CN115774483A

CN115774483A - Power supply control circuit and server

Info

Publication number: CN115774483A
Application number: CN202211500022.5A
Authority: CN
Inventors: 刘康毅
Original assignee: XFusion Digital Technologies Co Ltd
Current assignee: XFusion Digital Technologies Co Ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-03-10

Abstract

The application provides a power supply control circuit and server, this power supply control circuit includes: the switching circuit is respectively connected with the voltage division circuit and the control circuit, and is also used for being connected with a power supply and a load; the control circuit is also connected with the voltage division circuit; the control circuit is used for collecting the output voltage of the voltage division circuit and controlling the switch circuit to be switched on or switched off according to the output voltage. In the power supply control circuit, the control circuit can identify whether the switch circuit has a fault through the output voltage of the voltage division circuit so as to control the switch circuit to be switched on or switched off, and the working stability of the electronic equipment is good.

Description

Power supply control circuit and server

Technical Field

The application relates to the technical field of electronics, in particular to a power supply control circuit and a server.

Background

A Metal-Oxide-Semiconductor Field-Effect Transistor (MOS) Transistor may be used in a power supply circuit of an electronic device. When the MOS tube is powered on and the output voltage of the MOS tube is normal, a power supply circuit of the electronic equipment can be conducted, so that the electronic equipment is powered on. For example, the electronic device may be a server or the like.

In the related art, the electronic device cannot recognize whether the output voltage of the MOS transistor is abnormal. If the output voltage of the MOS transistor is abnormal, the electronic device cannot be powered on or the electronic device is interrupted from service, so that the working stability of the electronic device is poor.

Disclosure of Invention

The application provides a power supply control circuit and server, power supply control circuit can be when the switching circuit is unusual, and the disconnection of control switching circuit has avoided electronic equipment to break off the service suddenly when unable discernment switching circuit is unusual for electronic equipment's job stabilization nature is better.

In a first aspect, the present application provides a power supply control circuit comprising a switching circuit, a voltage divider circuit, and a control circuit, wherein,

the switch circuit is respectively connected with the voltage division circuit and the control circuit, and is also used for being connected with a power supply and a load; the control circuit is also connected with the voltage division circuit;

the control circuit is used for collecting the output voltage of the voltage division circuit and controlling the switch circuit to be switched on or switched off according to the output voltage.

In the above technical solution, the control circuit may control the switching circuit to be turned on or off according to the output voltage of the voltage dividing circuit. Therefore, when the output voltage of the voltage division circuit indicates that the switch circuit is abnormal, the switch circuit is controlled to be switched off, so that the phenomenon that the electronic equipment is suddenly interrupted when the abnormality of the switch circuit cannot be identified is avoided, and the working stability of the electronic equipment is better.

In one possible implementation manner, the control circuit includes a voltage sampling port and a controller, wherein,

the voltage sampling port is used for sampling the voltage output by the output end of the voltage division circuit to obtain the output voltage;

the controller is used for controlling the switch circuit to be switched on or switched off according to the output voltage in the detection time interval; the detection time interval is a time interval within a preset time length after the switch circuit is controlled to be switched on, or the detection time interval is a time interval within the preset time length before the current moment.

In the technical scheme, a voltage sampling port in the control circuit can acquire the output voltage of the voltage division circuit; the controller in the control circuit can control the switch circuit to be switched on or switched off according to the output voltage of the voltage division circuit. Through the technical scheme, the purpose of controlling the on or off of the switch circuit according to the output voltage of the voltage division circuit can be realized.

In one possible implementation, the controller is specifically configured to:

if the abnormal output voltage does not exist in the detection time period, controlling the switch circuit to be continuously conducted, wherein the abnormal output voltage is not in a preset voltage range;

and if the abnormal output voltage exists in the detection time period, acquiring the duration of the abnormal output voltage, and controlling the switch circuit to be switched on or switched off according to the duration.

In the above technical scheme, if there is no abnormal output voltage in the detection period, the control circuit can control the switch circuit to continue conducting; if the abnormal output voltage exists in the detection time period, the control circuit can control the switch circuit to be continuously switched on or switched off according to the duration of the abnormal output voltage. Therefore, the purpose of controlling the switch circuit to be switched on or switched off according to the output voltage is achieved.

In a possible implementation manner, the control circuit further includes a memory, and the controller is further configured to:

and acquiring the preset voltage range in the memory.

In the above technical solution, the memory in the control circuit may store the preset voltage range, so that the control circuit may determine whether the output voltage of the switching circuit is abnormal according to the preset voltage range.

In one possible implementation, the controlling the switching circuit to be turned on or off according to the duration includes:

if the duration is less than or equal to a first threshold, controlling the switching circuit to be continuously conducted, and generating first alarm information, wherein the first alarm information is used for indicating that the switching circuit is abnormal;

and if the duration is greater than the first threshold, controlling the switch circuit to be switched off.

In the above technical scheme, when the duration of the abnormal output voltage is less than or equal to the first threshold, the control circuit may control the switching circuit to be continuously turned on and may generate the first warning information to indicate that the switching circuit needs to be maintained.

In one possible implementation, the control circuit is further configured to:

and sending the first alarm information to a baseboard management controller BMC.

In the above technical solution, the control circuit may send the first alarm information to the BMC, so that the BMC may display whether the switch circuit is abnormal.

In one possible implementation, the control circuit is further configured to:

receiving a power-on instruction;

and controlling the switch circuit to be conducted according to the power-on instruction.

In the above technical solution, the control circuit may power on the switch circuit according to the power-on instruction, so as to turn on the switch circuit.

In one possible implementation, the switching circuit is a MOS transistor, wherein,

the grid electrode of the MOS tube is connected with the control circuit;

the source level of the MOS tube is connected with the voltage division circuit;

and the drain electrode of the MOS switch is used for being connected with the power supply.

In the technical scheme, the switch circuit can be an MOS tube, and the purpose of controlling the load electrification in the electronic equipment through the MOS tube is realized.

In a possible implementation manner, the voltage dividing circuit includes a voltage dividing resistor, wherein a resistance value of the voltage dividing resistor is determined according to an output voltage of the switching circuit and a maximum allowable voltage of a control circuit, and a voltage output by the voltage dividing resistor to the control circuit is smaller than or equal to the maximum allowable voltage of the control circuit.

In the technical scheme, the voltage collected by the control circuit can be reduced through the voltage dividing resistor, so that the purpose of determining the output voltage of the switching circuit according to the output voltage of the voltage dividing circuit is achieved.

In a second aspect, the present application provides a server, including a load and the power supply control circuit of any one of the first aspect, wherein the load is connected to a switch circuit in the power supply control circuit.

In the above technical scheme, after the switching circuit is turned on, the control circuit can acquire the output voltage of the voltage dividing circuit and can determine the output voltage of the switching circuit according to the output voltage of the voltage dividing circuit. If the output voltage of the switching circuit is normal in the detection time period, the control circuit can control the switching circuit to be continuously conducted; if the abnormal output voltage exists in the switch circuit within the detection time period and the duration of the abnormal output voltage is less than or equal to the first threshold, controlling the switch circuit to be continuously conducted; and if the abnormal output voltage exists in the switch circuit within the detection time period and the duration of the abnormal output voltage is greater than the first threshold value, controlling the switch circuit to be switched off. Through the power supply control circuit, the switching circuit can be controlled to be switched off when the switching circuit is abnormal, so that the phenomenon that the electronic equipment is suddenly interrupted in service when the switching circuit is abnormal cannot be identified is avoided, and the working stability of the electronic equipment is good.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application;

fig. 2 is a power supply control circuit provided in the present application;

fig. 3 is a schematic structural diagram of a power supply control circuit according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another power supply control circuit provided in the embodiment of the present application;

fig. 5A is a schematic diagram of an output voltage of a switching circuit according to an embodiment of the disclosure;

FIG. 5B is a schematic diagram of an output voltage of another switching circuit according to an embodiment of the present disclosure;

FIG. 6A is a schematic diagram illustrating an output voltage of another switch circuit according to an embodiment of the present disclosure;

FIG. 6B is a schematic diagram illustrating an output voltage of another switch circuit according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of another power supply control circuit according to an embodiment of the present application;

fig. 8 is a schematic diagram of an output voltage of a switching circuit without an abnormal output voltage according to an embodiment of the present application;

FIG. 9 is a schematic diagram of an output voltage of a switching circuit with abnormal output voltage according to an embodiment of the present application;

FIG. 10 is a schematic diagram illustrating an output voltage of another switching circuit with abnormal output voltage according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of another power supply control circuit according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a server provided in the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

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 one of 8230, and" comprising 8230does not exclude the presence of additional like elements in a process, method, article, or apparatus comprising the element.

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application. Referring to fig. 1, a drain (D) electrode of the MOS transistor may be connected to a power supply, a source (S) electrode of the MOS transistor may be connected to a load, and a gate (G) electrode of the MOS transistor may be connected to a Complex Programmable Logic Device (CPLD).

The load may be an electronic component in an electronic device. For example, the load may be a network card in the electronic device.

The CPLD can be used for controlling the MOS tube to be switched on or switched off. For example, if the CPLD outputs a high-level signal to the gate of the MOS, the MOS transistor is turned on; if the CPLD outputs a low level signal to the grid electrode of the MOS, the MOS tube is disconnected.

The MOS tube is connected with a power supply, and after the CPLD controls the conduction of the MOS tube, the MOS tube can supply power to the load so as to electrify the load; after the CPLD controls the MOS tube to be disconnected, the MOS tube cannot supply power to the load, so that the load cannot work normally.

However, if the MOS transistor has a fault, the output voltage of the MOS transistor may be abnormal when the CPLD controls the MOS transistor to conduct. For example, the output voltage of the MOS transistor may have jitter or jump. When the output voltage of the MOS transistor is abnormal, the load cannot be powered on or the load is interrupted from service.

In the related art, on one hand, before the MOS transistors leave the factory, the manufacturer may perform sampling detection on the MOS transistors in the same batch to determine whether the MOS transistors in the batch have a fault. However, all MOS transistors cannot be covered by sampling detection, and there is no guarantee that there is no failure in MOS transistors used in electronic equipment. On the other hand, after the MOS transistor is used in an electronic device, the electronic device cannot recognize whether the MOS transistor has a failure. If the MOS transistor has a fault, after the MOS transistor is powered on, the related load may not be powered on or the service may be interrupted, so that the working stability of the electronic device is poor.

In view of this, the present application provides a power supply control circuit, which can identify a MOS transistor in an electronic device to determine whether the MOS transistor has a fault. Next, the power supply control circuit will be described with reference to fig. 2.

Fig. 2 is a power supply control circuit provided in the present application. Referring to fig. 2, the power supply control circuit may include: switch circuit, bleeder circuit and control circuit.

The switching circuit may be an electronic component on a load power supply circuit in the electronic device. When the switch circuit is conducted, the power supply circuit of the load can be conducted; when the switching circuit is open, the supply circuit of the load may be open. For example, the switching circuit may be a MOS transistor.

The control circuit can control the electronic components which are switched on or switched off by the switch circuit. For example, the control circuit may be a CPLD.

The voltage divider circuit may include a plurality of resistors arranged in series.

In the power supply control circuit, one side of the switch circuit can be connected with the control circuit, and the other side of the switch circuit can be connected with the voltage division circuit. One side of the voltage division circuit can be connected with the switch circuit, and the other side of the voltage division circuit can be connected with the control circuit.

The switch circuit may be connected to a load of the electronic device on the side connected to the voltage divider circuit. Through the arrangement, the control circuit can monitor the voltage input to the load by the switching circuit through the voltage division circuit.

In the above power supply control circuit, the control circuit may determine whether the switching circuit has a fault according to a voltage input by the switching circuit to the load. If the switch circuit has a fault, the control circuit can generate a fault warning, so that a worker can maintain or replace the switch circuit according to the fault warning, the situation that the load cannot be powered on or the service is interrupted is avoided, and the working stability of the electronic equipment is good.

The technical means shown in the present application will be described in detail below with reference to specific examples. It should be noted that the following specific embodiments may exist alone or in combination with each other, and the description of the same or similar contents is not repeated in different embodiments.

Fig. 3 is a schematic structural diagram of a power supply control circuit according to an embodiment of the present disclosure. Referring to fig. 3, the power supply control circuit may include a switching circuit, a voltage dividing circuit, and a control circuit.

The switching circuit is respectively connected with the voltage division circuit and the control circuit, and is also used for being connected with a power supply and a load; the control circuit is also connected with the voltage division circuit.

The switching circuit may be an electronic component on the load supply circuit. When the switch circuit is turned on, the power supply circuit of the load can be turned on.

For example, the switching circuit may be a MOS transistor. When the MOS tube is conducted, a power supply circuit of the load is conducted; when the MOS tube is disconnected, the power supply circuit of the load is disconnected.

The control circuit may be adapted to control the switching circuit to be switched on or off.

For example, the control circuit may be a CPLD. When the CPLD outputs a high-level signal to the switch circuit, the switch circuit can be triggered to be conducted; when the CPLD outputs a low level signal to the switch circuit, the switch circuit can be triggered to be switched off.

In this embodiment, the control circuit is configured to collect an output voltage of the voltage divider circuit, and control the switching circuit to be turned on or off according to the output voltage.

It should be noted that the control circuit may collect an output voltage of any one of the resistors in the voltage divider circuit, and control the switching circuit to be turned on or off according to the output voltage.

One end of the voltage division circuit is connected with the switch circuit, and the other end of the voltage division circuit is connected with the control circuit. After the switching circuit is switched on, the control circuit can acquire the output voltage of the voltage division circuit and can determine whether the output voltage of the switching circuit is normal or not according to the output voltage of the voltage division circuit.

In this embodiment, it is assumed that the resistance of the switch circuit is 0 Ω. When the output voltage of the switching circuit is equal to the voltage provided by the power supply, the control circuit can determine that the output of the switching circuit is normal; when the output voltage of the switching circuit is not equal to the voltage provided by the power supply, the control circuit may determine that the output of the switching circuit is abnormal.

In a possible implementation manner, if the control circuit determines that the output of the switching circuit is normal according to the output voltage of the voltage division circuit, the control circuit may control the switching circuit to continue to be turned on.

For example, assuming that the voltage divider circuit includes two resistors connected in series, the resistance values of the two resistors may be 2 Ω and 10 Ω in sequence according to the flowing direction of the current. The control circuit can collect the output voltage of the resistor with the resistance of 2 omega.

If the voltage provided by the power supply is 12V, the control circuit can determine that the output of the switch circuit is normal and can control the switch circuit to be continuously conducted when the output voltage of the voltage division circuit collected by the control circuit is 2V and the output voltage of the switch circuit is equal to 12V.

In another possible implementation manner, if the control circuit determines that the output of the switching circuit is abnormal according to the output voltage of the voltage division circuit, the control circuit may control the switching circuit to be turned off.

If the voltage provided by the power supply is 12V, the control circuit can determine that the output of the switching circuit is abnormal and can control the switching circuit to be switched off when the output voltage of the voltage division circuit acquired by the control circuit is not 2V and the output voltage of the switching circuit is not equal to 12V.

In the power supply control circuit provided in this embodiment, after the switch circuit is turned on, the control circuit may determine whether the output of the switch circuit is normal according to the output voltage of the voltage divider circuit. If the output of the switching circuit is normal, the control circuit can control the switching circuit to be continuously conducted; if the output of the switch circuit is abnormal, the control circuit can control the switch circuit to be switched off. Through the power supply control circuit, the switching circuit can be controlled to be switched off when the switching circuit is abnormal, so that the phenomenon that the electronic equipment is suddenly interrupted in service when the switching circuit is abnormal cannot be identified is avoided, and the working stability of the electronic equipment is good.

On the basis of the embodiment of fig. 3, the control circuit may further include a voltage sampling port and a controller. The above-described case will be described with reference to fig. 4.

Fig. 4 is a schematic structural diagram of another power supply control circuit according to an embodiment of the present application. Referring to fig. 4, on the basis of fig. 3, a voltage sampling port and a controller may be included in the control circuit.

The voltage sampling port is used for sampling the voltage output by the output end of the voltage division circuit to obtain output voltage; the controller is used for controlling the switch circuit to be switched on or switched off according to the output voltage in the detection time interval; the detection time interval is a time interval within a preset time length after the control switch circuit is switched on, or the detection time interval is a time interval within the preset time length before the current moment.

The voltage sampling port may be an input interface of the control circuit. For example, the control circuit may be a CPLD, and the voltage sampling port may be an input pin of the CPLD.

The controller may be a control unit in the control circuit. The controller may be configured to control the switching circuit to be turned on or off.

In this embodiment, the controller may determine the output voltage of the switching circuit according to the output voltage of the voltage divider circuit. If the output voltage of the switching circuit is normal, the controller can control the switching circuit to be continuously conducted; if the output voltage of the switch circuit is abnormal, the controller can control the switch circuit to be switched off.

It should be noted that the detection time period may be a time period within a preset time period after the control switch circuit is turned on, or the detection time period may be a time period within a preset time period before the current time. According to different detection periods, the control of the switch circuit to be switched on or switched off in the embodiment at least comprises the following two conditions:

in case 1, the detection period is a period within a preset time after the control switch circuit is turned on.

And 2, detecting the time interval, wherein the time interval is a time interval within a preset time length before the current time.

Next, the above case 1 will be described with reference to fig. 5A to 5B.

In this case, the output voltage when the switch circuit is powered on can be detected.

Assume that the voltage supplied by the power supply is 12V. If the output voltage of the switching circuit is 12V in the detection time period, the controller can determine that the output voltage of the switching circuit is normal and can control the switching circuit to be continuously conducted; if the output voltage of the switching circuit is not equal to 12V in the detection period, the controller may determine that the output voltage of the switching circuit is abnormal, and may control the switching circuit to be turned off.

It should be noted that, a specific implementation manner of determining the output voltage of the switching circuit according to the output voltage of the voltage divider circuit may refer to the embodiment in fig. 3, and details are not described here again.

Referring to fig. 5A, fig. 5A is a schematic diagram of an output voltage of a switching circuit according to an embodiment of the present disclosure. As shown in FIG. 5A, t ₁ The time may be a power-on time of the switching circuit. t is t ₁ Before the moment, the output voltage of the switching circuit can be 0V; t is t ₁ After the time, the output voltage of the switching circuit may be 12V.

t ₂ The time may be a certain time after the switch circuit is powered on. t is t ₁ Time to t ₂ The time period between the moments may be a detection period.

It should be noted that the duration of the detection period may be set according to a time requirement, which is not limited in this application. For example, the duration of the detection period may be 60 milliseconds.

At t ₁ Time to t ₂ In the time period between the moments, the output voltage of the switch circuit is 12V, and then the controller can determine the output voltage of the switch circuitAnd normally, the switching circuit can be controlled to be continuously conducted.

Referring to fig. 5B, fig. 5B is a schematic diagram of an output voltage of another switching circuit according to an embodiment of the present disclosure. As shown in FIG. 5B, t ₁ The time may be the power-on time of the switching circuit, t ₂ The time may be a certain time t after the switch circuit is powered on ₁ Time to t ₂ The time period between the moments may be a detection period.

t ₁ Before the moment, the output voltage of the switching circuit can be 0V; t is t ₂ After the moment, the output voltage of the switching circuit may be 12V; t is t ₁ Time to t ₂ Between the moments, the output voltage of the switching circuit gradually decreases from 12V.

Due to the fact that at t ₁ Time to t ₂ In the time period between the moments, the output voltage of the switching circuit is less than 12V, and then the controller may determine that the output voltage of the switching circuit is abnormal, and may control the switching circuit to be turned off.

Next, the above case 2 will be described with reference to fig. 6A to 6B.

In this case, the switching circuit is already operating normally, and the output voltage of the switching circuit during operation can be detected.

Assume that the power supply provides a voltage of 12V. If the output voltage of the switching circuit is 12V in the detection time period, the controller can determine that the output voltage of the switching circuit is normal and can control the switching circuit to be continuously conducted; if the output voltage of the switch circuit is less than 12V in the detection period, the controller can determine that the output voltage of the switch circuit is abnormal and can control the switch circuit to be switched off.

Referring to fig. 6A, fig. 6A is a schematic view of another embodiment of the present applicationThe output voltage schematic of the switching circuit. As shown in FIG. 6A, t ₁ The time may be the power-on time of the switching circuit, t ₃ The time may be the current time, t ₂ The time of day may be some time of day prior to the current time of day.

t ₂ Time to t ₃ The time period between the moments may be a detection period.

Note that t is ₃ The time may be any time after the switching circuit normally operates. The duration of the detection period may be set according to a time requirement, which is not limited in this application. For example, the duration of the detection period may be 60 milliseconds.

As shown in FIG. 6, t ₁ Before the moment, the output voltage of the switching circuit can be 0V; t is t ₁ Time to t ₃ Between the moments, the output voltage of the switching circuit may be 12V.

Due to t ₂ Time to t ₃ In the time period between moments, the output voltage of the switch circuit is 12V, and then the controller can determine that the output voltage of the switch circuit is normal and can control the switch circuit to be continuously conducted.

Referring to fig. 6B, fig. 6B is a schematic diagram of an output voltage of another switching circuit according to an embodiment of the disclosure. As shown in the figure 6B of the drawings,

t ₁ the time may be the power-on time of the switching circuit, t ₃ The time may be the current time, t ₂ The time of day may be some time of day prior to the current time of day.

Note that t is ₃ The time can be any time after the switching circuit normally works. The duration of the detection period may be set according to a time requirement, which is not limited in this application. For example, the duration of the detection period may be 60 milliseconds.

As shown in fig. 6, t ₁ Before the moment, the output voltage of the switching circuit can be 0V; t is t ₁ Time to t ₂ Between moments, the output voltage of the switching circuit may be 12V; t is t ₂ At the moment of time tot ₃ Between the moments, the output voltage of the switching circuit gradually decreases from 12V.

Due to the fact that at t ₂ Time to t ₃ In the time period between the moments, the output voltage of the switching circuit is less than 12V, and the controller may determine that the output voltage of the switching circuit is abnormal and may control the switching circuit to be turned off.

In the power supply control circuit provided by this embodiment, after the switch circuit is turned on, the control circuit may collect the output voltage of the voltage dividing circuit, and may determine the output voltage of the switch circuit according to the output voltage of the voltage dividing circuit. If the output voltage of the switching circuit is normal in the detection time period, the control circuit can control the switching circuit to be continuously conducted; if the output voltage of the switch circuit is abnormal in the detection time interval, the control circuit can control the switch circuit to be switched off. Through the power supply control circuit, the switching circuit can be controlled to be switched off when the switching circuit is abnormal, so that the phenomenon that the electronic equipment is suddenly interrupted in service when the switching circuit is abnormal cannot be identified is avoided, and the working stability of the electronic equipment is good.

On the basis of any of the above embodiments, in order to avoid the influence caused by the normal fluctuation of the voltage, a preset voltage range may be set. When the output voltage of the switching circuit is within a preset voltage range, the output voltage is a normal output voltage; when the output voltage of the switch circuit is not within the preset voltage range, the output voltage is abnormal. The above-described case will be described with reference to fig. 7.

Fig. 7 is a schematic structural diagram of another power supply control circuit according to an embodiment of the present application. Referring to fig. 7, on the basis of fig. 4, the control circuit may further include a memory.

The memory may be used to store a preset voltage range.

The preset voltage range may be a normal output voltage range of the switching circuit.

It should be noted that, in the specific implementation process, the preset voltage range may be set according to actual requirements, and the present application is not limited thereto.

For example, assuming that the desired output voltage of the switch circuit is 12V, and the output voltage of the switch circuit is between 11.5V and 12.5V, the electronic device can work normally. In a specific implementation, the preset voltage range may be set to 11.5V to 12.5V.

In this embodiment, the controller may be configured to: and acquiring a preset voltage range in the memory. If the abnormal output voltage does not exist in the detection time period, controlling the switch circuit to be continuously conducted, wherein the abnormal output voltage is not in the preset voltage range; and if the abnormal output voltage exists in the detection time period, acquiring the duration of the abnormal output voltage, and controlling the switching circuit to be switched on or switched off according to the duration.

If the duration is less than or equal to the first threshold, controlling the switching circuit to be continuously conducted and generating first alarm information, wherein the first alarm information is used for indicating that the switching circuit is abnormal; and if the duration is longer than the first threshold, controlling the switch circuit to be switched off.

Specifically, if the abnormal output voltage exists in the detection period, but the duration of the abnormal output voltage is less than or equal to the first threshold, the abnormal output voltage has little or no influence on the normal operation of the electronic device, and the controller can control the switching circuit to be continuously turned on. If abnormal output voltage exists in the detection period and the duration of the abnormal output voltage is greater than the first threshold, the abnormal output voltage can affect the normal state of the electronic equipment, and the controller can control the switch circuit to be switched off.

It should be noted that the first threshold may be set according to actual requirements, and the application is not limited to this.

In this embodiment, the controller controls the switch circuit to be turned on or off, which at least includes the following 3 cases:

case 1, no abnormal output voltage exists within the detection period.

And 2, in the detection period, the abnormal output voltage exists, and the duration of the abnormal output voltage is less than or equal to the first threshold.

And in case 3, the abnormal output voltage exists in the detection time period, and the duration of the abnormal output voltage is greater than the first threshold.

In the following, the detection time period is taken as a time period within a preset time period after the switch circuit is controlled to be turned on. The above case 1 will be described with reference to fig. 8.

Assume that the preset voltage range is 11.5V to 12.5V. If the output voltages of the switching circuits are all between 11.5V and 12.5V in the detection period, the controller may determine that there is no abnormal output voltage in the detection period. If the output voltage of the switching circuit is less than 11.5V or greater than 12.5V during the detection period, the controller may determine that an abnormal output voltage exists during the detection period.

Referring to fig. 8, fig. 8 is a schematic diagram of an output voltage of a switching circuit without an abnormal output voltage according to an embodiment of the present disclosure. As shown in FIG. 8, t ₁ The time may be a power-on time of the switching circuit. t is t ₂ The time may be a certain time after the switch circuit is powered on. t is t ₁ Time to t ₂ The time period between the moments may be a detection period.

t ₁ Before the time instant, the output voltage of the switching circuit may be 0V. t is t ₁ Time to t ₂ In the time period between the moments, the output voltage of the switching circuit is greater than 11.5V and less than 12.5V. The controller may determine that there is no abnormal output voltage during the detection period and may control the switching circuit to continue to be turned on.

In the following, the detection time period is taken as a time period within a preset time period after the switch circuit is controlled to be turned on. The above case 2 will be described with reference to fig. 9.

Assume that the first threshold is 60 milliseconds. If the abnormal output voltage exists in the detection time period and the duration of the abnormal output voltage is less than or equal to 60 milliseconds, the controller can control the switch circuit to be continuously conducted. If abnormal output voltage exists in the detection time interval and the duration of the abnormal output voltage is more than 60 milliseconds, the controller can control the switch circuit to be switched off.

Referring to fig. 9, fig. 9 is a schematic diagram of an output voltage of a switching circuit with abnormal output voltage according to an embodiment of the present application. As shown in FIG. 9, t ₁ The time may be a power-up time of the switching circuit. t is t ₂ The time may be a certain time after the switch circuit is powered on. t is t ₁ Time to t ₂ The time period between the moments may be a detection period. t is t ₃ Time and t ₄ At a time t ₁ Time to t ₂ Two time instants in between.

t ₁ Time to t ₃ In the time period between the moments, the output voltage of the switching circuit is greater than or equal to 11.5V and less than 12.5V, i.e. t ₁ Time to t ₃ During the time period between the moments, there is no abnormal output voltage. t is t ₃ Time to t ₄ The output voltage of the switching circuit is less than 11.5V, i.e. t, in the time period between moments ₃ Time to t ₄ During the time period between the instants, there is an abnormal output voltage. t is t ₄ After the moment, the output voltage of the switching circuit is greater than or equal to 11.5V and less than 12.5V, i.e. t ₄ After the time, there is no abnormal output voltage.

Let t ₃ Time to t ₄ The duration of the time period between the times is 40 milliseconds, the controller may determine that an abnormal output voltage exists within the detection period, and the duration of the abnormal output voltage is less than 60 milliseconds. In this case, the controller may control the switching circuit to continue to conduct.

In the following, the detection time period is taken as a time period within a preset time period after the switch circuit is controlled to be turned on. The above case 3 will be described with reference to fig. 10.

Referring to fig. 10, fig. 10 is a schematic diagram of an output voltage of another switching circuit with abnormal output voltage according to an embodiment of the present application. As shown in fig. 10, t ₁ The time may be a power-up time of the switching circuit. t is t ₂ The time may be a certain time after the switch circuit is powered on. t is t ₁ Time to t ₂ The time period between the moments may be a detection period. t is t ₃ At a time t ₁ Time to t ₂ Some time between the times.

t ₁ Time to t ₃ In the time period between the moments, the output voltage of the switching circuit is greater than or equal to 11.5V and less than 12.5V, i.e. t ₁ Time to t ₃ During the time period between the moments, there is no abnormal output voltage. t is t ₃ Time to t ₂ The output voltage of the switching circuit is less than 11.5V, i.e. t, in the time period between moments ₃ Time to t ₂ During the time period between the instants, there is an abnormal output voltage.

Let t ₃ Time to t ₂ The duration of the time period between the times is 65 milliseconds, the controller may determine that an abnormal output voltage is present within the detection period and the duration of the abnormal output voltage is greater than 60 milliseconds. In this case, the controller may control the switching circuit to be turned off.

In this embodiment, the control circuit may be further configured to send the first warning information to a Baseboard Management Controller (BMC).

The state of the switch circuit may be included in the first warning information. The state of the switching circuit may be normal, or the state of the switching circuit may be abnormal.

In a possible implementation manner, if there is no abnormal output voltage in the detection period, the control circuit may control the switch circuit to continue to be turned on, and may send the first warning message to the BMC. The first warning information is used to indicate that the state of the switch circuit is normal. In this case, after receiving the first warning message, the BMC may display that the state of the switch circuit is normal, so that the worker may know that the state of the switch circuit is normal.

In another possible implementation manner, if an abnormal output voltage exists in the detection period, and the duration of the abnormal output voltage is less than or equal to the first threshold. The control circuit can control the switch circuit to be continuously conducted, and can send first warning information to the BMC. The first warning information is used to indicate that the state of the switch circuit is abnormal. In this case, after receiving the first warning message, the BMC may display that the state of the switching circuit is abnormal, so that the worker may know that the state of the switching circuit is abnormal and may repair or replace the switching circuit.

In this embodiment, the control circuit may further receive a power-on instruction; and controlling the switch circuit to be conducted according to the power-on command.

The power-on command may be a power-on command of the switching circuit.

Specifically, before the control circuit controls the switch circuit to be turned on, a power-on instruction input by a user may be received, and the switch circuit is powered on according to the power-on instruction, so that the switch circuit is turned on.

For example, assume that the control circuit is a CPLD and the switch circuit is a MOS transistor. After receiving the power-on command, the control circuit may send a high level signal to the switch circuit to turn on the switch circuit.

In the power supply control circuit provided by this embodiment, after the switch circuit is turned on, the control circuit may collect the output voltage of the voltage dividing circuit, and may determine the output voltage of the switch circuit according to the output voltage of the voltage dividing circuit. If the abnormal output voltage does not exist in the switching circuit within the detection time period, controlling the switching circuit to be continuously conducted; if the abnormal output voltage exists in the switch circuit within the detection time period and the duration of the abnormal output voltage is less than or equal to a first threshold value, controlling the switch circuit to be continuously conducted; and if the abnormal output voltage exists in the switch circuit within the detection time period and the duration of the abnormal output voltage is greater than the first threshold value, controlling the switch circuit to be switched off. The control circuit can also send first warning information to the BMC so that the BMC can display that the state of the switch circuit is normal or abnormal. If the state of the switch circuit is abnormal, the switch circuit can be manually maintained or replaced according to the information displayed by the BMC. Through the power supply control circuit, the switching circuit can be controlled to be disconnected or maintained in time when the switching circuit is abnormal, so that the sudden service interruption of the electronic equipment when the abnormality of the switching circuit cannot be identified is avoided, and the working stability of the electronic equipment is good.

On the basis of any of the above embodiments, the switch circuit may be a MOS transistor. The above-described case will be described with reference to fig. 11.

Fig. 11 is a schematic structural diagram of another power supply control circuit according to an embodiment of the present application. Referring to fig. 11, the power supply control circuit may include a switch circuit, a voltage divider circuit, and a control circuit. The switching circuit can be a MOS transistor.

In the embodiment, a grid (G) electrode of the MOS tube is connected with the control circuit; the source (S) stage of the MOS tube is connected with the voltage division circuit; and the drain (D) stage of the MOS switch is used for being connected with a power supply.

In this embodiment, the control circuit may control the MOS transistor to be turned on or off by controlling the gate of the MOS transistor to be turned on or off. After the MOS tube is conducted, the control circuit can determine the source electrode output voltage of the MOS tube through the voltage division circuit and judge whether the source electrode output voltage of the MOS tube is abnormal output voltage or not.

If the source output voltage of the MOS tube is abnormal output voltage and the duration of the abnormal output voltage is less than or equal to the first threshold, the control circuit can control the MOS tube to be continuously conducted and can send first alarm information to the BMC. The first alarm information is used for indicating that the state of the MOS tube is an abnormal state. The BMC can display the state of the MOS tube as an abnormal state according to the first alarm indication, so that maintenance personnel can maintain or replace the MOS tube.

If the source output voltage of the MOS tube is abnormal output voltage and the duration of the abnormal output voltage is greater than the first threshold, the control circuit can control the MOS tube to be disconnected. After the MOS tube is disconnected, the BMC can detect that the electronic equipment is not electrified and can send an alarm so that maintenance personnel can maintain or replace the MOS tube.

In this embodiment, the voltage dividing circuit includes a voltage dividing resistor, where a resistance value of the voltage dividing resistor is determined according to the output voltage of the switching circuit and the maximum allowable voltage of the control circuit, and the voltage output by the voltage dividing circuit to the control circuit is less than or equal to the maximum allowable voltage of the control circuit.

The maximum allowed voltage of the control circuit may be the maximum allowed voltage of a voltage sampling port in the control circuit.

For example, assume that the control circuit is a CPLD, and the voltage sampling port is an input pin of the CPLD. The maximum allowed voltage of the control circuit may be the maximum allowed voltage of that input pin of the CPLD.

The voltage dividing resistor may be a plurality of resistors arranged in series.

It should be noted that the control circuit may collect an output voltage of any one of the voltage dividing resistors. The output voltage of any one of the resistors may be the output voltage of the voltage divider circuit.

For example, assuming that the output voltage of the source of the MOS transistor is 12V, and the maximum allowable voltage of the control circuit is 3V, the output voltage of the voltage divider circuit may be 3V.

In this case, the voltage dividing resistor may include 2 resistors arranged in series. The resistances of the two resistors may be 2 Ω and 10 Ω in sequence, according to the direction of current flow. The control circuit can collect the output voltage of the resistor with the resistance of 2 omega.

In the power supply control circuit provided in this embodiment, the switch circuit may be a MOS transistor. After the MOS tube is electrified, the control circuit can acquire the output voltage of the voltage division circuit and can determine the output voltage of the source electrode of the MOS tube according to the output voltage of the voltage division circuit. If the source electrode of the MOS tube has no abnormal output voltage in the detection period, controlling the MOS tube to be continuously conducted; if abnormal output voltage exists in the source electrode of the MOS tube within the detection time period and the duration of the abnormal output voltage is less than or equal to a first threshold value, controlling the MOS tube to be continuously conducted; and if the MOS tube has abnormal output voltage in the detection time period and the duration of the abnormal output voltage is greater than the first threshold, controlling the MOS tube to be disconnected. The control circuit can also send first warning information to the BMC so that the BMC can display that the state of the MOS tube is normal or abnormal. If the state of the MOS tube is abnormal, the MOS tube can be manually maintained or replaced according to the information displayed by the BMC. Through the power supply control circuit, the MOS tube can be controlled to be disconnected or maintained in time when the MOS tube is abnormal, so that the sudden service interruption of the electronic equipment when the MOS tube is not identified is avoided, and the working stability of the electronic equipment is better.

Fig. 12 is a schematic structural diagram of a server provided in the present application. As shown in fig. 12, the server 10 may include a load 11 and the power supply control circuit 12 according to any of the above embodiments, wherein the load 11 is connected to a switch circuit in the power supply control circuit 12.

The data receiving apparatus provided in the embodiment of the present application may include the power supply control circuit described in any of the above embodiments, and the implementation principle and the beneficial effect thereof are similar, and details are not repeated here.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

Each functional module in the embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.

All or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The foregoing program may be stored in a readable memory. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape (magnetic tape), floppy disk (flexible disk), optical disk (optical disk), and any combination thereof.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processing unit of a general purpose computer, special purpose computer, embedded processor, or other programmable terminal device to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable terminal device, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable terminal equipment to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable terminal equipment to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

In the present application, the terms "include" and variations thereof may refer to non-limiting inclusions; the term "or" and variations thereof may mean "and/or". The terms "first," "second," and the like in this application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. In the present application, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Claims

1. A power supply control circuit is characterized by comprising a switch circuit, a voltage division circuit and a control circuit,

2. The circuit of claim 1, wherein the control circuit comprises a voltage sampling port and a controller, wherein,

3. The circuit of claim 2, wherein the controller is specifically configured to:

if abnormal output voltage does not exist in the detection time period, controlling the switch circuit to be continuously conducted, wherein the abnormal output voltage is not in a preset voltage range;

4. The circuit of claim 3, further comprising a memory in the control circuit, the controller further configured to:

and acquiring the preset voltage range in the memory.

5. The circuit of claim 3 or 4, wherein controlling the switching circuit to be on or off according to the duration comprises:

if the duration is less than or equal to a first threshold, controlling the switching circuit to be continuously conducted and generating first alarm information, wherein the first alarm information is used for indicating that the switching circuit is abnormal;

6. The circuit of claim 5, wherein the control circuit is further configured to:

7. The circuit of any of claims 1-6, wherein the control circuit is further configured to:

receiving a power-on instruction;

8. The circuit according to any of claims 1-7, wherein the switching circuit is a metal-oxide semiconductor field effect transistor (MOS) transistor, wherein,

the grid electrode of the MOS tube is connected with the control circuit;

and the drain of the MOS switch is used for being connected with the power supply.

9. The circuit according to any one of claims 1 to 8, wherein the voltage dividing circuit comprises a voltage dividing resistor, wherein a resistance value of the voltage dividing resistor is determined according to an output voltage of the switching circuit and a maximum allowable voltage of a control circuit, and a voltage output by the voltage dividing resistor to the control circuit is less than or equal to the maximum allowable voltage of the control circuit.

10. A server, comprising a load and a power supply control circuit according to any one of claims 1 to 9, wherein the load is connected to a switching circuit in the power supply control circuit.