one end of the first voltage regulating resistor is connected to the dc voltage adjuster to be measured, and the other end is grounded; one end of the second voltage regulating resistor is connected to the DC voltage regulator to be measured, and the other end of the second voltage regulating resistor is connected to the output module. As shown in fig. 2, R21 is a first voltage regulating resistor, R22 is a second voltage regulating resistor, and the voltage regulating resistors output voltages meeting the requirements by regulating the resistance values of R21 and R22. R21 and R22 may be sliding resistors.
According to the utility model discloses a some embodiments, output module still includes voltage status indication foot, and voltage status indication foot passes through the resistance and inserts the DC voltage regulator that awaits measuring for instruct output voltage's state. As shown in fig. 2, U31 is an output voltage status indication pin, which is connected to high level through a resistor R20, and outputs a high signal when the output voltage reaches a set range, and otherwise outputs a low signal.
According to the utility model discloses a some embodiments, the DC voltage regulator that awaits measuring passes through second inductance component and output interface connection.
According to some embodiments of the invention, the dc voltage regulator testing device is further connected to the test circuit through the input interface or the output interface. A multimeter can be included in the test circuit to detect whether the incoming or outgoing circuit is shorted. The test circuit can also be other load circuits and is used for collecting test data and verifying whether parameters such as an input voltage range, an output voltage precision, an output current, a PSRR and the like of the voltage regulator meet requirements or not through the test data, so that whether the function and the performance of the voltage regulator meet actual use requirements or not is verified.
The utility model discloses a direct current voltage regulator testing arrangement is supplied power by DC power supply, and the operating procedure includes:
firstly, connecting a direct-current voltage regulator to be tested into the direct-current voltage regulator testing device according to actual use conditions and requirements;
and secondly, turning on the direct-current power supply to enable the direct-current voltage regulator testing device to work, and inputting the testing voltage, the bias voltage and the enabling signal such as a high-frequency signal into the direct-current voltage regulator testing device.
And thirdly, accessing a peripheral test circuit at the input interface and the output interface, and checking whether the input voltage or the output voltage is short-circuited.
And fourthly, adjusting the resistance value in the testing device of the direct-current voltage regulator and outputting the required voltage.
And fifthly, acquiring test data by using a peripheral test circuit to form correlation characteristic curves of output current and efficiency, voltage regulation rate and input voltage, current regulation rate and output current, output voltage regulation range and voltage regulation resistor, insulation resistor and isolation voltage and the like, so as to verify whether the voltage regulator meets the use requirement.
The following are specific embodiments of a circuit suitable for testing 744XX series voltage regulators, such as the SM74401RGW model, which typically have very low self-noise and high Power Supply Rejection Ratio (PSRR), as shown in fig. 2. The U29 is an input interface, the U31 is an output voltage state indication pin, the U32 is an output interface, the VBIAS end of the dc voltage regulator to be tested is used for inputting a bias voltage, and the EN end is an enable control end for accessing an enable signal.
As shown IN fig. 2, 4 input terminals IN1, IN2, IN3, IN4 of the dc voltage regulator to be tested are connected to the input interface U29 through a first inductance component, 4 output terminals OUT1, OUT2, OUT3, OUT4 of the dc voltage regulator to be tested are connected to the output interface U32 through a second inductance component, R21 is a first voltage regulating resistor, and R22 is a second voltage regulating resistor. A test voltage of 3.3V is input at the input interface U29, a bias voltage of 5V is input at the bias voltage input interface VBIAS, and a high frequency enable signal is input at the EN terminal, and in order to adjust the output voltage of the output terminal U32 to 1.8V, R21 is set to 1.24K ohm, and R22 is set to 1K ohm. And a test circuit is connected to the U32 to test the function and the performance of the DC voltage regulator to be tested. By connecting different test circuits, the electrical characteristics, the board-level working stability, the thermal environment and the like of the DC voltage regulator to be tested can be tested.
It should be noted that, in this document, 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 a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.
Claims (7)
1. A dc voltage regulator testing apparatus, comprising:
the input module comprises an input interface and is used for inputting test voltage;
the adjusting circuit is used for connecting a pin of a direct-current voltage adjuster to be detected into the adjusting circuit, comprises a voltage regulating resistor and forms required output voltage by regulating the voltage regulating resistor;
and the output module comprises an output interface and is used for outputting the output voltage.
2. The dc voltage regulator testing apparatus of claim 1, further comprising an enable controller, wherein the enable controller is connected to an enable control terminal of the dc voltage regulator to be tested and provides an enable control signal.
3. The apparatus of claim 1, wherein the dc voltage regulator is connected to the input interface via a first inductor.
4. The testing device of claim 1, wherein the regulating circuit comprises a first regulating resistor and a second regulating resistor, one end of the first regulating resistor is connected to the DC voltage regulator to be tested, and the other end of the first regulating resistor is grounded; one end of the second voltage regulating resistor is connected to the direct current voltage regulator to be tested, and the other end of the second voltage regulating resistor is connected to the output module.
5. The dc voltage regulator testing apparatus of claim 1, wherein the output module further comprises a voltage status indication pin, the voltage status indication pin is connected to the dc voltage regulator to be tested through a resistor for indicating the status of the output voltage.
6. The apparatus of claim 1, wherein the dc voltage regulator is connected to the output interface via a second inductor.
7. The dc voltage regulator testing apparatus of claim 1, wherein the dc voltage regulator testing apparatus is further connected to a test circuit via the input interface or the output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221873264.4U CN218068169U (en) | 2022-07-19 | 2022-07-19 | Testing device for direct-current voltage regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221873264.4U CN218068169U (en) | 2022-07-19 | 2022-07-19 | Testing device for direct-current voltage regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218068169U true CN218068169U (en) | 2022-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221873264.4U Active CN218068169U (en) | 2022-07-19 | 2022-07-19 | Testing device for direct-current voltage regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218068169U (en) |
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2022
- 2022-07-19 CN CN202221873264.4U patent/CN218068169U/en active Active
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