CN109917895A - A kind of control device and control method of voltage regulator module VRM - Google Patents
A kind of control device and control method of voltage regulator module VRM Download PDFInfo
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- CN109917895A CN109917895A CN201910188780.XA CN201910188780A CN109917895A CN 109917895 A CN109917895 A CN 109917895A CN 201910188780 A CN201910188780 A CN 201910188780A CN 109917895 A CN109917895 A CN 109917895A
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Abstract
The invention discloses the control devices and control method of a kind of voltage regulator module VRM, compared with the prior art, in addition to standby power standby, the CPLD being connect with voltage regulator module VRM, and except the CPU for providing transmission of electricity demand to voltage regulator module VRM being connect with voltage regulator module VRM, it further include the baseboard management controller BMC being connect with voltage regulator module VRM and the switch for being used to control the on-off between standby power standby and voltage regulator module VRM being connect with baseboard management controller BMC, baseboard management controller BMC control switch when the voltage value for monitoring voltage regulator module VRM is less than the first preset value disconnects, guarantee that voltage regulator module VRM is normally interacted with CPU when the system restarts, it avoids Since voltage regulator module VRM cannot export the problem of powergood causes system reboot to fail.
Description
Technical field
The present invention relates to server hardware monitoring technology fields, more particularly to the control of voltage regulator module VRM a kind of
Device and control method.
Background technique
Server technology is grown rapidly, and complete machine working frequency is higher and higher, and operating current climbing is also getting faster, and needs
Very big dynamic power, therefore have both voltage regulator module VRM (the Voltage Regulator of high efficiency and high dynamic characteristic
Module it) is widely used.
Fig. 1 is that the connection structure of voltage regulator module VRM and signal transmit schematic diagram in the prior art.As shown in Figure 1,
Modern server design in, voltage regulator module VRM 101 be set between power supply 102 and CPU 103, while with CPLD 104 and
The connection of baseboard management controller BMC 105.
After voltage regulator module VRM 101 is powered on and received the enable signal EN of the transmission of CPLD 104, power supply 102 starts
DC voltage, when output voltage reaches rated value, voltage regulator module VRM 101 are exported to voltage regulator module VRM 101
It exports powergood (power supply ready signal) signal and exports DC voltage to CPLD 104 and to CPU 103.Voltage adjusts mould
Block VRM 101 is interacted by number multiphase PWM control bus AVSBus with CPU 103, according to different power consumption state, is posted to reg
Different values is written with dynamic regulation output voltage in storage.Baseboard management controller BMC 105 passes through I2C signal monitoring voltage tune
Save the state of module VRM 101.
It finds in practical applications, using the control program of above-mentioned voltage regulator module VRM, readily occurs in server system
Since voltage regulator module VRM cannot export the problem of powergood causes system reboot to fail when system is restarted.
How to solve that powergood cannot be exported when server system is restarted due to voltage regulator module VRM cause be
The problem of system is restarted unsuccessfully, is those skilled in the art's technical issues that need to address.
Summary of the invention
The object of the present invention is to provide the control device and control method of a kind of voltage regulator module VRM, for solve by
The problem of powergood causes system reboot to fail cannot be exported when server system is restarted in voltage regulator module VRM.
In order to solve the above technical problems, the present invention provides the control device of voltage regulator module VRM a kind of, including to electromechanics
Source standby, connect with the voltage regulator module VRM for sending enable signal to the voltage regulator module VRM
CPLD and connect with the voltage regulator module VRM for providing transmission of electricity demand to the voltage regulator module VRM
CPU, further includes:
With the voltage regulator module VRM baseboard management controller BMC connecting and with the baseboard management controller BMC
The switch for being used to control the on-off between the standby power standby and the voltage regulator module VRM of connection；
Wherein, the baseboard management controller BMC is monitoring the voltage value of the voltage regulator module VRM less than first
The switch is controlled when preset value to disconnect.
Optionally, the switch is specially change-over switch.
Optionally, further includes:
The warning device being connect with the baseboard management controller BMC；
Correspondingly, the baseboard management controller BMC is also used in the voltage value for monitoring the voltage regulator module VRM
The warning device is controlled when less than first preset value to alarm.
Optionally, the warning device is specially LED light.
In order to solve the above technical problems, the present invention also provides the control method of voltage regulator module VRM a kind of, based on above-mentioned
Baseboard management controller BMC described in any one, comprising:
The voltage value of monitoring voltage adjustment module VRM；
Judge the voltage value whether less than the first preset value；
If it is, control switch is disconnected to cut off between standby power standby and the voltage regulator module VRM
Connection.
Optionally, further includes:
As the system reboots, it is closed the switch described in control to connect the standby power standby and the voltage and adjust
Module VRM.
Optionally, when the voltage value is less than first preset value, further includes:
The information of output voltage adjustment module VRM failure.
Optionally, further includes:
When the voltage value is greater than first preset value and when less than the second preset value, output voltage adjustment module VRM
The information of fault pre-alarming.
Optionally, further includes:
The voltage value is less than the Fisrt fault event of first preset value and is greater than first preset value and small
Trouble Report is generated in the second event of failure of second preset value；
Export the Trouble Report.
Optionally, further includes:
Receive the setting to first preset value and second preset value.
Conventionally, as generalling use standby power standby in server to system power supply, as long as connection is handed over
Galvanic electricity source, no matter system boot whether, standby power standby keeps power supply state.Voltage regulator module VRM is closed in system
It with the power down of CPU by output voltage setting is low state when machine, due to the power supply of standby power standby, voltage is adjusted
Module VRM can not carry out power down refreshing, and output voltage is locked in low state, so that when the system restarts, voltage adjusts mould
The low voltage of block VRM is insufficient to allow CPU to start, therefore does not export powergood signal, and system reboot is caused to fail.
The control device of voltage regulator module VRM provided by the present invention, compared with the prior art, in addition to standby power
Standby, CPLD, the Yi Jiyu for being used to send enable signal to voltage regulator module VRM being connect with voltage regulator module VRM
Except the CPU for providing transmission of electricity demand to voltage regulator module VRM of voltage regulator module VRM connection, further include and voltage
The baseboard management controller BMC of adjustment module VRM connection and connect with baseboard management controller BMC for controlling standby power
The switch of on-off between standby and voltage regulator module VRM, baseboard management controller BMC are monitoring voltage adjusting mould
When the voltage value of block VRM is less than the first preset value control switch disconnect, guarantee when the system restarts voltage regulator module VRM with
CPU is normally interacted, and avoid causes system reboot to fail since voltage regulator module VRM cannot export powergood
The problem of.The present invention also provides the control methods of voltage regulator module VRM a kind of, have above-mentioned beneficial effect, no longer superfluous herein
It states.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is that the connection structure of voltage regulator module VRM and signal transmit schematic diagram in the prior art；
Fig. 2 is a kind of connection structure and signal of the control device of voltage regulator module VRM provided in an embodiment of the present invention
Transmit schematic diagram；
Fig. 3 is the structural schematic diagram of the control device of another voltage regulator module VRM provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of the control method of voltage regulator module VRM provided in an embodiment of the present invention.
Specific embodiment
Core of the invention is to provide the control device and control method of a kind of voltage regulator module VRM, for solve by
The problem of powergood causes system reboot to fail cannot be exported when server system is restarted in voltage regulator module VRM.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 2 is a kind of connection structure and signal of the control device of voltage regulator module VRM provided in an embodiment of the present invention
Transmit schematic diagram.
Conventionally, as voltage regulator module VRM uses the power supply of standby power standby, fall in system DC
Electricity when the non-power down of AC, has certain probability the phenomenon that system cannot normally restart occur.At this moment because using standby power
When standby is to system power supply, if connection AC power source, no matter system boot whether, standby power standby keeps supplying
Electricity condition.When receiving shutdown command or reset command, server is not disconnected with AC power source, and CPLD is by enable signal
Drag down, system starts gradually power down, and CPU can not be interacted with voltage regulator module VRM again at this time, voltage regulator module VRM with
The reduction of CPU power consumption, the output voltage values in reg register are directed toward low state.Due to voltage regulator module VRM directly with
Standby power standby connection fails power-off and refreshes reg register, then keeps low state.In system restarting, this
Low voltage cannot reach the threshold voltage of system starting, therefore voltage regulator module VRM is not to CPLD output powergood letter
Number, cause system reboot to fail.
After the fault mechanism of the clear failure of the Server Restart as caused by voltage regulator module VRM, solution is first had to
It is that voltage regulator module VRM is influenced by standby power standby power supply and cannot power off the problem of refreshing reg register, this is just
It needs voltage regulator module VRM also can equally power off with CPU in system closedown, power-off refreshing is carried out to reg register.
As shown in Fig. 2, the control device of voltage regulator module VRM provided in an embodiment of the present invention includes standby power
Standby 201, connect with voltage regulator module VRM 101 for voltage regulator module VRM 101 send enable signal
CPLD 104 and connect with voltage regulator module VRM 101 for voltage regulator module VRM 101 provide transmission of electricity need
The CPU 103 asked, unlike the prior art (reference can be made to Fig. 1), further includes:
The baseboard management controller BMC 202 that is connect with voltage regulator module VRM 101 and with baseboard management controller BMC
The switch 203 for being used to control the on-off between standby power standby 201 and voltage regulator module VRM 101 of 202 connections；
Wherein, baseboard management controller BMC 202 is monitoring the voltage value of voltage regulator module VRM 101 less than first
Control switch 203 disconnects when preset value.
In specific implementation, switch 203 is for controlling standby power standby 201 and voltage regulator module VRM 101
Between on-off, can specifically use change-over switch, this is a kind of to use for two-way or the above power supply of two-way or load transfer
Device for switching is formed by more piece contact combinations, these components are fastened by bolts to be mostly used in the electrical apparatus for an entirety
In non-frequently connection and disjunction circuit, powers on and load, measures three-phase voltage and control low capacity asynchronous motor
Positive and negative rotation and star delta starting etc..
Baseboard management controller BMC 202 passes through the state of I2C signal monitoring voltage regulator module VRM 101, and controls
The on-off of switch 203.
First preset value is the voltage that the voltage regulator module VRM 101 of operation maintenance personnel setting can be such that system normally starts
Critical value.Collection voltages adjustment module during 101 VRM of monitoring voltage adjustment module of baseboard management controller BMC 202
The output voltage values of VRM 101, by the output voltage values in analysis of history operation data, the available charge threshold level
Uncertain region, the output voltage values lower than this range necessarily cause system that can not restart, and are higher than the output voltage of this range
Value can guarantee the normal starting of system.On this basis, the first preset value can be uncertain region, be also possible to not know
A value in range.
The interactive mode of voltage regulator module VRM 101 and CPU 103 and CPLD 104 is referred to Fig. 1 and the prior art
Description, details are not described herein.
The control device of voltage regulator module VRM provided by the present invention, compared with the prior art, in addition to standby power
Standby, CPLD, the Yi Jiyu for being used to send enable signal to voltage regulator module VRM being connect with voltage regulator module VRM
Except the CPU for providing transmission of electricity demand to voltage regulator module VRM of voltage regulator module VRM connection, further include and voltage
The baseboard management controller BMC of adjustment module VRM connection and connect with baseboard management controller BMC for controlling standby power
The switch of on-off between standby and voltage regulator module VRM, baseboard management controller BMC are monitoring voltage adjusting mould
When the voltage value of block VRM is less than the first preset value control switch disconnect, guarantee when the system restarts voltage regulator module VRM with
CPU is normally interacted, and avoid causes system reboot to fail since voltage regulator module VRM cannot export powergood
The problem of.
Fig. 3 is the structural schematic diagram of the control device of another voltage regulator module VRM provided in an embodiment of the present invention.?
It is that voltage adjusts mould to prompt client server system reboot failure in another embodiment on the basis of above-described embodiment
Caused by block VRM 101 has locked low voltage, failure cause, voltage regulator module are restarted convenient for user's quick positioning system
The control device of VRM can also include the warning device 301 connecting with baseboard management controller BMC 202；
Correspondingly, baseboard management controller BMC 202 is also used in the voltage value for monitoring voltage regulator module VRM101
Warning device 301 is controlled when less than the first preset value to alarm.
In specific implementation, warning device 301 can be buzzer or indicator light or voice announcer.As warning device can
To use LED light.
The corresponding each embodiment of control device of voltage regulator module VRM as detailed above, on this basis, the present invention
Also disclose the control method of voltage regulator module VRM corresponding with above-mentioned control device.
Fig. 4 is a kind of flow chart of the control method of voltage regulator module VRM provided in an embodiment of the present invention.Such as Fig. 4 institute
Show, the baseboard management controller BMC in the control device of the voltage regulator module VRM provided based on the above embodiment, voltage tune
Section module VRM control method include:
S401: the voltage value of monitoring voltage adjustment module VRM.
S402: judge voltage value whether less than the first preset value；If it is, entering step S403.
S403: control switch is disconnected to cut off the connection between standby power standby and voltage regulator module VRM.
In specific implementation, baseboard management controller BMC passes through the reg of I2C signal monitoring voltage regulator module VRM 101
Voltage value in register, when voltage value is lower than the first preset value, cutting is set to standby power standby and voltage adjusts mould
Switch between block VRM.
Since the embodiment of control method part is corresponded to each other with the embodiment of control device part, control method portion
The embodiment divided refers to the description of the embodiment of control device part, wouldn't repeat here.
On the basis of the above embodiments, the control method of voltage regulator module VRM can also include:
When voltage value is not less than the first preset value and switch is in an off state, control switch is closed to connect to electromechanics
Source standby and voltage regulator module VRM.
By controlling when the system restarts, control switch closure guarantees the normal work of voltage regulator module VRM.
Further, when voltage value is less than the first preset value, the control method of voltage regulator module VRM further include:
The information of output voltage adjustment module VRM failure.
In addition to above-mentioned control device it is as described in the examples using warning device to the failure of output voltage adjustment module VRM
Carry out alarm it is outer, can also using the display screen display voltage regulator module VRM in server fault message window or
The mode for sending the information of output voltage adjustment module VRM failure to specified address prompts user.
It is mentioned in above-mentioned control device embodiment, there may be a uncertain models for the voltage for causing system that cannot start
It encloses, if the first preset value is a value in the uncertain region, it is default that first is higher than in this uncertain region
The voltage value of value is also possible to that system is caused not start normally, this needs that user is prompted to check in time, therefore voltage adjusts mould
The control method of block VRM further include:
When voltage value is greater than the first preset value and when less than the second preset value, output voltage adjustment module VRM fault pre-alarming
Information.
Here the second preset value is greater than the first preset value and the value in above-mentioned uncertain region.
On this basis, since voltage regulator module VRM refreshing is unsuccessfully big as may cause system reboot failure one
Reason, it is necessary to the improper voltage values in the historical data to voltage regulator module VRM to analyze for operation maintenance personnel, therefore electricity
Pressing the control method of adjustment module VRM can also include:
Fisrt fault event by voltage value less than the first preset value and it is greater than the first preset value and to be less than described second pre-
If the second event of failure of value generates Trouble Report；
Export Trouble Report.
Baseboard management controller BMC grabs error-logging information by I2C bus, convenient for operation maintenance personnel positioning, analysis clothes
Business device system operation problem.
Fisrt fault time and the second fault time can be, but not limited to include server model, time of failure, electricity
Voltage value the etc. when normal voltage value of adjustment module VRM, failure being pressed to occur.
Further, the control method of voltage regulator module VRM further include:
Receive the setting to the first preset value and the second preset value.
The control device and control method of a kind of voltage regulator module VRM provided by the present invention have been carried out in detail above
It introduces.Each embodiment is described in a progressive manner in specification, and the highlights of each of the examples are implement with other
The difference of example, the same or similar parts in each embodiment may refer to each other.For the device disclosed in the embodiment,
Since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part illustration
It can.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, may be used also
With several improvements and modifications are made to the present invention, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (10)
1. a kind of control device of voltage regulator module VRM, including the standby power standby and voltage regulator module VRM
Connection connects for the CPLD to voltage regulator module VRM transmission enable signal and with the voltage regulator module VRM
What is connect is used to provide the CPU of transmission of electricity demand to the voltage regulator module VRM, which is characterized in that further include:
It is connect with the voltage regulator module VRM baseboard management controller BMC connecting and with the baseboard management controller BMC
For controlling the switch of on-off between the standby power standby and the voltage regulator module VRM；
Wherein, the baseboard management controller BMC is default less than first in the voltage value for monitoring the voltage regulator module VRM
The switch is controlled when value to disconnect.
2. control device according to claim 1, which is characterized in that the switch is specially change-over switch.
3. control device according to claim 1, which is characterized in that further include:
The warning device being connect with the baseboard management controller BMC；
Correspondingly, the baseboard management controller BMC is also used to monitoring that the voltage value of the voltage regulator module VRM is less than
The warning device is controlled when first preset value to alarm.
4. control device according to claim 3, which is characterized in that the warning device is specially LED light.
5. a kind of control method of voltage regulator module VRM, which is characterized in that based on described in Claims 1-4 any one
Baseboard management controller BMC, comprising:
The voltage value of monitoring voltage adjustment module VRM；
Judge the voltage value whether less than the first preset value；
If it is, control switch is disconnected to cut off the company between standby power standby and the voltage regulator module VRM
It connects.
6. control method according to claim 5, which is characterized in that further include:
When the voltage value is not less than first preset value and the switch is in an off state, closed the switch described in control
To connect the standby power standby and the voltage regulator module VRM.
7. control method according to claim 5, which is characterized in that when the voltage value is less than first preset value
When, further includes:
The information of output voltage adjustment module VRM failure.
8. control method according to claim 5, which is characterized in that further include:
When the voltage value is greater than first preset value and when less than the second preset value, output voltage adjustment module VRM failure
The information of early warning.
9. control method according to claim 8, which is characterized in that further include:
The voltage value is less than the Fisrt fault event of first preset value and is greater than first preset value and is less than institute
The second event of failure for stating the second preset value generates Trouble Report；
Export the Trouble Report.
10. control method according to claim 8, which is characterized in that further include:
Receive the setting to first preset value and second preset value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910188780.XA CN109917895B (en) | 2019-03-13 | 2019-03-13 | Control device and control method for voltage regulation module VRM |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910188780.XA CN109917895B (en) | 2019-03-13 | 2019-03-13 | Control device and control method for voltage regulation module VRM |
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| CN109917895A true CN109917895A (en) | 2019-06-21 |
| CN109917895B CN109917895B (en) | 2021-01-22 |
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| Publication number | Publication date |
|---|---|
| CN109917895B (en) | 2021-01-22 |
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