CN114546022A - Power supply adjusting circuit, adjustable power supply system and method thereof - Google Patents
Power supply adjusting circuit, adjustable power supply system and method thereof Download PDFInfo
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- CN114546022A CN114546022A CN202011346574.6A CN202011346574A CN114546022A CN 114546022 A CN114546022 A CN 114546022A CN 202011346574 A CN202011346574 A CN 202011346574A CN 114546022 A CN114546022 A CN 114546022A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention provides a power supply adjusting circuit, an adjustable power supply system and a method thereof. The adjustable power supply system comprises a power module, a device power supply and a control circuit. The device power supply performs a power supply operation according to the operating voltage and provides a supply power to a Device Under Test (DUT). The control circuit outputs an adjusting signal to the power supply module according to the power utilization condition of the device to be tested. The power supply module generates a working voltage according to the adjustment signal, and the first power consumption generated by the device power supply is smaller than the preset power. Therefore, the device power supply can provide high voltage and high current output for the device to be tested.
Description
Technical Field
The present invention relates to a power supply device, and more particularly, to a power supply adjusting circuit, an adjustable power supply system and a method thereof.
Background
Referring to fig. 1, which is a schematic Power Supply diagram of a Device under test, most of a Device Power Supply (DPS) 10 in fig. 1 can bear maximum Power consumption of about 10W, however, in order to meet the high current requirement of the Device under test 12, the operating voltage VDD of the Device Power Supply 10 can be set to 10V, and the Device Power Supply 10 can stably provide Supply voltages of-1V to 7V and a Supply current of 0.7A to the Device under test 12. Although the device power supply 10 can withstand a certain power consumption, as the power consumption of the device power supply 10 increases, the temperature of the device power supply 10 also increases, so that the device power supply 10 must be cooled by a heat dissipation structure.
However, with the requirement of the dut 12 for high current, the device power supply 10 provides the dut 12 with the supply current 1A, and the device power supply 10 provides the dut 12 with the supply voltage 0V to 3.7V, so that the device power supply 10 can effectively dissipate heat through the existing heat dissipation structure. However, due to the limitation of the heat dissipation structure, the conventional device power supply 10 is obviously unable to simultaneously satisfy the high voltage or high current requirements of different devices under test.
Disclosure of Invention
The present invention provides a power adjusting circuit, an adjustable power supply system and a method thereof, which can automatically control the power supply status of a power supply of a device according to the power consumption status of the device under test.
The embodiment of the invention provides an adjustable power supply system, which comprises a power module, a device power supply and a control circuit. The device power supply is electrically connected with the power supply module, executes power supply operation according to the working voltage and provides a supply power to a Device Under Test (DUT). The control circuit outputs an adjusting signal according to the power utilization condition of the device to be tested, so that the power supply module generates working voltage according to the adjusting signal, and the first power consumption generated by the device power supply is smaller than the preset power.
The embodiment of the invention provides a power supply adjusting circuit which is suitable for carrying out power supply control on a power supply module and a device power supply, wherein the power supply module provides a working voltage for the device power supply, and the device power supply executes power supply operation according to the working voltage and provides a supply power for a device to be tested. The power supply adjusting circuit comprises a detection circuit and a control circuit. The detection circuit detects the power consumption condition of the device to be detected and outputs a power supply detection result. The control circuit is electrically connected with the detection circuit and outputs an adjusting signal to control the power supply module according to the power supply detection result, so that the power supply module generates working voltage according to the adjusting signal and first power consumption generated by the power supply of the device is smaller than preset power. The control circuit calculates a second power consumption of the device to be tested and a first power consumption of the device power supply according to the power detection result, and outputs an adjustment signal when the first power consumption is larger than the default power.
The embodiment of the invention provides an adjustable power supply method, which is suitable for a control circuit to carry out power supply control on a power module and a device power supply, and comprises the following steps that when the device power supply provides a power supply for a device to be detected, the control circuit detects the power utilization condition of the device to be detected, wherein the device power supply executes power supply operation according to the working voltage provided by the power module; and the control circuit outputs an adjusting signal according to the detection result, so that the power supply module generates a working voltage according to the adjusting signal, and the first power consumption generated by the power supply of the device is smaller than the preset power.
In summary, the power supply adjusting circuit, the adjustable power supply system and the method thereof according to the embodiments of the present invention can automatically and relatively adjust the power consumption of the device power supply according to the power consumption status of the device under test, so that the device power supply can stably provide high voltage and high current to meet the power consumption requirements of different devices under test, and can effectively reduce the heat dissipation burden.
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the invention.
Drawings
Fig. 1 is a schematic diagram of power supply to a device under test.
Fig. 2 is a functional block diagram of an adjustable power supply system according to an embodiment of the invention.
Fig. 3 is a flowchart of an adjustable power supply method according to an embodiment of the invention.
Fig. 4 is a functional block diagram of an adjustable power supply system according to an embodiment of the invention.
Fig. 5 is a flowchart of an adjustable power supply method according to an embodiment of the invention.
Detailed Description
The following is a description of embodiments of the present invention with reference to specific embodiments, and those skilled in the art will understand the advantages and effects of the present invention from the contents provided in the present specification. The invention is capable of other and different embodiments and its several details are capable of modification and various other changes, which can be made in various details within the specification and without departing from the spirit and scope of the invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the contents are not provided to limit the scope of the present invention.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are used primarily to distinguish one element from another element or from one signal to another signal. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.
The embodiment of the invention provides a Power Supply adjusting circuit, an adjustable Power Supply system and a method thereof, which can further know the Power consumption of a Device Power Supply (DPS) currently provided for a load end according to the detection result by detecting the Power consumption of the load end, and can actively reduce the Power consumption of the Device Power Supply through an adjusting mechanism, thereby enabling the work of the Device Power Supply to be stable and reducing the heat dissipation burden, and the Device Power Supply can provide high voltage output and high current output to meet the Power consumption requirements of various devices to be tested.
[ example of Adjustable Power supply System ]
Referring to fig. 2, fig. 2 is a functional block diagram of an adjustable power supply system according to an embodiment of the present invention. The adjustable power supply system 2 of the present embodiment includes, but is not limited to, a power module 20, a device power supply 22, a control circuit 24, and a detection circuit 26. The power aspects of the adjustable power supply system 2 described herein are illustrated, but not limited to, a Device Under Test (DUT) in a test system. The power module 20 is electrically connected to the device power supply 22, the device power supply 22 is electrically connected to the device under test 3, the detection circuit 26 is electrically connected to the device under test 3, and the control circuit 24 is electrically connected to the detection circuit 26 and the power module 20.
Further, the power module 20 can provide an operating voltage VDD to the device power supply 22, and the device power supply 22 performs power supply operation according to the operating voltage VDD. The device power supply 22 can provide different power supplies according to the power supply requirements of different devices under test 3. For example, the supply power provided by the device power supply 22 may be set or operated to provide different supply voltages Vo or supply currents Io for the device under test 3. The specific power supply structure of the device power supply 22 is well known to those skilled in the art and therefore will not be described in detail herein.
The control circuit 24 relatively outputs an adjustment signal to the power module 20 according to the power consumption condition of the device under test 3, wherein the adjustment signal is used for adjusting the operating voltage VDD output by the power module 20 to the device power supply 22. For example, assume that the power consumption of the device power supply 22 is a first power consumption, the power consumption of the device under test 3 is a second power consumption, and the sum of the first power consumption and the second power consumption is equal to the total power consumption, which is the operating voltage of the device power supply 22 multiplied by VDD to the supply current Io provided by the device power supply 22 to the device under test 3. Therefore, when the total power consumption is a fixed value, the first power consumption becomes relatively large when the second power consumption becomes small, i.e., the device under test 3 is lightly loaded. However, the excessive first power consumption may cause the device power supply 22 to increase in temperature or exceed the tolerable power, so that the control circuit 24 in this embodiment can adjust the power consumption of the device power supply 22 to be within a reasonable safety range smaller than the predetermined power by adjusting the signal, for example, the default power is the power at which the device power supply 22 can operate stably, but the invention is not limited thereto.
Specifically, when the control circuit 24 knows that the power consumption of the device power supply 22 is greater than the default power according to the power consumption status of the device 3 to be tested, the control circuit 24 outputs an adjustment signal to the power module 20 accordingly, so that the power module 20 adjusts the working voltage VDD provided to the device power supply 22 according to the adjustment signal, thereby enabling the adjusted working voltage VDD to enable the power consumption of the device power supply 22 to be less than the preset power. In addition, when the control circuit 24 knows that the power consumption of the device power supply 22 is less than the default power according to the power consumption condition of the device under test 3, the control circuit 24 will not output the adjustment signal, i.e. the device power supply 22 can normally operate at this time.
In one embodiment, the control circuit 24 can obtain the power consumption condition of the device under test 3 through the detection circuit 26, wherein the power consumption condition refers to the power consumption, voltage or current of the device under test 3 itself. For example, the control circuit 24 can obtain the power supply of the device under test 3 through the detection circuit 26, and the control circuit 24 can obtain the power consumption of the device under test 3 according to the power supply calculation. The detection circuit 26 may be, for example, various combinations of voltage detectors or current detectors.
For example, the control circuit 24 may know the power supply of the device under test 3 in the following ways. When the control circuit 24 knows the supply current Io provided by the device power supply 22 to the device under test 3, the control circuit 24 can detect the supply voltage Vo provided by the device power supply 22 to the device under test 3 through the voltage detector in the detection circuit 26. Alternatively, when the control circuit 24 knows the supply voltage Vo supplied by the device power supply 22 to the device under test 3, the control circuit 24 may detect the supply current Io supplied by the device power supply 22 to the device under test 3 through a current detector in the detection circuit 26. Alternatively, the control circuit 24 may detect the supply voltage Vo and the supply current Io provided by the device power supply 22 to the device under test 3 through a voltage detector and a current detector of the detection circuit 26, respectively. Finally, the control circuit 24 can obtain the power consumption of the device under test 3 according to the multiplied result of the supply voltage Vo and the supply current Io.
Therefore, when the control circuit 24 knows the power detection result of the dut 3, the first power consumption of the device power supply 22 and the second power consumption of the dut 3 can be calculated accordingly. The first power consumption is calculated by, for example, subtracting the supply voltage Vo provided by the device power supply 22 to the device under test 3 from the working voltage VDD provided by the device power supply 22 to obtain a voltage difference, and multiplying the voltage difference by the supply current Io provided by the device power supply 22 to the device under test 3 to obtain the first power consumption, wherein the working voltage VDD is greater than the supply voltage Vo in practice. The second power consumption is calculated by multiplying the supply voltage Vo supplied from the device power supply 22 to the device under test 3 by the supply current Io. The calculation of the first power consumption and the second power consumption according to the present invention is not limited to the above-mentioned examples.
In addition, in an embodiment, the control circuit 24 and the detection circuit 26 may be used as power adjustment circuits for the power module 20 and the device power supply 22, and the control circuit 24 adjusts the power provided by the power module 20 to the device power supply 22 according to the detection result of the detection circuit 26, so that the power consumption of the device power supply 22 can be relatively maintained within the predetermined power range for normal operation according to the power consumption condition of the device 3.
[ example of Adjustable Power supply method ]
Please refer to fig. 3. Fig. 3 is a flowchart of an adjustable power supply method according to an embodiment of the invention. The flowchart shown in fig. 3 is illustrated in the architecture of fig. 2, but is not limited thereto. The flow shown in fig. 3 includes the following steps.
In step S301, the dut 3 is detected. The control circuit 24 controls the detection circuit 26 to detect the power consumption condition of the device under test 3, so as to obtain the supply voltage Vo or the supply current provided by the device power supply 22 to the device under test 3.
In step S303, the power consumption of the dut 3 is calculated. The control circuit 24 can calculate the current power consumption of the device under test 3 according to the detection result of step S301.
In step S305, it is determined whether the power consumption of the device power supply 22 is less than a predetermined power. When the control circuit 24 knows the power consumption of the device 3 to be tested, the power consumption of the device power supply 22 can be further calculated according to the power consumption of the device to be tested, and the power consumption of the device power supply 22 is compared with the preset power to know whether the power consumption of the device power supply 22 is less than the preset power.
In step S307, an adjustment signal is output. When the determination in step S305 is negative, which represents that the power consumption of the device power supply 22 is greater than the preset power, the control circuit 24 outputs an adjustment signal to the power module 20, so that the power module 20 adjusts the working voltage VDD provided to the device power supply 22 according to the adjustment signal, for example, the working voltage is increased or decreased, and finally the power consumption of the device power supply 22 according to the adjusted working voltage VDD is smaller than the preset power. When the step S305 determines yes, the process returns to the step S301 to continue.
In the above embodiment, the control circuit 24 can know whether the power consumption of the device power supply 22 is less than the default power according to the detection result of the detection circuit 26, and when the power consumption of the device power supply 22 is greater than the default power, the control circuit 24 outputs the adjustment signal to reduce the power consumption of the device power supply 22 to be less than the predetermined power through the power module 20.
It is noted that, in another embodiment, the control circuit 24 may also adjust the power consumption of the device power supply 22 by using a table lookup. Examples are as follows.
The following table provides the corresponding conditions of the detection voltage Vd and the working voltage VDD, wherein the detection voltage Vd is the detection result of the detection circuit 26 detecting the supply voltage Vo of the device under test 3, and the working voltage VDD is the voltage used by the device power supply 22 for operation, and meanwhile, it is assumed that the device power supply 22 provides a fixed 1.2A as the supply current Io for the device under test 3.
| Vd | 0V | 1V | 2V | 3V | 4V | 5V | 6V | 7V |
| VDD | 3V | 4V | 5V | 6V | 7V | 8V | 9V | 10V |
| Vd | 8V | 9V | 10V | 11V | 12V | 13V | 14V | 15V |
| VDD | 11V | 12V | 13V | 14V | 15V | 16V | 17V | 18V |
Watch 1
In the first table, when Vd is 0V, VDD is 3V, when Vd is 1V, VDD is 4V … …, and when Vd is 15V, VDD is 18V. This table one may be stored in control circuit 24 for use in table lookup.
For example, when the control circuit 24 detects that the detection voltage Vd is 0V through the detection circuit 26, the control circuit 24 outputs an adjustment signal to the power module 20 after looking up the table, and the adjustment signal is used to control the power module 20 to adjust the supply voltage VDD outputted to the device power supply 22 to be 3V.
When the control circuit 24 detects that the detection voltage Vd is 1V through the detection circuit 26, the control circuit 24 outputs an adjustment signal to the power module 20 after looking up the table, and the adjustment signal is used to control the power module 20 to adjust the supply voltage VDD outputted to the device power supply 22 to be 4V.
And detecting results of other detection voltages Vd, and so on. That is, the control circuit 24 can effectively control the power consumption of the device power supply 22 to be less than a predetermined power, for example, 3W, by looking up the table, and the device power supply 22 can work normally and stably when meeting the requirements of high voltage and high current output by cooperating with the heat dissipation design of the device power supply 22.
Therefore, by means of the design of table one, when the supply voltage provided by the device power supply 22 to the device under test 3 is changed from a first supply voltage to a second supply voltage, the control circuit 24 correspondingly outputs the adjustment signal to control the power module 20 to change the working voltage provided by the device power supply 24 from a first working voltage to a second working voltage. And when the supply voltage provided by the device power supply 22 to the device under test 3 is converted from the second supply voltage to the first supply voltage, the control circuit 24 relatively outputs the adjustment signal to control the power module 20 to convert the working voltage provided by the device power supply 22 from the second working voltage to the first working voltage, wherein the second supply voltage is greater than the first supply voltage and the second working voltage is greater than the first working voltage, and the difference between the first supply voltage and the first working voltage is the same as the difference between the second supply voltage and the second working voltage. The first table is used to describe how the control circuit 24 controls the operating voltage VDD output by the power module 20 through table lookup, but the voltages in the first table are only for illustration and the invention is not limited thereto.
[ Another embodiment of an adjustable power supply system with temperature detection ]
Please refer to fig. 4. Fig. 4 is a functional block diagram of an adjustable power supply system according to an embodiment of the invention. The adjustable power supply system 4 shown in fig. 4 is further provided with a temperature detector 28 compared to the adjustable power supply system 2 shown in fig. 2, and the description is provided for the temperature detector 28, and the related functional operations of the remaining components can refer to the foregoing description.
The temperature detector 28 is electrically connected to the device power supply 22 and the control circuit 24. The temperature detector 28 is used for detecting the operating temperature of the device power supply 22 and outputting a temperature detection result to the control circuit 24. When the control circuit 24 receives the temperature detection result of the temperature detector 28, the control circuit 24 can obtain the operating temperature of the device power supply 22, and further determine whether the operating temperature of the device power supply 22 exceeds the default temperature.
When the operating temperature of the device power supply 22 exceeds the default temperature, the control circuit 24 performs a cooling operation on the device power supply 22 through the power module 20. For example, the control circuit 24 may control the power module 20 to decrease the working voltage output to the device power supply 22, so that the device power supply 22 can achieve the temperature reduction effect when the working voltage is decreased. The manner of adjusting and reducing the operating voltage is, for example, reducing 1V each time, but the invention is not limited thereto.
[ Another embodiment of an adjustable power supply method ]
Please refer to fig. 5. Fig. 5 is a flowchart of an adjustable power supply method according to an embodiment of the invention. The flowchart shown in fig. 5 is illustrated in the architecture of fig. 4, but is not limited thereto. The flow shown in fig. 5 includes the following steps.
In step S501, the device under test 3 is detected.
In step S503, the power consumption of the dut 3 is calculated.
In step S505, it is determined whether the power consumption of the device power supply 22 is less than a predetermined power.
In step S507, an adjustment signal is output. When the determination in step S505 is no, the control circuit 24 outputs an adjustment signal to the power module 20, and the power module 20 adjusts the operating voltage provided to the device power supply 22 according to the adjustment signal. If yes in step S505, step S509 is executed.
In step S509, the temperature of the device power supply 22 is detected. The control circuit 24 detects the temperature condition of the device power supply 22 via the temperature detector 28.
In step S511, it is determined whether the operating temperature of the device power supply 22 is less than the default temperature. According to the detection result of step S509, the control circuit 24 can know the operating temperature of the device power supply 22, and compare the operating temperature with the default temperature.
In step S513, the operating voltage is decreased. If the determination in step S511 is negative, it means that the current operating temperature of the device power supply 22 exceeds the default temperature, so the control circuit 24 will perform a cooling operation on the device power supply 22. For example, the control circuit 24 controls the power module 20 to decrease the operating voltage VDDD, so that the operating temperature of the device power supply 22 decreases accordingly.
When the determination in step S511 is yes, step S501 is performed.
In an embodiment, the control circuit 101 may be, for example, one or any combination of an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a system on a chip (SOC), and may cooperate with other related circuit components and cooperate with firmware to implement the above-described functional operations.
[ advantageous effects of the embodiments ]
The adjustable power supply system and the method thereof provided by the invention can control the power consumption of the device power supply per se within the preset power by actively detecting the power consumption condition of the device to be tested and correspondingly adjusting the working voltage output by the power module, thereby enabling the device power supply to respectively output high voltage, high current or other power supplies according to the power consumption requirements of different devices to be tested, ensuring the device power supply to work stably and normally and lightening the heat dissipation burden.
The above-mentioned contents are only the preferred and feasible embodiments of the present invention, and are not limited to the claims of the present invention, so that all the technical changes which are made by using the contents of the description of the present invention and the drawings are included in the claims of the present invention.
Claims (16)
1. An adjustable power supply system, comprising:
the power supply module provides a working voltage;
the device power supply is electrically connected with the power module, performs power supply operation according to the working voltage and provides a supply power to a device to be tested; and
and the control circuit outputs an adjusting signal to control the power supply module according to the power utilization condition of the device to be tested, so that the power supply module generates the working voltage according to the adjusting signal, and a first power consumption generated by a power supply of the device is smaller than a preset power.
2. The adjustable power supply system according to claim 1, further comprising a detection circuit electrically connected to the control circuit, the detection circuit detecting a power consumption status of the dut and outputting a power detection result to the control circuit.
3. The adjustable power supply system according to claim 2, wherein the control circuit calculates a second power consumption of the device under test and the first power consumption of the device power supply according to the power detection result, and outputs the adjustment signal when the first power consumption is greater than the default power, wherein the detection circuit is a voltage detector or a current detector.
4. The adjustable power supply system according to claim 2, wherein the adjustment signal is used to make the first power consumption less than a default power after the power module provides the working voltage of the device power supply, and the supply power provided by the device power supply comprises a supply voltage and a supply current.
5. The adjustable power supply system according to claim 4, wherein when the device power supply provides a constant supply current to the device under test, when the supply voltage provided by the device power supply to the device under test is changed from a first supply voltage to a second supply voltage, the adjustment signal outputted by the control circuit controls the power module to change the operating voltage provided by the device power supply from a first operating voltage to a second operating voltage, and when the supply voltage provided by the device power supply to the device under test is changed from the second supply voltage to the first supply voltage, the adjustment signal outputted by the control circuit controls the power module to change the operating voltage provided by the device power supply from the second operating voltage to the first operating voltage, wherein the second supply voltage is greater than the first supply voltage and the second operating voltage is greater than the first operating voltage.
6. The adjustable power supply system according to claim 5, wherein the difference between the first supply voltage and the first operating voltage is the same as the difference between the second supply voltage and the second operating voltage.
7. The adjustable power supply system according to claim 1, further comprising a temperature detector electrically connected to the control circuit, wherein the control circuit controls the power module to lower the operating voltage when the temperature detector detects that the temperature of the power supply exceeds a predetermined temperature.
8. A power supply regulating circuit is suitable for carrying out power supply control on a power supply module and a device power supply, the power supply module provides a working voltage for the device power supply, the device power supply executes power supply operation according to the working voltage and provides a supply power for a device to be tested, and the power supply regulating circuit is characterized by comprising:
the detection circuit detects the power consumption condition of the device to be detected and outputs a power supply detection result; and
the control circuit is electrically connected with the detection circuit and outputs an adjusting signal to control the power supply module according to the power supply detection result, so that the power supply module generates the working voltage according to the adjusting signal and a first power consumption generated by the power supply of the device is smaller than a preset power;
the control circuit calculates a second power consumption of the device to be tested and the first power consumption of the device power supply according to the power detection result, and outputs the adjustment signal when the first power consumption is larger than the default power.
9. The power regulation circuit of claim 8 wherein the regulation signal is configured to cause the first power consumption to be less than the predetermined power after the power module provides the operating voltage of the device power supply.
10. The power regulation circuit of claim 8 further comprising a temperature detector electrically connected to the control circuit, wherein the control circuit controls the power module to reduce the operating voltage when the temperature detector detects that the temperature of the device power supply exceeds a predetermined temperature.
11. An adjustable power supply method is suitable for a control circuit to control power of a power module and a device power supply, and is characterized by comprising the following steps:
when the device power supply provides a supply power for the device to be tested, the control circuit detects a power utilization condition of the device to be tested, wherein the device power supply executes power supply operation according to a working voltage provided by the power module; and
the control circuit outputs an adjusting signal to control the power supply module according to the detection result, so that the power supply module generates the working voltage according to the adjusting signal, and a first power consumption generated by the power supply of the device is smaller than a preset power.
12. The adjustable power supply method as claimed in claim 11, wherein the control circuit calculates a second power consumption of the dut and the first power consumption of the device power supply according to the detection result, and outputs the adjustment signal when the first power consumption is greater than the default power.
13. The method as claimed in claim 11, wherein the adjusting signal is used to increase or decrease the operating voltage of the device power supply provided by the power module, such that the first power consumption is less than the default power, and the supply power provided by the device power supply comprises a supply voltage and a supply current.
14. The adjustable power supply method as claimed in claim 13, wherein when the device power supply provides a constant supply current to the device under test, when the supply voltage provided by the device power supply to the device under test is changed from a first supply voltage to a second supply voltage, the adjustment signal outputted by the control circuit controls the power module to change the operating voltage provided by the device power supply from a first operating voltage to a second operating voltage, and when the supply voltage provided by the device power supply to the device under test is changed from the second supply voltage to the first supply voltage, the adjustment signal outputted by the control circuit controls the power module to change the operating voltage provided by the device power supply from the second operating voltage to the first operating voltage, wherein the second supply voltage is greater than the first supply voltage and the second operating voltage is greater than the first operating voltage.
15. The adjustable power supply method according to claim 14, wherein the difference between the first supply voltage and the first operating voltage is the same as the difference between the second supply voltage and the second operating voltage.
16. The adjustable power supply method according to claim 11, further comprising:
detecting the temperature of the power supply of the device;
when the temperature of the power supply of the device exceeds a default temperature, the control circuit controls the power module to reduce the working voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011346574.6A CN114546022A (en) | 2020-11-26 | 2020-11-26 | Power supply adjusting circuit, adjustable power supply system and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011346574.6A CN114546022A (en) | 2020-11-26 | 2020-11-26 | Power supply adjusting circuit, adjustable power supply system and method thereof |
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| CN114546022A true CN114546022A (en) | 2022-05-27 |
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|---|---|---|---|
| CN202011346574.6A Pending CN114546022A (en) | 2020-11-26 | 2020-11-26 | Power supply adjusting circuit, adjustable power supply system and method thereof |
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| Country | Link |
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| CN (1) | CN114546022A (en) |
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2020
- 2020-11-26 CN CN202011346574.6A patent/CN114546022A/en active Pending
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