Detection device of multiphase power supply and power supply system

Abstract

The utility model provides a detection device of a multi-phase power supply and a power supply system. The detection device comprises a multi-path coupling inductor and a detection assembly, wherein the multi-path coupling inductors are coupled with power supply inductors in a multi-phase power supply one by one and are used for inducing magnetic field changes around the power supply inductors and obtaining electromagnetic induction signals based on the magnetic field changes; and the detection assembly is connected with the multi-path coupling inductor and is used for receiving the electromagnetic induction signal and determining a detection result of the multi-phase power supply according to the electromagnetic induction signal. The detection device disclosed by the utility model can efficiently and accurately monitor the working condition of each path of power supply in the multi-phase power supply.

Description

Technical Field

[0001] This disclosure relates to the field of power supply detection, and in particular to a detection device and power supply system for a multiphase power supply. Background Technology

[0002] Multiphase switching power supply systems use PWM (Pulse Width Modulation) control chips to detect the output voltage and adjust the PWM duty cycle to control the switching of MOSFETs (Field-Effect Transistors), thereby regulating the output voltage. They are commonly used in high-power loads such as CPUs and GPUs. In a multiphase switching power supply system, a fault in any phase circuit can lead to uneven current distribution, excessively high temperatures in high-current areas, and reduced component lifespan. In severe cases, it can cause motherboard burnout and system instability. Therefore, monitoring the operation of each phase circuit is crucial.

[0003] In existing technologies, the operating status of each phase is mainly determined by observing the voltage waveforms of each phase using an oscilloscope. However, this method is labor-intensive and cannot be implemented in the mass production stage. Utility Model Content

[0004] This disclosure provides a detection device and power supply system for multiphase power sources, which at least solves the above-mentioned technical problems existing in the prior art.

[0005] According to a first aspect of this disclosure, a detection device for a multiphase power supply is provided, the detection device comprising a multi-coupled inductor and a detection component; wherein:

[0006] The multi-coupled inductor is coupled one by one with the power supply inductor in the multiphase power supply to sense the change in the magnetic field around the power supply inductor and obtain an electromagnetic induction signal based on the change in the magnetic field.

[0007] The detection component is connected to the multi-channel coupling inductor and is used to receive the electromagnetic induction signal and determine the detection result of the multiphase power supply based on the electromagnetic induction signal.

[0008] In one possible implementation, the detection component includes an electromagnetic signal processing module and a microprocessor module;

[0009] The electromagnetic signal processing module is used to receive the electromagnetic induction signal and obtain a digital signal based on the electromagnetic induction signal;

[0010] The microprocessor module is used to determine the detection result of the multiphase power supply based on the digital signal.

[0011] In one possible implementation, the electromagnetic signal processing module includes a magnetoelectric converter, a signal amplifier, and an analog-to-digital converter;

[0012] The magneto-electric converter is used to convert the electromagnetic induction signal into a current signal;

[0013] The signal amplifier is used to convert and amplify the current signal to obtain an amplified voltage signal;

[0014] The analog-to-digital converter is used to convert the amplified voltage signal into a digital signal.

[0015] In one embodiment, the magnetoelectric converter includes a Hall element, a signal processing unit, and a signal conversion unit;

[0016] The Hall element is used to generate a Hall voltage based on an electromagnetic induction signal;

[0017] The signal processing unit is used to preprocess the Hall voltage to obtain a preprocessed voltage signal;

[0018] The signal conversion unit is used to convert the preprocessed voltage signal into a current signal.

[0019] In one possible implementation, the signal processing unit includes an amplification subunit and a filtering subunit;

[0020] The amplification subunit is used to amplify the Hall voltage to obtain the amplified Hall voltage;

[0021] The filtering subunit is used to filter the amplified Hall voltage to obtain a preprocessed voltage signal.

[0022] In one embodiment, the detection device further includes a display module connected to the detection component, which is used to receive the detection results of the multiphase power supply and display the detection results.

[0023] In one embodiment, the display module and the detection component are connected via a Universal Serial Bus (USB).

[0024] In one embodiment, the coupled inductor includes an adhesive layer for bonding and connecting with the power supply inductor.

[0025] In one possible implementation, the magnetoelectric converter is a Hall sensor.

[0026] According to a second aspect of this disclosure, a power supply system is provided, the power supply system including a multiphase power supply and a detection device as described in any of the above embodiments, wherein the multiphase power supply is used to supply power and the detection device is used to detect the multiphase power supply.

[0027] This disclosure discloses a detection device and power supply system for multiphase power supplies. Through multi-coupled inductors and detection components, it enables batch testing of the status of multiphase power supplies. The testing process is simple and easy to implement, improving testing efficiency and accuracy. Moreover, the detection device has low cost, saving on testing expenses.

[0028] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0029] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:

[0030] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0031] Figure 1 A schematic diagram of the composition structure of a multiphase power supply detection device according to an embodiment of the present disclosure is shown;

[0032] Figure 2 A schematic diagram of the composition structure of a detection component according to an embodiment of the present disclosure is shown;

[0033] Figure 3 A schematic diagram of the composition structure of a power supply system according to an embodiment of the present disclosure is shown. Detailed Implementation

[0034] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0035] According to a first aspect of the embodiments of this disclosure, a detection device for a multiphase power supply is provided, such as... Figure 1 As shown, the detection device includes a multi-channel coupled inductor and a detection component; wherein, the multi-channel coupled inductor is coupled one by one with the power inductor in the multi-phase power supply, and is used to sense the magnetic field changes around the power inductor, and obtain electromagnetic induction signals based on the magnetic field changes; the detection component is connected to the multi-channel coupled inductor and is used to receive the electromagnetic induction signals, and determine the detection results of the multi-phase power supply based on the electromagnetic induction signals.

[0036] A multiphase power supply refers to a power supply system comprising multiple switching power supplies, each of which is equipped with an inductor, referred to herein as a power supply inductor. The detection device of this disclosure includes multiple coupled inductors, the number of which is determined based on the number of switching power supplies in the multiphase power supply, to ensure that each power supply inductor has a corresponding coupled inductor for monitoring.

[0037] During the testing process, multiple coupled inductors are placed close to their corresponding power supply inductors. In one embodiment, the coupled inductors are provided with an adhesive layer to bond the coupled inductors and the power supply inductors together. When the switching power supply is in normal operation, an alternating voltage passes through the power supply inductor. Due to the alternating voltage, the power supply inductor generates a changing magnetic field. This changing magnetic field further affects the coupled inductors, thereby generating electromagnetic induction signals in the coupled inductors. The detection component receives these electromagnetic induction signals generated by the coupled inductors. By processing and analyzing these signals, the detection component can determine the detection results of the multi-phase power supply, including whether the power switch of that phase is operating normally or abnormally.

[0038] The testing device in this embodiment can perform batch testing of multi-phase power supply status. The testing process is simple and easy to implement, improving testing efficiency and accuracy. Moreover, the testing device has low cost, saving testing costs.

[0039] In another embodiment of this disclosure, the detection component may specifically include an electromagnetic signal processing module and a microprocessor module; wherein, the electromagnetic signal processing module is used to receive electromagnetic induction signals and obtain digital signals based on the electromagnetic induction signals; the microprocessor module is used to determine the detection result of the multiphase power supply according to the digital signals.

[0040] In this embodiment, an electromagnetic signal processing module receives electromagnetic induction signals from the coupled inductor. These electromagnetic induction signals reflect changes in the magnetic field around the power supply inductor. The electromagnetic signal processing module amplifies and filters these electromagnetic induction signals, converting the processed analog signals into digital signals for subsequent analysis. The digital signals are then processed by a microprocessor module. The microprocessor module can use an integrated microcontroller, which analyzes and processes these digital signals according to preset algorithms and logic to obtain the detection results. Specifically, if the microprocessor generates a PWM wave, it indicates that the switching power supply for that phase is functioning normally. If the microprocessor does not generate a PWM wave, it indicates that the switching power supply for that phase is malfunctioning.

[0041] In another embodiment of this disclosure, the electromagnetic signal processing module may specifically include a magnetoelectric converter, a signal amplifier, and an analog-to-digital converter. The magnetoelectric converter is used to convert an electromagnetic induction signal into a current signal; the signal amplifier is used to convert and amplify the current signal to obtain an amplified voltage signal; and the analog-to-digital converter is used to convert the amplified voltage signal into a digital signal.

[0042] Specifically, since electromagnetic induction signals are typically very weak, they are first converted into current signals using a magnetoelectric converter for subsequent processing. In one embodiment, the magnetoelectric converter can be a Hall sensor. Then, an operational amplifier or other signal amplifier is used to convert and amplify the current signal output from the magnetoelectric converter, resulting in an amplified voltage signal. Finally, an analog-to-digital converter converts the voltage signal into a more stable, discrete digital signal for processing by the subsequent microprocessor module.

[0043] In another embodiment of this disclosure, the magneto-electric converter may specifically include a Hall element, a signal processing unit, and a signal conversion unit; wherein, the Hall element is used to generate a Hall voltage based on an electromagnetic induction signal; the signal processing unit is used to preprocess the Hall voltage to obtain a preprocessed voltage signal; and the signal conversion unit is used to convert the preprocessed voltage signal into a current signal.

[0044] Specifically, the magnetic field lines in the magnetic field generated by the power supply inductor pass perpendicularly through the Hall element. At this time, the electrons in the Hall element are deflected by the Lorentz force. For example, under the influence of the magnetic field, electrons will deflect to one side of the Hall element, while an equal amount of positive charge will appear on the other side. Due to the accumulation of charge, a potential difference is formed on both sides of the Hall element; this potential difference is the Hall voltage. The magnitude of the Hall voltage Uh is related to the strength of the magnetic field B and the current I passing through the Hall element, and the relationship is expressed as Uh = K * B * I, where K is the sensitivity coefficient of the Hall element. The stronger the magnetic field and the larger the current, the higher the generated Hall voltage. The Hall voltage generated by the Hall element is usually very weak, generally only a few millivolts, making it difficult to process and use by subsequent circuits. Therefore, a signal processing unit is needed to amplify and filter the Hall voltage to improve the signal strength and quality. In one embodiment, the signal processing unit typically includes amplification subunits (such as amplifiers) and filtering subunits (such as filters). The amplification subunit amplifies the weak Hall voltage to a level suitable for subsequent circuit processing, while the filtering subunit removes noise and interference from the signal, improving the signal-to-noise ratio of the pre-processed voltage signal.

[0045] Finally, the processed voltage signal is converted into a current signal by a signal conversion unit. For example, a voltage-to-current conversion circuit can be used, which is based on components such as operational amplifiers. Based on the input voltage signal, the output current is controlled by the cooperation of components such as resistors and capacitors in the circuit, so that the output current is proportional to the input voltage.

[0046] In another embodiment of this disclosure, the detection device is further configured with a display module. The display module is connected to the detection component, acquires the detection results of the multi-phase power supply from the detection component, and displays them so that the testing personnel can see the detection results more intuitively. In one possible embodiment, the detection component and the display module can be connected via USB.

[0047] Figure 2 illustrates a specific structural composition of the detection component of this disclosure. Figure 2 As shown, the detection component includes a Hall sensor, an operational amplifier, an analog-to-digital converter, a microcontroller, and a display module connected via USB. The specific implementation details are described above and will not be repeated here.

[0048] According to another aspect of the embodiments of this disclosure, a power supply system is provided, such as... Figure 3 As shown, the power supply system includes the aforementioned detection device and a multi-phase power supply, which is used to detect the multi-phase power supply. The multi-phase power supply includes a controller chip (IC), a multi-phase switching power supply (phase 1, phase 2... phase N), and a power inductor L. The power inductor in the multi-phase power supply is physically connected to the coupling inductor in the testing device.

[0049] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this disclosure can be achieved, and this is not limited herein.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A detection device for multiphase power supplies, characterized in that, The detection device includes a multi-coupled inductor and a detection component; wherein: The multi-coupled inductor is coupled one by one with the power supply inductor in the multiphase power supply to sense the change in the magnetic field around the power supply inductor and obtain an electromagnetic induction signal based on the change in the magnetic field. The detection component is connected to the multi-channel coupling inductor and is used to receive the electromagnetic induction signal and determine the detection result of the multiphase power supply based on the electromagnetic induction signal.

2. The apparatus according to claim 1, characterized in that, The detection component includes an electromagnetic signal processing module and a microprocessor module; The electromagnetic signal processing module is used to receive the electromagnetic induction signal and obtain a digital signal based on the electromagnetic induction signal; The microprocessor module is used to determine the detection result of the multiphase power supply based on the digital signal.

3. The apparatus according to claim 2, characterized in that, The electromagnetic signal processing module includes a magneto-electric converter, a signal amplifier, and an analog-to-digital converter. The magneto-electric converter is used to convert the electromagnetic induction signal into a current signal; The signal amplifier is used to convert and amplify the current signal to obtain an amplified voltage signal; The analog-to-digital converter is used to convert the amplified voltage signal into a digital signal.

4. The apparatus according to claim 3, characterized in that, The magneto-electric transducer includes a Hall element, a signal processing unit, and a signal conversion unit; The Hall element is used to generate a Hall voltage based on an electromagnetic induction signal; The signal processing unit is used to preprocess the Hall voltage to obtain a preprocessed voltage signal; The signal conversion unit is used to convert the preprocessed voltage signal into a current signal.

5. The apparatus according to claim 4, characterized in that, The signal processing unit includes an amplification subunit and a filtering subunit; The amplification subunit is used to amplify the Hall voltage to obtain the amplified Hall voltage; The filtering subunit is used to filter the amplified Hall voltage to obtain a preprocessed voltage signal.

6. The apparatus according to claim 1, characterized in that, The detection device further includes a display module, which is connected to the detection component and is used to receive the detection results of the multiphase power supply and display the detection results.

7. The apparatus according to claim 6, characterized in that, The display module and the detection component are connected via a Universal Serial Bus (USB).

8. The apparatus according to claim 1, characterized in that, The coupling inductor includes an adhesive layer for bonding and connecting with the power supply inductor.

9. The apparatus according to claim 3, characterized in that, The magneto-electric converter is a Hall sensor.

10. A power supply system, comprising a multiphase power supply and a detection device according to any one of claims 1-9, wherein the multiphase power supply is coupled to the detection device; wherein, The multiphase power supply is used for power supply, and the detection device is used for detecting the multiphase power supply.

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