Signal processing method and control circuit

Abstract

The present application discloses a signal processing method and a control circuit, the method comprising: obtaining first parameter information associated with the vibration frequency of a target electronic component; determining that the first parameter information satisfies a target condition, and adjusting the output voltage of a control circuit so that the vibration frequency of the target electronic component is within a first threshold range, wherein the vibration frequency within the first threshold range is outside the audible range of the human ear, wherein the output voltage applied to the target electronic component can cause the target electronic component to vibrate.

Description

Technical Field

[0001] The present application relates to the field of circuit signal control, and in particular to a signal processing method and a control circuit. Background Art

[0002] Ceramic capacitors cause the motherboard to deform and vibrate under the inverse piezoelectric effect, and the frequency of 20-20kHz can be heard by the human ear. This is the commonly encountered noise problem and is also a common problem in the notebook computer industry. The current practice is usually to continuously check software and system problems, and finally reduce the noise by reducing ceramic capacitors and increasing tantalum capacitors, but doing so will greatly increase the cost. Summary of the Invention

[0003] Embodiments of the present application provide a signal processing method and a control circuit.

[0004] In one aspect, an embodiment of the present application provides a signal processing method, applied to a control circuit, the method comprising:

[0005] Acquiring first parameter information associated with a vibration frequency of a target electronic component;

[0006] Determine that the first parameter information meets the target condition, adjust the output voltage of the control circuit so that the vibration frequency of the target electronic component is within a first threshold range, and the vibration frequency of the first threshold range is outside the audible range of the human ear, wherein the output voltage applied to the target electronic component can cause the target electronic component to vibrate.

[0007] Optionally, the control circuit includes a driving module and a switching element, and adjusting the output voltage of the control circuit so that the vibration frequency of the target electronic component is within a first threshold range includes:

[0008] The driving module is controlled to adjust from generating a driving signal with a first duty cycle to generating a driving signal with a second duty cycle, so as to drive the switching element to be turned on and off to generate a second output voltage, wherein the driving signal with the first duty cycle can drive the switching element to generate a first output voltage, and the second output voltage applied to the target electronic component can cause the vibration frequency of the target electronic component to be within a first threshold range.

[0009] Optionally, the acquiring the first parameter information associated with the vibration frequency of the target electronic component includes acquiring the output voltage of the control circuit through a detection circuit, or acquiring the vibration frequency of the target electronic component through a vibration sensor.

[0010] Optionally, the control circuit further includes a first feedback module and a second feedback module, and the method further includes:

[0011] The output voltages of the control circuit at different times are obtained respectively through the first feedback module and the second feedback module, wherein:

[0012] The first feedback module has a first detection accuracy for determining whether the output voltage at a first moment is within a first fluctuation range of a preset reference voltage;

[0013] The second feedback module has a second detection accuracy for determining whether the output voltage at a second moment is within a second fluctuation range of a preset reference voltage, wherein the second moment has an extended time compared to the first moment.

[0014] When the output voltage is within a first fluctuation range of the reference voltage at a first moment and when the output voltage is within a second fluctuation range of the reference voltage at a second moment, the driving module is enabled to generate a driving signal.

[0015] Optionally, the control circuit further includes an output voltage amplitude limiting module for limiting the amplitude of the output voltage. The method further includes enabling the driving module to generate a driving signal based on the amplitude of the output voltage being within a third range.

[0016] Optionally, the output voltage amplitude limiting module includes a first comparison module and a second comparison module, and the enabling of the driving module to generate the driving signal based on the amplitude of the output voltage being within a third range includes:

[0017] The first comparison module controls the amplitude of the output voltage to not exceed a first voltage threshold, and the second comparison module controls the amplitude of the output voltage to not be lower than a second voltage threshold, the first voltage threshold is lower than the second voltage threshold, and the interval from the first voltage threshold to the second voltage threshold is the third range.

[0018] On the other hand, an embodiment of the present disclosure further provides a control circuit, including:

[0019] a detection module configured to obtain first parameter information associated with a vibration frequency of a target electronic component;

[0020] A control module is configured to determine that the first parameter information meets a target condition, adjust the output voltage of the control circuit so that the vibration frequency of the electronic component is within a first threshold range, and the vibration frequency of the first threshold range is outside the audible range of the human ear, wherein the output voltage applied to the target electronic component can cause the target electronic component to vibrate.

[0021] Optionally, the control circuit also includes a driving module and a switching element, and the control module is further configured to control the driving module to adjust from generating a driving signal with a first duty cycle to generating a driving signal with a second duty cycle, so as to drive the switching element to be turned on and off to generate a second output voltage, wherein the driving signal with the first duty cycle can drive the switching element to generate a first output voltage, and the second output voltage applied to the target electronic component can cause the vibration frequency of the target electronic component to be within a first threshold range.

[0022] Optionally, the detection module is further configured to obtain the output voltage of the control circuit through a detection circuit, or obtain the vibration frequency of the target electronic component through a vibration sensor.

[0023] Optionally, the control circuit further includes an output voltage amplitude limiting module, configured to enable the driving module to generate a driving signal when the amplitude of the output voltage is limited to be within a third range. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a flowchart of an information processing method according to an embodiment of the present application;

[0025] Figure 2 This is a flowchart of an embodiment of the information processing method of the present application.

[0026] Figure 3 This is a structural block diagram of a control circuit according to an embodiment of the present application.

[0027] Figure 4 This is a structural block diagram of a detection circuit according to an embodiment of the present application.

[0028] Figure 5 This is a structural block diagram of a feedback circuit according to an embodiment of the present application.

[0029] Figure 6 This is a structural block diagram of a voltage limiting circuit according to an embodiment of the present application.

[0030] Figure 7 This is a structural block diagram of a control circuit according to a specific embodiment of the present application.

[0031] Figure numerals: 1-driving module; 2-switching element; 3-detection module; 4-control module; 5-first feedback module; 6-second feedback module; 7-delay device; 8-first comparison module; 9-second comparison module; 10-target electronic component; 11-output voltage amplitude limiting module. DETAILED DESCRIPTION

[0032] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0033] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0034] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0035] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0036] It should also be understood that although the present application has been described with reference to certain specific examples, those skilled in the art will readily be able to implement many other equivalent forms of the present application.

[0037] The above and other aspects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0038] Specific embodiments of the present application will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments described are merely examples of the present application and may be implemented in a variety of ways. Familiar and / or repetitive functions and structures are not described in detail to avoid obscuring the present application with unnecessary or redundant details. Therefore, the specific structural and functional details described herein are not intended to be limiting, but rather serve merely as a basis and representative basis for the claims to teach those skilled in the art to variously utilize the present application with substantially any suitable detailed structure.

[0039] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may all refer to one or more of the same or different embodiments according to the present application.

[0040] Figures 1 to 2 1 shows a flow chart of an information processing method according to an embodiment of the present application. Figure 1 and Figure 7 As shown, including:

[0041] S100, obtaining first parameter information associated with a vibration frequency of a target electronic component;

[0042] For example, during the operation of electronic devices such as laptop computers, the built-in electronic components will vibrate under the action of the inverse piezoelectric effect, thereby driving the vibration of the printed circuit board, resulting in obvious noise interference. This embodiment uses a control circuit to adjust the vibration frequency of the electronic components to eliminate noise interference. This embodiment can obtain first parameter information associated with the vibration frequency of the target electronic component 10 through the control circuit. Specifically, during the operation of the control circuit, the switching element 2 is continuously turned on and off to generate an output voltage. The output voltage will cause the vibration frequency of the target electronic component 10 to change. The first parameter information can represent the change in the vibration frequency of the target electronic component 10, and can also represent the frequency of change of the output voltage of the control circuit. By obtaining the first parameter information associated with the vibration frequency of the target electronic component 10, the current vibration frequency of the target electronic component 10 or the change in the output voltage of the control circuit can be determined.

[0043] S200 , determining that the first parameter information meets a target condition, and adjusting the output voltage of the control circuit so that the vibration frequency of the target electronic component is within a first threshold range.

[0044] Exemplarily, after obtaining the first parameter information associated with the vibration frequency of the target electronic component 10, it is determined whether the obtained first parameter information meets the target condition, the target condition characterizing that the vibration caused by the target electronic component 10 causes obvious noise, and the noise generated under the target condition can be heard by the human ear, that is, under the target condition, the vibration frequency of the target electronic component 10 is within the audible range of the human ear. When it is determined that the first parameter information meets the target condition, the output voltage of the control circuit is adjusted so that the vibration frequency of the target electronic component 10 is within the first threshold range. Specifically, in this embodiment, the output voltage of the control circuit is adjusted so that the vibration frequency of the target electronic component 10 is within the first threshold range, and the vibration frequency of the first threshold range is outside the audible range of the human ear. The vibration frequency in the audible range of the human ear is 20-20kHz, and the vibration frequency of the first threshold range is less than 20hz, or greater than 20khz. In the process of adjusting the vibration frequency of the target electronic component 10, the output voltage of the circuit must first be controlled to adjust the vibration frequency of the target electronic component 10. The output voltage applied to the target electronic component 10 can cause the target electronic component 10 to vibrate. After the output voltage of the control circuit changes, the vibration frequency of the target electronic component 10 will also change.

[0045] This embodiment adjusts the output voltage of the control circuit to change the vibration frequency of the target electronic component 10, placing it within a first threshold range outside the audible range of the human ear. Because the vibrations induced by the target electronic component 10 can cause vibrations on the printed circuit board (PCB), which can lead to noise interference, changing the vibration frequency of the target electronic component 10 reduces the vibrations on the PCB, thereby mitigating the effects of the noise interference.

[0046] In one embodiment of the present application, the target electronic component includes a ceramic capacitor, which can be affected by the inverse piezoelectric effect and generate noise. When a user uses a laptop computer, the built-in electronic component including the ceramic capacitor will vibrate under the drive of the voltage, thereby causing the printed circuit board to vibrate and generate noise that can be heard by the human ear. During the noise elimination operation, the output voltage of the control circuit can be adjusted to change the vibration frequency of the target electronic component 10 so that the vibration frequency of the target electronic component 10 is within a first threshold range outside the audible range of the human ear, thereby reducing the vibration of the printed circuit board and eliminating the noise generated by the vibration of the printed circuit board. The above method of this embodiment is simple to operate, does not require the addition of tantalum capacitors to reduce noise, and can reduce costs.

[0047] In one embodiment of the present application, Figure 3 and Figure 7 As shown, the control circuit includes a driving module 1 and a switching element 2, and adjusting the output voltage of the control circuit so that the vibration frequency of the target electronic component is within a first threshold range includes:

[0048] Controlling the driving module to adjust from generating a driving signal with a first duty cycle to generating a driving signal with a second duty cycle, so as to drive the switching element to be turned on and off to generate a second output voltage;

[0049] Exemplarily, the control circuit includes a driver module 1 and a switch element 2. The driver module 1 is connected to the switch element 2. The driver module 1 generates a driving voltage to drive the switch element 2 to generate an output voltage. The output voltage can be applied to the target electronic component 10 to cause the target electronic component 10 to vibrate. In the case where the noise generated by the vibration caused by the target electronic component 10 is audible to the human ear, the output voltage of the control circuit can be adjusted to change the vibration frequency of the target electronic component 10 so that the vibration frequency of the target electronic component 10 is within a first threshold range outside the audible range of the human ear. When the control circuit is in operation, the driver module 1 generates a duty cycle driving signal to control the switch element 2 to continuously turn on and off to generate the output voltage. When the driver module 1 generates a driving signal with a first duty cycle, the driving signal with the first duty cycle can drive the switch element 2 to generate a first output voltage. The first output voltage, when applied to the target electronic component 10, can cause the vibration frequency of the target electronic component 10 to be within the audible range of the human ear. When the vibration frequency of the target electronic component 10 is within the audible range of the human ear, the output voltage of the control circuit is adjusted so that the vibration frequency of the target electronic component 10 is within a first threshold range outside the audible range of the human ear. Specifically, the control driving module 1 changes the duty cycle of the driving signal to drive the switching element 2 to turn on and off at different frequencies to change the output voltage. For example, the control driving module 1 can be adjusted from generating a driving signal with a first duty cycle to generating a driving signal with a second duty cycle to drive the switching element 2 to turn on and off to generate a second output voltage. The driving signal with the second duty cycle can drive the switching element 2 to generate the second output voltage. The second output voltage, when applied to the target electronic component 10, can cause the vibration frequency of the target electronic component 10 to be within the first threshold range. Since the vibration frequency in the audible range of the human ear is 20-20 kHz, the driving module 1 can be controlled to change the duty cycle of the driving signal to drive the switching element 2 to be turned on and off to generate a second output voltage lower than the first output voltage. The second output voltage applied to the target electronic component 10 can change the vibration frequency of the target electronic component 10. For example, the vibration frequency of the target electronic component 10 can be reduced to less than 20 Hz or greater than 20 kHz, so that the vibration frequency of the target electronic component 10 is outside the audible range of the human ear, thereby eliminating the noise generated by the vibration of the target electronic component 10.

[0050] In one embodiment of the present application, obtaining the first parameter information associated with the vibration frequency of the target electronic component includes obtaining the output voltage of the control circuit through a detection circuit, or obtaining the vibration frequency of the target electronic component through a vibration sensor.

[0051] For example, Figure 4As described above, when the vibration of the target electronic component 10 causes noise audible to the human ear, first parameter information associated with the vibration frequency of the target electronic component can be obtained. Because the first parameter associated with the vibration frequency of the target electronic component can represent changes in the vibration frequency of the target electronic component 10 and can also represent the frequency of changes in the output voltage of the control circuit, after obtaining the first parameter information, the current vibration frequency of the target electronic component 10 can be adjusted based on the first parameter information.

[0052] Specifically, the output voltage of the control circuit can be obtained through the detection circuit to obtain the first parameter information associated with the vibration frequency of the target electronic component 10. Since the output voltage is applied to the target electronic component 10, the vibration frequency of the target electronic component 10 changes. In the case of obtaining the first parameter information by obtaining the output voltage of the control circuit through the detection circuit, the first parameter information is associated with the vibration frequency of the target electronic component 10. Based on the obtained first parameter information, the current vibration frequency of the target electronic component 10 can be adjusted. Alternatively, the vibration frequency of the target electronic component 10 can be obtained through the vibration sensor 11, and the first parameter information associated with the vibration frequency of the target electronic component 10 can be directly obtained. Based on the first parameter information associated with the vibration frequency of the target electronic component 10, the current vibration frequency of the target electronic component 10 can be adjusted. For example, the vibration frequency of the target electronic component 10 can be adjusted to outside the audible range of the human ear to eliminate the noise generated by the vibration of the target electronic component 10.

[0053] In one embodiment of the present application, Figure 2 、 Figure 5 and Figure 7 As shown, the control circuit further includes a first feedback module 5 and a second feedback module 6, and the method further includes:

[0054] S300, obtaining the output voltage of the control circuit at different times respectively through the first feedback module and the second feedback module, wherein:

[0055] The first feedback module has a first detection accuracy for determining whether the output voltage at a first moment is within a first fluctuation range of a preset reference voltage;

[0056] The second feedback module has a second detection accuracy for determining whether the output voltage at a second moment is within a second fluctuation range of a preset reference voltage, wherein the second moment has an extended time compared to the first moment.

[0057] Exemplarily, the control circuit includes a first feedback module 5 and a second feedback module 6, each of which is connected to the switching element 2. Because the driving module 1 can generate a driving voltage to drive the switching element 2 to generate an output voltage, the output voltage of the control circuit at different times can be obtained through the first feedback module 5 and the second feedback module 6. During operation of the control circuit, it is necessary to maintain the output voltage of the control circuit within the fluctuation range of a preset reference voltage to ensure that the output voltage of the control circuit remains stable.

[0058] The output voltage of the control circuit at a first moment can be obtained through the first feedback module 5. The first feedback module has a first detection accuracy for determining whether the output voltage at the first moment is within a first fluctuation range of a preset reference voltage. Specifically, the first detection accuracy is 5% of the reference voltage. The preset reference voltage can be 1V, and the first fluctuation range of the preset reference voltage is 0.95V-1.05V. In other words, during the operation of the control circuit, the output voltage of the control circuit at any moment needs to be obtained through the first feedback module 5 to determine whether the output voltage at that moment is within the range of 0.95V-1.05V.

[0059] Furthermore, after the first feedback module 5 determines that the output voltage at the first moment is within the first fluctuation range of the preset reference voltage, the second feedback module 6 obtains the output voltage of the control circuit at the second moment. The second feedback module 6 has a second detection accuracy to determine whether the output voltage at the second moment is within the second fluctuation range of the preset reference voltage, with the second moment having an extended time compared to the first moment. Specifically, the second detection accuracy is 1% of the reference voltage. The preset reference voltage can be 1V, and the second fluctuation range of the preset reference voltage is 0.99V-1.01V. In other words, during the operation of the control circuit, the output voltage of the control circuit at the second moment needs to be obtained through the second feedback module 6 to determine whether the output voltage at that moment is within the range of 0.99V-1.01V. By obtaining the output voltage of the control circuit at different moments through the first feedback module 5 and the second feedback module 6, the fluctuation range of the output voltage can be determined with high precision.

[0060] S400 , enabling the driving module to generate a driving signal when the output voltage is within a first fluctuation range of the reference voltage at a first moment and the output voltage is within a second fluctuation range of the reference voltage at a second moment.

[0061] For example, when the first feedback module 5 determines that the output voltage is within the first fluctuation range of the reference voltage at the first moment, and the second feedback module 6 determines that the output voltage is within the second fluctuation range of the reference voltage at the second moment, it indicates that the current output voltage of the control circuit is within a high-precision stable range. At this time, the control circuit can enable the driving module 1 to generate a driving signal to drive the switching element 2.

[0062] In one embodiment of the present application, Figure 2 As shown, the control circuit further includes an output voltage amplitude limiting module 11 for limiting the amplitude of the output voltage. The method further includes:

[0063] S500 : enabling the driving module to generate a driving signal based on the amplitude of the output voltage being within a third range.

[0064] Exemplarily, the control circuit includes an output voltage amplitude limiting module 11 for limiting the amplitude of the output voltage. When the control circuit determines through the first feedback module 5 that the output voltage at the first moment is not within the first fluctuation range of the preset reference voltage, or determines through the second feedback module 6 that the output voltage at the second moment is not within the second fluctuation range of the preset reference voltage, it indicates that the current output voltage is within an unstable range. At this time, it is necessary to adjust the amplitude of the output voltage through the voltage amplitude limiting module 11. Specifically, the amplitude of the output voltage is adjusted to within the third range of the voltage amplitude, and the third range of the voltage amplitude is within the range of about 5% of the preset reference voltage. After the amplitude of the output voltage is adjusted to within the third range of the voltage amplitude, it indicates that the current output voltage of the control circuit is within a stable range. Based on the amplitude of the output voltage being within the third range, the drive module 1 is enabled to generate a drive signal to drive the switching element 2.

[0065] In one embodiment of the present application, Figure 6 and Figure 7 As shown, the output voltage amplitude limiting module 11 includes a first comparison module 8 and a second comparison module 9. The enabling of the driving module to generate a driving signal based on the amplitude of the output voltage being within a third range includes:

[0066] The first comparison module controls the amplitude of the output voltage to not exceed a first voltage threshold, and the second comparison module controls the amplitude of the output voltage to not be lower than a second voltage threshold, the first voltage threshold is lower than the second voltage threshold, and the interval from the first voltage threshold to the second voltage threshold is the third range.

[0067] Exemplarily, the output voltage amplitude limiting module 11 includes a first comparison module 8 and a second comparison module 9, which are respectively connected to the switching element 2, and enables the driving module to generate a driving signal based on the amplitude of the output voltage being within a third range, specifically including:

[0068] During operation of the control circuit, to maintain output voltage stability, the first comparison module controls the output voltage amplitude to not exceed a first voltage threshold, and the second comparison module controls the output voltage amplitude to not fall below a second voltage threshold. The first voltage threshold is less than the second voltage threshold. Specifically, when the preset reference voltage is 1V, the first voltage threshold can be +5% of the preset reference voltage, that is, 1.05V, and the second voltage threshold can be -5% of the preset reference voltage, that is, 0.95V. The interval from the first voltage threshold to the second voltage threshold is a third range, and the third range of voltage amplitude is 0.95V-1.05V. The first and second comparison modules adjust the real-time output voltage amplitude to within the third range of voltage amplitude to maintain voltage stability in the control circuit.

[0069] Based on the same inventive concept, the second aspect of the present application further provides a control circuit corresponding to an information processing method.

[0070] Figure 7 The schematic diagram of the control circuit provided in the embodiment of the present application is shown, which specifically includes:

[0071] a detection module 3 configured to obtain first parameter information associated with the vibration frequency of the target electronic component 10;

[0072] The control module 4 is configured to determine that the first parameter information meets the target condition, adjust the output voltage of the control circuit so that the vibration frequency of the target electronic component 10 is within a first threshold range, and the vibration frequency of the first threshold range is outside the audible range of the human ear, wherein the output voltage applied to the target electronic component 10 can cause the target electronic component 10 to vibrate.

[0073] In one embodiment of the present application, the control circuit also includes a driving module 1 and a switching element 2, and the control module 4 is further configured to control the driving module 1 to adjust from generating a driving signal with a first duty cycle to generating a driving signal with a second duty cycle, so as to drive the switching element 2 to be turned on and off to generate a second output voltage, wherein the driving signal with the first duty cycle can drive the switching element 2 to generate a first output voltage, and the second output voltage applied to the target electronic component 10 can cause the vibration frequency of the target electronic component 10 to be within a first threshold range.

[0074] In one embodiment of the present application, the detection module 3 is further configured to obtain the output voltage of the control circuit through the detection circuit 3 , or obtain the vibration frequency of the target electronic component 10 through the vibration sensor 12 .

[0075] In one embodiment of the present application, the control circuit further includes an output voltage amplitude limiting module 11, which is configured to enable the driving module 1 to generate a driving signal when the amplitude of the output voltage is limited to be within a third range.

[0076] In one embodiment of the present application, the control circuit further includes a first feedback module 5 and a second feedback module 6, wherein the first feedback module 5 and the second feedback module 6 are respectively used to obtain the output voltage of the control circuit at different times, wherein:

[0077] The first feedback module 5 has a first detection accuracy for determining whether the output voltage at a first moment is within a first fluctuation range of a preset reference voltage;

[0078] The second feedback module 6 has a second detection accuracy for determining whether the output voltage at a second moment is within a second fluctuation range of a preset reference voltage, wherein the second moment has an extended time compared to the first moment.

[0079] The driving module 1 is further configured to generate a driving signal when the output voltage is within a first fluctuation range of the reference voltage at a first moment and when the output voltage is within a second fluctuation range of the reference voltage at a second moment.

[0080] In one embodiment of the present application, the output voltage amplitude limiting module 11 includes a first comparison module 8 and a second comparison module 9.

[0081] The first comparison module 8 is used to control the amplitude of the output voltage not to exceed a first voltage threshold, and the second comparison module 9 is used to control the amplitude of the output voltage not to be lower than a second voltage threshold, the first voltage threshold is less than the second voltage threshold, and the interval from the first voltage threshold to the second voltage threshold is the third range.

[0082] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A signal processing method, applied to a control circuit, comprising: Acquiring first parameter information associated with a vibration frequency of a target electronic component; Determining that the first parameter information satisfies a target condition, adjusting an output voltage of a control circuit so that a vibration frequency of the target electronic component is within a first threshold range, where the vibration frequency within the first threshold range is outside an audible range of a human ear, wherein the output voltage applied to the target electronic component can cause the target electronic component to vibrate; the control circuit includes a drive module and a switch element, and adjusting the output voltage of the control circuit so that the vibration frequency of the target electronic component is within the first threshold range includes: The driving module is controlled to adjust from generating a driving signal with a first duty cycle to generating a driving signal with a second duty cycle, so as to drive the switching element to be turned on and off to generate a second output voltage, wherein the driving signal with the first duty cycle can drive the switching element to generate a first output voltage, and the second output voltage applied to the target electronic component can cause the vibration frequency of the target electronic component to be within a first threshold range.

2. The method according to claim 1, wherein obtaining the first parameter information associated with the vibration frequency of the target electronic component comprises obtaining the output voltage of the control circuit through a detection circuit, or obtaining the vibration frequency of the target electronic component through a vibration sensor.

3. The method according to claim 1, wherein the control circuit further comprises a first feedback module and a second feedback module, and the method further comprises: The output voltages of the control circuit at different times are obtained respectively through the first feedback module and the second feedback module, wherein: The first feedback module has a first detection accuracy for determining whether the output voltage at a first moment is within a first fluctuation range of a preset reference voltage; The second feedback module has a second detection accuracy for determining whether the output voltage at a second moment is within a second fluctuation range of a preset reference voltage, wherein the second moment has an extended time compared to the first moment. When the output voltage is within a first fluctuation range of the reference voltage at a first moment and when the output voltage is within a second fluctuation range of the reference voltage at a second moment, the driving module is enabled to generate a driving signal.

4. The method according to claim 3, wherein the control circuit further comprises an output voltage amplitude limiting module for limiting the amplitude of the output voltage, and the method further comprises enabling the driving module to generate a driving signal based on the amplitude of the output voltage being within a third range, wherein: The third range is a range of about 5% of the preset reference voltage.

5. The method according to claim 4, wherein the output voltage amplitude limiting module comprises a first comparison module and a second comparison module, and the enabling of the driving module to generate the driving signal based on the amplitude of the output voltage being within a third range comprises: The first comparison module controls the amplitude of the output voltage to not exceed a first voltage threshold, and the second comparison module controls the amplitude of the output voltage to not be lower than a second voltage threshold, the first voltage threshold is lower than the second voltage threshold, and the interval from the first voltage threshold to the second voltage threshold is the third range.

6. A control circuit comprising: a detection module configured to obtain first parameter information associated with a vibration frequency of a target electronic component; A control module is configured to determine that the first parameter information meets the target condition, and adjust the output voltage of the control circuit so that the vibration frequency of the electronic component is within a first threshold range, and the vibration frequency of the first threshold range is outside the audible range of the human ear, wherein the output voltage applied to the target electronic component can cause the target electronic component to vibrate; the control circuit also includes a driving module and a switching element, and the control module is further configured to control the driving module to adjust from generating a driving signal with a first duty cycle to generating a driving signal with a second duty cycle to drive the switching element to be turned on and off to generate a second output voltage, wherein the driving signal with the first duty cycle can drive the switching element to generate a first output voltage, and the second output voltage applied to the target electronic component can cause the vibration frequency of the target electronic component to be within the first threshold range. 7 . The control circuit according to claim 6 , wherein the detection module is further configured to obtain the output voltage of the control circuit through a detection circuit, or obtain the vibration frequency of the target electronic component through a vibration sensor.

8. The control circuit according to claim 6, further comprising an output voltage amplitude limiting module, configured to limit the amplitude of the output voltage to within a third range to enable the driving module to generate a driving signal, wherein: The third range is a range of about 5% of the preset reference voltage.

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