CN113687707B - Power supply voltage control device of mainboard and server - Google Patents
Power supply voltage control device of mainboard and server Download PDFInfo
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- CN113687707B CN113687707B CN202111244268.6A CN202111244268A CN113687707B CN 113687707 B CN113687707 B CN 113687707B CN 202111244268 A CN202111244268 A CN 202111244268A CN 113687707 B CN113687707 B CN 113687707B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
Abstract
The application discloses a control device and a server for power supply voltage of a mainboard, wherein the scheme comprises a first power supply connector, a processor and N controllable switch modules, wherein the first power supply connector, the processor and the N controllable switch modules are arranged on the mainboard; the N controllable switch modules share the first power connector, and the processor controls the controllable switch modules corresponding to the board card to be conducted when the board card of the first power connector is determined to be inserted, so that the corresponding power supply voltage is provided for the board card. Compared with the prior art, the device realizes the sharing of the power connectors on the mainboard when the mainboard supplies power to the boards with different power supply voltage requirements, reduces the number of the power connectors on the mainboard, reduces the cost consumed by the power connectors and the PCB space of the mainboard occupied by the power connectors, and improves the power density of a server where the mainboard is located; meanwhile, the probability of wrong connection between the board card and the power connector on the mainboard is reduced, and the probability that the board card cannot normally work or even is burnt out is reduced.
Description
Technical Field
The present invention relates to the field of voltage control technologies, and in particular, to a device and a server for controlling a supply voltage of a motherboard.
Background
In the prior art, a motherboard of a server is usually configured with different boards in different configurations, power connectors are disposed on the motherboard and the boards, and the power connectors configured on the boards on the motherboard are connected to the power connectors on the motherboard, so that power on the motherboard is supplied to the boards through the connected power connectors. When the power supply voltages required by the plurality of boards are the same, the power supply connectors on the mainboard are commonly used; when the power supply voltages required by a plurality of boards are different, different power connectors are usually arranged on the main Board to meet the power supply voltage requirements of the corresponding boards under different configurations, so that a large number of power connectors are usually seen on the existing main Board, the power connectors occupy a large part of the space of a Printed Circuit Board (PCB), the improvement of the power density of a server where the main Board is located is limited, the cost of the server is increased, the probability of wrong connection between the power connectors of the boards and the power connectors of the main Board is increased, and the boards can not work normally and even be burnt.
Disclosure of Invention
Compared with the prior art, the scheme realizes the sharing of the power connectors on the mainboard when the mainboard supplies power to the boards with different power supply voltage requirements, reduces the using quantity of the power connectors on the mainboard, reduces the cost consumed by more power connectors and the PCB space on the mainboard occupied by the power connectors, and improves the power density of the server where the mainboard is positioned; meanwhile, the probability of wrong connection between the board card and the power connector on the mainboard is reduced, and the probability that the board card cannot normally work or even is burnt out is reduced.
In order to solve the above technical problem, the present invention provides a device for controlling a supply voltage of a motherboard, the device including a first power connector, a processor and N controllable switch modules, which are arranged on the motherboard, where N is a preset integer not less than 2;
the input ends of the N controllable switch modules are respectively connected with power supply voltage in a one-to-one correspondence mode, and the output ends of the N controllable switch modules are connected with power supply pins of the first power supply connector;
the first power connector is connected with a second power connector of a board card matched on the mainboard and used for outputting power supply voltage required by the board card;
the processor is connected with the control ends of the N controllable switch modules and is used for controlling the controllable switch modules corresponding to the board card inserted into the first power connector to be switched on and controlling other controllable switch modules to be switched off when the board card inserted into the first power connector is determined.
Preferably, the detection device further comprises a detection module, an input end of the detection module is connected with a first in-place detection pin of the first power connector, and an output end of the detection module is connected with the processor, and is used for detecting a board card inserted into the first power connector through the first in-place detection pin and outputting a detection result;
the processor is further used for determining a board card inserted into the first power connector according to the detection result.
Preferably, the number of the first in-place detection pins is M, each second in-place detection pin of the second power connector of each board card corresponds to each first in-place detection pin one to one, each second in-place detection pin is grounded or suspended, the detection module includes M sub-detection modules, each sub-detection module includes a first power supply and a first resistor, the first power supply is connected with one end of the first resistor, the other end of the first resistor serves as an input end and an output end of the sub-detection module, and M is a positive integer.
Preferably, the number of the first in-place detection pins is M, each second in-place detection pin of the second power connector of each board card corresponds to each first in-place detection pin one to one, each second in-place detection pin is connected to a high level or is suspended, the detection module includes M sub-detection modules, the sub-detection modules are second resistors, one end of each second resistor serves as an input end and an output end of each sub-detection module, the other end of each second resistor is grounded, and M is a positive integer.
Preferably, the controllable switch module includes a first controllable switch, a second controllable switch, a third resistor, and a second power supply, a control end of the second controllable switch serves as a control end of the controllable switch module, a first end of the second controllable switch is grounded, and a second end of the second controllable switch is connected to one end of the third resistor and the control end of the first controllable switch respectively;
the processor is specifically configured to control a second controllable switch of a controllable switch module corresponding to the board card inserted into the first power connector to be turned on and control second controllable switches of other controllable switch modules to be turned off when the board card inserted into the first power connector is determined;
the other end of the third resistor is connected with the second power supply;
and the first end of the first controllable switch is used as the input end of the controllable switch module, and the second end of the first controllable switch is used as the output end of the controllable switch module, and is used for conducting when the second controllable switch is conducted, or else, the second controllable switch is disconnected.
Preferably, the controllable switch module further includes a fourth resistor and a third power supply, one end of the fourth resistor is connected to the control end of the second controllable switch, and the other end of the fourth resistor is connected to the third power supply;
the processor is specifically configured to, when it is determined that the board card of the first power connector is inserted, output a high level to a control end of a second controllable switch of the controllable switch module corresponding to the board card inserted into the first power connector, and output a low level to control ends of second controllable switches of other controllable switch modules.
Preferably, the intelligent alarm device further comprises N prompting modules, wherein the control ends of the N prompting modules are respectively connected with the control ends of the N controllable switch modules in a one-to-one correspondence manner and used for giving out a prompt when the controllable switch modules corresponding to the intelligent alarm device are switched on.
Preferably, the prompting module includes a light emitting diode, a fifth resistor, a third controllable switch and a fourth power supply, an anode of the light emitting diode is connected with the fourth power supply, and a cathode of the light emitting diode is connected with one end of the fifth resistor; the other end of the fifth resistor is connected with the first end of the third controllable switch; the control end of the third controllable switch is used as the control end of the prompting module, and the second end of the third controllable switch is grounded;
the prompting module is specifically used for controlling the third controllable switch to be switched on when the controllable switch module corresponding to the prompting module is switched on, and controlling the third controllable switch to be switched off when the controllable switch module corresponding to the prompting module is switched off;
the third controllable switch is used for controlling the light emitting diode to emit light for prompting when the third controllable switch is conducted.
Preferably, the power supply further comprises a BMC and a voltage reduction module, an input end of the voltage reduction module is connected with a power supply pin of the first power connector, and an output end of the voltage reduction module is connected with the BMC; the BMC is connected with the processor;
the BMC is used for receiving information of a board card inserted into the first power connector and sent by the processor, and feeding back the voltage of a power supply pin of the first power connector to the processor when the voltage of the power supply pin of the first power connector is judged not to be within a threshold range of the voltage corresponding to the board card;
the processor is further configured to disconnect the N controllable switch modules when receiving the feedback information of the BMC.
In order to solve the technical problem, the invention further provides a server which comprises the control device for the power supply voltage of the mainboard.
The application provides a control device and a server for power supply voltage of a mainboard, the scheme comprises a first power supply connector, a processor and N controllable switch modules, wherein the first power supply connector, the processor and the N controllable switch modules are arranged on the mainboard, and N is a preset integer not less than 2; the N controllable switch modules share the first power connector on the mainboard, and when the processor determines to insert the board card of the first power connector, the processor controls the controllable switch modules corresponding to the board card to be connected and controls other controllable switch modules to be disconnected so as to provide the corresponding power supply voltage for the board card. Compared with the prior art, the device realizes the sharing of the power connectors on the mainboard when the mainboard supplies power to the boards with different power supply voltage requirements, reduces the using quantity of the power connectors on the mainboard, reduces the cost consumed by the power connectors and the PCB space on the mainboard occupied by the power connectors, and improves the power density of a server where the mainboard is located; meanwhile, the probability of wrong connection between the board card and the power connector on the mainboard is reduced, and the probability that the board card cannot normally work or even is burnt out is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a control device for a supply voltage of a motherboard according to the present invention;
fig. 2 is a schematic structural diagram of a connection relationship between a motherboard and a board card according to the present invention;
fig. 3 is a schematic structural diagram of another control device for a supply voltage of a motherboard according to the present invention.
Detailed Description
The core of the invention is to provide a control device and a server of the power supply voltage of the mainboard, compared with the prior art, the proposal realizes the sharing of the power connectors on the mainboard when the mainboard supplies power to the boards with different power supply voltage requirements, reduces the using quantity of the power connectors on the mainboard, the cost consumed by more power connectors and the PCB space on the mainboard occupied by the power connectors, and improves the power density of the server where the mainboard is positioned; meanwhile, the probability of wrong connection between the board card and the power connector on the mainboard is reduced, and the probability that the board card cannot normally work or even is burnt out is reduced.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a device for controlling a supply voltage of a motherboard, the device including a first power connector 1, a processor 2, and N controllable switch modules 3, where N is a preset integer not less than 2, which are disposed on the motherboard;
the input ends of the N controllable switch modules 3 are respectively connected with power supply voltage in a one-to-one correspondence manner, and the output ends of the N controllable switch modules 3 are connected with power supply pins of the first power supply connector 1;
the first power connector 1 is connected with a second power connector of a board card matched on the mainboard and used for outputting power supply voltage required by the board card;
the processor 2 is connected with the control ends of the N controllable switch modules 3, and is configured to control the controllable switch modules 3 corresponding to the board card inserted into the first power connector 1 to be turned on and control the other controllable switch modules 3 to be turned off when the board card inserted into the first power connector 1 is determined.
In the prior art, a server is usually configured with different boards under different configurations, for example, a computing server with a main computing performance is generally configured with a GPU (graphics processing unit) with a strong data processing capability and an NVME (Non Volatile Memory host controller interface specification) hard disk with a fast transmission speed and a large storage capacity; a storage server for data storage function is usually configured with a RAID (Redundant array of Independent Disks) card with a data stacking function and a mechanical hard disk with low cost and large storage capacity. Different configurations can share the same mainboard and the same case, when the power supply voltages of the boards under different configurations are consistent, the multiplexing of the power connectors on the mainboard can be considered, but when the power supply voltages of the boards under different configurations are inconsistent, the mainboard can place the power connectors with different power supply voltages according to the needs of the boards under different configurations in order to be compatible with all the configurations.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a connection relationship between a motherboard and a board card provided in the present invention, in which the board card a is the motherboard, and the power connector a is connected to the power connector b to provide a voltage v1 for the board card b; the power supply connector c is connected with the power supply connector d and provides voltage v2 for the board card c; the power supply connector e is connected with the power supply connector f and provides voltage v3 for the board card d.
Therefore, on the mainboard of the existing server, the power connectors with a large number exist, the PCB space of the larger part on the mainboard is occupied, the improvement of the power density of the server is limited, and in order to solve the technical problem, in the application, the boards with different power supply voltage requirements share one power connector on the mainboard, so that the number of the power connectors on the mainboard is reduced.
Specifically, the N controllable switch modules 3 share the first power connector 1 on the motherboard, and when the processor 2 determines that the board card of the first power connector 1 is inserted, the controllable switch module 3 corresponding to the board card is controlled to be turned on, so that the turned-on controllable switch module 3 outputs the power supply voltage input at the input end of the controllable switch module, thereby implementing power supply to the board card.
In addition, the processor 2 may pre-store the corresponding relationship between the board card and the controllable switch module 3, so as to correspondingly control the controllable switch module 3 when the board card inserted into the first power connector 1 is determined; the processor 2 may be a CPLD (Complex Programmable Logic Device).
In summary, the present application provides a device for controlling a power supply voltage of a motherboard, which, compared with the prior art, implements sharing of power connectors on the motherboard when the motherboard supplies power to boards with different power supply voltage requirements, reduces the number of power connectors on the motherboard, reduces the cost consumed by power connectors, reduces the PCB space on the motherboard occupied by the power connectors, and improves the power density of a server where the motherboard is located; meanwhile, the probability of wrong connection between the board card and the power connector on the mainboard is reduced, and the probability that the board card cannot normally work or even is burnt out is reduced.
On the basis of the above-described embodiment:
referring to fig. 3, fig. 3 is a schematic structural diagram of another control device for a supply voltage of a motherboard according to the present invention.
As a preferred embodiment, the system further comprises a detection module, an input end of the detection module is connected with a first in-place detection pin of the first power connector 1, and an output end of the detection module is connected with the processor 2, and is used for detecting a board card inserted into the first power connector 1 through the first in-place detection pin and outputting a detection result;
the processor 2 is further configured to determine, according to the detection result, a board card inserted into the first power connector 1.
In this embodiment, a detection module is provided to detect a board inserted into the first power connector 1, specifically, the detection module detects the board inserted into the first power connector 1 according to information of a first in-place detection pin of the first power connector 1, and sends a detection result to the processor 2. When the cards with different power supply voltage requirements are inserted into the first power connector 1, different information is provided for the first in-place detection pin to distinguish.
In summary, the processor 2 recognizes the board cards with different power supply voltage requirements through the detection module, so as to provide the required power supply voltage for the corresponding board cards.
As a preferred embodiment, the number of the first in-place detection pins is M, each second in-place detection pin of the second power connector of each board card corresponds to each first in-place detection pin one to one, each second in-place detection pin is grounded or suspended, the detection module includes M sub-detection modules 4, each sub-detection module 4 includes a first power source 41 and a first resistor R1, the first power source 41 is connected with one end of a first resistor R1, the other end of the first resistor R1 serves as an input end and an output end of the sub-detection module 4, and M is a positive integer.
In this embodiment, each first in-place detection pin has a corresponding sub-detection module 4, and the board card inserted into the first power connector 1 is determined according to a detection result of the detection module.
For example, when M is 1, two boards may be detected at this time, a second in-place detection pin of one board is grounded, and a first pin of the processor 2 receives a low level sent by the detection module; a second in-place detection pin of the other board card is suspended, and a first pin of the processor 2 receives a high level sent by the detection module; the processor 2 determines the board card through the detection result received by the first pin, so as to control the controllable switch module 3 corresponding to the board card to be switched on and control the controllable switch module 3 corresponding to another board card to be switched off; wherein the content of the first and second substances,
the pins of the processor 2 controlling the controllable switch module 3 may be GPIO (General-purpose input/output) 0 and GPIO1, and the first pin of the processor 2 may be GPIO 2; when M is 2, four boards can be detected, please refer to table 1, where table 1 is a table of detection results provided by the present invention.
According to table 1, two second in-place detection pins of the board card B are both grounded, and a second pin and a third pin of the processor 2 both receive the low level sent by the detection module; one of two second in-place detection pins of the board card C is grounded, the other one is suspended, a second pin of the processor 2 receives a low level sent by the detection module, and a third pin receives a high level sent by the detection module; the connection condition of two second in-place detection pins of the board card D is completely opposite to that of the board card C, a second pin of the processor 2 receives a high level sent by the detection module, and a third pin receives a low level sent by the detection module; two second in-place detection pins of the board card E are both suspended, and a second pin and a third pin of the processor 2 both receive a high level sent by the detection module; the processor 2 determines the board card by the levels of the second pin and the third pin. In addition, the second pin may be GPIO2, and the third pin may be GPIO 3.
To sum up, realize the detection to the integrated circuit board through this detection module, circuit structure is simple and easily realize.
TABLE 1
| Second pin | Third base pin | Board card on-line detection |
| Low level of electricity | Low level of electricity | Board card B |
| Low level of electricity | High level | Board card C |
| High level | Low level of electricity | Board card D |
| High level | High level | Board cardE |
As a preferred embodiment, the number of the first in-place detection pins is M, each second in-place detection pin of the second power connector of each board card corresponds to each first in-place detection pin one to one, each second in-place detection pin is connected to a high level or is suspended, the detection module includes M sub-detection modules 4, each sub-detection module 4 is a second resistor, one end of each second resistor is used as an input end and an output end of each sub-detection module 4, the other end of each second resistor is grounded, and M is a positive integer.
In this embodiment, each first in-place detection pin has a corresponding sub-detection module 4, and the board card inserted into the first power connector 1 is determined according to a detection result of the detection module.
For example, when M is 1, two boards may be detected at this time, a second in-place detection pin of one board is connected to a high level, and a first pin of the processor 2 receives the high level sent by the detection module; a second in-place detection pin of the other board card is suspended, and a first pin of the processor 2 receives a low level sent by the detection module; the processor 2 determines the board card through the detection result received by the first pin, so as to control the controllable switch module 3 corresponding to the board card to be switched on and control the controllable switch module 3 corresponding to another board card to be switched off; the pins of the processor 2 controlling the controllable switch module 3 may be GPIO0 and GPIO1, and the first pin of the processor 2 may be GPIO 2.
To sum up, realize the detection to the integrated circuit board through this detection module, circuit structure is simple and easily realize.
As a preferred embodiment, the controllable switch module 3 includes a first controllable switch Q1, a second controllable switch Q2, a third resistor R3 and a second power supply 31, a control terminal of the second controllable switch Q2 is used as a control terminal of the controllable switch module 3, a first terminal of the second controllable switch Q2 is grounded, and a second terminal of the second controllable switch Q2 is respectively connected to one terminal of the third resistor R3 and the control terminal of the first controllable switch Q1;
the processor 2 is specifically configured to, when it is determined that the board card of the first power connector 1 is inserted, control the second controllable switch Q2 of the controllable switch module 3 corresponding to the board card inserted into the first power connector 1 to be turned on, and control the second controllable switches Q2 of the other controllable switch modules 3 to be turned off;
the other end of the third resistor R3 is connected to the second power supply 31;
a first terminal of the first controllable switch Q1 is used as an input terminal of the controllable switch module 3, and a second terminal of the first controllable switch Q1 is used as an output terminal of the controllable switch module 3, and is configured to be turned on when the second controllable switch Q2 is turned on, and otherwise is turned off.
In this embodiment, the power supply voltage input at the input end of the controllable switch module 3 is output by turning on the controllable switch module, so as to supply power to the board card inserted into the first power connector 1.
Specifically, when the board card inserted into the first power connector 1 is determined, the processor 2 controls the second controllable switch Q2 of the controllable switch module 3 corresponding to the board card inserted into the first power connector 1 to be turned on, so that the control end of the first controllable switch Q1 is grounded, and the first controllable switch Q1 is turned on to output the supply voltage.
In addition, the first controllable switch Q1 may be a PMOS transistor, a gate of the PMOS transistor serves as a control terminal of the first controllable switch Q1, a source of the PMOS transistor serves as a first terminal of the first controllable switch Q1, and a drain of the PMOS transistor serves as a second terminal of the first controllable switch Q1, and the PMOS transistor needs to meet a maximum working current requirement of the board card inserted into the first power connector 1; the second controllable switch Q2 may be an NMOS transistor, a gate of the NMOS transistor serves as a control terminal of the second controllable switch Q2, a source of the NMOS transistor serves as a first terminal of the second controllable switch Q2, and a drain of the NMOS transistor serves as a second terminal of the second controllable switch Q2.
In summary, the first controllable switch Q1 is turned on by turning on the second controllable switch Q2, so that the implementation is simpler.
As a preferred embodiment, the controllable switch module 3 further includes a fourth resistor R4 and a third power supply 32, one end of the fourth resistor R4 is connected to the control terminal of the second controllable switch Q2, and the other end of the fourth resistor R4 is connected to the third power supply 32;
the processor 2 is specifically configured to, when it is determined that the board card of the first power supply connector 1 is inserted, output a high level to the control end of the second controllable switch Q2 of the controllable switch module 3 corresponding to the board card inserted into the first power supply connector 1, and output a low level to the control ends of the second controllable switches Q2 of the other controllable switch modules 3.
In order to realize the control of the processor 2 on the controllable switch module 3, in this embodiment, when the pin is in a high impedance state, the pin is equivalently connected with a large resistor, and at this time, equivalently connected between the large resistor and the third power supply 32 is a fourth resistor R4, so that the control end of the controllable switch module 3 inputs a high level, and the controllable switch module 3 is turned on; when the pin is at a low level, the pin is equivalent to ground, and at this time, one end equivalent to the fourth resistor R4 is connected to the third power supply 32, and the other end of the fourth resistor R4 is grounded, so that the control end of the controllable switch module 3 inputs the low level, and the controllable switch module 3 is turned off.
As a preferred embodiment, the device further includes N prompting modules 5, wherein control ends of the N prompting modules 5 are respectively connected to control ends of the N controllable switch modules 3 in a one-to-one correspondence manner, and are used for giving a prompt when the controllable switch module 3 corresponding to the device is turned on.
In this embodiment, the board card inserted into the first power connector 1 is prompted by setting the prompting module 5, specifically, the board cards with different power supply voltage requirements correspond to different prompting messages, and the different prompting messages correspond to different controllable switch modules 3, so that the relationship between the board card and the controllable switch modules 3 is more vivid.
As a preferred embodiment, the prompting module 5 includes a light emitting diode LED, a fifth resistor R5, a third controllable switch Q3 and a fourth power supply 51, an anode of the light emitting diode LED is connected to the fourth power supply 51, and a cathode of the light emitting diode LED is connected to one end of the fifth resistor R5; the other end of the fifth resistor R5 is connected with a first end of a third controllable switch Q3; the control end of the third controllable switch Q3 is used as the control end of the prompting module 5, and the second end of the third controllable switch Q3 is grounded;
the prompting module 5 is specifically configured to control the third controllable switch Q3 to be turned on when the controllable switch module 3 corresponding to the prompting module is turned on, and control the third controllable switch Q3 to be turned off when the controllable switch module 3 corresponding to the prompting module is turned off;
the third controllable switch Q3 is used to control the light emitting diode LED to emit light for indication when it is turned on.
In this embodiment, the light emitting diode LED is controlled to emit light to indicate that the third controllable switch Q3 connected to the controllable switch module 3 is turned on when the controllable switch module 3 is turned on, so that the light emitting diode LED is controlled to emit light.
Specifically, the colors of the light emitted by the light emitting diodes LED in each prompting module 5 may be different; the third controllable switch Q3 may be an NMOS transistor, a gate of the NMOS transistor serves as a control terminal of the third controllable switch Q3, a source of the NMOS transistor serves as a second terminal of the third controllable switch Q3, and a drain of the NMOS transistor serves as a first terminal of the third controllable switch Q3; the fifth resistor R5 is a current limiting resistor, and the current after current limiting needs to meet the operating current requirement of the light emitting diode LED.
In conclusion, the LED emits light to prompt, so that the identifiability is enhanced.
As a preferred embodiment, the system further includes a BMC (Baseboard Management Controller) 6 and a voltage reduction module 7, an input end of the voltage reduction module 7 is connected to a power supply pin of the first power connector 1, and an output end of the voltage reduction module 7 is connected to the BMC 6; the BMC6 is connected with the processor 2;
the BMC6 is configured to receive information of a board card inserted into the first power connector 1 and sent by the processor 2, and feed back the voltage of the power supply pin of the first power connector 1 to the processor 2 when determining that the voltage of the power supply pin is not within the threshold range of the voltage corresponding to the board card;
the processor 2 is further configured to switch off the N controllable switch modules 3 upon receiving the feedback information of the BMC 6.
In order to increase reliability, the BMC6 and the voltage reduction module 7 are provided in this embodiment, and power-off protection is performed when power supply is abnormal. When determining that the board card of the first power connector 1 is inserted, the processor 2 sends the information of the board card to the BMC 6; the voltage of the power supply pin of the first power connector 1 is also transmitted to the BMC6 through the voltage reduction module 7; when judging that the voltage of the power supply pin of the first power connector 1 is not within the threshold range of the voltage corresponding to the board card, the BMC6 sends feedback information to the processor 2; and the processor 2 controls the N controllable switch modules 3 to be switched off after receiving the feedback information, thereby realizing power-off protection.
Specifically, the voltage-reducing module 7 may be composed of a sixth resistor R6 and a seventh resistor R7, one end of the sixth resistor R6 is used as the input end of the voltage-reducing module 7, the other end of the sixth resistor R6 is connected with one end of the seventh resistor R7, and the connected common end is used as the output end of the voltage-reducing module 7, the other end of the seventh resistor R7 is grounded, and the voltage-reducing module 7 reduces the voltage of the power supply pin of the first power connector 1 to R7/(R6 + R7) times, so as to avoid damaging the BMC 6.
In addition, an analog-to-digital converter can be arranged in the BMC6, and the analog quantity is converted into a digital quantity for subsequent judgment; the voltage threshold of the board card can be set in advance in the BMC6, and if the voltage of the power supply pin of the first power connector 1 is within the voltage threshold range, the BMC6 determines that the power supply is normal; if the voltage of the power supply pin of the first power connector 1 is not within the voltage threshold range, the BMC6 determines that the power supply is abnormal, and sends feedback information to the processor 2; communication between the BMC6 and the processor 2 may be via an I2C (Inter-Integrated Circuit) link.
In conclusion, when the power supply is abnormal, the BMC6 and the voltage reduction module 7 feed back the processor 2, and the processor 2 performs power-off protection, so that the board card inserted into the first power connector 1 is prevented from being damaged, and the safety and the reliability are improved.
The application also provides a server, which comprises the control device of the power supply voltage of the mainboard.
The control device for the power supply voltage of the motherboard in the server provided by the present application has been described in detail in all the embodiments described above, and is not described herein again.
It should be noted that, in the present specification, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A control device for power supply voltage of a mainboard is characterized by comprising a first power supply connector, a processor and N controllable switch modules, wherein the first power supply connector, the processor and the N controllable switch modules are arranged on the mainboard, and N is a preset integer not less than 2;
the input ends of the N controllable switch modules are respectively connected with power supply voltage in a one-to-one correspondence mode, and the output ends of the N controllable switch modules are connected with power supply pins of the first power supply connector;
the first power connector is connected with a second power connector of a board card matched on the mainboard and used for outputting power supply voltage required by the board card;
the processor is connected with the control ends of the N controllable switch modules and is used for controlling the controllable switch modules corresponding to the board card inserted into the first power connector to be switched on and controlling other controllable switch modules to be switched off when the board card inserted into the first power connector is determined;
the control ends of the N prompting modules are respectively connected with the control ends of the N controllable switch modules in a one-to-one correspondence manner and used for giving out a prompt when the controllable switch modules corresponding to the prompting modules are conducted;
the prompting module comprises a light emitting diode, a fifth resistor, a third controllable switch and a fourth power supply, wherein the anode of the light emitting diode is connected with the fourth power supply, and the cathode of the light emitting diode is connected with one end of the fifth resistor; the other end of the fifth resistor is connected with the first end of the third controllable switch; the control end of the third controllable switch is used as the control end of the prompting module, and the second end of the third controllable switch is grounded;
the prompting module is specifically used for controlling the third controllable switch to be switched on when the controllable switch module corresponding to the prompting module is switched on, and controlling the third controllable switch to be switched off when the controllable switch module corresponding to the prompting module is switched off;
the third controllable switch is used for controlling the light emitting diode to emit light for prompting when the third controllable switch is conducted.
2. The apparatus for controlling a power supply voltage of a motherboard according to claim 1, further comprising a detection module, an input terminal of the detection module is connected to a first in-place detection pin of the first power connector, and an output terminal of the detection module is connected to the processor, and is configured to detect a board inserted into the first power connector through the first in-place detection pin and output a detection result;
the processor is further used for determining a board card inserted into the first power connector according to the detection result.
3. The apparatus according to claim 2, wherein the number of the first in-place detection pins is M, each second in-place detection pin of the second power connector of each board card corresponds to each first in-place detection pin in a one-to-one manner, each second in-place detection pin is grounded or suspended, the detection module includes M sub-detection modules, each sub-detection module includes a first power source and a first resistor, the first power source is connected to one end of the first resistor, the other end of the first resistor serves as an input end and an output end of the sub-detection module, and M is a positive integer.
4. The apparatus according to claim 2, wherein the number of the first in-place detection pins is M, each second in-place detection pin of the second power connector of each board card corresponds to each first in-place detection pin in a one-to-one manner, each second in-place detection pin is connected to a high level or is floating, the detection module includes M sub-detection modules, the sub-detection module is a second resistor, one end of the second resistor serves as an input end and an output end of the sub-detection module, the other end of the second resistor is grounded, and M is a positive integer.
5. The apparatus for controlling a supply voltage of a motherboard according to claim 1, wherein the controllable switch module comprises a first controllable switch, a second controllable switch, a third resistor, and a second power supply, a control terminal of the second controllable switch is used as a control terminal of the controllable switch module, a first terminal of the second controllable switch is grounded, and a second terminal of the second controllable switch is respectively connected to one terminal of the third resistor and the control terminal of the first controllable switch;
the processor is specifically configured to control a second controllable switch of a controllable switch module corresponding to the board card inserted into the first power connector to be turned on and control second controllable switches of other controllable switch modules to be turned off when the board card inserted into the first power connector is determined;
the other end of the third resistor is connected with the second power supply;
and the first end of the first controllable switch is used as the input end of the controllable switch module, and the second end of the first controllable switch is used as the output end of the controllable switch module, and is used for conducting when the second controllable switch is conducted, or else, the second controllable switch is disconnected.
6. A control device for a supply voltage of a main board according to claim 5, wherein the controllable switch module further comprises a fourth resistor and a third power supply, one end of the fourth resistor is connected to the control terminal of the second controllable switch, and the other end of the fourth resistor is connected to the third power supply;
the processor is specifically configured to, when it is determined that the board card of the first power connector is inserted, output a high level to a control end of a second controllable switch of the controllable switch module corresponding to the board card inserted into the first power connector, and output a low level to control ends of second controllable switches of other controllable switch modules.
7. The device for controlling a power supply voltage of a motherboard according to any one of claims 1 to 6, further comprising a Baseboard Management Controller (BMC) and a voltage reduction module, wherein an input terminal of the voltage reduction module is connected to the power supply pin of the first power connector, and an output terminal of the voltage reduction module is connected to the BMC; the BMC is connected with the processor;
the BMC is used for receiving information of a board card inserted into the first power connector and sent by the processor, and feeding back the voltage of a power supply pin of the first power connector to the processor when the voltage of the power supply pin of the first power connector is judged not to be within a threshold range of the voltage corresponding to the board card;
the processor is further configured to disconnect the N controllable switch modules when receiving the feedback information of the BMC.
8. A server, characterized in that it comprises control means of the supply voltage of the motherboard according to any of claims 1 to 7.
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| CN116819272A (en) * | 2022-03-21 | 2023-09-29 | 深圳富联富桂精密工业有限公司 | Board card detection control circuit, method and server system |
| CN114935968B (en) * | 2022-06-30 | 2023-06-16 | 苏州浪潮智能科技有限公司 | Power supply board and server |
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