Power supply system of server

Abstract

The invention discloses a power supply system of a server, and relates to the technical field of computers, a plurality of power supplies connected in parallel are deployed in the power supply system of the server, and when the server has a power supply demand, a target power supply in the plurality of power supplies outputs electric energy parameters according to the electric energy parameters output by the plurality of power supplies. And adjusting the electric energy parameter output by the target power supply into the reference electric energy parameter according to the difference between the electric energy output by the target power supply and the electric energy output by the power supply allowed by the power supply system, so as to realize the balance of the output electric energy among the plurality of power supplies in the power supply system. The technical problem of low power supply control efficiency of the power supply in the prior art is solved, and the technical effect of improving the power supply control efficiency of the power supply is achieved.

Description

Technical Field

[0001] The present application relates to the field of computer technology, and in particular to a power supply system for a server. Background Art

[0002] With the rapid development of Internet technology and the deepening of digital transformation, the amount of data has shown explosive growth, which has led to a sharp increase in the demand for servers. At present, the server has different operating states due to the different business volumes carried during operation, and the server will have different power requirements under different operating states. In order to better ensure the power requirements during the operation of the server, the relevant technology deploys a power supply system composed of multiple parallel power supplies for the server, so that the power required by the server is evenly distributed on multiple power supplies. However, in the process of the power supply system supplying power to the server, due to the impedance difference between each parallel power supply and the server connection point, there is a significant difference in power output between the power supplies, which damages the power supply and seriously affects the service life of the power supply. Summary of the invention

[0003] The present application provides a power supply system for a server, so as to at least solve the problem of low power supply control efficiency of a power supply in the related art.

[0004] The present application provides a power supply system for a server, comprising: a plurality of power supplies, the plurality of power supplies are connected in parallel, and the power supply system is used to connect the server;

[0005] Multiple power supplies, used to supply power to the target server according to the power demand of the connected target server, wherein the power demand is used to indicate the power demand of the server;

[0006] A target power supply among multiple power supplies is used to adjust the power parameters output by the target power supply to reference power parameters according to the power parameters output by the power supply and the power supply parameters of the power supply system, wherein the power supply parameters are used to indicate the difference between the power energies that the power supply system allows the power supply to output.

[0007] Through this application, multiple parallel-connected power supplies are deployed in the power supply system of the server. When the server has a power supply demand, the target power supply among the multiple power supplies adjusts the power parameters output by the target power supply to the reference power parameters according to the power parameters output by the power supply and the power parameters of the power supply system, so as to adjust the power parameters output by the power supply according to the difference between the power parameters of the power supply and the power that the power supply system allows the power supply to output, ensure that the output power between the power supplies is balanced after adjusting the power parameters, and avoid the problem of large differences in power output between the power supplies during the power parameter adjustment process. Therefore, the technical problem of low power supply control efficiency of the power supply in the related technology can be solved, and the technical effect of improving the power supply control efficiency of the power supply can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0009] Figure 1 A hardware connection diagram of a power supply system of a server according to an embodiment of the present application;

[0010] Figure 2 is a schematic diagram of a parameter converter of a power supply system of a server according to an embodiment of the present application;

[0011] Figure 3 A schematic diagram of a filter circuit of a power supply system of a server according to an embodiment of the present application Figure 1 ;

[0012] Figure 4 A circuit connection diagram of a current filter of a power supply system of a server according to an embodiment of the present application;

[0013] Figure 5 A circuit connection diagram of a first converter of a power supply system of a server according to an embodiment of the present application;

[0014] Figure 6 A schematic diagram of a filter circuit of a power supply system of a server according to an embodiment of the present application Figure 2 ;

[0015] Figure 7 A circuit connection diagram of a voltage filter of a power supply system of a server according to an embodiment of the present application;

[0016] Figure 8 is a circuit connection diagram of a second converter of a power supply system of a server according to an embodiment of the present application;

[0017] Fig. 9 A power supply redundancy architecture diagram of a server power supply dynamic current balancing mechanism according to an embodiment of the present application;

[0018] Fig.10 A schematic diagram of dynamic current sharing according to an embodiment of the present application;

[0019] Fig.11 A block diagram of a power stage architecture of a switching power supply according to an embodiment of the present application;

[0020] Fig.12 A schematic diagram of a digital power supply according to an embodiment of the present application;

[0021] Fig.13 A block diagram of a digital power supply architecture according to an embodiment of the present application;

[0022] Fig.14 A dynamic adjustment logic diagram according to an embodiment of the present application;

[0023] Fig.15 A logic diagram of dynamic adjustment of output voltage according to an embodiment of the present application;

[0024] Fig.16 A logic diagram of dynamic output current regulation according to an embodiment of the present application;

[0025] Fig.17 is a schematic diagram of a dynamically adjusted average flow rate according to an embodiment of the present application;

[0026] Fig.18 is a schematic diagram of a feedback adjustment circuit according to an embodiment of the present application;

[0027] Fig.19 A waveform impact schematic diagram according to an embodiment of the present application;

[0028] Fig. 20 A power supply parallel current resonance waveform diagram according to an embodiment of the present application;

[0029] Fig.21 A current dynamic vibration reduction architecture diagram according to an embodiment of the present application;

[0030] Fig. 22 A logic diagram of a current dynamic current balancing and vibration reduction function according to an embodiment of the present application;

[0031] Fig.23 Schematic diagram of two detection paths of a vibration reduction module circuit according to an embodiment of the present application;

[0032] Fig.24is a circuit diagram of a vibration reduction module circuit according to an embodiment of the present application;

[0033] Fig.25 is a schematic diagram of level changes of a vibration reduction module circuit according to an embodiment of the present application;

[0034] Fig.26 A circuit diagram of a comparator circuit for detecting an output current of a vibration reduction module circuit according to an embodiment of the present application;

[0035] Fig. 27 is an equivalent circuit diagram of a current detection path comparator according to an embodiment of the present application;

[0036] Fig.28 A circuit diagram of a comparator circuit for detecting an output voltage of a vibration reduction module circuit according to an embodiment of the present application;

[0037] Fig.29 is an equivalent circuit diagram of a voltage detection path comparator according to an embodiment of the present application;

[0038] Fig.30 is a waveform diagram of using a vibration reduction module according to an embodiment of the present application;

[0039] Fig.31 A waveform diagram of a dynamic current resonance phenomenon of a power supply in parallel according to an embodiment of the present application;

[0040] Fig.32 It is a waveform diagram after improving the resonance phenomenon according to an embodiment of the present application. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] It should be noted that, in the description of this application, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence.

[0043] The technical terms involved in the embodiments of the present application are explained below:

[0044] Server PSU (Server Power Supply Unit): Server power supply, or server power supply for short.

[0045] CPU (Central Processing Unit): central processing unit.

[0046] GPU (Graphics Processing Unit): Graphics processor.

[0047] MCU (Microcontroller Unit): microprocessor.

[0048] EDPp (Electric Design Peak Power): Electrical design peak power.

[0049] Power Redundancy: Power redundancy.

[0050] Current share: refers to the process of controlling the current distribution of the power supply output to flow evenly through each resistor or load device when passing through multiple parallel resistors or load devices in the circuit.

[0051] Pulse-width modulation (PWM): PWM is a technique for converting analog signals into pulses. Generally, the pulse cycle is fixed after conversion, but the duty cycle of the pulse changes according to the size of the analog signal.

[0052] Duty Ratio (Duty Cycle): It is a concept in many fields such as radio frequency, microwave circuit, low-frequency AC and DC current, which indicates the ratio of working time to total time in one cycle.

[0053] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0054] The embodiment of the present application provides a power supply system for a server. Figure 1 FIG. 1 is a hardware connection diagram of a power supply system of a server according to an embodiment of the present application, such as Figure 1 As shown, the system includes: a plurality of power supplies, the plurality of power supplies are connected in parallel, and the power supply system is used to connect to the server;

[0055] Multiple power supplies, used to supply power to the target server according to the power demand of the connected target server, wherein the power demand is used to indicate the power demand of the server;

[0056] A target power supply among multiple power supplies is used to adjust the power parameters output by the target power supply to reference power parameters according to the power parameters output by the power supply and the power supply parameters of the power supply system, wherein the power supply parameters are used to indicate the difference between the power energies that the power supply system allows the power supply to output.

[0057] Through this application, multiple parallel-connected power supplies are deployed in the power supply system of the server. When the server has a power supply demand, the target power supply among the multiple power supplies adjusts the power parameters output by the target power supply to the reference power parameters according to the power parameters output by the power supply and the power parameters of the power supply system, so as to adjust the power parameters output by the power supply according to the difference between the power parameters of the power supply and the power that the power supply system allows the power supply to output, ensure that the output power between the power supplies is balanced after adjusting the power parameters, and avoid the problem of large differences in power output between the power supplies during the power parameter adjustment process. Therefore, the technical problem of low power supply control efficiency of the power supply in the related technology can be solved, and the technical effect of improving the power supply control efficiency of the power supply can be achieved.

[0058] Optionally, in an embodiment of the present application, the electric energy parameters output by the power supply are parameters used to indicate the state of the electric energy output by the power supply, and the electric energy parameters may include but are not limited to voltage values, current values, and power values ​​output by the power supply.

[0059] Optionally, in an embodiment of the present application, the power supply parameter of the power supply system is a parameter used to characterize the difference between the current or voltage that the power supply system allows the power supply to output at a single time. The power supply parameter may include, but is not limited to, the load current average rate of the power supply or the voltage regulation rate of the power supply. The load current average rate of the power supply defines the degree of deviation between the actual output current of each power supply and the theoretical average current during the power supply process of the parallel power supply; the voltage regulation rate reflects the degree of response of the actual output voltage of the power supply to the change of the load current, and the adaptability to the input voltage fluctuation.

[0060] Optionally, in an embodiment of the present application, multiple power supplies are connected in parallel, so that the multiple power supplies can share power parameters through the connection relationship between the power supplies, so that the target power supply can obtain power parameters output by other power supplies in the multiple power supplies in addition to its own power parameters, such as Figure 1 As shown, multiple power supplies realize the power load sharing function by connecting all load sharing bus pins together, so that any power supply in the power supply system can obtain the current value or voltage value actually output by each power supply in real time.

[0061] Optionally, in an embodiment of the present application, when multiple power supplies are connected in parallel to supply power to the same load (such as the CPU, GPU or other components inside the server), the ideal distribution of electrical energy should be that all power supplies share the electrical energy equally, such as the equal sharing of current. This state is called "current balancing" or "current sharing". Power balancing can prevent failures caused by overload of a single power supply and ensure the stability and redundancy of the power supply system. However, in actual applications, due to individual differences between the power supplies (such as impedance differences between the connection points between the power supplies and the server), the current output of each power supply will be significantly uneven, which may shorten the life of the power supply, thereby affecting the stable operation of the entire server. The present application is to use each power supply in the power supply system as its own master control, and collect the current value or voltage value output by multiple power supplies in the power supply system in real time, as well as the power supply parameters of the power supply system itself, such as the load current average rate of the power supply or the voltage regulation rate of the power supply, and then adjust the current value output by each power supply itself to be close to the average current value output by the entire power supply system, or adjust the voltage value output by each power supply itself to be close to the preset voltage value output by the entire power supply system, so as to achieve average sharing of electric energy by all power supplies.

[0062] Optionally, in the embodiment of the present application, the process of adjusting the target power supply's own power parameters to the reference power parameters is a multi-round iterative adjustment process that is precisely controlled based on the power parameters output by multiple power supplies and the power supply parameters of the power supply system itself. The specific iterative adjustment process can be implemented by the following steps:

[0063] S1: The target power supply obtains the electric energy parameters currently output in real time by each power supply in the power supply system through the load sharing bus, wherein the electric energy parameters may include but are not limited to the current value or voltage value output by the power supply; and calculates the first output electric energy of all the power supplies in the power supply system in the first adjustment round, wherein the first output electric energy is used to indicate the average output current value or preset output voltage value of all the power supplies in the power supply system in the first adjustment round.

[0064] S2: The target power supply obtains the current power supply parameters of the power supply system, wherein the power supply parameters may include but are not limited to the load current averaging rate or voltage regulation rate of the power supply.

[0065] S3: The target power supply calculates a first power adjustment amount corresponding to a first adjustment round based on the first output power of all power supplies in the power supply system and the power supply parameters of the power supply system, and adjusts the first power parameter currently output by the target power supply to a second power parameter according to the first power adjustment amount.

[0066] S41: when the difference between the second electric energy parameter and the first output electric energy is less than the target difference threshold, end the adjustment process;

[0067] S42: When the difference between the second power parameter and the first output power is greater than or equal to the target difference threshold, start a second adjustment round and repeat steps S1-S4.

[0068] Through the above multiple rounds of iterative adjustment process, in the above adjustment process, each power supply in the power supply system acts as the main control device for adjusting its own power parameters, and adjusts its own power parameters through multiple rounds of iterative adjustments through the power parameters output by all power supplies and the power supply parameters of the power supply system, thereby realizing multiple rounds of dynamic adjustment of the power parameters of the entire power supply system. In each adjustment round, the target power supply can determine the power parameter adjustment amount of the current round according to the current actual output power and power supply parameters of the power supply in the power supply system (that is, the power adjustment amount is determined according to the output state at the current moment, and the adjustment amount in different rounds is dynamically changed), and dynamically adjust the output power parameters to the reference power parameters, which can effectively realize the balanced distribution of current in the multi-power parallel system. This process ensures that even under the condition of dynamic changes in system load (such as GPU overclocking), the output power of each power supply can quickly converge to the current average output power of the power supply system, thereby significantly reducing the problem of uneven power output of each power supply and improving the stability and power supply efficiency of the entire power supply system.

[0069] Optionally, in an embodiment of the present application, when there is a large difference in the output power between the power supplies of the power supply system, it will cause the actual output power of some power supplies in the power supply system to exceed the rated output power of the power supply, thereby causing damage to the power supply components of the power supply and affecting the service life of the power supply. When there is a large mutation in the power supply demand of the server, the power difference between the power supplies is large, so the target power supply can perform the following operations: detect the change in the power output of the target power supply in response to the power supply demand; when the power change is greater than or equal to the target change, obtain the power parameters output by each of the multiple power supplies; adjust the power parameters output by the target power supply to reference power parameters according to the power parameters output by the power supply and the power supply parameters of the power supply system, wherein the power supply parameters are used to indicate the difference between the power output by the power supply that the power supply system allows. In this embodiment, the target change amount may be a fixed value set based on experience; or the target change amount may also be determined based on the power supply parameters of the power supply system and the electric energy parameters currently output by the power supply, and the specific operations are as follows: converting the electric energy output parameters of the power supply system based on the second electric energy parameters currently output by the multiple power supplies, wherein the electric energy output parameters are used to indicate the electric energy that any of the power supplies in the power supply system needs to output after responding to the power supply demand; determining the target change amount based on the electric energy output parameters and the power supply parameters; when the second electric energy parameter is a voltage value, calculating the product value between the second voltage value and the voltage regulation rate to obtain the voltage regulation amount, wherein the electric energy output parameter includes the second voltage value, the power supply parameter includes the voltage regulation rate, and the electric energy regulation amount includes the voltage regulation amount; when the second electric energy parameter is a current value, calculating the product value between the second current value and the current average rate to obtain the current regulation amount, wherein the electric energy output parameter includes the second current value, the power supply parameter includes the current average rate, and the electric energy regulation amount includes the current regulation amount.

[0070] As an optional embodiment, the target power supply includes: a processor and a controller, the processor and the controller are connected;

[0071] A processor, configured to convert an electric energy adjustment amount of a target power supply for the controller according to target electric energy parameters and power supply parameters currently output by the multiple power supplies, until the electric energy parameters output by the target power supply are adjusted to reference electric energy parameters, wherein the electric energy adjustment amount is used to indicate the electric energy difference before and after the target power supply adjusts the output electric energy this time;

[0072] The controller is used to adjust the electric energy output by the target power supply according to the electric energy adjustment amount.

[0073] Optionally, in an embodiment of the present application, the processor is used to obtain target power parameters output by multiple power supplies in the power supply system, such as the output current Io or output voltage Vo of the power supply; and to obtain power supply parameters of the power supply system, such as the load current average rate of the power supply. or voltage regulation ; and convert the power regulation amount of the target power supply for the controller according to the target power parameters and the power supply parameters, wherein the power regulation amount may include but is not limited to a current regulation amount or a voltage regulation amount.

[0074] Optionally, in the embodiment of the present application, for the load current average rate The definition is as follows:

[0075] ;

[0076] Wherein, Io is the output current of the power supply;

[0077] Iave is the average output current of the power supply: ;

[0078] is the output difference of the power supply (i.e. the current regulation value converted from the output average current of the power supply and the load current average rate), .

[0079] Optionally, in the embodiment of the present application, for the power supply voltage regulation rate The definition is as follows:

[0080] ;

[0081] Wherein, Vo is the output voltage of the power supply;

[0082] Vmean is the middle value of the output voltage of the power supply. For example, in a 12V power supply system, Vmean can be preset to 12V, indicating that the voltage level that the power supply should maintain under normal working conditions is 12V;

[0083] is the output dynamic difference of the power supply (i.e. the voltage regulation value converted from the output voltage intermediate value of the power supply and the power supply voltage regulation rate), .

[0084] Optionally, in the embodiment of the present application, the processor converts the power adjustment amount of the target power supply for the controller according to the target power parameter and the power supply parameter, until the power parameter output by the target power supply is adjusted to the reference power parameter, which is a process of multiple rounds of iterative dynamic adjustment:

[0085] S1: In the first regulation round, the processor obtains the output current Io or output voltage Vo of all power supplies in the power supply system through the load sharing bus, calculates the output average current Iave of the power supply or the output voltage median Vmean of the power supply, and adjusts the load current average rate according to the system requirements. or voltage regulation , calculate the required first electric energy adjustment amount.

[0086] S2: The controller adjusts the electric energy parameters currently output by the target power supply according to the first electric energy adjustment amount, so that the current and voltage output by the target power supply after adjustment are closer to Iave and Vmean.

[0087] S3: After several iterations, the difference between the current and voltage currently output by the target power supply and Iave and Vmean drops below the target difference threshold, and the output current and voltage of each power supply in the system tend to be stable, achieving current equalization and voltage stability under dynamic conditions.

[0088] Through the above content, the target power supply can quickly respond to load changes in the power supply system and dynamically adjust its own output power parameters so that the output current and voltage of each power supply in the system tend to be balanced, significantly improving the current balance and voltage stability of the power supply system.

[0089] As an optional embodiment, the controller includes: a filter circuit and a power supply circuit, the power supply circuit is connected to the processor, and the power supply circuit is also connected to the filter circuit;

[0090] A power supply circuit, configured to operate according to a target operating parameter indicated by the electric energy adjustment amount and output a first electric energy;

[0091] a filter circuit, configured to detect a disturbance parameter carried in the first electric energy, and to generate a calibration parameter of an operating parameter for the power supply circuit according to the disturbance parameter, wherein the disturbance parameter is used to indicate interference of the power supply state of other power supplies among the multiple power supplies except the target power supply to the power supply state of the target power supply;

[0092] The power supply circuit is also used to adjust the target operating parameters using the calibration parameters to obtain reference operating parameters, and operate according to the reference operating parameters to output the second electric energy.

[0093] Optionally, in an embodiment of the present application, the power supply circuit is used to receive target operating parameters indicated by the power regulation amount calculated by the processor, such as a voltage target value or a current target value, and operate according to these parameters to output the first power. During the dynamic adjustment process, the power supply circuit will continuously adjust its operating parameters according to the instructions of the processor to output power that meets the requirements of the power supply system.

[0094] Optionally, in an embodiment of the present application, due to the parallel relationship between multiple power supplies, parallel resonance may occur during the operation of the power supply. Parallel resonance mainly occurs when the characteristics of the inductance and capacitance components of the system interact with each other. When the operating frequency of the circuit is close to its resonant frequency, the circuit impedance will be sharply reduced or increased. This phenomenon may cause large current or voltage fluctuations, threatening the stability and safety of the system. When the power supply circuit operates according to the target operating parameters indicated by the power regulation amount, the power output of the power supply circuit changes, and the power output of the power supply circuit will be jittered due to the resonance factor. This jitter will have a certain convergence period. After the convergence period ends, stable power is output. In order to reduce the jitter convergence period, the present application designs a filter circuit, which monitors and analyzes the disturbance parameters carried in the first power output by the power supply circuit. The disturbance parameters indicate the interference of the power supply state of the power supply other than the target power supply in the power supply system to the output power of the target power supply, which may include but is not limited to electromagnetic interference (EMI) or resonant noise. By detecting disturbance parameters, the filter circuit can identify unstable factors in the power parallel system and generate corresponding calibration parameters. The calibration parameters can include slight adjustments to the output voltage or current of the power supply circuit, as well as vibration reduction control strategies for resonance and EMI, such as adjusting the duty cycle of the power converter or optimizing the voltage feedback loop, thereby compressing the jitter convergence period of the power supply circuit when regulating the output power.

[0095] Optionally, in an embodiment of the present application, the power supply circuit is also used to further fine-tune its operating parameters based on the calibration parameters generated by the filtering circuit to obtain more accurate reference operating parameters, thereby ensuring that the output second electrical energy is more stable and balanced, and ultimately achieving rapid convergence of the output electrical energy parameters to the ideal state required by the system.

[0096] Through the above content, the collaboration between the filter circuit and the power supply circuit can ensure the efficient and stable operation of the target power supply under dynamic conditions. In particular, the filter circuit can detect and analyze the disturbance parameters in the power output in real time, generate calibration parameters to optimize the working state of the power supply circuit, and reduce the interference in the parallel system, thereby accelerating the convergence speed of the system dynamic adjustment, ensuring that the power supply can maintain stable and efficient power output even under high dynamic load conditions.

[0097] As an optional embodiment, the power supply circuit includes: a parameter converter and a switching power supply, wherein the parameter converter is connected to the processor and the switching power supply respectively;

[0098] A parameter converter, used for converting an initial pulse width signal corresponding to the electric energy regulation amount, wherein the target operation parameter includes the initial pulse width signal;

[0099] The switch-mode power supply is used to respond to the initial pulse width signal, discharge according to the discharge state indicated by the initial pulse width signal, and output the first electric energy.

[0100] Optionally, in an embodiment of the present application, a parameter converter is used to convert the power regulation amount calculated by the processor into an initial pulse width signal that can be understood and executed by the switching power supply. The initial pulse width signal is a control signal used to instruct the switching power supply how to adjust the on-time in its switching cycle, that is, the "on" time of the switching element. The pulse width of the signal is proportional to the power regulation amount. By adjusting the pulse width, fine control of the power supply output voltage and current can be achieved to meet the needs of dynamic load changes.

[0101] Optionally, in an embodiment of the present application, the switching power supply is used to respond to the initial pulse width signal and control the on-off cycle of the internal switching element (such as MOSFET) to adjust the output state of the power supply. When the switching power supply receives the initial pulse width signal output by the parameter converter, it adjusts the on-time of the internal switching element according to the pulse width of the signal. This adjustment is dynamic and can quickly respond to fluctuations in the system load to ensure that the first electrical energy output by the power supply meets the set target operating parameters.

[0102] As an optional embodiment, the parameter converter is also connected to the filter circuit;

[0103] The parameter converter is further used to adjust the initial pulse width signal using the calibration parameter received from the filter circuit output to obtain a reference pulse width signal;

[0104] The switch-mode power supply is also used to respond to the reference pulse width signal, discharge according to the discharge state indicated by the reference pulse width signal, and output the second electric energy.

[0105] Optionally, in an embodiment of the present application, the parameter converter not only receives the power regulation amount of the processor, but also interacts with the filter circuit to receive calibration parameters from the filter circuit. The parameter converter adjusts the initial pulse width signal according to the calibration parameters to ensure that the power supply output is not negatively affected by changes in the power supply status of other power supplies. The reference pulse width signal after secondary adjustment includes the power regulation amount and disturbance compensation information, which is used to compensate for the voltage or current deviation detected by the filter circuit, thereby providing more accurate power output control instructions for the switching power supply.

[0106] Optionally, in an embodiment of the present application, a switching power supply is used to respond to a reference pulse width signal and further adjust the conduction time of its internal switching element to output a second electrical energy. The second electrical energy refers to the power supply output after correction by the filtering circuit and adjustment by the parameter converter. It not only responds to real-time load changes, but also compensates for the voltage and current deviations detected by the filtering circuit, thereby achieving a more stable and optimized power supply and improving the performance and reliability of the entire power supply system.

[0107] As an optional embodiment, a parameter converter includes: a sawtooth wave generator, a first amplifier, a signal comparator and a first reference power supply, wherein a first input end of the signal comparator is connected to the first reference power supply, a second input end of the signal comparator is connected to a signal output end of a filter circuit, a signal output end of the first amplifier is connected to a first input end of the signal comparator, a second input end of the signal comparator is connected to the sawtooth wave generator, and an output end of the signal comparator is connected to a switch-mode power supply;

[0108] A first amplifier, used for generating a calibration signal according to a reference voltage output by the first reference power supply and a calibration parameter output by the filter circuit;

[0109] A sawtooth wave generator, used for converting a sawtooth wave signal corresponding to the electric energy regulation amount;

[0110] The signal comparator is used for outputting a pulse width signal according to the calibration signal and the sawtooth wave signal.

[0111] Optionally, in the embodiments of the present application, Figure 2 Schematic diagram of a parameter converter of a power supply system of a server according to an embodiment of the present application, such as Figure 2 As shown, the parameter converter includes a sawtooth wave generator, a first amplifier (i.e. Figure 2 The error amplifier in the Figure 2 The first input terminal of the signal comparator is connected to the first reference power supply, the second input terminal of the signal comparator is connected to the signal output terminal of the filter circuit, the signal output terminal of the first amplifier is connected to the first input terminal of the signal comparator, the second input terminal of the signal comparator is connected to the sawtooth wave generator, and the output terminal of the signal comparator is connected to the switching power supply.

[0112] Optionally, in an embodiment of the present application, the first amplifier is connected to the first reference power supply and the filter circuit to generate a calibration signal to ensure accurate control of the power supply output. The first amplifier receives the calibration parameter output by the filter circuit and the reference voltage output by the first reference power supply, and generates the calibration signal by amplification and adjustment.

[0113] Optionally, in an embodiment of the present application, the sawtooth wave generator is used to receive the electric energy regulation amount generated by the processor and convert the electric energy regulation amount into a corresponding sawtooth wave signal.

[0114] Optionally, in an embodiment of the present application, a signal comparator is used to receive a calibration signal from the first amplifier and a sawtooth wave signal from the sawtooth wave generator. It compares the two input signals, and when the voltage of the calibration signal exceeds the voltage of the sawtooth wave signal, the signal comparator outputs a high level, otherwise it outputs a low level. This comparison result determines the pulse width of the PWM signal, and further guides the switching cycle of the switching power supply, that is, its on and off time, to achieve the desired power output.

[0115] Through the above content, the parameter converter realizes precise dynamic control of power supply output through the coordinated work of sawtooth wave generator, first amplifier and signal comparator. It not only responds to the power regulation of the processor, but also compensates for the disturbance in the parallel power supply system through interaction with the filter circuit, ensures the stability and current sharing of power supply output, and improves the efficiency and reliability of the whole system.

[0116] As an optional embodiment, the filter circuit includes: a current filter and a first converter, the output end of the current filter is connected to the input end of the first converter, the current input end of the current filter is connected to the current output end of the power supply circuit, and the output end of the first converter is connected to the power supply circuit;

[0117] A current filter, used to detect the resonance noise value of other power supplies according to the target current output by the power supply circuit, the first electric energy includes the target current, and the disturbance parameter includes the resonance noise value;

[0118] The first converter is used to generate a calibration parameter corresponding to the resonant noise value.

[0119] Optionally, in the embodiments of the present application, Figure 3 A schematic diagram of a filter circuit of a power supply system of a server according to an embodiment of the present application Figure 1 ,like Figure 3 As shown, the filter circuit includes: a current filter and a first converter, the output end of the current filter is connected to the input end of the first converter, the current input end of the current filter is connected to the current output end of the power supply circuit, and the output end of the first converter is connected to the power supply circuit.

[0120] Optionally, in an embodiment of the present application, when the power supply circuit supplies power to the load, especially in a scenario where multiple power supplies are connected in parallel, resonant noise caused by the parallel connection of power supplies or dynamic changes in the load may appear in the power supply system. The current filter is used to filter out high-frequency noise components from the target current signal and extract noise values ​​related to the resonance.

[0121] Optionally, in an embodiment of the present application, the first converter is used to receive a resonant noise value from a current filter and convert the value into a calibration parameter. The first converter may be, but is not limited to, a digital signal processor, a microcontroller, or other types of signal processing units, which can convert analog noise values ​​into digital signals, and then generate calibration parameters through algorithm processing. The calibration parameters are used to indicate how to adjust the power supply output to offset the impact of the resonant noise. The calibration parameters may include, but are not limited to, information on adjusting the duty cycle, frequency, or other control parameters of the PWM signal to achieve precise adjustment of the power supply output and reduce or eliminate the resonant noise.

[0122] Through the above content, effective detection and compensation of resonant noise in the parallel power supply system is achieved. The filter circuit can detect the resonant noise in real time and guide the dynamic adjustment of the power supply output by generating calibration parameters, thereby ensuring that the power supply system achieves more accurate and stable current output and maintains the optimal performance of the power supply system and server under dynamic load conditions.

[0123] As an optional embodiment, the current filter includes: a first comparator, wherein the negative input terminal of the first comparator is connected to the output terminal of the first comparator, the positive input terminal of the first comparator is connected to the current output terminal of the power supply circuit, and the output terminal of the first comparator is connected to the input terminal of the first converter.

[0124] Optionally, in the embodiments of the present application, Figure 4 FIG. 1 is a circuit connection diagram of a current filter of a power supply system of a server according to an embodiment of the present application, such as Figure 4 As shown, the current filter includes a first comparator, wherein the connection between the negative input terminal and the output terminal of the first comparator forms a feedback loop, and the positive input terminal of the first comparator is connected to the current output terminal of the power supply circuit, so that the first comparator can adjust the output according to the difference between its output and the positive input terminal (i.e., the current output of the power supply circuit), thereby realizing dynamic current signal processing. The output terminal of the first comparator is connected to the input terminal of the first converter. When the first comparator detects noise or fluctuations in the current signal, it will output a signal indicating the resonant noise value to the first converter. The first converter will generate a calibration parameter corresponding to the resonant noise value according to the output signal of the first comparator, thereby guiding the parameter converter to adjust the PWM signal to ensure that the current output of the power supply is stable and meets the system requirements.

[0125] Through the above content, the current filter monitors and processes the current output of the power supply circuit in real time through the first comparator, stabilizes the current signal by the feedback mechanism, and reduces the influence of noise and fluctuation. The connection between the first comparator and the first converter enables the detected current anomaly to be quickly converted into a calibration parameter to guide the optimization adjustment of the power supply output.

[0126] As an optional embodiment, the first converter includes: a second comparator, a first resistor, a second resistor and a second reference power supply, wherein the first end of the first resistor is connected to the output end of the current filter, the second end of the first resistor is connected to the positive input end of the second comparator, the second reference power supply is connected to the first end of the second resistor, the second end of the second resistor is connected to the negative input end of the second comparator, and the output end of the second comparator is connected to the power supply circuit.

[0127] Optionally, in the embodiments of the present application, Figure 5 is a circuit connection diagram of a first converter of a power supply system of a server according to an embodiment of the present application, such as Figure 5 As shown, the first converter includes a second comparator, a first resistor (corresponding to Figure 5 R16 in), the second resistor (corresponding to Figure 5 R16 in the figure) and a second reference power supply, wherein a first end of R16 is connected to the output end of the current filter, a second end is connected to the positive input end of the second comparator, the second reference power supply is connected to a first end of R15, a second end of R15 is connected to the negative input end of the second comparator, and an output end of the second comparator is connected to the power supply circuit.

[0128] Optionally, in an embodiment of the present application, when the positive input terminal of the second comparator receives the signal output by the current filter, it is compared with the second reference power supply value received by the negative input terminal. If the current signal deviates from the reference level set by the second reference power supply, the second comparator will generate a calibration parameter corresponding to the resonant noise value, which contains information on how to adjust the power supply circuit to offset current fluctuations or noise.

[0129] Optionally, in an embodiment of the present application, the output end of the second comparator is directly connected to the power supply circuit. When the second comparator detects the difference between the current signal and the reference power supply value and generates a calibration parameter signal, the power supply circuit will adjust the duty cycle, frequency and other parameters of its PWM signal according to the calibration parameter signal to achieve precise control of the current output and ensure that the current is stable and meets system requirements.

[0130] Through the above content, the first converter converts the current fluctuation detected by the current filter into a calibration parameter through a combination of the second comparator, the first resistor, the second resistor and the second reference power supply, and guides the power supply circuit to perform precise dynamic adjustments. This design can effectively handle the current fluctuation and noise in the server power supply system and improve the stability and current balance of the power supply output.

[0131] As an optional embodiment, the filter circuit includes: a voltage filter and a second converter, the output end of the voltage filter is connected to the input end of the second converter, the voltage input end of the voltage filter is connected to the voltage output end of the power supply circuit, and the output end of the second converter is connected to the power supply circuit;

[0132] A voltage filter, used to detect the resonance noise value of other power supplies according to the target voltage output by the power supply circuit, the first electric energy includes the target voltage, and the disturbance parameter includes the resonance noise value;

[0133] The second converter is used to generate a calibration parameter corresponding to the resonant noise.

[0134] Optionally, in the embodiments of the present application, Figure 6 A schematic diagram of a filter circuit of a power supply system of a server according to an embodiment of the present application Figure 2 ,like Figure 6 As shown, the filter circuit includes a voltage filter and a second converter, the output end of the voltage filter is connected to the input end of the second converter, the voltage input end of the voltage filter is connected to the voltage output end of the power supply circuit, and the output end of the second converter is connected to the power supply circuit.

[0135] Optionally, in an embodiment of the present application, in a server power supply system, especially when multiple power supplies are working in parallel, the output voltage of the power supply circuit may be disturbed due to differences in electrical characteristics between power supplies or instantaneous changes in dynamic loads (such as GPU / CPU overclocking), resulting in voltage fluctuations or resonance. The voltage filter is used to monitor and quantify the resonant noise present in the target voltage output by the power supply circuit.

[0136] Optionally, in an embodiment of the present application, the second converter receives the resonant noise value generated from the voltage filter, and converts it into a calibration parameter corresponding to the resonant noise for guiding the adjustment of the power supply circuit to reduce or eliminate the influence of the resonant noise.

[0137] Through the above content, the resonant noise in the output voltage of the power supply circuit is monitored in real time by the voltage filter, and the resonant noise value is converted into the corresponding calibration parameter by the second converter to guide the optimization adjustment of the power supply circuit, which can effectively reduce the voltage fluctuation and resonant noise in the output voltage and improve the overall efficiency and reliability of the power supply system.

[0138] As an optional embodiment, the voltage filter includes: a third comparator, a third resistor and a fourth resistor, the positive input terminal of the third comparator is connected to the voltage output terminal of the power supply circuit, the first end of the third resistor is connected to the negative input terminal of the third comparator, the second end of the third resistor is connected to the output terminal of the third comparator, the first end of the fourth resistor is connected to the positive input terminal of the third comparator, the second end of the fourth resistor is connected to the output terminal of the third comparator, and the output terminal of the third comparator is also linked to the input terminal of the second converter.

[0139] Optionally, in the embodiments of the present application, Figure 7 FIG. 1 is a circuit connection diagram of a voltage filter of a power supply system of a server according to an embodiment of the present application, such as Figure 7 As shown, the voltage filter includes a third comparator, a third resistor (corresponding to Figure 7 RV4 in the Figure 7 RV5 in ).

[0140] Optionally, in an embodiment of the present application, the third comparator receives a voltage output signal and a reference level signal of the power supply circuit through two input terminals, respectively, and then generates an output signal based on the comparison result of the two signals. The positive input terminal of the third comparator is directly connected to the voltage output terminal of the power supply circuit, and is used to monitor the actual value of the output voltage of the power supply in real time. The negative input terminal receives a reference level through a third resistor. This reference level is a preset voltage standard, which is used to compare with the output voltage of the power supply circuit to detect voltage deviation or resonance noise, and generate a corresponding resonance noise value.

[0141] Through the above content, a voltage filter is formed by integrating the third comparator, the third resistor and the fourth resistor, which is used to monitor and adjust the stability of the output voltage of the power supply circuit in real time. The third comparator detects voltage deviation or resonance by comparing the output voltage of the power supply circuit with a preset reference level. The third resistor and the fourth resistor are used for signal adjustment and voltage division to ensure the accuracy and reliability of the output result of the third comparator. The second converter is used to receive the output signal of the third comparator to generate calibration parameters, guide the power supply circuit to perform precise voltage control, and improve the stability of the voltage output of the parallel power supply system.

[0142] As an optional embodiment, the second converter includes: a fourth comparator, a third reference power supply, a fifth resistor, a sixth resistor, a seventh resistor and a capacitor, wherein the first end of the fifth resistor is connected to the positive input terminal of the fourth comparator, the second end of the fifth resistor is connected to the output terminal of the fourth comparator, the first end of the capacitor is connected to the positive input terminal of the fourth comparator, the second end of the capacitor is connected to the first end of the sixth resistor, the second end of the sixth resistor is connected to the output terminal of the fourth comparator, the first end of the seventh resistor is connected to the positive input terminal of the fourth comparator, the second end of the seventh resistor is connected to the ground, the third reference power supply is connected to the negative input terminal of the fourth comparator, and the output terminal of the fourth comparator is connected to the power supply circuit.

[0143] Optionally, in the embodiments of the present application, Figure 8 : is a circuit connection diagram of a second converter of a power supply system of a server according to an embodiment of the present application, such as Figure 8 As shown, the second converter includes a fourth comparator, a third reference power supply, a fifth resistor (corresponding to Figure 8 RV10 in), the sixth resistor (corresponding to Figure 8 RV9 in), the seventh resistor (corresponding to Figure 8 RV11 in) and capacitor (corresponding to Figure 8 CV1 in ).

[0144] Optionally, in an embodiment of the present application, when the positive input terminal of the fourth comparator receives the voltage signal output by the voltage filter, it is compared with the third reference power supply value received by the negative input terminal. If the voltage signal deviates from the reference level set by the third reference power supply, the fourth comparator will generate a calibration parameter corresponding to the resonant noise value output by the voltage filter, and the calibration parameter contains information on how to adjust the power supply circuit to offset voltage fluctuations or noise.

[0145] Optionally, in an embodiment of the present application, the output end of the fourth comparator is directly connected to the power supply circuit, so that the power supply circuit can receive the calibration parameters generated by the fourth comparator. The power supply circuit will adjust the duty cycle, frequency or phase of its output voltage according to the calibration parameter signal to reduce voltage deviation and eliminate resonant noise, thereby ensuring the stability and reliability of the output voltage.

[0146] Through the above content, the second converter can effectively process the voltage deviation and noise information detected by the voltage filter through the combination of the fourth comparator, the third reference power supply, the fifth resistor, the sixth resistor, the seventh resistor and the capacitor, and generate corresponding calibration parameters to guide the power supply circuit to accurately adjust its output voltage.

[0147] As an optional embodiment, the processor is also used to: convert the power output parameters of the power supply system according to multiple target power parameters, wherein the power output parameters are used to indicate the power that needs to be output by any power supply in the power supply system after responding to the power supply demand; determine the power adjustment amount according to the power output parameters and the power supply parameters.

[0148] Optionally, in an embodiment of the present application, the target power parameter is used to indicate the actual output power of the power supply, and the target power parameter may include but is not limited to the current output value, voltage output value, power supply power, etc. of the power supply.

[0149] Optionally, in an embodiment of the present application, the processor receives target power parameters from each power supply, and converts a comprehensive power output parameter according to multiple target power parameters and the power supply requirements of the system. The power output parameter is used to indicate how much power (voltage, current or power) each power supply should output to maintain load balance of the power supply system under the current power supply requirements. Then the processor determines the power regulation amount according to the power output parameter and the power supply parameter.

[0150] As an optional embodiment, the processor is further used to: when the target electric energy parameter is a voltage value, calculate the product value between the reference voltage value and the voltage regulation rate to obtain the voltage regulation amount, wherein the electric energy output parameter includes the reference voltage value, the power supply parameter includes the voltage regulation rate, and the electric energy regulation amount includes the voltage regulation amount;

[0151] When the target electric energy parameter is a current value, the product value between the reference current value and the current average rate is calculated to obtain the current regulation amount, wherein the electric energy output parameter includes the reference current value, the power supply parameter includes the current average rate, and the electric energy regulation amount includes the current regulation amount.

[0152] Optionally, in an embodiment of the present application, when the target electric energy parameter is a voltage value, the voltage regulation amount is the product of the reference voltage value and the voltage regulation rate. The reference voltage value is used to indicate the desired voltage level of the power supply system, and is usually set to the rated output voltage of the power supply, such as the 12V output of the server power supply. Voltage regulation amount = reference voltage value × voltage regulation rate. For example, if the reference voltage value is 12.2V and the voltage regulation rate is 5%, the voltage regulation amount is 12.2V × 5% = 0.61V, that is, during the dynamic response process, if it is detected that the voltage deviates from the reference value by more than 0.61V, the processor will generate instructions to adjust the power supply in the power supply system so that its output voltage is adjusted to within the specified range.

[0153] Optionally, in an embodiment of the present application, when the target electric energy parameter is a current value, the current regulation amount is the product of a reference current value and a current average rate, and the reference current value is used to indicate the current output that each power supply should have under balanced load conditions. Current regulation amount = reference current value × current average rate. For example, assuming that the reference current value is Iave and the current average rate is 10%, the current regulation amount is Iave × 10% = 0.1 × Iave, which means that if it is detected that the current exceeds 10% of Iave, the processor will generate instructions to adjust the power supply in the power supply system so that its output current is adjusted to within the specified current averaging range.

[0154] As an optional embodiment, the processor is further configured to: when the target electric energy parameter is a current value, calculate an average value of multiple target electric energy parameters to obtain a reference current value, wherein the electric energy output parameter includes the reference current value;

[0155] When the target power parameter is a voltage value, a reference voltage value corresponding to the target power parameter is determined from power parameters and voltage values ​​having a corresponding relationship, wherein the power output parameter includes the reference voltage value.

[0156] Optionally, in an embodiment of the present application, when the target electric energy parameter is a current value, the reference current value may be, but is not limited to, an average value of multiple target electric energy parameters. This average value reflects the average current output of the power supply system at a certain moment, and is used to guide each power supply in the power supply system to adjust its current output to be close to the average value of the power supply system output current, so as to achieve overall current equalization and load balancing.

[0157] Optionally, in an embodiment of the present application, when the target power parameter is a voltage value, a reference voltage value corresponding to the target power parameter can be determined from the power parameters and voltage values ​​having a corresponding relationship, and the corresponding relationship can be based on the voltage output specification, load change mode, historical operation data, and safety and efficiency considerations of the power supply system design. For example, for a 12V server power supply, the processor's database contains voltage output requirements under different load conditions, as well as emergency voltage adjustment strategies in specific situations (such as GPU overclocking).

[0158] Through the above content, the processor generates a reference current value and a reference voltage value by calculating the average value of the current value and determining a reference voltage value that matches the voltage value, thereby being able to guide each power supply in the parallel power supply system to perform dynamic power regulation and adjust the output current and voltage to the desired stable state of the power supply system.

[0159] In order to realize the business processing function of the server, the server will run in different operating states. The power demand of the server is different in different operating states. (For example, some servers will be configured with multiple graphics processors GPU (Graphics Processing Unit) on the server to support better computing power. Usually, the process of GPU instantly improving computing power is called overclocking. Overclocking refers to enhancing the performance of the GPU graphics processor by increasing its operating frequency (clock frequency). Overclocking mainly affects the core frequency and video memory frequency of the GPU. The core frequency of the GPU directly affects its data processing speed. Overclocking enables the GPU to process more graphics computing tasks in the same time by increasing the core frequency. When the video memory frequency is increased, the data transmission speed between the GPU and the video memory is accelerated, which helps to improve the rendering capabilities of high resolution and large textures. Through successful overclocking, users will experience higher frame rates or faster computing speeds in GPU-intensive tasks such as games, 3D rendering, and machine learning. Overclocking will cause the temperature of the GPU to increase significantly. If the heat dissipation is not sufficient, it may cause overheating, triggering protection mechanisms such as frequency reduction or automatic shutdown. Overclocking will increase the power consumption of the GPU and bring higher energy consumption. Peak load EDPp (Electric Design Peak Load) when GPU graphics processor is overclocked Power) 155% of the maximum load of the PSU for 200us, the power supply support will have concerns about triggering overcurrent protection (OCP). This power supply supports current protection (OCP) of about 110% of the maximum load of the PSU for 1s, and the top load capacity is about 140% for 100us. And due to excessive power consumption and load, it is easy to cause large voltage changes and reduced stability. Excessive overclocking may cause system instability. In order to increase stability, servers usually adopt a mechanism of power redundancy for server power supplies. Redundancy consists of multiple identical power supplies. When one power supply fails, another power supply can immediately take over its work. After replacing the power supply, multiple power supplies work together again. The benefit of power supply redundancy is to achieve high stability of the server system. When one or two power supplies lose function or do not output for unknown reasons, the remaining power supplies in the system can continue to operate and provide power to the server system. Prevent the server from shutting down or shutting down due to power supply factors. The power supply that realizes the redundant function will have multiple groups of current output in parallel, so it is very important to evenly distribute the current. Therefore, both need to have Current share (current balancing or current balance) function to ensure balanced current output of each unit. Through the above implementation of the present application, the main output of the power supply system is actively current balanced, the load current is evenly distributed within 10%, and each PSU works within 10%~20% of the rated load; 5% tolerance ≥ 20% rated load. The failure of one of the redundant backup power supplies will not affect the operation and output of other power supplies.If the ISHARE Pin is evenly short-circuited to the ground, the power output should meet the specification. However, in server applications using GPUs, because the peak load EDPp when the GPU graphics processor is overclocked, the dynamic response is extremely fast. It is necessary to pay attention to the fact that excessive power consumption and load can easily cause large voltage changes and reduced stability. Therefore, it is necessary to assist in the "dynamic current sharing" evaluation, which is a great test for the server power supply design. The present invention proposes a software detection method to achieve a dynamic current sharing mechanism.

[0160] Optionally, in the embodiment of the present application, a server power supply dynamic current sharing mechanism is also provided. This solution places a firmware and hardware function in the Server PSU that has the functions of "immediately adjusting the converter duty cycle to the optimal ratio and maintaining the voltage output stable when the output voltage and current change amount are too large instantly. And a fast convergence vibration reduction module to quickly converge the resonance during parallel connection". No external instructions are required to allow the server power supply to actively adjust the dynamic current sharing under GPU overclocking, with fast speed and high stability.

[0161] The implementation of this solution is divided into three parts: (i) the conditions and models of dynamic current sharing; (ii) the judgment logic for sudden changes in output voltage and current; and (iii) the fast convergence vibration reduction module.

[0162] 1. Determination of the change in Server PSU output voltage and current:

[0163] 1. Conditions and models of dynamic current sharing phenomenon:

[0164] Fig. 9 FIG. 1 is a power supply redundancy architecture diagram of a server power supply dynamic current balancing mechanism according to an embodiment of the present application, such as Fig. 9 As shown, the main output has an active load sharing function by connecting all load sharing bus "ISHARE" pins together to support active load sharing. For N+N redundant power supply system, the expected active load current and voltage regulation specifications of PSU output are as follows:

[0165] (1) For power supply current averaging The definition is as follows:

[0166] ;

[0167] Among them, the load current average rate is: ;

[0168] PSU Output Differential: ;

[0169] PSU output current: Io;

[0170] PSU output average current: ;

[0171] (2) For power supply voltage regulation rate The definition is as follows:

[0172] ;

[0173] Among them, the power supply voltage regulation rate is: ;

[0174] PSU output voltage: Vo;

[0175] PSU output middle value: Vmean, such as 12V power supply preset to 12.2V;

[0176] PSU output dynamic difference: ;

[0177] (3) Power supply load current averaging and voltage regulation specifications:

[0178] a) Within the working range of each PSU, the current average rate < Within 10%;

[0179] b) The power supply voltage regulation rate within each PSU operating range < within 5%;

[0180] When the system is just started, a new power supply is just put into use, or when the system CPU or GPU is overclocked, the power supply will undergo a dynamic change of about 20ms. Therefore, it is necessary to converge for these two different scenarios: "system startup" and "system overclocking". Fig.10 is a schematic diagram of a dynamic current sharing according to an embodiment of the present application, such as Fig.10 As shown:

[0181] When the system is turned on: 20ms after the new power supply (Phase 2) is powered on, the power supply load current averaging and voltage regulation specifications must meet the specification requirements.

[0182] When the system is overclocked: After the dynamic current switches to steady state for 5ms, the power supply load current averaging and voltage regulation specifications meet the specification requirements.

[0183] Therefore, in these two scenarios, if the current regulation rate is greater than 10% or the voltage regulation rate is greater than 5%, the PSU is considered to be in a dynamic state.

[0184] At this time, the boundary conditions of the dynamic change of PSU output are:

[0185] Output current change:

[0186] ;

[0187] Output voltage change:

[0188] .

[0189] 2. Output voltage and current sudden change judgment logic:

[0190] Fig.11 is a block diagram of a switching power supply power stage architecture according to an embodiment of the present application, such as Fig.11 As shown in the figure, the basic structure of the switching power supply is generally composed of a pulse width modulation (PWM) control IC, switching elements (MOSFET and DIODE), magnetic elements, and capacitor elements. When switching between cut-off zones, both modes have the characteristics of low dissipation. The conversion between switches will have higher dissipation, but the time is very short, so it is more energy-saving and generates less waste heat. However, the switching power supply is more complicated, and the MOS tube will switch frequently. If the switching current is not handled, it may generate noise and electromagnetic interference that affect other equipment. Moreover, if the switching power supply is specially designed, its power factor is high. The power handling power of the switching power supply is usually hundreds of watts to thousands of watts.

[0191] Pulse-width modulation (PWM) is a technique for converting analog signals into pulses. Generally, the pulse cycle is fixed after conversion, but the pulse duty cycle will change according to the size of the analog signal. Figure 2 As shown in the figure, the pulse width modulation (PWM) switching voltage regulator circuit adjusts its duty cycle through voltage feedback while keeping the output frequency of the control circuit unchanged, so as to achieve the purpose of stabilizing the output voltage.

[0192] Fig.12 is a schematic diagram of a digital power supply according to an embodiment of the present application, such as Fig.12 As shown, the digital power supply is based on the design of analog control switching power supply, using a microprocessor to replace analog control; performing programmable power management; and using software algorithms to control the power supply system to achieve power control, management, monitoring and communication functions that analog control switching power supply cannot do, and has a high degree of flexibility; it can ensure the best conversion efficiency for various input voltages and various load conditions.

[0193] The current digital server power supply (Server PSU) uses MCU to complete the converter switch control, fan control, LED control, monitoring, protection, communication and other functions in the power supply... The division of labor is divided into primary side MCU and secondary side MCU. Fig.13 is a block diagram of a digital power supply architecture according to an embodiment of the present application, such as Fig.13As shown, the current Server PSU uses MCU to complete the converter switch control, fan control, LED control, monitoring, protection, communication and other functions in the power supply... The division of labor is divided into primary side MCU and secondary side MCU. The current sharing and redundancy functions are controlled and implemented by the secondary side MCU.

[0194] 1) Software adjustment required when the system is dynamically adjusted:

[0195] Further analysis shows that the dynamic current sharing function of the power supply relies on 12V_ISHARE and IMON for compensation. There is a voltage difference between 12V_ISHARE and IMON, so there is a problem with the current sharing function compensation during the dynamic test. Therefore, 12V has an abnormal waveform.

[0196] Therefore, the software adjustment logic is:

[0197] When the dynamic conditions are met, the system will enter the dynamic control function (DYNC Control Function). If the conditions are not met, the system will continue in the static state loop. Fig.14 A dynamic adjustment logic diagram according to an embodiment of the present application is shown in the following management process: Fig.14 It will check for dynamic conditions every 5ms (this time is adjustable).

[0198] ;

[0199] ;

[0200] 2) Judgment and correction of entering the dynamic control function (DYNC Control Function):

[0201] When entering the dynamic adjustment control function, it is necessary to ensure that the current feedback is greater than the current change in the dynamic mode. , the voltage error between 12V_ISHARE and IMON can be offset, and the offset is continued every 5ms until the current feedback amount is less than the current change in dynamic mode, and the dynamic regulation mode can be exited. Fig.15 is a logic diagram of dynamic output voltage regulation according to an embodiment of the present application. Fig.16 A logic diagram of dynamic output current regulation according to an embodiment of the present application.

[0202] 3) Test after adjustment:

[0203] 12V has abnormal waveform because the current sharing control limit is increased. Optimized firmware to solve 12V abnormality during dynamic test. Verify whether the output voltage is normal during dynamic test. Fig.17 is a schematic diagram of a dynamically adjusted average flow rate according to an embodiment of the present application, such as Fig.17 As shown, when dynamic power supply adjustment is achieved, the load current average rate is within 10%.

[0204] 3. Rapid convergence vibration reduction module:

[0205] Because when power supplies are used in parallel, resonance is an issue that needs to be paid special attention to. Parallel resonance mainly occurs when the characteristics of the inductance and capacitance components of the system interact with each other. When the operating frequency of the circuit is close to its resonant frequency, the circuit impedance will drop or rise sharply. This phenomenon may cause large current or voltage fluctuations, threatening the stability and safety of the system. Feedback oscillation caused by output oscillation, Fig.18 is a schematic diagram of a feedback adjustment circuit according to an embodiment of the present application. Fig.19 A waveform impact schematic diagram according to an embodiment of the present application.

[0206] In practical applications, resonance may be caused by the following factors: load changes, grid fluctuations or harmonic injection, etc. When multiple power supplies are connected in parallel, the impact of resonance may be more complicated due to the different internal resistance and dynamic characteristics of each power supply. Fig. 20 4 is a power supply parallel current resonance waveform diagram according to an embodiment of the present application.

[0207] This will not only cause mutual interference between power supplies, but may also cause equipment damage or reduced efficiency. To prevent resonance, it is necessary to improve the stability of the system by optimizing the circuit design, adding damping circuits, avoiding the resonant frequency range, or using filtering measures. This is a key link in ensuring the reliability of power supply parallel connection. This solution uses a fast convergence vibration reduction module. Fig.21 is a current dynamic vibration reduction architecture diagram according to an embodiment of the present application, Fig. 22 A logic diagram of a current dynamic current balancing and vibration reduction function according to an embodiment of the present application.

[0208] Fig.23 Schematic diagram of two detection paths of a vibration reduction module circuit according to an embodiment of the present application, such as Fig.23 As shown, when the power supplies are connected in parallel, the influence of different resonances on the dynamic characteristics of each power supply can be converged from dozens of oscillations to 1-2 times.

[0209] Fig.24 is a circuit diagram of a vibration reduction module circuit according to an embodiment of the present application, such as Fig.24As shown, the vibration reduction module circuit is composed of a comparator type circuit, which is designed to eliminate the impact of feedback oscillation on the feedback, and can be divided into an output current detection path and a voltage output path. Fig.25 Schematic diagram of level change of a vibration reduction module circuit according to an embodiment of the present application, such as Fig.25 As shown, this solution uses a dual-power comparator circuit, with Vref bias as the center, to limit the comparison voltage to the Vref+Vos and Vref-Vos ranges. If within this range, it is at a high level +VDD. If it exceeds this range, it is at a low level VSS. If it is grounded, it is at zero potential.

[0210] Output current detection path:

[0211] Fig.26 1 is a circuit diagram of a comparator circuit for detecting an output current of a vibration reduction module circuit according to an embodiment of the present application. Fig. 27 is an equivalent circuit diagram of a current detection path comparator according to an embodiment of the present application, Fig.26 By simplification, it is equivalent to Fig. 27 When the current input feedback is in the range of 2.5V+ / - 0.61V, the output will be high level, and outside this range it will be low level.

[0212] Output voltage detection path:

[0213] Fig.28 1 is a circuit diagram of a comparator circuit for detecting an output voltage of a vibration reduction module circuit according to an embodiment of the present application. Fig.29 is an equivalent circuit diagram of a voltage detection path comparator according to an embodiment of the present application, Fig.28 By simplifying it can be equivalent Fig.29 When the voltage input feedback is in the range of 2.5V+ / - 0.61V, the output will be high level, and outside this range it will be low level.

[0214] Fig.30 is a waveform diagram of a vibration reduction module according to an embodiment of the present application, such as Fig.31 As shown in the figure, the vibration reduction module circuit mainly prevents resonance by maintaining the power feedback voltage of the power supply as a stable DC bias. Improving the resonance phenomenon when the power supply is connected in parallel can significantly improve the stability and reliability of the system and reduce the damage to the equipment caused by current or voltage fluctuations. By suppressing resonance, the energy loss caused by high-frequency oscillation can be reduced and the overall efficiency can be improved. At the same time, it can also effectively reduce electromagnetic interference and optimize the operating environment of the power grid or system. Suppressing resonance is crucial for the long life and performance consistency of parallel power supplies. Ultimately, this optimization can ensure that the system operates more safely and efficiently and meets the power supply requirements of complex loads.

[0215] Fig.31is a waveform diagram of a dynamic current resonance phenomenon of a power supply in parallel according to an embodiment of the present application, Fig.32 This is a waveform diagram after improving the resonance phenomenon according to an embodiment of the present application. In order to meet the dynamic waveform generated when the GPU or CPU is overclocked, the server power supply uses the system dynamic adjustment software and the fast convergence vibration reduction module of the present solution. The improvement effect is as follows: Fig.32 As shown in the figure, when the CPU or GPU starts overclocking, the system dynamically adjusts the software to eliminate rising and falling voltages. And a fast convergence vibration reduction module is used to eliminate current resonance when connected in parallel.

[0216] This solution has a great potential market. Data centers and servers using GPU cards may experience output voltage drops due to peak load EDPp heavy load when overclocking the GPU graphics processor. This design method makes the power supply system more adaptable, maintainable and cost-effective, while ensuring the stability and reliability of the system under different load conditions.

[0217] Through this solution, on the one hand, the software can be dynamically adjusted according to real-time load changes to achieve more refined load balancing and improve the overall efficiency and stability of the system. At the same time, reducing the impact of resonance on the system and improving the resonance phenomenon when power supplies are connected in parallel can significantly improve the stability and reliability of the system and reduce the damage to the equipment caused by current or voltage fluctuations. By suppressing resonance, energy loss caused by high-frequency oscillations can be reduced and overall efficiency can be improved. At the same time, this can also effectively reduce electromagnetic interference and optimize the operating environment of the power grid or system. Suppressing resonance is crucial for the long life and performance consistency of parallel power supplies.

[0218] On the other hand, through software adaptation, the power supply system can be better monitored and managed, abnormal situations can be responded to quickly, the probability of failure can be reduced, and the reliability of the system can be improved. When the system needs to add new functions or adapt to new load conditions, it can be expanded through software without large-scale changes to the hardware, which enhances the scalability of the system. No additional hardware is required and no special capacitor values ​​are required. This function can be added to the existing architecture and firmware. In addition, this solution does not utilize special technology or new materials, and its advancement is relatively low. The proposed firmware and hardware design effectively delays the solution to the dynamic adjustment problem, and the concept is very innovative. The design feasibility of the implementation example is 100%, and the related technologies used are mature existing mass production technologies.

[0219] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method.

[0220] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0221] The above is a detailed introduction to a power supply system for a server provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A power supply system for a server, characterized in that: include: A plurality of power supplies, the plurality of power supplies are connected in parallel, and the power supply system is used to connect to a server; The multiple power supplies are used to supply power to the target server according to the power demand of the connected target server, wherein the power demand is used to indicate the power demand of the server; The target power supply among the multiple power supplies is used to adjust the power parameter output by the target power supply to a reference power parameter according to the power parameter output by the power supply and the power supply parameter of the power supply system, wherein the power supply parameter is used to indicate the difference between the power that the power supply system allows the power supply to output.

2. The power supply system according to claim 1, characterized in that: The target power supply includes: a processor and a controller, wherein the processor is connected to the controller; The processor is used to convert the power adjustment amount of the target power supply for the controller according to the target power parameters currently output by the multiple power supplies and the power supply parameters, until the power parameters output by the target power supply are adjusted to the reference power parameters, wherein the power adjustment amount is used to indicate the power difference before and after the target power supply adjusts the output power this time; The controller is used to adjust the electric energy output by the target power supply according to the electric energy adjustment amount.

3. The power supply system according to claim 2, characterized in that: The controller comprises: a filter circuit and a power supply circuit, wherein the power supply circuit is connected to the processor and is also connected to the filter circuit; The power supply circuit is used to operate according to the target operating parameters indicated by the electric energy adjustment amount and output the first electric energy; The filtering circuit is used to detect a disturbance parameter carried in the first electric energy, and generate a calibration parameter of an operating parameter for the power supply circuit according to the disturbance parameter, wherein the disturbance parameter is used to indicate the interference of the power supply state of other power supplies among the multiple power supplies except the target power supply on the power supply state of the target power supply; The power supply circuit is further used to adjust the target operating parameters using the calibration parameters to obtain reference operating parameters, and operate according to the reference operating parameters to output the second electric energy.

4. The power supply system according to claim 3, characterized in that: The power supply circuit comprises: a parameter converter and a switching power supply, wherein the parameter converter is connected to the processor and the switching power supply respectively; The parameter converter is used to convert an initial pulse width signal corresponding to the electric energy regulation amount, wherein the target operating parameter includes the initial pulse width signal; The switching power supply is used to respond to the initial pulse width signal, discharge according to the discharge state indicated by the initial pulse width signal, and output the first electric energy.

5. The power supply system according to claim 4, characterized in that: The parameter converter is also connected to the filter circuit; The parameter converter is further used to adjust the initial pulse width signal using the calibration parameter received from the filter circuit output to obtain a reference pulse width signal; The switching power supply is further configured to respond to the reference pulse width signal, discharge according to the discharge state indicated by the reference pulse width signal, and output the second electric energy.

6. The power supply system according to claim 5, characterized in that: The parameter converter comprises: a sawtooth wave generator, a first amplifier, a signal comparator and a first reference power supply, wherein the first input end of the signal comparator is connected to the first reference power supply, the second input end of the signal comparator is connected to the signal output end of the filter circuit, the signal output end of the first amplifier is connected to the first input end of the signal comparator, the second input end of the signal comparator is connected to the sawtooth wave generator, and the output end of the signal comparator is connected to the switch-mode power supply; The first amplifier is used to generate a calibration signal according to the reference voltage output by the first reference power supply and the calibration parameter output by the filter circuit; The sawtooth wave generator is used to convert a sawtooth wave signal corresponding to the electric energy adjustment amount; The signal comparator is used to output a pulse width signal according to the calibration signal and the sawtooth wave signal.

7. The power supply system according to claim 3, characterized in that: The filter circuit comprises: a current filter and a first converter, wherein the output end of the current filter is connected to the input end of the first converter, the current input end of the current filter is connected to the current output end of the power supply circuit, and the output end of the first converter is connected to the power supply circuit; The current filter is used to detect the resonance noise value of the other power supply according to the target current output by the power supply circuit, the first electric energy includes the target current, and the disturbance parameter includes the resonance noise value; The first converter is used to generate the calibration parameter corresponding to the resonant noise value.

8. The power supply system according to claim 7, characterized in that: The current filter comprises: a first comparator, wherein the negative input terminal of the first comparator is connected to the output terminal of the first comparator, the positive input terminal of the first comparator is connected to the current output terminal of the power supply circuit, and the output terminal of the first comparator is connected to the input terminal of the first converter.

9. The power supply system according to claim 8, characterized in that: The first converter includes: a second comparator, a first resistor, a second resistor and a second reference power supply, wherein the first end of the first resistor is connected to the output end of the current filter, the second end of the first resistor is connected to the positive input end of the second comparator, the second reference power supply is connected to the first end of the second resistor, the second end of the second resistor is connected to the negative input end of the second comparator, and the output end of the second comparator is connected to the power supply circuit.

10. The power supply system according to claim 3, characterized in that: The filter circuit comprises: a voltage filter and a second converter, wherein the output end of the voltage filter is connected to the input end of the second converter, the voltage input end of the voltage filter is connected to the voltage output end of the power supply circuit, and the output end of the second converter is connected to the power supply circuit; The voltage filter is used to detect the resonance noise value of the other power supply according to the target voltage output by the power supply circuit, the first electric energy includes the target voltage, and the disturbance parameter includes the resonance noise value; The second converter is used to generate the calibration parameter corresponding to the resonant noise.

11. The power supply system according to claim 10, characterized in that: The voltage filter includes: a third comparator, a third resistor and a fourth resistor, wherein the positive input terminal of the third comparator is connected to the voltage output terminal of the power supply circuit, the first end of the third resistor is connected to the negative input terminal of the third comparator, the second end of the third resistor is connected to the output terminal of the third comparator, the first end of the fourth resistor is connected to the positive input terminal of the third comparator, the second end of the fourth resistor is connected to the output terminal of the third comparator, and the output terminal of the third comparator is also linked to the input terminal of the second converter.

12. The power supply system according to claim 11, characterized in that: The second converter includes: a fourth comparator, a third reference power supply, a fifth resistor, a sixth resistor, a seventh resistor and a capacitor, wherein a first end of the fifth resistor is connected to a positive input terminal of the fourth comparator, a second end of the fifth resistor is connected to an output terminal of the fourth comparator, a first end of the capacitor is connected to a positive input terminal of the fourth comparator, a second end of the capacitor is connected to a first end of the sixth resistor, a second end of the sixth resistor is connected to an output terminal of the fourth comparator, a first end of the seventh resistor is connected to a positive input terminal of the fourth comparator, a second end of the seventh resistor is grounded, the third reference power supply is connected to a negative input terminal of the fourth comparator, and an output terminal of the fourth comparator is connected to the power supply circuit.

13. The power supply system according to claim 2, characterized in that: The processor is also used to: convert the power output parameters of the power supply system according to the multiple target power parameters, wherein the power output parameters are used to indicate the power that needs to be output by any of the power supply sources in the power supply system in response to the power supply demand; and determine the power adjustment amount according to the power output parameters and the power supply parameters.

14. The power supply system according to claim 13, characterized in that: The processor is further configured to: when the target electric energy parameter is a voltage value, calculate a product value between a reference voltage value and a voltage regulation rate to obtain a voltage regulation amount, wherein the electric energy output parameter includes the reference voltage value, the power supply parameter includes the voltage regulation rate, and the electric energy regulation amount includes the voltage regulation amount; When the target electric energy parameter is a current value, the product value between the reference current value and the current average rate is calculated to obtain the current regulation amount, wherein the electric energy output parameter includes the reference current value, the power supply parameter includes the current average rate, and the electric energy regulation amount includes the current regulation amount.

15. The power supply system according to claim 13, characterized in that: The processor is further configured to: when the target electric energy parameter is a current value, calculate an average value of a plurality of the target electric energy parameters to obtain a reference current value, wherein the electric energy output parameter includes the reference current value; In the case where the target power parameter is a voltage value, a reference voltage value corresponding to the target power parameter is determined from power parameters and voltage values ​​having a corresponding relationship, wherein the power output parameter includes the reference voltage value.

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