System and method for suppressing multiphase power phase coupling interference

Abstract

The application discloses a multi-phase power supply phase coupling interference suppression system and method, and relates to the technical field of power supply.The system comprises an interference feature extraction module and a compensation module.The interference feature extraction module is used for acquiring a first interference voltage signal of a reference voltage port and switch voltage signals of a plurality of first nodes, and extracting interference feature parameters based on the first interference voltage signal and the plurality of switch voltage signals.The interference feature parameters comprise an interference frequency, an interference amplitude and an interference initial phase.The compensation module is used for receiving the interference feature parameters, generating a first compensation voltage signal based on the interference feature parameters, and transmitting the first compensation voltage signal to the reference voltage port to correct the first interference voltage signal.The technical problem that the reference voltage signal of the reference voltage port of a single-phase load power supply is disturbed by multi-phase power supply and fluctuates is solved, and the stability and reliability of the single-phase load point power supply are improved.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and in particular to a system and method for suppressing phase coupling interference of multiphase power supplies. Background Technology

[0002] As servers evolve towards higher density and higher power, CPU platforms place more stringent demands on power supply systems. To meet the power supply requirements of CPU cores (such as the TDP of Turin processors exceeding 300W), multiphase power supply solutions are undoubtedly the optimal and only solution.

[0003] However, with the increase in the number of phases in multiphase power supplies, the increased density of motherboard components, and the growing number of phase-locked loops (POLs), the electromagnetic environment in the power supply area becomes increasingly complex. During operation, POLs are susceptible to interference from bypass multiphase power supplies, making their output highly prone to fluctuations. Significant voltage fluctuations can not only cause abnormal chip output voltages but, in severe cases, may even trigger server crashes, affecting the stable operation of the entire system. Summary of the Invention

[0004] This application provides a system and method for suppressing phase coupling interference from multiphase power supplies, so as to at least solve the problem in the related art that the reference voltage signal of the reference voltage port of a single-phase load power supply fluctuates due to interference from multiphase power supplies.

[0005] In a first aspect, this application provides a system for suppressing phase-coupled interference from a multiphase power supply. The system includes an interference feature extraction module and a compensation module. The interference feature extraction module is coupled to a reference voltage port of a single-phase load point power supply and multiple first nodes, respectively, and is used to acquire a first interference voltage signal from the reference voltage port and switching voltage signals from the multiple first nodes. Based on the first interference voltage signal and the multiple switching voltage signals, interference feature parameters are extracted; the interference feature parameters include interference frequency, interference amplitude, and interference initial phase. The compensation module is coupled to the interference feature extraction module and the reference voltage port, respectively, and is used to receive the interference feature parameters, generate a first compensation voltage signal based on the interference feature parameters, and transmit the first compensation voltage signal to the reference voltage port to correct the first interference voltage signal.

[0006] Secondly, this application provides a method for suppressing phase coupling interference of multiphase power supplies. The method involves acquiring a first interference voltage signal at a reference voltage port and switching voltage signals from multiple first nodes; extracting interference characteristic parameters based on the first interference voltage signal and the multiple switching voltage signals; the interference characteristic parameters include interference frequency, interference amplitude, and interference initial phase. The method receives the interference characteristic parameters, generates a first compensation voltage signal based on the interference characteristic parameters, and transmits the first compensation voltage signal to the reference voltage port to correct the first interference voltage signal.

[0007] This application enables real-time acquisition of switching voltage signals from multiple first nodes corresponding to a multi-phase power supply, as well as real-time acquisition of the first interference voltage signal formed after interference at the reference voltage port of a single-phase load point power supply. Interference frequency, interference amplitude, and initial phase are extracted based on the first interference voltage signal and multiple switching voltage signals. The interference frequency, interference amplitude, and initial phase constitute interference characteristic parameters. Based on the extracted interference characteristic parameters, they are processed to obtain a first compensation voltage signal, which is then transmitted to the reference voltage port to correct the first interference voltage signal, ensuring that the corrected voltage value of the first interference voltage signal is approximately equal to the voltage value of the reference voltage signal. Therefore, the multi-phase power supply phase coupling interference suppression system provided in this application can detect and respond to disturbances caused by bypassed multi-phase power supplies, effectively suppressing them through rapid compensation adjustment. This reduces the impact of reference voltage signal fluctuations on the output from the root cause, thereby helping to improve the stability and reliability of the single-phase load point power supply, providing more comprehensive protection, and ensuring the continuous normal operation of downstream circuits. This improves the problem of fluctuations in the reference voltage signal at the reference voltage port of the single-phase load power supply due to multi-phase power supply interference. Attached Figure Description

[0008] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 A structural block diagram of a multiphase power supply phase coupling interference suppression system provided in this application embodiment;

[0010] Figure 2 A structural block diagram of another multiphase power supply phase coupling interference suppression system provided in this application embodiment;

[0011] Figure 3 A structural block diagram of another multiphase power supply phase coupling interference suppression system provided in the embodiments of this application;

[0012] Figure 4 A structural block diagram of another multiphase power supply phase coupling interference suppression system provided in the embodiments of this application;

[0013] Figure 5 A flowchart illustrating a method for suppressing phase coupling interference of multiphase power supplies, provided in an embodiment of this application. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0015] It should be noted that, in the description of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. 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.

[0016] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] In related technologies, each phase of a multiphase power supply is configured with an independent output inductor, and ripple is reduced through phase reversal. When a multiphase power supply is operating, its corresponding output inductor generates a magnetic field with a frequency ranging from 500kHz to 1MHz. Adjacent output inductors form mutual inductance through magnetic coupling. This coupling is not only conducted through the power plane; even if the power plane of the multiphase power supply is separated from that of the single-phase load point power supply using ground isolation in the design, the magnetic field can still penetrate the PCB dielectric and radiate, forming other interference paths.

[0018] For example, in next-generation server platforms such as AMD Turin and Venice, the contradiction between the increased number of phases in multiphase power supplies and the need for a compact layout makes inductor magnetic coupling interference an unavoidable problem. Multiphase power supplies have a certain degree of anti-interference capability due to phase interleaving and cancellation, but single-phase point-of-load power supplies are more susceptible to interference due to the lack of compensation mechanisms and the sensitivity of the reference voltage port (Vref), resulting in interference of varying degrees. This can lead to problems such as deteriorated output ripple, excessive jitter, and loop instability, and in some cases, even power outages and system crashes.

[0019] Traditional shielding and isolation methods have limited effectiveness against this type of transplanar magnetic coupling, and layout locking cannot be mitigated by increasing spacing. Therefore, a dynamic adjustment scheme that can specifically suppress magnetic coupling interference in a compact space is needed.

[0020] Currently, the server industry primarily employs the following solutions to address electromagnetic coupling interference:

[0021] The first method is to protect the circuit by increasing the distance between the interference source and the protected circuit, such as increasing the distance between the POL chip and the multiphase inductor to more than 25mm.

[0022] The second method involves covering the output inductor casing of a multiphase power supply or the power supply at the load point of a single-phase power supply with a galvanized shield. This absorbs magnetic field energy through the eddy current effect, which theoretically can attenuate spatial electromagnetic interference.

[0023] The third method involves connecting a ferrite bead in series at the input of the power supply at the single-phase load point, utilizing the high-frequency loss characteristics of the ferrite bead to absorb interference energy induced by the magnetic field.

[0024] The aforementioned solutions address electromagnetic coupling interference in the server industry from three dimensions: spatial isolation, physical shielding, and energy absorption. However, none of these methods effectively mitigate the interference problem. For instance, spatial isolation weakens interference through distance, but in some high-density servers, there isn't sufficient space to meet the spatial isolation requirements; that is, this method is limited by equipment layout space. Shielding covers utilize the eddy current effect to attenuate magnetic fields, but this is technically challenging and costly. Connecting ferrite beads in series is ineffective against low-frequency interference.

[0025] Overall, these traditional solutions are mostly passive improvement measures. Although they can alleviate the interference problem to some extent, they are difficult to achieve dynamic suppression of interference. In the design of increasing server density, they often face the challenge of balancing effectiveness with space and cost.

[0026] In view of this, this application proposes a system and method for suppressing phase coupling interference of multiphase power sources to solve the above problems.

[0027] Figure 1 This is a structural block diagram of a multiphase power supply phase coupling interference suppression system provided in an embodiment of this application.

[0028] like Figure 1 As shown in the figure, this application embodiment provides a multiphase power supply phase coupling interference suppression system 100. The multiphase power supply phase coupling interference suppression system 100 can be applied to multiphase power supplies and single-phase load point power supplies, and suppresses the influence of multiphase power supplies on single-phase load point power supplies by collecting the interference signals of multiphase power supplies.

[0029] For example, a multiphase power supply includes multiple power stage modules and multiple output inductors, with each power stage module and output inductor connected in a one-to-one correspondence. The connection node between a power stage module and an output inductor is the first node.

[0030] For example, a multiphase power supply can be a 7-phase power supply. A 7-phase power supply can include 7 power pole modules and 7 output inductors. For example, a multiphase power supply can be a power supply for a central processing unit (CPU).

[0031] For example, a single-phase point-of-load power supply may include a POL (Point Of Load) and a single-phase SPS (Smart Power Stage).

[0032] A multiphase power supply phase coupling interference suppression system 100 includes an interference feature extraction module 10 and a compensation module 20. The interference feature extraction module 10 is coupled to a reference voltage port of a single-phase load point power supply and multiple first nodes, respectively, and is used to acquire a first interference voltage signal from the reference voltage port and switching voltage signals from the multiple first nodes, and extract interference feature parameters based on the first interference voltage signal and the multiple switching voltage signals. The interference feature parameters include interference frequency, interference amplitude, and interference initial phase. The compensation module 20 is coupled to the interference feature extraction module 10 and the reference voltage port, respectively, and is used to receive the interference feature parameters, generate a first compensation voltage signal based on the interference feature parameters, and transmit the first compensation voltage signal to the reference voltage port to correct the first interference voltage signal.

[0033] The corrected first interference voltage signal can be approximately equal to the reference voltage signal. The reference voltage signal is the undisturbed signal output from the reference voltage port of the single-phase load point power supply.

[0034] For example, if the difference between the corrected first interference voltage signal and the reference voltage signal is less than 5% of the difference in the reference voltage signal, the corrected first interference voltage signal can be considered approximately equal to the reference voltage signal. For instance, if the difference between the corrected first interference voltage signal and the reference voltage signal is less than 1% of the difference in the reference voltage signal, the corrected first interference voltage signal can be considered approximately equal to the reference voltage signal.

[0035] The multiphase power supply phase coupling interference suppression system 100 provided in this application embodiment can acquire the switching voltage signals of multiple first nodes corresponding to the multiphase power supply in real time through the interference feature extraction module 10. The switching voltage signals acquired at each first node exhibit periodic changes with the switching action of the power pole module, and the frequency is consistent with the power supply switching frequency, that is, consistent with the frequency of the magnetic field generated by the output inductor. Furthermore, the interference feature extraction module 10 can also acquire the first interference voltage signal formed after interference at the reference voltage port of the single-phase load point power supply. Based on the first interference voltage signal and multiple switching voltage signals, the interference frequency, interference amplitude, and interference initial phase are extracted. The interference frequency, interference amplitude, and interference initial phase constitute interference feature parameters. Subsequently, the compensation module 20 processes the interference feature parameters extracted by the interference feature extraction module 10 to obtain a first compensation voltage signal, and transmits the first compensation voltage signal to the reference voltage port to correct the first interference voltage signal so that the voltage value of the corrected first interference voltage signal is approximately equal to the voltage value of the reference voltage signal.

[0036] In summary, the multiphase power supply phase coupling interference suppression system 100 provided in this application embodiment can detect and respond to disturbances caused by bypass multiphase power supplies in real time based on the collaborative operation of the interference feature extraction module 10 and the compensation module 20. It can effectively suppress disturbances through rapid compensation and adjustment, thereby reducing the impact of reference voltage signal fluctuations on the output from the source. This helps to improve the stability and reliability of single-phase load point power supplies, providing them with more comprehensive protection and ensuring the continuous normal operation of downstream circuits.

[0037] like Figure 1 As shown, in some embodiments, the interference feature extraction module 10 includes: a first sampling unit 11, a first data conversion unit 12, a second sampling unit 13, a second data conversion unit 14, and a processing unit 15.

[0038] The first sampling unit 11 is coupled to the first node and is used to acquire the switching voltage signal of the first node.

[0039] A first sampling unit 11 can be connected in series between the power module and the output inductor of the multiphase power supply to couple the first sampling unit 11 to the first node. The first sampling unit 11 can convert the "switching current" at the first node into a "voltage signal". This voltage signal is the switching voltage signal, which changes periodically with the switching action of the power module. The frequency is the same as the power switching frequency, which is also the same as the frequency of the magnetic field generated by the output inductor.

[0040] In some examples, the number of first sampling units 11 is equal to the number of output inductors, to ensure that each first node can be connected to an independent first sampling unit 11, and the switching voltage signal corresponding to each first node is independently acquired without multiplexing or switching, reflecting the switching action of each phase in real time.

[0041] In some examples, the first sampling unit 11 may include a sampling resistor. A series sampling resistor can convert a current signal into a voltage signal (a switching voltage signal), achieving a current-to-voltage signal conversion.

[0042] For example, the sampling resistor can have a resistance value of less than 10. Ω The resistor has low impedance and low parasitic inductance, avoiding the introduction of additional interference and ensuring that the switching voltage signal accurately reflects the switching action.

[0043] For example, the sampling resistor can have a resistance value less than 1. Ω The resistor can further improve the accuracy of the switching voltage signal.

[0044] The first data conversion unit 12 is coupled to the first sampling unit 11 and is used to receive the switching voltage signal and process the switching voltage signal to generate a switching voltage digital signal.

[0045] The first data conversion unit 12 is coupled to the first sampling unit 11. The first data conversion unit 12 can collect the switching voltage signal obtained by the first sampling unit 11 in real time, so as to perform analog-to-digital conversion on the switching voltage signal to generate a digital switching voltage signal.

[0046] In some examples, the number of first data conversion units 12 is the same as the number of first sampling units 11, and they are connected in a one-to-one correspondence. Each first data conversion unit 12 can process a single set of voltage signals, avoiding sampling delay and signal crosstalk during multiplexing, and ensuring the accuracy of frequency and phase reference extraction. Furthermore, multiple first data conversion units 12 can synchronously trigger sampling to ensure the accuracy of subsequent phase difference calculations.

[0047] For example, the first data conversion unit 12 may include an analog-to-digital converter (ADC). The ADC can perform analog-to-digital conversion processing on the switching voltage signal to generate a corresponding switching voltage digital signal.

[0048] For example, the analog-to-digital converter (ADC) uses a high-speed ADC. The sampling rate of the high-speed ADC needs to match the switching frequency of the multiphase power supply to ensure sampling accuracy. For instance, the sampling rate of the high-speed ADC can be twice the switching frequency of the multiphase power supply.

[0049] In some examples, the first sampling unit 11 and the first data conversion unit 12 can be connected via differential signal lines. This helps to suppress common-mode noise and ensure signal integrity.

[0050] The second sampling unit 13 is coupled to the reference voltage port of the single-phase load point power supply and is used to obtain the reference voltage signal of the reference voltage port after being interfered with by the output inductance of the multi-phase power supply, that is, the first interference voltage signal.

[0051] In some examples, the second sampling unit 13 may include an RC filter network (or low-pass filter) connected in series between the reference voltage port and ground. While acquiring the first interference voltage signal, it can also reduce high-frequency glitches (such as harmonics of switching noise and EMI interference) in the first interference voltage signal, while retaining the "fundamental component of the interference".

[0052] For example, the RC filter network may include a current-limiting resistor and a first capacitor. The current-limiting resistor may be a 4.7kΩ resistor, and the first capacitor may be a multilayer ceramic capacitor (e.g., a 10pF MLCC capacitor). However, the structure of the RC filter network in this embodiment is not limited to this and can be adjusted according to actual conditions.

[0053] The second data conversion unit 14 is coupled to the second sampling unit 13 and is used to receive the first interference voltage signal and process the first interference voltage signal to generate a first interference reference voltage digital signal.

[0054] The first data conversion unit 12 is coupled to the first sampling unit 11. The first data conversion unit 12 can collect the first interference voltage signal obtained by the second sampling unit 13 in real time, so as to perform analog-to-digital conversion on the first interference voltage signal to generate a switching voltage digital signal.

[0055] In some examples, the second data conversion unit 14 may include an analog-to-digital converter (ADC). The ADC can perform analog-to-digital conversion on the first interference voltage signal to generate a first interference reference voltage digital signal corresponding to the first interference voltage signal.

[0056] Processing unit 15 is coupled to the first data conversion unit 12 and the second data conversion unit 14, respectively, and is used to acquire multiple switching voltage digital signals and a first interference reference voltage digital signal; compare the first interference reference voltage digital signal and the multiple switching voltage digital signals to determine the interfering switching voltage digital signal; and extract interference characteristic parameters based on the first interference reference voltage digital signal and the interfering switching voltage digital signal. The interfering switching voltage digital signal is the switching voltage digital signal with the smallest frequency difference from the first interference reference voltage digital signal among the multiple switching voltage digital signals.

[0057] With this configuration, processing unit 15 can acquire multiple switching voltage digital signals from multiple first data conversion units 12, and simultaneously acquire a first interference reference voltage digital signal from second data conversion unit 14. It compares the first interference reference voltage digital signal with the multiple switching voltage digital signals, selecting the switching voltage digital signal with the smallest frequency difference from the first interference reference voltage digital signal. This switching voltage digital signal can be considered the dominant interference source and is referred to as the interfering switching voltage digital signal. Processing unit 15 can calculate the phase difference between the first interference reference voltage digital signal and the interfering switching voltage digital signal, and determine the initial phase of the interference based on the phase difference. Processing unit 15 can acquire the frequency of the interfering switching voltage digital signal and determine the interference frequency based on the frequency. Furthermore, processing unit 15 can acquire the amplitude of the first interference reference voltage digital signal and determine the interference amplitude based on the amplitude. In other words, processing unit 15 can accurately locate the dominant interference source based on the acquired multiple switching voltage digital signals and the first interference reference voltage digital signal, and extract its frequency, amplitude, and phase difference, thus improving the difficulty of multi-interference source analysis.

[0058] In some examples, processing unit 15 may include a field-programmable gate array (FPGA).

[0059] The FPGA can synchronize the first data conversion unit 12 and the second data conversion unit 14 through hardware triggering, so that the switching voltage digital signal and the first interference reference voltage digital signal are time aligned, so as to facilitate the subsequent calculation of the phase difference between the first interference reference voltage digital signal and the interference switching voltage digital signal, and to determine the interference initial phase in the interference characteristic parameters.

[0060] like Figure 1 As shown, in some embodiments, the compensation module 20 includes a signal generation unit 21 and an inversion processing unit 22.

[0061] The signal generation unit 21 is coupled to the processing unit 15 and is used to receive interference characteristic parameters and generate a reference signal based on the interference characteristic parameters.

[0062] The signal generation unit 21 receives the interference frequency, interference amplitude and interference initial phase from the processing unit 15, and generates a reference signal based on the interference frequency, interference amplitude and interference initial phase.

[0063] In some examples, the signal generation unit 21 may include a direct digital synthesizer (DDS). The DDS receives the interference frequency, interference amplitude, and interference initial phase from the processing unit 15, and generates a pulse signal with the interference frequency, interference amplitude, and interference initial phase based on the interference frequency, interference amplitude, and interference initial phase. This pulse signal is referred to as a reference signal.

[0064] The inverting processing unit 22 is coupled to the signal generating unit 21 and the reference voltage port respectively, and is used to receive the reference signal and invert the reference signal to generate the first compensation voltage signal.

[0065] The inversion processing unit 22 receives a reference signal from the signal generation unit 21 and performs inversion processing on the reference signal to generate a voltage signal with the same frequency, equal amplitude, and opposite phase as the reference signal. This voltage signal is called the first compensation voltage signal. The first compensation voltage signal is transmitted to the reference voltage port to correct the first interference voltage signal so that the voltage value of the corrected first interference voltage signal is approximately equal to the voltage value of the reference voltage signal.

[0066] In some examples, the inverting processing unit 22 may include an inverting operational amplifier circuit. The inverting operational amplifier circuit can invert the reference signal generated by the signal generation unit 21 (phase shift by 180°) while keeping the amplitude unchanged, to obtain a cancellation signal that is the same frequency, equal amplitude, and inverse phase as the interference signal, i.e., the first compensation voltage signal, which is coupled to the reference voltage port to correct the first interference voltage signal.

[0067] However, the structure of the inverting processing unit 22 provided in this application embodiment is not limited to this. Other devices that can invert the reference signal can also be applied here. For example, the inverting processing unit 22 can also include a transistor inverting circuit.

[0068] With this configuration, the compensation module 20 provided in this application embodiment can work in concert with the signal generation unit 21 and the inverting processing unit 22 to directly inject the generated, same-frequency, equal-amplitude, and inverted cancellation signal (first compensation voltage signal) into the interfered reference voltage port, thereby achieving voltage-level cancellation in principle, rather than simply attenuating or shielding interference energy.

[0069] In some examples, the compensation module 20 further includes a second capacitor, which is coupled to the inverting processing unit 22 and the reference voltage port, respectively. The second capacitor is used to receive the first compensation voltage signal and couple the first compensation voltage signal to the reference voltage port to correct the first interference voltage signal.

[0070] For example, the second capacitor may be a multilayer ceramic capacitor (e.g., a 10pF MLCC capacitor).

[0071] like Figure 1 As shown, in some embodiments, the processing unit 15 is used to preset a threshold period, read the switching voltage digital signal from the first data conversion unit 12 according to the threshold period, read the first interference reference voltage digital signal from the second data conversion unit 14 according to the threshold period, and extract interference feature parameters according to the threshold period.

[0072] Subsequently, the signal generation unit 21 in the compensation module 20 can update the reference signal based on the updated interference characteristic parameters, so that the inverting processing unit 22 can update the first compensation voltage signal based on the updated reference signal and use the updated first compensation voltage signal to correct the first interference voltage signal.

[0073] With this configuration, the processing unit 15 reads the digital switching voltage signal and the digital first interference reference voltage signal periodically according to a threshold. This allows for timely detection of changes in the interference source during phase switching of the multi-phase power supply. The processing unit 15 accurately locates the dominant interference source in real time and updates the interference characteristic parameters accordingly. This enables the generation of a first compensation voltage signal corresponding to the new interference source, which is then used to correct the first interference voltage signal. Thus, uninterrupted compensation can be achieved through the multi-phase power supply phase coupling interference suppression system 100.

[0074] Figure 2 This is a block diagram of another multiphase power supply phase coupling interference suppression system provided in an embodiment of this application.

[0075] like Figure 2 As shown, in some embodiments, the multiphase power supply phase coupling interference suppression system 100 further includes a temperature sensing unit 30. The temperature sensing unit 30 is coupled to the processing unit 15 and can be used by the inverting processing unit 22 to generate the temperature of the unit and generate a temperature voltage value based on the temperature.

[0076] In some examples, the temperature sensing unit 30 may include an NTC temperature sensor (Negative Temperature Coefficient). The NTC temperature sensor can acquire the temperature of the inverting processing unit 22 in real time to generate a corresponding temperature voltage value.

[0077] The NTC temperature sensor can be placed near the inverting processing unit 22 to collect real-time data on the temperature of the inverting processing unit 22. Specifically, the NTC temperature sensor can be placed near the inverting processing unit 22 (e.g., the inverting operational amplifier circuit) to collect real-time data on the temperature of the inverting operational amplifier circuit.

[0078] For example, the minimum spacing between the NTC temperature sensor and the inverting operational amplifier circuit can be in the range of 10mm to 20mm. A minimum spacing of 10mm to 20mm ensures the accuracy of the temperature readings from the inverting operational amplifier circuit acquired by the NTC temperature sensor.

[0079] For example, the minimum spacing between the NTC temperature sensor and the inverting operational amplifier circuit can be any of 10mm, 12mm, 15mm, 18mm, or 20mm. However, the embodiments of this application do not limit the minimum spacing between the NTC temperature sensor and the inverting operational amplifier circuit to this, as long as the NTC temperature sensor can acquire the temperature of the inverting operational amplifier circuit.

[0080] The processing unit 15 is used to acquire temperature and voltage values, adjust the interference amplitude based on the temperature and voltage values, and transmit the adjusted interference amplitude as an interference characteristic parameter to the signal generation unit 21.

[0081] The processing unit 15 can read the temperature voltage value generated by the temperature sensing unit 30, convert it into an actual temperature value using a lookup table or algorithm, adjust the interference amplitude based on the acquired actual temperature value, and transmit the adjusted interference amplitude as an interference characteristic parameter to the compensation module 20. Subsequently, the signal generator in the compensation module 20 can generate a corresponding reference signal based on the updated interference amplitude and other interference characteristic parameters, so that the inverting processing unit 22 can generate a corresponding first compensation voltage signal based on the updated reference signal.

[0082] With this configuration, the multiphase power supply phase coupling interference suppression system 100 provided in this application embodiment deploys a temperature sensing unit 30 near the inverting processing unit 22. The processing unit 15 can obtain temperature and voltage values ​​from the temperature sensing unit 30 in real time to promptly correct the interference amplitude based on the temperature and voltage values, ensuring normal output even under temperature drift conditions. This overcomes the attenuation of suppression effect caused by environmental and load changes, ensuring long-term stability.

[0083] Figure 3 This is a structural block diagram of another multiphase power supply phase coupling interference suppression system provided in the embodiments of this application. Figure 4 This is a structural block diagram of another multiphase power supply phase coupling interference suppression system provided in an embodiment of this application. Wherein, Figure 4 and Figure 3 The difference is that, Figure 4 The multiphase power supply phase coupling interference suppression system 100 shown may also include a temperature sensing unit 30.

[0084] like Figure 3 and Figure 4As shown, in some embodiments, the inverting processing unit 22 includes an inverting operational amplifier circuit. The multiphase power supply phase coupling interference suppression system 100 also includes an adjustment unit 40.

[0085] The interference feature extraction module 10 is coupled to the adjustment unit 40 and is used to preset a reference voltage signal, acquire a second interference voltage signal, calculate the voltage difference between the reference voltage signal and the second interference voltage signal, and generate an adjustment command when the voltage difference is greater than 30% of the reference voltage signal value, and send the adjustment command to the adjustment unit 40. The second interference voltage signal is the first interference voltage signal corrected by the first compensation voltage signal.

[0086] Specifically, the acquired first compensation voltage signal is coupled to the reference voltage port to correct the first interference voltage signal. The corrected first interference voltage signal is called the second interference voltage signal.

[0087] The second sampling unit 13 in the interference feature extraction module 10 can acquire the voltage signal of the reference voltage port in real time. Therefore, the second sampling unit 13 can acquire the corrected first interference voltage signal, which is also the second interference voltage signal. The second data conversion unit 14 acquires the second interference voltage signal and performs analog-to-digital conversion on it to generate the corresponding second interference voltage digital signal.

[0088] The processing unit 15 is coupled to the adjustment unit 40. The processing unit 15 can be used to preset the reference voltage digital signal corresponding to the reference voltage signal, calculate the voltage difference between the reference voltage digital signal and the second interference voltage digital signal, and generate an adjustment command when the voltage difference is greater than 30% of the voltage value of the reference voltage digital signal, and send the adjustment command to the adjustment unit 40.

[0089] For example, when the voltage difference is less than 5% of the reference voltage digital signal, it can be considered that the generated first compensation voltage signal can effectively compensate and suppress the first interference voltage signal, and there is no need to adjust the first compensation voltage signal. Subsequently, the first interference voltage signal can be corrected based on the first compensation voltage signal.

[0090] For example, when the voltage difference is less than 1% of the reference voltage digital signal, it can be considered that the generated first compensation voltage signal can effectively compensate and suppress the first interference voltage signal, and there is no need to adjust the first compensation voltage signal. Subsequently, the first interference voltage signal can be corrected based on the first compensation voltage signal.

[0091] The adjustment unit 40 is coupled to the inverting operational amplifier circuit and is used to receive adjustment commands and adjust the gain of the inverting operational amplifier circuit based on the adjustment commands. The inverting operational amplifier circuit is used to generate a second compensation voltage signal based on the adjusted gain, transmit the second compensation voltage signal to the reference voltage port, and correct the second interference voltage signal until the second interference voltage signal is approximately equal to the reference voltage signal.

[0092] In some examples, the adjustment unit 40 may include a digital potentiometer, and the processing unit 15 may control the digital potentiometer based on I2C (Inter-Integrated Circuit, bidirectional two-wire synchronous serial bus) to adjust the gain of the inverting operational amplifier circuit so that the second compensation voltage signal generated by the inverting operational amplifier circuit after adjusting the gain can effectively correct the second interference voltage signal to improve the problem of interference residue at the reference voltage port.

[0093] For example, if the difference between the corrected second interference voltage signal and the reference voltage signal is less than 5% of the difference in the reference voltage signal, the corrected second interference voltage signal can be considered approximately equal to the reference voltage signal. For instance, if the difference between the corrected second interference voltage signal and the reference voltage signal is less than 1% of the difference in the reference voltage signal, the corrected second interference voltage signal can be considered approximately equal to the reference voltage signal.

[0094] With this configuration, the multiphase power supply phase coupling interference suppression system 100 provided in this application embodiment can determine whether the first compensation voltage signal can completely cancel the interference received by the first interference voltage signal based on the voltage signal of the reference voltage port it periodically acquires. When it is determined that the difference between the first interference voltage signal corrected by the first compensation voltage signal and the reference voltage signal is significant, the gain of the inverting operational amplifier circuit can be adjusted by the adjustment unit 40 to adjust the voltage value (amplitude) of the compensation signal formed by the inverting operational amplifier circuit. The compensation signal after adjusting the voltage value can be called the second compensation voltage signal. Subsequently, the inverting operational amplifier circuit couples the second compensation voltage signal to the reference voltage port to correct the second interference voltage signal until the second interference voltage signal is approximately equal to the reference voltage signal, thereby improving the problem of interference residue at the reference voltage port.

[0095] It should be noted that the reference voltage digital signal is the digital signal corresponding to the reference voltage signal, and the second interference voltage digital signal is the digital signal corresponding to the second interference voltage signal. The voltage difference between the reference voltage digital signal and the second interference voltage digital signal can be understood as the same voltage difference between the reference voltage signal and the second interference voltage signal.

[0096] In summary, firstly, the multiphase power supply phase coupling interference suppression system 100 provided in this application embodiment can extract interference characteristic parameters based on the voltage signals of each first node of the multiphase unit acquired in real time and the voltage signal output from the reference voltage port of the single-phase load point power supply. It then generates an inverse signal (first interference voltage signal) of the reference signal composed of the corresponding interference characteristic parameters and directly couples the first interference voltage signal to the reference voltage port to improve the interference of the multiphase power supply's output inductance on the reference voltage port of the single-phase load point power supply. That is, it achieves voltage-level cancellation in principle, rather than simply attenuating or shielding interference energy. Furthermore, since the processing unit 15 can acquire the voltage signals of each first node and the reference voltage port according to a threshold period, and update the interference characteristic parameters according to the updated voltage signals according to the threshold period, it can suppress and dynamically adjust interference at different frequencies, ensuring the stable operation of the multiphase power supply phase coupling interference suppression system 100 under various load conditions, reducing the failure of the multiphase power supply phase coupling interference suppression system 100 due to unnoticed frequency changes, and improving the interference suppression accuracy of the multiphase power supply phase coupling interference suppression system 100. For example, in the NF3290A8 project, reducing the interference amplitude from 42mV to 6mV can significantly reduce the interference of the multiphase power supply output inductance to the reference voltage port of the single-phase load point power supply.

[0097] Secondly, the multiphase power supply phase coupling interference suppression system 100 provided in this application embodiment, through the coordinated operation of the interference feature extraction module 10 and the compensation module 20, injects a first interference voltage signal into the reference voltage port of the phase load point power supply. This can improve the interference of the multiphase power supply output inductor on the reference voltage port of the single-phase load point power supply without increasing the spacing between the multiphase power supply output inductor and the reference voltage port of the single-phase load point power supply, and without changing the original layout of the multiphase power supply and the single-phase load point power supply. This makes it easy to apply to high-density server motherboards with layout lock.

[0098] Third, the multiphase power supply phase coupling interference suppression system 100 provided in this application embodiment is equipped with an adjustment unit 40, which can monitor and control residual interference fluctuations while improving the interference of the output inductance of the multiphase power supply on the reference voltage port of the single-phase load point power supply. It can adapt to the complex business scenarios of each server. The multiphase power supply phase coupling interference suppression system 100 can realize closed-loop control, record interference suppression data in real time, and further improve the accuracy of the multiphase power supply phase coupling interference suppression system 100.

[0099] Fourth, the multiphase power supply phase coupling interference suppression system 100 provided in this application embodiment is equipped with a temperature sensing unit 30, which can automatically compensate for the attenuation of suppression effect caused by temperature drift factors, and ensure a continuous, stable and high-precision suppression effect.

[0100] Figure 5 A flowchart illustrating a method for suppressing phase coupling interference of multiphase power supplies, provided in an embodiment of this application.

[0101] like Figure 5 As shown, this application provides a method for suppressing phase coupling interference of multiphase power supplies. This method can be applied to the multiphase power supply phase coupling interference suppression system provided in any of the above embodiments. The method for suppressing phase coupling interference of multiphase power supplies includes:

[0102] Step S10: Obtain the first interference voltage signal at the reference voltage port and the switching voltage signals of multiple first nodes. Extract interference characteristic parameters based on the first interference voltage signal and the multiple switching voltage signals; the interference characteristic parameters include interference frequency, interference amplitude, and interference initial phase.

[0103] In step S10, the switching voltage signals of multiple first nodes corresponding to the multi-phase power supply can be acquired in real time. The switching voltage signals acquired at each first node exhibit periodic changes with the switching action of the power electrode module, and the frequency is consistent with the power supply switching frequency, that is, consistent with the frequency of the magnetic field generated by the output inductor. Furthermore, the first interference voltage signal formed after interference at the reference voltage port of the single-phase load point power supply can also be acquired in real time. Based on the first interference voltage signal and multiple switching voltage signals, the interference frequency, interference amplitude, and interference initial phase are extracted. The interference frequency, interference amplitude, and interference initial phase constitute the interference characteristic parameters.

[0104] Step S20: Receive interference characteristic parameters, generate a first compensation voltage signal based on the interference characteristic parameters, and transmit the first compensation voltage signal to the reference voltage port to correct the first interference voltage signal.

[0105] In step S20, the interference feature parameters extracted by the interference feature extraction module are processed to obtain a first compensation voltage signal. This first compensation voltage signal is then transmitted to the reference voltage port to correct the first interference voltage signal, ensuring that the corrected voltage value of the first interference voltage signal is approximately equal to the voltage value of the reference voltage signal. The corrected first interference voltage signal can be approximately equal to the reference voltage signal. The reference voltage signal is the undisturbed signal output from the reference voltage port of the single-phase load point power supply.

[0106] For example, if the difference between the corrected first interference voltage signal and the reference voltage signal is less than 5% of the difference in the reference voltage signal, the corrected first interference voltage signal can be considered approximately equal to the reference voltage signal. For instance, if the difference between the corrected first interference voltage signal and the reference voltage signal is less than 1% of the difference in the reference voltage signal, the corrected first interference voltage signal can be considered approximately equal to the reference voltage signal.

[0107] In summary, the multiphase power supply phase coupling interference suppression method provided in this application embodiment can detect and respond to disturbances caused by bypass multiphase power supplies in real time, and achieve effective suppression through rapid compensation and adjustment. This reduces the impact of reference voltage signal fluctuations on the output from the source, thereby helping to improve the stability and reliability of single-phase load point power supplies, providing them with more comprehensive protection, and ensuring the continuous normal operation of downstream circuits.

[0108] In some embodiments, step S10 may include:

[0109] Obtain the switching voltage signal of the first node.

[0110] The switching voltage signal is processed to generate a digital switching voltage signal.

[0111] Obtain the reference voltage signal at the reference voltage port after it is interfered with by the output inductor of the multiphase power supply, which is also the first interference voltage signal.

[0112] The first interference voltage signal is processed to generate a first interference reference voltage digital signal.

[0113] The first interference reference voltage digital signal and multiple switching voltage digital signals are compared to determine the interfering switching voltage digital signal. Interference characteristic parameters are extracted based on the first interference reference voltage digital signal and the interfering switching voltage digital signal. The interfering switching voltage digital signal is the switching voltage digital signal with the smallest frequency difference from the first interference reference voltage digital signal among the multiple switching voltage digital signals.

[0114] With this configuration, the multiphase power supply phase coupling interference suppression method provided in this application embodiment can compare a first interference reference voltage digital signal with multiple switching voltage digital signals, and select the switching voltage digital signal with the smallest frequency difference from the first interference reference voltage digital signal from among the multiple switching voltage digital signals. This switching power supply digital signal can be understood as the dominant interference source, and is referred to as the interfering switching voltage digital signal. The phase difference between the first interference reference voltage digital signal and the interfering switching voltage digital signal is calculated, and the initial phase of the interference is determined based on the phase difference. The processing unit can acquire the frequency of the interfering switching voltage digital signal and determine the interference frequency based on the frequency. It can also acquire the amplitude of the first interference reference voltage digital signal and determine the interference amplitude based on the amplitude. In other words, based on the acquired multiple switching voltage digital signals and the first interference reference voltage digital signal, the dominant interference source can be accurately located, and its frequency, amplitude, and phase difference can be extracted, thus improving the difficulty of multi-interference source analysis.

[0115] In some embodiments, step S20 may include:

[0116] Receive interference characteristic parameters and generate a reference signal based on the interference characteristic parameters.

[0117] The reference signal is inverted to generate the first compensation voltage signal.

[0118] With this configuration, the multiphase power supply phase coupling interference suppression method provided in this application embodiment can directly inject a cancellation signal (first compensation voltage signal) of the same frequency, equal amplitude, and opposite phase into the interfered reference voltage port, thereby achieving voltage-level cancellation in principle, rather than simply attenuating or shielding interference energy.

[0119] like Figure 5 As shown, in some embodiments, in step S10, a threshold period can be preset, and interference feature parameters can be extracted according to the threshold period.

[0120] In step S10, the switching voltage digital signal can be read according to a threshold period; the first interference reference voltage digital signal can be read according to a threshold period; and based on the acquired updated switching voltage digital signal and the first interference reference voltage digital signal, interference feature parameters can be extracted according to a threshold period.

[0121] This configuration, by periodically reading the digital switching voltage signal and the digital first interference reference voltage signal at a threshold interval, allows for timely detection of changes in the interference source during phase switching of a multi-phase power supply. It enables real-time and precise location of the dominant interference source, and timely updating of interference characteristic parameters. This facilitates the generation of a corresponding first compensation voltage signal for the new interference source, which is then used to correct the first interference voltage signal. Thus, uninterrupted compensation can be achieved through a multi-phase power supply phase coupling interference suppression system.

[0122] like Figure 5 As shown, in some embodiments, the multiphase power supply phase coupling interference suppression system includes an inverting processing unit for generating a first compensation voltage signal. The multiphase power supply phase coupling interference suppression method further includes:

[0123] The temperature of the inverting processing unit is collected, and a temperature voltage value is generated based on the temperature.

[0124] The interference amplitude is adjusted based on temperature and voltage values, and the adjusted interference amplitude is used as the interference characteristic parameter.

[0125] This configuration allows for real-time acquisition of the temperature-voltage value corresponding to the temperature of the inverting processing unit. This enables timely correction of interference amplitude based on the temperature-voltage value, ensuring normal output even under temperature drift conditions. This overcomes the attenuation of suppression effect caused by environmental and load changes, guaranteeing long-term stability.

[0126] like Figure 5 As shown, in some embodiments, the method for suppressing phase coupling interference of multiphase power supplies further includes:

[0127] A reference voltage signal is preset, and a second interference voltage signal is obtained. The second interference voltage signal is the first interference voltage signal after being corrected by the first compensation voltage signal. The voltage difference between the reference voltage signal and the second interference voltage signal is calculated. When the voltage difference is greater than 30% of the voltage value of the reference voltage signal, an adjustment command is generated.

[0128] For example, when the voltage difference is less than 5% of the reference voltage digital signal, it can be considered that the generated first compensation voltage signal can effectively compensate and suppress the first interference voltage signal, and there is no need to adjust the first compensation voltage signal. Subsequently, the first interference voltage signal can be corrected based on the first compensation voltage signal.

[0129] For example, when the voltage difference is less than 1% of the reference voltage digital signal, it can be considered that the generated first compensation voltage signal can effectively compensate and suppress the first interference voltage signal, and there is no need to adjust the first compensation voltage signal. Subsequently, the first interference voltage signal can be corrected based on the first compensation voltage signal.

[0130] A second compensation voltage signal is generated based on the adjustment command, and the second compensation voltage signal is transmitted to the reference voltage port to correct the second interference voltage signal.

[0131] For example, if the difference between the corrected second interference voltage signal and the reference voltage signal is less than 5% of the difference in the reference voltage signal, the corrected second interference voltage signal can be considered approximately equal to the reference voltage signal. For instance, if the difference between the corrected second interference voltage signal and the reference voltage signal is less than 1% of the difference in the reference voltage signal, the corrected second interference voltage signal can be considered approximately equal to the reference voltage signal.

[0132] With this configuration, the multiphase power supply phase coupling interference suppression method provided in this application embodiment can determine whether the first compensation voltage signal can completely cancel the interference received by the first interference voltage signal based on the voltage signal of the reference voltage port acquired periodically. When it is determined that the difference between the first interference voltage signal corrected by the first compensation voltage signal and the reference voltage signal is significant, the voltage value (amplitude) of the first compensation signal can be indirectly adjusted by the adjustment unit. The first compensation signal after adjusting the voltage value can be called the second compensation voltage signal. Subsequently, the second compensation voltage signal is coupled to the reference voltage port to correct the second interference voltage signal until the second interference voltage signal is approximately equal to the reference voltage signal, thereby improving the problem of interference residue at the reference voltage port.

[0133] It should be noted that the reference voltage digital signal is the digital signal corresponding to the reference voltage signal, and the second interference voltage digital signal is the digital signal corresponding to the second interference voltage signal. The voltage difference between the reference voltage digital signal and the second interference voltage digital signal can be understood as the same voltage difference between the reference voltage signal and the second interference voltage signal.

[0134] For a description of the features in the embodiment of the method for suppressing phase coupling interference of multiphase power supply, please refer to the relevant description of the embodiment of the system for suppressing phase coupling interference of multiphase power supply, which will not be repeated here.

[0135] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method.

[0136] Embodiments of this application also provide an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the steps in any of the above embodiments of the method for suppressing phase coupling interference of multiphase power supplies.

[0137] Embodiments of this application also provide a computer-readable storage medium storing a computer program, wherein the computer program is configured to execute the steps in any of the above embodiments of the method for suppressing phase coupling interference of multiphase power supplies.

[0138] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard disk, magnetic disk, or optical disk.

[0139] Embodiments of this application also provide a computer program product, which includes a computer program that, when executed by a processor, implements the steps in any of the above embodiments of the method for suppressing phase coupling interference of multiphase power supplies.

[0140] Embodiments of this application also provide another computer program product, including a non-volatile computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps in any of the above embodiments of the method for suppressing phase coupling interference of multiphase power supplies.

[0141] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0142] The above provides a detailed description of a multiphase power supply phase coupling interference suppression system and method provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A system for suppressing phase coupling interference in a multiphase power supply, wherein the multiphase power supply includes multiple power stage modules and multiple output inductors, wherein the multiple power stage modules and the multiple output inductors are connected in a one-to-one correspondence, and the connection node between one power stage module and one output inductor is a first node; characterized in that, include: The interference feature extraction module is coupled to the reference voltage port of the single-phase load point power supply and multiple first nodes respectively, and is used to acquire the first interference voltage signal of the reference voltage port and the switching voltage signals of the multiple first nodes, and extract interference feature parameters based on the first interference voltage signal and the multiple switching voltage signals. The interference characteristic parameters include interference frequency, interference amplitude, and interference initial phase; The interference feature extraction module includes: The first sampling unit, coupled to the first node, is used to acquire the switching voltage signal of the first node; The first data conversion unit, coupled to the first sampling unit, is used to receive the switching voltage signal and process the switching voltage signal to generate a switching voltage digital signal. The second sampling unit is coupled to the reference voltage port of the single-phase load point power supply and is used to acquire the first interference voltage signal of the reference voltage port. The second data conversion unit, coupled to the second sampling unit, is used to receive the first interference voltage signal and process the first interference voltage signal to generate a first interference reference voltage digital signal. The processing unit, coupled to the first data conversion unit and the second data conversion unit respectively, is used to acquire a plurality of the switching voltage digital signals and the first interference reference voltage digital signal, compare the first interference reference voltage digital signal and the plurality of switching voltage digital signals to determine the interference switching voltage digital signal, and extract the interference feature parameters based on the first interference reference voltage digital signal and the interference switching voltage digital signal. Wherein, the interfering switch voltage digital signal is the switch voltage digital signal with the smallest frequency difference from the first interfering reference voltage digital signal among a plurality of switch voltage digital signals; The compensation module is coupled to the interference feature extraction module and the reference voltage port respectively, and is used to receive the interference feature parameters, generate a first compensation voltage signal based on the interference feature parameters, and transmit the first compensation voltage signal to the reference voltage port to correct the first interference voltage signal; The compensation module includes: A signal generation unit, coupled to the processing unit, is used to receive the interference characteristic parameters and generate a reference signal based on the interference characteristic parameters; An inverting processing unit is coupled to the signal generating unit and the reference voltage port, respectively, and is used to receive the reference signal and invert the reference signal to generate the first compensation voltage signal. The inverting processing unit includes an inverting operational amplifier circuit; the multiphase power supply phase coupling interference suppression system also includes an adjustment unit; The interference feature extraction module, coupled to the adjustment unit, is used to preset a reference voltage signal, acquire a second interference voltage signal, calculate the voltage difference between the reference voltage signal and the second interference voltage signal, and generate an adjustment command when the voltage difference is greater than 30% of the voltage value of the reference voltage signal, and send the adjustment command to the adjustment unit; the second interference voltage signal is a first interference voltage signal corrected by the first compensation voltage signal. The adjustment unit is coupled to the inverting operational amplifier circuit and is used to receive the adjustment command and adjust the gain of the inverting operational amplifier circuit based on the adjustment command. The inverting operational amplifier circuit generates a second compensation voltage signal based on the adjusted gain, and transmits the second compensation voltage signal to the reference voltage port to correct the second interference voltage signal.

2. The multiphase power supply phase coupling interference suppression system according to claim 1, characterized in that, The processing unit is configured to preset a threshold period, read the switching voltage digital signal from the first data conversion unit according to the threshold period, read the first interference reference voltage digital signal from the second data conversion unit according to the threshold period, and extract the interference characteristic parameters according to the threshold period.

3. The multiphase power supply phase coupling interference suppression system according to claim 1, characterized in that, It also includes a temperature sensing unit, which is coupled to the processing unit and is used to collect the temperature of the inverting processing unit and generate a temperature voltage value based on the temperature; The processing unit is configured to acquire the temperature and voltage values, adjust the interference amplitude based on the temperature and voltage values, and transmit the adjusted interference amplitude as the interference characteristic parameter to the signal generation unit.

4. A method for suppressing phase coupling interference of multiphase power supplies, characterized in that, A method for suppressing multiphase power supply phase coupling interference, applicable to any one of claims 1 to 3, comprises: Acquire a first interference voltage signal at a reference voltage port and switching voltage signals at multiple first nodes; extract interference characteristic parameters based on the first interference voltage signal and the multiple switching voltage signals; the interference characteristic parameters include interference frequency, interference amplitude, and interference initial phase; The system receives the interference characteristic parameters, generates a first compensation voltage signal based on the interference characteristic parameters, and transmits the first compensation voltage signal to the reference voltage port to correct the first interference voltage signal.

5. The method for suppressing phase coupling interference of multiphase power supplies according to claim 4, characterized in that, A preset threshold period is used to extract the interference feature parameters according to the preset threshold period.

6. The method for suppressing phase coupling interference of multiphase power supplies according to claim 4, characterized in that, The multiphase power supply phase coupling interference suppression system includes an inverting processing unit; The method further includes: The temperature of the inverting processing unit is collected, and a temperature voltage value is generated based on the temperature. The interference amplitude is adjusted based on the temperature and voltage values, and the adjusted interference amplitude is used as the interference characteristic parameter.

7. The method for suppressing phase coupling interference of multiphase power supplies according to claim 4, characterized in that, Also includes: The reference voltage signal is preset, and the second interference voltage signal is obtained; The second interference voltage signal is the first interference voltage signal corrected by the first compensation voltage signal; Calculate the voltage difference between the reference voltage signal and the second interference voltage signal. When the voltage difference is greater than 30% of the voltage value of the reference voltage signal, generate an adjustment command. A second compensation voltage signal is generated based on the adjustment command, and the second compensation voltage signal is transmitted to the reference voltage port to correct the second interference voltage signal.

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