CN113867510B - System and method for server power supply transient load response and server - Google Patents
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Abstract
The invention provides a system, a method and a server for transient load response of server power supply, wherein the system comprises a power supply unit, a control unit, a detection unit and a load; the power supply unit comprises a plurality of redundant power supply modules; the redundant power supply module is used for supplying power to the load in a parallel operation state; all redundant power supply modules are connected with the input end of the control unit through instantaneous current detection signals; the control unit is connected with the load through the detection unit; the detection unit is used for acquiring the input current of the load; the control unit is used for comparing the input current of the load with the rated current, and when the input current is larger than the rated current, the transient load response is realized by adjusting the level of the transient current detection signal. A method for responding to the transient load of the server power supply and a server are also provided based on the system for responding to the transient load of the server power supply. The invention can reduce the shortage of the dynamic response specification of the power supply type selection and reduce the cost increase of the power supply type selection caused by the shortage of the dynamic response.
Description
Technical Field
The invention belongs to the technical field of server power supply, and particularly relates to a system, a method and a server for transient load response of server power supply.
Background
As the performance and the power consumption of the server technology and related key electronic components are improved, the size of the server is compressed, and the whole power supply of the server power supply module faces new challenges; the power supply application of the CPU and the GPU is more severe, for example, the specification requirement in the CPU application requires the support of the PMax requirement of the component (namely, the component has the condition that the input power exceeds the standard rated value under the pressurization and other special working conditions, but the time is in the microsecond and millisecond level), and the similar instantaneous power consumption (microsecond and millisecond level) requirement is also provided in the power supply specification of the GPU; the load power consumption application period is shorter, but if the instantaneous load response is not timely, the power supply output is over-current or the CPU and the GPU are in card falling down, but if the power supply is estimated according to rated power, the excessive design specification brings higher cost pressure, wherein the CPU is Central Processing Unit, and the CPU is a central processing unit; GPU, graphics Processing Unit, graphics processor.
At present, when the power supply design of the server is carried out, the maximum power consumption requirement of the server system is evaluated, the power supply is selected on the basis, and the limit instantaneous load power consumption of the CPU and the GPU needs to be met by considering the overcurrent and the overpower design of the units. For example, the total power consumption of the components of the server itself of the server powered by 1+1 redundancy is 1000W, but two CPUs with rated power of 250W are selected to have 5ms 110W of instantaneous power consumption requirement; then the power supply is required to meet the requirement of 1000W rated power consumption and the instantaneous over-power requirement of 5ms of 600W; when the type is selected, a power supply with 1000W rated power and 160%5ms overcurrent capacity is generally selected, but in practical application, the power supply design with strict overcurrent requirements is difficult to achieve the intelligent selection of the power supply with 1200W rated power and 140%5ms overcurrent capacity, so that the 200W rated power can be applied in an idle state for a long time; as shown in fig. 1, a schematic diagram of a redundant power supply design of a 1+1 server in the prior art is given; a comparison table of rated power versus Pmax power for a conventional power CPU in the prior art is given in fig. 2.
In the prior art, the over-power and over-current design is needed to meet the instantaneous power requirement of a CPU or a GPU, but the rated power value of the power supply must be sacrificed to meet the instantaneous power consumption requirement of the CPU or the GPU if the over-current and over-power design of the power supply still cannot meet the instantaneous power consumption requirement of the CPU or the GPU, in addition, the dynamic current equalizing capacity of a power supply module under the working condition of the instantaneous load is influenced because the load is instantaneous, and if the power supply module is not equalized under the non-redundant working condition or the 1+1 redundant power supply working condition, single power supply over-current protection downtime occurs easily; with the gradual upgrading of server configuration and technology, the power consumption of the server is higher, the instantaneous power consumption pressure is higher, and the cost pressure brought by power consumption type selection of the power supply is higher.
Disclosure of Invention
In order to solve the technical problems, the invention provides a system, a method and a server for power supply transient load response of a server, which are used for reducing the shortage of power supply type dynamic response specifications and reducing the increase of power supply type cost caused by the shortage of dynamic response.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a system for supplying power to transient load response of a server comprises a power supply unit, a control unit, a detection unit and a load;
the power supply unit comprises a plurality of redundant power supply modules; the redundant power supply module is used for supplying power to a load in a parallel operation state; all redundant power supply modules are connected with the input end of the control unit through instantaneous current detection signals; the control unit is connected with a load through the detection unit; the detection unit is used for acquiring the input current of the load; the control unit is used for comparing the input current of the load with the rated current, and when the input current is larger than the rated current, transient load response is realized by adjusting the level of the transient current detection signal.
Furthermore, when the input current of the load is compared with the rated current, the control unit pulls down the instantaneous current detection signal to enable the redundant power supply module to enter a peak-time power response state, increases the output voltage of the redundant power supply module and achieves transient load response.
Further, the redundant power supply modules include, but are not limited to, a 1+1 power supply server and a 2+2 power supply server.
Further, the detection unit includes, but is not limited to, a CPLD and an FPGA.
The invention also provides a method for responding to the transient load of the power supply of the server, which is realized based on a system for responding to the transient load of the power supply of the server and comprises the following steps:
load information is acquired, and an instantaneous current detection signal trigger point is set;
acquiring the input current of a load, and judging whether the input current of the load is larger than a current value corresponding to an instantaneous current detection signal contact; and if the trigger value of the instantaneous current detection signal is larger than the trigger value of the instantaneous current detection signal, the instantaneous load response is realized by adjusting the height of the instantaneous current detection signal.
Further, the current value corresponding to the instantaneous current detection signal contact is the rated power of the load.
Further, by adjusting the level of the transient current detection signal, the process of realizing transient load response is as follows: and comparing the input current and rated current of the load, and when the input current and the rated current are larger than the rated current, pulling down the instantaneous current detection signal to enable the redundant power supply module to enter a peak-time power response state, and increasing the output voltage of the redundant power supply module to realize transient load response.
Further, the method further comprises the steps of obtaining load information and setting an instantaneous current detection signal trigger point and delay time;
comparing the first input current of the load with the rated current, and when the first input current is larger than the rated current, pulling down the instantaneous current detection signal to enable the redundant power supply module to enter a peak-time power response state;
detecting a second input current of the load after the delay time; judging the magnitude of the second input current and the rated current; if the second input current is larger than the rated current, the redundant power supply module enters a peak-time power response state again; if the second input current is smaller than the rated current, the instantaneous current detection signal is restored after a delay time.
Further, the increasing the output voltage of the redundant power supply module, the realizing transient load response is specifically: the output voltage of the redundant power supply module is increased by 0.1V, so that transient load response is realized.
The invention also provides a server, which comprises a system for the transient load response of the power supply of the server.
The effects provided in the summary of the invention are merely effects of embodiments, not all effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
the invention provides a system, a method and a server for transient load response of server power supply, wherein the system comprises a power supply unit, a control unit, a detection unit and a load; the power supply unit comprises a plurality of redundant power supply modules; the redundant power supply module is used for supplying power to the load in a parallel operation state; all redundant power supply modules are connected with the input end of the control unit through instantaneous current detection signals; the control unit is connected with the load through the detection unit; the detection unit is used for acquiring the input current of the load; the control unit is used for comparing the input current of the load with the rated current, and when the input current is larger than the rated current, the transient load response is realized by adjusting the level of the transient current detection signal. A method for responding to the transient load of the server power supply and a server are also provided based on the system for responding to the transient load of the server power supply. According to the invention, the response design of the power supply during the CPU or GPU instantaneous dynamic load is completed by adding the hardware design of the server main board and the PSU hardware design and matching with the logic design of the CPLD; the main logic of the design is that current detection when a CPU or a GPU is powered is used for identifying instant power consumption surge, the instant power consumption surge is transmitted to CPLD processing after the instant current surge is detected, the newly added E_PEAK signal of the PSU is pulled down after the logic processing of the CPLD, all power supplies enter an E_PEAK state after detecting that the E_PEAK signal is pulled down, and the power supply in the E_PEAK state carries out the directional adjustment of transient load aiming at dynamic current sharing and output voltage so as to realize transient load response. The shortage of the power supply type dynamic response specification is reduced, and the cost increase of the power supply type caused by the shortage of the dynamic response is reduced.
Drawings
FIG. 1 shows a schematic diagram of a prior art 1+1 server redundant power supply design;
fig. 2 shows a table of rated power versus Pmax power for a conventional power CPU in the prior art.
FIG. 3 is a schematic diagram of a power supply transient load response connection implemented by a 1+1 power supply server according to embodiment 1 of the present invention;
fig. 4 is a flowchart of a method for providing a transient load response of a server according to embodiment 2 of the present invention.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily obscure the present invention.
Example 1
The embodiment 1 of the invention provides a system for transient load response of server power supply, which comprises a power supply unit, a control unit, a detection unit and a load;
the power supply unit comprises a plurality of redundant power supply modules; the redundant power supply module is used for supplying power to the load in a parallel operation state; all redundant power supply modules are connected with the input end of the control unit through instantaneous current detection signals; the control unit is connected with the load through the detection unit; the detection unit is used for acquiring the input current of the load; the control unit is used for comparing the input current of the load with the rated current, and when the input current is larger than the rated current, the transient load response is realized by adjusting the level of the transient current detection signal.
Fig. 3 is a schematic diagram of a power supply transient load response connection implemented by using a 1+1 power supply server according to embodiment 1 of the present invention. The redundant power supply module includes CRPS0 and CRPS1.
A first overcurrent detection circuit is established between the CRPS0 and the control unit, and is communicated with the control unit through an instantaneous current detection signal E_PEAK signal. The control unit in the present application employs an editable logic chip, including but not limited to a CPLD and an FPGA. A second overcurrent detection circuit is established between the CRPS1 and the control unit, and is communicated with the control unit through an instantaneous current detection signal E_PEAK signal. And in the parallel operation state of the redundant power supply module, after the E_PEAK signals of the two paths are pulled down, the redundant power supply module enters a PEAK power response state, namely an E_PEAK state, and E_PEAK signals of all power supplies are connected together in the main board design, so that all the power supplies can synchronously enter the E_PEAK state after the system detects that the system load exceeds the specification.
Loads in this application include, but are not limited to, CPUs and GPUs. The detection units are a first detection unit and a second detection unit respectively, and the first detection unit is used for detecting the input current of the CPU. The second detection unit is used for detecting the input current of the GPU.
In the application, the control unit compares the input current of the CPU with the rated current of the CPU, and when the input current of the CPU is larger than the rated current of the CPU, the instantaneous current detection signal is pulled down, so that the redundant power supply module enters a peak-time power response state, the output voltage of the redundant power supply module is increased, and the transient load response is realized. The power E_PEAK state actively regulates the output power to 0.1V and increases the gain of loop response for the upcoming transient overshoot, and the E_PEAK state is specially optimized for and dynamically equalizing current to ensure transient dynamic equalizing current.
Or the control unit compares the input current of the GPU with the rated current of the GPU, and when the input current of the GPU is larger than the rated current of the GPU, the instantaneous current detection signal is pulled down, so that the redundant power supply module enters a peak-time power response state, the output voltage of the redundant power supply module is increased, and the transient load response is realized. The power E_PEAK state actively regulates the output power to 0.1V and increases the gain of loop response for the upcoming transient overshoot, and the E_PEAK state is specially optimized for and dynamically equalizing current to ensure transient dynamic equalizing current.
The detection unit can also detect the direct current output voltage of the redundant power supply module.
According to the invention, the response design of the power supply in the process of CPU/GPU instantaneous dynamic load is completed by adding the hardware design of the server main board and the PSU hardware design and matching with the logic design of the CPLD; the main logic of the design is that current detection when a CPU/GPU is powered is increased is used for identifying instant power consumption surge, the instant power consumption surge is transmitted to CPLD processing after the instant current surge is detected, the newly increased E_PEAK signal of PSU is pulled down after the logic processing of the CPLD, all power supplies enter an E_PEAK state after detecting that the E_PEAK signal is pulled down, and the power supply in the E_PEAK state carries out directional adjustment of transient load aiming at dynamic current sharing and output voltage so as to realize transient load response. This reduces the shortage of power supply type dynamic response specifications and reduces the cost increase of power supply type selection caused by the shortage of dynamic response.
The embodiment 1 of the invention provides a system for realizing power supply transient load response of a 1+1 power supply server, and the protection scope of the invention is not limited to the 1+1 power supply server, and can be realized by adopting a 2+2 power supply server. If a 2+2 power supply server is adopted, CRPS0, CRPS1, CRPS2 and CRPS3 all communicate with the control unit through an overcurrent detection circuit, and other realized processes are the same as those of the 1+1 power supply server.
Example 2
Based on the system for transient load response of server power supply provided in the embodiment 1 of the present invention, the embodiment 2 of the present invention further provides a method for transient load response of server power supply, load information is obtained, and a trigger point of an instantaneous current detection signal is set; acquiring the input current of a load, and judging whether the input current of the load is larger than a current value corresponding to an instantaneous current detection signal contact; and if the trigger value of the instantaneous current detection signal is larger than the trigger value of the instantaneous current detection signal, the instantaneous load response is realized by adjusting the height of the instantaneous current detection signal. The current value corresponding to the instantaneous current detection signal contact is the rated power of the load.
The transient load response is realized by adjusting the height of the transient current detection signal: and comparing the input current and rated current of the load, and when the input current and the rated current are larger than the rated current, pulling down the instantaneous current detection signal to enable the redundant power supply module to enter a peak-time power response state, and increasing the output voltage of the redundant power supply module to realize transient load response.
The method further comprises the steps of obtaining load information, and setting an instantaneous current detection signal trigger point and delay time;
comparing the first input current of the load with the rated current, and when the first input current is larger than the rated current, pulling down the instantaneous current detection signal to enable the redundant power supply module to enter a peak-time power response state;
detecting a second input current of the load after the delay time; judging the magnitude of the second input current and the rated current; if the second input current is larger than the rated current, the redundant power supply module enters a peak-time power response state again; if the second input current is smaller than the rated current, the instantaneous current detection signal is restored after a delay time.
The output voltage of the redundant power supply module is increased, and the transient load response is realized specifically as follows: the output voltage of the redundant power supply module is increased by 0.1V, so that transient load response is realized.
If 4 is a flow chart of a method for server power transient load response in accordance with embodiment 2 of the present invention.
In step S401, the flow of processing is started.
In step S402, the CPLD sets the power supply instantaneous current detection signal trigger point and the delay time by detecting the information of the CPU or the GPU.
In step S403, the detection unit detects an input current of the CPU or the GPU.
In step S404, it is determined whether the input current of the CPU is greater than the current value corresponding to the CPU instantaneous current detection signal contact; or judging whether the input current of the GPU is larger than the current value corresponding to the instantaneous current detection signal contact of the GPU, wherein the current value corresponding to the instantaneous current detection signal contact is the rated power of the load. If so, step S205 is performed, otherwise step S206 is performed.
In step S405, the control unit pulls down the instantaneous current detection signal e_peak signal.
In step S406, the delay is followed by returning to step S203 again.
In step S407, the power supply detects that the e_peak signal enters an e_peak state, i.e., a PEAK-time power response state.
In step S408, after the delay time, detecting a second input current of the CPU or GPU; judging the magnitude of the second input current and the rated current;
in step S409, the second input current and the rated current are determined; if the second input current is greater than the rated current, returning to step S207 to make the redundant power supply module enter the peak-time power response state again; if the second input current is smaller than the rated current, step S210 is performed.
In step S410, after the delay time, the instantaneous current detection signal is restored.
According to the invention, the response design of the power supply in the process of CPU/GPU instantaneous dynamic load is completed by adding the hardware design of the server main board and the PSU hardware design and matching with the logic design of the CPLD; the main logic of the design is that current detection when a CPU/GPU is powered is increased is used for identifying instant power consumption surge, the instant power consumption surge is transmitted to CPLD processing after the instant current surge is detected, the newly increased E_PEAK signal of PSU is pulled down after the logic processing of the CPLD, all power supplies enter an E_PEAK state after detecting that the E_PEAK signal is pulled down, and the power supply in the E_PEAK state carries out directional adjustment of transient load aiming at dynamic current sharing and output voltage so as to realize transient load response.
The E_PEAK state conversion of the primary PSU is added by adding the current detection of the CPU/GPU device with higher transient load and combining the software control of the CPLD, and the transient load characteristics of the CPU and the GPU are met by adding the transient load response under the special working mode and the unified mode conversion under the parallel working condition, so that the defect of the power supply type selection dynamic response specification is reduced, and the cost increase of power supply type selection caused by the defect of dynamic response is reduced.
Example 3
Embodiment 3 of the invention proposes a server comprising a system for server power transient load response. The system comprises a power supply unit, a control unit, a detection unit and a load;
the power supply unit comprises a plurality of redundant power supply modules; the redundant power supply module is used for supplying power to the load in a parallel operation state; all redundant power supply modules are connected with the input end of the control unit through instantaneous current detection signals; the control unit is connected with the load through the detection unit; the detection unit is used for acquiring the input current of the load; the control unit is used for comparing the input current of the load with the rated current, and when the input current is larger than the rated current, the transient load response is realized by adjusting the level of the transient current detection signal.
When the input current of the load is compared with the rated current, the control unit pulls down the instantaneous current detection signal to enable the redundant power supply module to enter a peak-time power response state, increases the output voltage of the redundant power supply module and achieves transient load response.
Redundant power modules include, but are not limited to, a 1+1 power server and a 2+2 power server.
Detection units include, but are not limited to, CPLDs and FPGAs.
Loads include, but are not limited to, CPUs and GPUs.
It is noted that 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. Moreover, 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 is inherent to. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. In addition, the parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of the corresponding technical solutions in the prior art, are not described in detail, so that redundant descriptions are avoided.
While the specific embodiments of the present invention have been described above with reference to the drawings, the scope of the present invention is not limited thereto. Other modifications and variations to the present invention will be apparent to those of skill in the art upon review of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. On the basis of the technical scheme of the invention, various modifications or variations which can be made by the person skilled in the art without the need of creative efforts are still within the protection scope of the invention.
Claims (8)
1. The system for the transient load response of the server power supply is characterized by comprising a power supply unit, a control unit, a detection unit and a load;
the power supply unit comprises a plurality of redundant power supply modules; the redundant power supply module is used for supplying power to a load in a parallel operation state; all redundant power supply modules are connected with the input end of the control unit through instantaneous current detection signals; the control unit is connected with a load through the detection unit; the detection unit is used for acquiring the input current of the load; the control unit is used for comparing the input current of the load with the rated current, and when the input current is larger than the rated current, the transient load response is realized by adjusting the level of the transient current detection signal;
when the input current of the load is compared with the rated current, the control unit pulls down the instantaneous current detection signal to enable the redundant power supply module to enter a peak-time power response state, increases the output voltage of the redundant power supply module and achieves transient load response.
2. A server powered transient load response system according to claim 1, wherein the redundant power supply modules include, but are not limited to, a 1+1 power supply server and a 2+2 power supply server.
3. A server powered transient load response system according to claim 1, wherein the detection unit includes, but is not limited to, a CPLD and an FPGA.
4. A method of server powered transient load response based on a system of server powered transient load response according to any of claims 1 to 3, comprising the steps of:
load information is acquired, and an instantaneous current detection signal trigger point is set;
acquiring the input current of a load, and judging whether the input current of the load is larger than a current value corresponding to an instantaneous current detection signal contact; if the current detection signal is larger than the trigger value of the instantaneous current detection signal, the instantaneous load response is realized by adjusting the height of the instantaneous current detection signal; the transient load response is realized by adjusting the height of the transient current detection signal: and comparing the input current and rated current of the load, and when the input current and the rated current are larger than the rated current, pulling down the instantaneous current detection signal to enable the redundant power supply module to enter a peak-time power response state, and increasing the output voltage of the redundant power supply module to realize transient load response.
5. The method of claim 4, wherein the current value corresponding to the instantaneous current detection signal contact is the rated power of the load.
6. The method of claim 4, further comprising obtaining load information, setting a transient current detection signal trigger point and a delay time;
comparing the first input current of the load with the rated current, and when the first input current is larger than the rated current, pulling down the instantaneous current detection signal to enable the redundant power supply module to enter a peak-time power response state;
detecting a second input current of the load after the delay time; judging the magnitude of the second input current and the rated current; if the second input current is larger than the rated current, the redundant power supply module enters a peak-time power response state again; if the second input current is smaller than the rated current, the instantaneous current detection signal is restored after a delay time.
7. The method of claim 4, wherein the increasing the output voltage of the redundant power supply module achieves a transient load response specifically comprising: the output voltage of the redundant power supply module is increased by 0.1V, so that transient load response is realized.
8. A server comprising a system for server power transient load response according to any of claims 1 to 3.
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| CN111475288A (en) * | 2020-03-27 | 2020-07-31 | 苏州浪潮智能科技有限公司 | Server and power supply protection system thereof |
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| CN110147155A (en) * | 2019-05-21 | 2019-08-20 | 苏州浪潮智能科技有限公司 | Server power supply cold redundancy control method, device and BMC based on BMC |
| CN111475288A (en) * | 2020-03-27 | 2020-07-31 | 苏州浪潮智能科技有限公司 | Server and power supply protection system thereof |
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