CN109917895B - A control device and control method of a voltage regulation module VRM - Google Patents
A control device and control method of a voltage regulation module VRM Download PDFInfo
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Abstract
本发明公开了一种电压调节模块VRM的控制装置及控制方法，相比于现有技术，除了待机电源standby、与电压调节模块VRM连接的CPLD、以及与电压调节模块VRM连接的用于向电压调节模块VRM提供输电需求的CPU之外，还包括与电压调节模块VRM连接的基板管理控制器BMC和与基板管理控制器BMC连接的用于控制待机电源standby与电压调节模块VRM之间的通断的开关，基板管理控制器BMC在监测到电压调节模块VRM的电压值小于第一预设值时控制开关断开，保证在系统重启时电压调节模块VRM与CPU进行正常的交互，避免了由于电压调节模块VRM不能输出powergood导致系统重启失败的问题。
The invention discloses a control device and a control method of a voltage regulation module VRM. Compared with the prior art, in addition to the standby power supply standby, a CPLD connected to the voltage regulation module VRM, and a voltage regulation module VRM connected to the voltage In addition to the CPU that the regulation module VRM provides for power transmission, it also includes a baseboard management controller BMC connected to the voltage regulation module VRM, and a baseboard management controller BMC connected to the baseboard management controller BMC for controlling the on-off between the standby power supply and the voltage regulation module VRM The baseboard management controller BMC controls the switch to turn off when it monitors that the voltage value of the voltage regulation module VRM is less than the first preset value, so as to ensure the normal interaction between the voltage regulation module VRM and the CPU when the system restarts, and avoid the voltage The problem that the adjustment module VRM cannot output powergood and the system fails to restart.
Description
Technical Field
The invention relates to the technical field of server hardware monitoring, in particular to a control device and a control method of a voltage regulation module VRM.
Background
The rapid development of server technology, the overall operating frequency is higher and higher, the working current rise rate is also higher and higher, and a large dynamic energy is required, so that the voltage Regulator module vrm (voltage Regulator module) with high efficiency and high dynamic characteristics is widely applied.
Fig. 1 is a schematic diagram of a connection structure and signal transmission of a voltage regulator module VRM in the prior art. As shown in fig. 1, in modern server design, the voltage regulation module VRM101 is disposed between the power supply 102 and the CPU 103, and is connected to the CPLD 104 and the BMC 105.
After the voltage regulation module VRM101 is powered on and receives the enable signal EN sent by the CPLD 104, the power supply 102 starts to output the dc voltage to the voltage regulation module VRM101, and when the output voltage reaches the rated value, the voltage regulation module VRM101 outputs a powergood signal to the CPLD 104 and outputs the dc voltage to the CPU 103. The voltage regulation module VRM101 interacts with the CPU 103 through the digital multi-phase PWM control bus AVSBus, and writes different values to the reg register according to different power consumption states to dynamically regulate the output voltage. The baseboard management controller BMC 105 monitors the status of the voltage regulation module VRM101 via the I2C signal.
In practical application, it is found that the problem of system restart failure due to the fact that the voltage regulation module VRM cannot output powergood when the server system is restarted is easily caused by applying the control scheme of the voltage regulation module VRM.
How to solve the problem that the system restart fails because the voltage regulation module VRM cannot output powergood when the server system restarts is a technical problem that needs to be solved by a person skilled in the art.
Disclosure of Invention
The invention aims to provide a control device and a control method of a voltage regulation module VRM, which are used for solving the problem of system restart failure caused by the fact that the voltage regulation module VRM cannot output powergood when a server system is restarted.
In order to solve the above technical problem, the present invention provides a control device for a voltage regulation module VRM, including a standby power supply standby, a CPLD connected to the voltage regulation module VRM for sending an enable signal to the voltage regulation module VRM, and a CPU connected to the voltage regulation module VRM for providing a power transmission demand to the voltage regulation module VRM, further including:
the standby power supply standby system comprises a substrate management controller BMC connected with the voltage regulation module VRM and a switch connected with the substrate management controller BMC and used for controlling the on-off of the standby power supply standby and the voltage regulation module VRM;
and when monitoring that the voltage value of the VRM is smaller than a first preset value, the BMC controls the switch to be switched off.
Optionally, the switch is specifically a transfer switch.
Optionally, the method further includes:
the alarm device is connected with the baseboard management controller BMC;
correspondingly, the baseboard management controller BMC is further configured to control the alarm device to alarm when the voltage value of the voltage regulation module VRM is monitored to be smaller than the first preset value.
Optionally, the alarm device is specifically an LED indicator light.
In order to solve the above technical problem, the present invention further provides a method for controlling a voltage regulator module VRM, where the BMC based on any one of the above embodiments includes:
monitoring the voltage value of a voltage regulation module VRM;
judging whether the voltage value is smaller than a first preset value or not;
if so, the control switch is opened to cut off the connection between the standby power supply standby and the voltage regulation module VRM.
Optionally, the method further includes:
when the system is restarted, the switch is controlled to be closed to connect the standby power supply standby and the voltage regulation module VRM.
Optionally, when the voltage value is smaller than the first preset value, the method further includes:
and outputting the information of the VRM fault.
Optionally, the method further includes:
and when the voltage value is greater than the first preset value and less than a second preset value, outputting the information of the VRM fault early warning of the voltage regulation module.
Optionally, the method further includes:
generating a fault report for a first fault event of which the voltage value is smaller than the first preset value and a second fault event of which the voltage value is larger than the first preset value and smaller than the second preset value;
and outputting the fault report.
Optionally, the method further includes:
receiving a setting for the first preset value and the second preset value.
In the prior art, because the standby power supply standby is usually adopted in the server to supply power to the system, as long as the system is connected with the alternating current power supply, the standby power supply standby keeps in a power supply state no matter whether the system is started or not. The voltage regulation module VRM sets the output voltage to be in a low value state along with the power failure of the CPU when the system is shut down, the voltage regulation module VRM cannot refresh in the power failure due to the power supply of the standby power supply standby, and the output voltage is locked in the low value state, so that when the system is restarted, the low value voltage of the voltage regulation module VRM is not enough to start the CPU, and therefore a powergood signal is not output, and the system is failed to restart.
Compared with the prior art, the control device of the voltage regulation module VRM provided by the invention comprises a standby power supply standby, a CPLD (complex programmable logic device) connected with the voltage regulation module VRM and used for sending an enabling signal to the voltage regulation module VRM, and a CPU (central processing unit) connected with the voltage regulation module VRM and used for providing power transmission requirements for the voltage regulation module VRM, and also comprises a substrate management controller BMC (baseboard management controller) connected with the voltage regulation module VRM and a switch connected with the substrate management controller BMC and used for controlling the on-off between the standby power supply standby and the voltage regulation module VRM, wherein the substrate management controller BMC controls the switch to be switched off when monitoring that the voltage value of the voltage regulation module VRM is smaller than a first preset value, so that the voltage regulation module VRM and the CPU are ensured to normally interact when a system is restarted, and the problem of system failure restart caused by the fact that the voltage regulation module VRM cannot output powergood is avoided. The invention also provides a control method of the voltage regulation module VRM, which has the beneficial effects and is not repeated herein.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art 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 that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a diagram illustrating a connection structure and signal transmission of a VRM in the prior art;
fig. 2 is a schematic diagram of a connection structure and signal transmission of a control device of a voltage regulation module VRM according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another control device of the VRM according to the embodiment of the present invention;
fig. 4 is a flowchart of a control method of the voltage regulation module VRM according to an embodiment of the present invention.
Detailed Description
The core of the invention is to provide a control device and a control method of a voltage regulation module VRM, which are used for solving the problem of system restart failure caused by the fact that the voltage regulation module VRM cannot output powergood when a server system is restarted.
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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. 2 is a schematic diagram of a connection structure and signal transmission of a control device of a voltage regulation module VRM according to an embodiment of the present invention.
In the prior art, because the voltage regulation module VRM uses the power supplied by the standby power supply standby, when the DC of the system is powered off and the AC is not powered off, the phenomenon that the system can not be restarted normally occurs with a certain probability. At this time, when the standby power supply standby is used for supplying power to the system, the standby power supply standby keeps in a power supply state no matter whether the system is started or not as long as the system is connected with the alternating current power supply. When a shutdown command or a restart command is received, the server is not disconnected with the alternating current power supply, the CPLD pulls the enabling signal low, the system starts to gradually power down, the CPU cannot interact with the voltage regulating module VRM at the moment, and the output voltage value in the reg register of the voltage regulating module VRM points to a low value state along with the reduction of the power consumption of the CPU. Because the voltage regulation module VRM is directly connected with the standby power supply standby, the reg register is refreshed after power failure, and the low value state is kept. When the system is restarted, the low-value voltage cannot reach the threshold voltage for starting the system, so that the voltage regulation module VRM does not output a powergood signal to the CPLD, and the system is failed to restart.
After a failure mechanism of server restart failure caused by the voltage regulation module VRM is determined, the problem that the voltage regulation module VRM cannot be powered off to refresh the reg register due to the influence of power supply of the standby power supply standby is solved, and therefore the voltage regulation module VRM is required to be powered off as the CPU when the system is shut down, and the reg register is refreshed in a power-off manner.
As shown in fig. 2, the control device of the voltage regulation module VRM according to the embodiment of the present invention includes a standby power supply standby 201, a CPLD 104 connected to the voltage regulation module VRM101 for sending an enable signal to the voltage regulation module VRM101, and a CPU 103 connected to the voltage regulation module VRM101 for providing a power transmission demand to the voltage regulation module VRM101, and unlike the prior art (see fig. 1), further includes:
a substrate management controller BMC 202 connected to the voltage regulation module VRM101 and a switch 203 connected to the substrate management controller BMC 202 for controlling on/off between the standby power supply standby 201 and the voltage regulation module VRM 101;
when monitoring that the voltage value of the voltage regulation module VRM101 is smaller than the first preset value, the BMC 202 controls the switch 203 to be turned off.
In specific implementation, the switch 203 is used for controlling the on-off between the standby power supply standby 201 and the voltage regulating module VRM101, and specifically, a change-over switch can be adopted, and is a switching electrical appliance for switching over two or more power supplies or loads, and is formed by combining a plurality of contacts, the components are fastened into a whole through bolts, and in the electrical equipment, the switch is mainly used for connecting and disconnecting a circuit infrequently, connecting the power supply and the load, measuring three-phase voltage, controlling the positive and negative rotation, the star-delta starting and the like of a small-capacity asynchronous motor.
The BMC 202 monitors the state of the VRM101 through the I2C signal and controls the on/off of the switch 203.
The first preset value is a voltage critical value which is set by operation and maintenance personnel and can enable the system to be started normally by the voltage regulation module VRM 101. The baseboard management controller BMC 202 collects the output voltage value of the voltage regulation module VRM101 in the process of monitoring the voltage regulation module VRM101, and by analyzing the output voltage value in the historical operating data, an uncertain range of the voltage critical value can be obtained, the output voltage value below the range inevitably causes the system to be unable to restart, and the output voltage value above the range can ensure the normal start of the system. On the basis, the first preset value can be an uncertain range or a value in the uncertain range.
The interaction between the voltage regulation module VRM101 and the CPU 103 and the CPLD 104 can be described with reference to fig. 1 and the description of the prior art, and will not be described herein again.
Compared with the prior art, the control device of the voltage regulation module VRM provided by the invention comprises a standby power supply standby, a CPLD (complex programmable logic device) connected with the voltage regulation module VRM and used for sending an enabling signal to the voltage regulation module VRM, and a CPU (central processing unit) connected with the voltage regulation module VRM and used for providing power transmission requirements for the voltage regulation module VRM, and also comprises a substrate management controller BMC (baseboard management controller) connected with the voltage regulation module VRM and a switch connected with the substrate management controller BMC and used for controlling the on-off between the standby power supply standby and the voltage regulation module VRM, wherein the substrate management controller BMC controls the switch to be switched off when monitoring that the voltage value of the voltage regulation module VRM is smaller than a first preset value, so that the voltage regulation module VRM and the CPU are ensured to normally interact when a system is restarted, and the problem of system failure restart caused by the fact that the voltage regulation module VRM cannot output powergood is avoided.
Fig. 3 is a schematic structural diagram of another control device of the voltage regulation module VRM according to an embodiment of the present invention. On the basis of the foregoing embodiment, in another embodiment, in order to prompt the user that the system restart fault of the server is caused by the voltage regulation module VRM101 locking the low-value voltage, so as to facilitate the user to quickly locate the cause of the system restart fault, the control device of the voltage regulation module VRM may further include an alarm device 301 connected to the BMC 202;
correspondingly, the BMC 202 is further configured to control the alarm device 301 to alarm when the voltage value of the voltage regulation module VRM101 is monitored to be smaller than the first preset value.
In a specific implementation, the alarm device 301 may be a buzzer, an indicator light, or a voice announcer. For example, the alarm device can adopt an LED indicator light.
On the basis of the above detailed description of the various embodiments corresponding to the control device of the voltage regulation module VRM, the present invention also discloses a control method of the voltage regulation module VRM corresponding to the above control device.
Fig. 4 is a flowchart of a control method of the voltage regulation module VRM according to an embodiment of the present invention. As shown in fig. 4, based on the baseboard management controller BMC in the control device of the voltage regulation module VRM provided in the foregoing embodiment, the method for controlling the voltage regulation module VRM includes:
s401: the voltage value of the voltage regulation module VRM is monitored.
S402: judging whether the voltage value is smaller than a first preset value or not; if so, the process proceeds to step S403.
S403: the control switch is opened to cut off the connection between the standby power supply standby and the voltage regulation module VRM.
In a specific implementation, the BMC monitors the voltage value in the reg register of the voltage regulation module VRM101 through the I2C signal, and switches off the switch between the standby power supply standby and the voltage regulation module VRM when the voltage value is lower than the first preset value.
Since the embodiment of the control method portion corresponds to the embodiment of the control device portion, please refer to the description of the embodiment of the control device portion for the embodiment of the control method portion, which is not repeated here.
On the basis of the above embodiment, the control method of the voltage regulation module VRM may further include:
when the voltage value is not less than the first preset value and the switch is in an off state, the switch is controlled to be closed to connect the standby power supply standby and the voltage regulation module VRM.
And when the system is restarted, the control switch is closed, so that the normal work of the voltage regulation module VRM is ensured.
Further, when the voltage value is smaller than the first preset value, the control method of the voltage regulation module VRM further includes:
and outputting the information of the VRM fault.
In addition to the alarm of the fault of the output voltage regulation module VRM by the alarm device in the above-described control device embodiment, the user may also be prompted by displaying a fault information window of the voltage regulation module VRM on a display screen of the server or by sending information of the fault of the output voltage regulation module VRM to a designated address.
In the above embodiment of the control device, it is mentioned that there may be an indeterminate range of the voltage that causes the system to be unable to start, and if the first preset value is a value within the indeterminate range, a voltage value higher than the first preset value within the indeterminate range may also cause the system to be unable to start normally, which needs to prompt the user to check in time, so the control method of the voltage regulation module VRM further includes:
and when the voltage value is greater than the first preset value and less than the second preset value, outputting the information of the VRM fault early warning of the voltage regulation module.
The second preset value here is a value that is larger than the first preset value and is within the above-described uncertain range.
On this basis, since the refresh failure of the voltage regulation module VRM is a large reason that may cause the system restart failure, it is necessary for operation and maintenance personnel to analyze the abnormal voltage value in the history data of the voltage regulation module VRM, and therefore the control method of the voltage regulation module VRM may further include:
generating a fault report for a first fault event of which the voltage value is smaller than a first preset value and a second fault event of which the voltage value is larger than the first preset value and smaller than a second preset value;
and outputting a fault report.
The baseboard management controller BMC captures error log information through an I2C bus, and operation and maintenance personnel can conveniently locate and analyze the operation problems of the server system.
The first and second failure times may include, but are not limited to, a server model, a failure occurrence time, a normal voltage value of the voltage regulation module VRM, a voltage value at the time of the failure occurrence, and the like.
Further, the control method of the voltage regulation module VRM further includes:
settings for a first preset value and a second preset value are received.
The detailed description of the control device and the control method of the voltage regulation module VRM provided by the present invention is provided above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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.
Claims (10)
1. A control apparatus of a voltage regulation module VRM, comprising a standby power supply standby, a CPLD connected to the voltage regulation module VRM for sending an enable signal to the voltage regulation module VRM, and a CPU connected to the voltage regulation module VRM for providing a power transmission demand to the voltage regulation module VRM, characterized by further comprising:
the standby power supply standby system comprises a substrate management controller BMC connected with the voltage regulation module VRM and a switch connected with the substrate management controller BMC and used for controlling the on-off of the standby power supply standby and the voltage regulation module VRM;
when monitoring that the voltage value of the VRM is smaller than a first preset value, the BMC controls the switch to be switched off, and when restarting the system, controls the switch to be switched on; the first preset value is a voltage critical value of the voltage regulating module VRM for enabling the system to be started normally.
2. Control device according to claim 1, characterized in that the switch is in particular a change-over switch.
3. The control device according to claim 1, characterized by further comprising:
the alarm device is connected with the baseboard management controller BMC;
correspondingly, the baseboard management controller BMC is further configured to control the alarm device to alarm when the voltage value of the voltage regulation module VRM is monitored to be smaller than the first preset value.
4. Control device according to claim 3, characterized in that the warning device is in particular an LED indicator light.
5. A control method of a voltage regulation module VRM, characterized in that a baseboard management controller BMC according to any of claims 1 to 4 comprises:
monitoring the voltage value of a voltage regulation module VRM;
judging whether the voltage value is smaller than a first preset value or not;
if yes, controlling a switch to be opened to cut off the connection between a standby power supply standby and the voltage regulation module VRM, and controlling the switch to be closed when the system is restarted; the first preset value is a voltage critical value of the voltage regulating module VRM for enabling the system to be started normally.
6. The control method according to claim 5, characterized by further comprising:
when the voltage value is not less than the first preset value and the switch is in an open state, controlling the switch to be closed to connect the standby power supply standby and the voltage regulation module VRM.
7. The control method according to claim 5, when the voltage value is smaller than the first preset value, further comprising:
and outputting the information of the VRM fault.
8. The control method according to claim 5, characterized by further comprising:
and when the voltage value is greater than the first preset value and less than a second preset value, outputting the information of the VRM fault early warning of the voltage regulation module.
9. The control method according to claim 8, characterized by further comprising:
generating a fault report for a first fault event of which the voltage value is smaller than the first preset value and a second fault event of which the voltage value is larger than the first preset value and smaller than the second preset value;
and outputting the fault report.
10. The control method according to claim 8, characterized by further comprising:
receiving a setting for the first preset value and the second preset value.
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| CN111338455A (en) * | 2020-02-27 | 2020-06-26 | 苏州浪潮智能科技有限公司 | A server power management device, method and system |
| CN121050558A (en) * | 2025-10-30 | 2025-12-02 | 浪潮计算机科技有限公司 | Condition-based power supply fault detection circuits and methods, and electronic devices |
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