Dynamic response optimization method and device, power supply module and electronic equipment

Abstract

The invention provides a dynamic response optimization method and device, a power module and electronic equipment. The power supply module comprises a converter and is connected with a load. The method comprises the following steps: executing a slow start operation; if it is detected that the load changes, the voltage change amplitude is calculated according to the working voltage of the converter after the slow start operation; if the voltage change amplitude is greater than or equal to a first preset threshold value, adjusting the initial switching frequency of a switching tube of the converter at least once according to a second preset threshold value and the preset frequency of the voltage change amplitude to obtain a first switching frequency; adjusting the first switching frequency for at least one time according to a loop operation result of the converter and a preset frequency range to obtain a second switching frequency; and performing frequency limiting control on the second switching frequency according to a preset frequency range, and controlling the output voltage of the converter to be within a preset range of the working voltage. By means of the method, the response speed to the falling or overshoot phenomenon can be increased, and therefore the performance and reliability of the power module are improved.

Description

Technical Field

[0001] The present application relates to the technical field of power supplies, and in particular, to a method and device for optimizing dynamic response, a power supply module, and an electronic device. Background Art

[0002] In a power supply module with frequency modulation control, when the load at the output end of the power supply module suddenly increases or decreases, the output voltage of the converter in the power supply module will experience a drop or overshoot. When the amplitude of the drop or overshoot of the output voltage is too large, the response speed of the loop control of the converter to the drop or overshoot phenomenon will become slow, and it is unable to timely adjust the energy at the output end of the converter in the power supply module, resulting in the output voltage of the converter being in a dropped or overshot state for a long time, thereby affecting the performance and reliability of the power supply module. Summary of the Invention

[0003] In view of the above, it is necessary to provide a method and device for optimizing dynamic response, a power supply module, and an electronic device, which solve the technical problem that the phenomenon of drop or overshoot cannot be quickly responded to, resulting in the output voltage of the converter being in a dropped or overshot state for a long time, affecting the performance and reliability of the power supply module.

[0004] On the one hand, the present application provides a method for optimizing dynamic response, which is applied to a power supply module. The power supply module is connected to a load, and the power supply module includes a converter. The method includes: in response to a received instruction, performing a soft-start operation; if it is detected that the number of loads changes, calculating in real time the voltage change amplitude of the converter according to the working voltage of the converter after the soft-start operation is completed; if the voltage change amplitude is greater than or equal to a first preset threshold, adjusting the initial switching frequency of the switching tube of the converter at least once according to a second preset threshold and a preset frequency corresponding to the voltage change amplitude to obtain a first switching frequency; adjusting the first switching frequency at least once according to the loop operation result of the converter and a preset frequency range to obtain a second switching frequency; and performing frequency limiting control on the second switching frequency according to the preset frequency range to control the output voltage of the converter to be within a preset range of the working voltage.

[0005] In some embodiments of the present application, the calculating in real time the voltage change amplitude of the converter according to the working voltage of the converter after the soft-start operation is completed includes: detecting in real time the output voltage of the converter after the number of loads changes, sampling the working voltage to obtain a first sampled voltage value, and sampling the output voltage to obtain a second sampled voltage value, and calculating in real time the voltage change amplitude according to the first sampled voltage value and the second sampled voltage value.

[0006] In some embodiments of the present application, there are multiple second sampling voltage values. Calculating the voltage change amplitude in real time according to the first sampling voltage value and the second sampling voltage values includes: determining the larger and smaller values between the first sampling voltage value and each second sampling voltage value, and determining the difference between the larger value and the smaller value as the voltage change amplitude.

[0007] In some embodiments of the present application, any one of the at least one adjustment to the initial switching frequency includes: adjusting the initial switching frequency according to the preset frequency corresponding to the voltage change amplitude, detecting in real time the first updated voltage output by the converter at the adjusted initial switching frequency, and calculating the updated voltage change amplitude according to the first updated voltage and the working voltage. If the updated voltage change amplitude is greater than or equal to the first preset threshold, perform the next adjustment to the adjusted initial switching frequency according to the preset frequency corresponding to the updated voltage change amplitude, or, if the updated voltage change amplitude is less than the first preset threshold, stop the adjustment and determine the adjusted initial switching frequency as the first switching frequency.

[0008] In some embodiments of the present application, the loop operation result includes a loop regulation frequency. Any one of the at least one adjustment to the first switching frequency includes: obtaining the loop regulation frequency output by the converter at the first switching frequency. If the loop regulation frequency is greater than the upper limit value of the preset frequency range, adjust the first switching frequency according to the loop regulation frequency, obtain the second updated voltage and the updated loop regulation frequency output by the converter at the adjusted first switching frequency, and calculate the current voltage change amplitude according to the second updated voltage and the working voltage. If the current voltage change amplitude is greater than the second preset threshold, perform the next adjustment to the adjusted first switching frequency according to the preset frequency corresponding to the current voltage change amplitude, or, if the current voltage change amplitude is less than or equal to the second preset threshold, or the loop regulation frequency is within the preset frequency range, stop the adjustment and determine the adjusted first switching frequency as the second switching frequency.

[0009] In some embodiments of the present application, the second preset threshold is less than the first preset threshold. The method further includes: if the voltage change amplitude is greater than the second preset threshold and less than the first preset threshold, adjusting the initial switching frequency according to the loop operation result, or, if the voltage change amplitude is less than or equal to the second preset threshold, performing frequency limiting control on the initial switching frequency according to the preset frequency range.

[0010] In some embodiments of the present application, the limiting frequency control of the second switching frequency according to the preset frequency range includes: adjusting the second switching frequency so that the adjusted target switching frequency is within the preset frequency range.

[0011] On the other hand, the present application provides a dynamic response optimization device, which runs on a power supply module. The power supply module is connected to a load. The power supply module includes a converter. The device includes: an execution unit, configured to perform a soft start operation in response to a received instruction; a calculation unit, configured to, if it is detected that the number of loads changes, calculate in real time the voltage change amplitude of the converter according to the working voltage of the converter after the soft start operation is completed; an adjustment unit, configured to, if the voltage change amplitude is greater than or equal to a first preset threshold, adjust the initial switching frequency of the switching tube of the converter at least once according to a second preset threshold and a preset frequency corresponding to the voltage change amplitude to obtain a first switching frequency, and the adjustment unit is further configured to adjust the first switching frequency at least once according to the loop operation result of the converter and a preset frequency range to obtain a second switching frequency; a control unit, configured to perform limiting frequency control on the second switching frequency according to the preset frequency range, and control the output voltage of the converter to be within a preset range of the working voltage.

[0012] On the other hand, the present application provides a power supply module. The power supply module is connected to a load. The power supply module includes a converter and a control circuit. The converter is configured to convert an input voltage into an output voltage to supply power to the load, and the control circuit is configured to implement the dynamic response optimization method.

[0013] On the other hand, the present application provides an electronic device. The electronic device includes a storage device, a processing device, a load, and the power supply module. The storage device stores at least one instruction, and the processing device executes the at least one instruction to implement the dynamic response optimization method.

[0014] Through the above implementation manners, if the voltage change amplitude is greater than or equal to the first preset threshold, it is determined that the amplitude of the output voltage drop or the amplitude of overshoot of the converter after the load changes is large. By directly adjusting the initial switching frequency according to the preset frequency corresponding to the voltage change amplitude, the energy at the output end of the converter can be quickly adjusted, so that the time for the output voltage of the converter to be in a drop state or an overshoot state can be shortened, and further the output voltage of the converter can be adjusted in time, so that the output voltage of the converter tends to be stable (control the output voltage of the converter to be within the preset range of the working voltage). Description of the Drawings

[0015] Figure 1 It is an application environment diagram of the dynamic optimization response method provided by an embodiment of the present application.

[0016] Figure 2 It is a flowchart of the dynamic response optimization method provided by an embodiment of the present application.

[0017] Figure 3 It is a comparison schematic diagram of the adjustment effect of the dynamic response optimization method provided by an embodiment of the present application.

[0018] Figure 4 It is a flowchart of the calculation method of the voltage change amplitude provided by an embodiment of the present application.

[0019] Figure 5 It is a flowchart of the generation method of the first switching frequency provided by an embodiment of the present application.

[0020] Figure 6 It is a flowchart of the generation method of the second switching frequency provided by an embodiment of the present application.

[0021] Figure 7 It is a functional module diagram of the dynamic response optimization device provided by an embodiment of the present application.

[0022] Figure 8 It is a schematic structural diagram of a power supply module provided by an embodiment of the present application.

[0023] Figure 9 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0024] It should be noted that in the present application, "at least one" means one or more, and "a plurality" means two or more than two. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims, and drawings of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0025] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly, using words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0026] When the load at the output end of the Power Supply Unit (PSU) suddenly increases or decreases, there will be an instantaneous shortage or excess of energy at the output end. At this time, the output voltage of the converter in the power supply module will also drop or change in amplitude accordingly. The sampling module of the power supply module will transmit the voltage sampling value of the output voltage of the converter in real time. The loop of the converter will calculate the voltage change value based on the voltage sampling value, and then calculate the corresponding adjustment amplitude based on the voltage change value. In a power supply module with a frequency modulation control strategy, the frequency modulation range is generally very wide. When the output voltage drops or the overshoot amplitude is too large, it takes a relatively long time to adjust the switching frequency of the converter through the adjustment amplitude calculated by the loop to make the output voltage of the converter tend to be stable after the load changes. Being in a state of large voltage drop or overshoot for a long time will not only affect the performance indicators and reliability of the power supply module in actual applications.

[0027] To solve this technical problem, the embodiments of the present application provide a dynamic response optimization method, device, power supply module and electronic device. The dynamic response optimization method will be described below in combination with the application scenario and the flowchart.

[0028] As Figure 1 shown, it is an application environment diagram of the dynamic optimization response method provided by an embodiment of the present application. In Figure 1 , the power supply module 10 is connected to the load 20. After converting the input voltage into an output voltage, the power supply module 10 supplies power to the load 20.

[0029] The power supply module 10 can also be referred to as a power supply unit or a power supply. For example, the power supply module 10 can be a power supply unit or a power supply in a radio frequency power supply (such as the radio frequency power supply GW4030), a pulse power supply, a charging pile, and any charging module. The power supply module 10 includes a converter, and the converter includes a switching tube. The converter is used to convert the input voltage into an output voltage to supply power to the load 20. The converter can be a resonant circuit (LLC circuit) that realizes a constant output voltage by controlling the switching frequency (frequency regulation).

[0030] The load 20 is any device or any component that needs electrical energy to work. In some embodiments, the load 20 can be, but is not limited to: devices such as vehicles, computers, and mobile phones.

[0031] In another embodiment of the present application, the power module 10 can be an internal power source of any electronic device, and the power module 10 is used to supply power to a load in the electronic device or a load connected to the electronic device. The electronic device can be any electronic product that can perform human-computer interaction with a user. For example, it can be a communication device, a radio frequency device, a radio device, etc. Among them, the communication device includes, but is not limited to: a personal computer, a tablet computer, a smart phone, a game console, an Internet Protocol Television (IPTV), etc. The radio frequency device includes, but is not limited to: a radio transmitter, a radio receiver, a radio frequency amplifier, a radio frequency filter, a radio frequency antenna, etc. The radio device includes, but is not limited to: a radio, a television set, a radio remote control, a radio measuring instrument, etc.

[0032] The electronic device may further include a network device and / or a user device. Among them, the network device includes, but is not limited to, a single network server, a server group composed of multiple network servers, or a cloud composed of a large number of hosts or network servers based on Cloud Computing.

[0033] The load in the electronic device can be a processing device, a storage device, a control device, etc. in the electronic device. The load connected to the electronic device can also be devices such as a computer and a mobile phone, and is not limited thereto in practical applications.

[0034] As Figure 2 shown, it is a flowchart of the dynamic response optimization method provided by the embodiment of the present application. The execution subject of the dynamic response optimization method is the power module, such as Figure 1 the power module 10 shown. According to different requirements, the order of each step in this flowchart can be adjusted according to actual detection requirements, and some steps can be omitted.

[0035] S11, in response to the received instruction, perform a soft start operation.

[0036] In some embodiments, the received instruction can be a power-on instruction, or the received instruction can also be other instructions, and the present application does not limit this. The power module is connected to the load, and the power module includes a converter and a switching tube of the converter. Among them, the converter is used to convert the input voltage into an output voltage to supply power to the load. For example, the converter can be a resonant circuit (LLC circuit) that realizes a constant output voltage by controlling the switching frequency (frequency regulation). The frequency of the switching tube can be adjusted, and the switching tube can be a MOSFET tube, or other devices that can be used as a switching tube, such as a triode or a diode.

[0037] In some embodiments, the power supply module performing a soft start operation includes: the power supply module controlling the original switching frequency of the switching tube in the power supply module to increase to the initial switching frequency.

[0038] Among them, the initial switching frequency can be set by the user or the manufacturer of the power supply module. For example, if the original switching frequency of the switching tube is 80K and the initial switching frequency is 350K, then control the power supply module to increase from 80K to 350K.

[0039] In this embodiment, performing a soft start operation on the power supply module enables the power supply module to enter the normal working state after the soft start operation.

[0040] In other embodiments of the present application, after the soft start operation is completed, the power supply module can perform frequency limiting control on the initial switching frequency of the switching tube of the converter according to a preset frequency range.

[0041] In some embodiments, the power supply module performing frequency limiting control on the initial switching frequency of the switching tube of the converter includes: the power supply module adjusting the initial switching frequency so that the obtained limited frequency switching frequency after adjustment is within the preset frequency range.

[0042] In some embodiments, the preset frequency range can be set by itself, and the present application does not limit this. For example, the preset frequency range can be [295K, 310K].

[0043] In some embodiments, the power supply module can adjust the initial switching frequency to any value within the preset frequency range. For example, if the preset frequency range can be [295K, 310K] and the initial switching frequency is 350K, the power supply module can adjust the initial switching frequency of 350K to 300K.

[0044] In another embodiment, the power supply module can also set the preset frequency range as the jump range of the initial switching frequency, and the initial switching frequency can randomly jump within the preset frequency range, etc. For example, if the preset frequency range can be [295K, 310K] and the initial switching frequency is 350K, the power supply module can control the initial switching frequency to jump from 350K to any value within [295K, 310K].

[0045] In other ways of the present application, the power supply module can perform frequency limiting control on the initial switching frequency through other means. The above-listed frequency limiting control methods for the initial switching frequency are only examples and do not constitute a limitation on the frequency limiting control methods for the initial switching frequency.

[0046] In some embodiments of the present application, the step of performing frequency limiting control on the initial switching frequency of the switching tube of the converter is optional. The operations performed on the limited switching frequency obtained by the frequency limiting control are basically the same as the operations performed on the initial switching frequency in the following text. Therefore, the subsequent operations of the limited switching frequency will not be described repeatedly in this embodiment.

[0047] In this embodiment, after the soft start operation is completed, the initial switching frequency of the switching tube is relatively large. The larger the initial switching frequency, the less energy is supplied to the converter. Therefore, after the soft start operation is completed, the gain of the converter is very small. By performing frequency limiting control on the initial switching frequency, usually the initial switching frequency is adjusted to be smaller. Therefore, performing frequency limiting control on the initial switching frequency can increase the gain of the converter and make the gain of the converter reach the expected effect through a preset frequency range. If the limited switching frequency is adjusted to make the output voltage of the converter tend to be stable after the load changes, since the gain of the converter has reached the expected effect, the time for adjusting the adjusted limited switching frequency according to the loop operation result can be shortened to make the output voltage of the converter tend to be stable after the load changes. Thus, the response speed to the phenomenon of voltage drop or overshoot can be improved, and further the performance and reliability of the power supply module can be improved.

[0048] S12. If it is detected that the number of loads changes, calculate the voltage change amplitude of the converter in real time according to the working voltage of the converter after the soft start operation is completed.

[0049] In some embodiments, the power supply module determines the working voltage of the converter after the soft start operation is completed, and real-time detects the output voltage output by the output end of the converter. Then, the power supply module calculates the voltage change amplitude according to the detected output voltage and the working voltage. When the calculated voltage change amplitude is greater than or equal to a configured threshold, the power supply module determines that the number of loads has changed. Among them, the change in the number of loads includes an increase (for example, load addition) or a decrease (for example, load removal) in the number of loads within a short period of time. The short period of time can be 1 s, 1.5 s or a self-set time. Detecting the output voltage output by the converter can be real-time detection or detection according to a preset time interval, and the preset time interval can be set by itself, and the present application does not limit this. For example, the preset time interval can be 1 second or 0.5 second.

[0050] Among them, the working voltage is the voltage output when the converter is in a normal working state (usually after the soft-start operation is completed, the converter enters the normal working state). The voltage change range is the difference between the sampled voltage value of the output voltage of the converter detected in real time by the power supply module and the sampled voltage value of the working voltage after the converter outputs the working voltage. Since the voltage output by the converter is usually a waveform signal, it is necessary to sample the voltage output by the converter to obtain the sampled voltage value. When detecting the output voltage of the converter in real time, there can be multiple output voltages of the converter detected by the power supply module, so there are also multiple voltage change ranges. The configuration threshold can be set by itself, and this application does not limit it.

[0051] S13. Determine whether the voltage change range is greater than or equal to the first preset threshold.

[0052] In some embodiments of this application, when the voltage change range is greater than or equal to the first preset threshold, the change degree of the output voltage of the converter is large.

[0053] In this embodiment, the first preset threshold can be set by itself, and this application does not limit it. If the voltage change range is greater than or equal to the first preset threshold, execute step S14; or, if the voltage change range is less than the first preset threshold, execute step S17.

[0054] S14. Adjust the initial switching frequency of the switching tube of the converter at least once according to the second preset threshold and the preset frequency corresponding to the voltage change range to obtain the first switching frequency.

[0055] In some embodiments of this application, the second preset threshold is less than the first preset threshold, the second preset threshold can be set by itself, and this application does not limit it. The preset frequency corresponding to the voltage change range can be set by itself, and this application does not limit it. For example, the power supply module can obtain multiple preset voltage change ranges and multiple preset switching frequencies, establish the corresponding relationship between each preset voltage change range and a preset switching frequency, establish a corresponding relationship list according to the corresponding relationship, and then determine the preset switching frequency corresponding to the preset voltage change range with the same voltage change range in the corresponding relationship list as the preset frequency corresponding to the voltage change range.

[0056] In some embodiments of this application, the step of adjusting the initial switching frequency at least once to obtain the first switching frequency can refer to steps S131 to S135 in the following text.

[0057] In this embodiment, when the voltage change amplitude is greater than or equal to the first preset threshold, the initial switching frequency is first adjusted according to the preset frequency corresponding to the voltage change amplitude greater than or equal to the first preset threshold, so that the output voltage output by the converter will no longer continue to increase or will no longer continue to drop.

[0058] In addition, when the voltage change amplitude is greater than or equal to the first preset threshold, it is determined that the change degree of the output voltage of the converter is large. Since the frequency modulation range of the converter is usually very large and the loop regulation frequency calculated by the converter is usually very small, it means that the time for regulating using the loop regulation frequency is relatively long, resulting in the output voltage output at the output end of the converter being in a state of continuous drop or continuous overshoot (increase) for a long time. In this case, the present application directly adjusts the initial switching frequency according to the preset frequency corresponding to the voltage change amplitude. By the adjusted initial switching frequency, the energy at the output end of the converter can be quickly adjusted, so that the time for the output voltage output by the converter to be in a state of drop or overshoot (increase) can be shortened, and thus the overall regulation time of the switching frequency of the switching tube can be shortened.

[0059] S15. According to the loop operation result of the converter and the preset frequency range, adjust the first switching frequency at least once to obtain the second switching frequency.

[0060] In some embodiments of the present application, the loop operation result includes the loop regulation frequency, and the loop regulation frequency is the frequency value calculated by the converter. For example, the loop regulation frequency can be 320K. The loop operation result can be calculated according to parameters such as the output voltage and output current of the converter in related technologies. In addition, the loop operation result is related to the control loop of the converter, and different control loops calculate the loop operation result in different ways, so that different control loops have different loop operation results. The control loop of the converter includes, but is not limited to: the circuit of voltage single-loop control and the circuit of voltage loop + current loop competition control. For example, the circuit of voltage single-loop control can be a DC-DC circuit controlled by voltage single-loop control, and the circuit of voltage loop + current loop competition control can be a Boost boost circuit controlled by double-loop control.

[0061] In some embodiments of the present application, the step of adjusting the first switching frequency at least once to obtain the second switching frequency can refer to steps S141 to S146 in the following text.

[0062] S16. Perform frequency limit control on the second switching frequency according to the preset frequency range to control the output voltage of the converter to be within the preset range of the working voltage.

[0063] In some embodiments of the present application, the power supply module performs frequency limiting control on the second switching frequency according to a preset frequency range, including: the power supply module adjusts the second switching frequency so that the adjusted target switching frequency is within the preset frequency range.

[0064] In this embodiment, when the output voltage of the converter is within the preset range of the operating voltage, it means that the output voltage of the converter has tended to be stable. Among them, the preset range is a range including the operating voltage, and the preset range can be set by itself, and the present application does not limit this. For example, if the operating voltage is 3V, the preset range can be 2.9V - 3.1V.

[0065] S17, determine whether the voltage change amplitude is greater than the second preset threshold.

[0066] In some embodiments of the present application, when the voltage change amplitude is less than the first preset threshold and greater than the second preset threshold, the change degree of the output voltage of the converter is small.

[0067] In this embodiment, if the voltage change amplitude is less than the first preset threshold and greater than the second preset threshold, perform step S18; or, if the voltage change amplitude is less than or equal to the second preset threshold, perform step S19.

[0068] S18, adjust the initial switching frequency according to the loop operation result.

[0069] In some embodiments of the present application, if the voltage change amplitude is less than the first preset threshold and greater than the second preset threshold, it means that the change degree of the output voltage of the converter is small and the initial switching frequency is adjusted through the loop operation result, so that the time for the voltage output by the converter to tend to be stable after the load changes is short. In such a case, it can be considered not to use the preset frequency corresponding to the voltage change amplitude to adjust the initial switching frequency, but directly adjust the initial switching frequency through the loop operation result.

[0070] In the embodiment, when the power supply module determines that the change degree of the output voltage of the converter is small, the time for adjusting the frequency limiting frequency switch using the loop operation result is short, and the adjustment effect is relatively stable and reliable.

[0071] S19, perform frequency limiting control on the initial switching frequency according to the preset frequency range.

[0072] In some embodiments of the present application, if the voltage change amplitude is less than or equal to the second preset threshold, it means that the output voltage of the converter hardly changes after the number of loads changes (the output voltage of the converter is stable after the number of loads changes). At this time, performing frequency limiting control on the initial switching frequency according to the preset frequency range can make the voltage output by the converter more stable after the load changes.

[0073] In this embodiment, the relevant steps for limiting the frequency of the initial switching frequency can refer to step S11, so this embodiment will not be described repeatedly. If the output voltage of the converter has tended to be stable and the initial switching frequency of the switching tube is limited again, it can ensure that the gain of the converter reaches the expected effect.

[0074] For example, as Figure 3 shown, it is a comparison schematic diagram of the adjustment effect of the dynamic response optimization method provided by an embodiment of the present application. In Figure 3 , curve 1 (dashed line) is the voltage-time curve of the dynamic response optimization method in the present application, curve 2 (solid line) is the voltage-time curve of the related response method, and the magnitude relationship between the first preset threshold and the second preset threshold is as Figure 3 shown. Among them, the vertical axis represents the output voltage at the output end of the converter, and the horizontal axis represents time. U0 is the output voltage (operating voltage) of the converter in the normal operating state. 0 - t1 is the time period when the load does not change. After t1, the load powered by the converter increases (loads) within a short period of time. It can be seen from curve 1 that after adjusting the switching frequency of the converter using the dynamic response optimization method in the present application, the duration of the output voltage drop of the converter is t1 - t3, the minimum value of the output voltage drop of the converter is U1, and the time for the output voltage of the converter to tend to be stable is t5. It can be seen from curve 2 that after adjusting the switching frequency of the converter using the related response method, the duration of the output voltage drop of the converter is t1 - t4, the minimum value of the output voltage drop of the converter is U2, and the time for the output voltage of the converter to tend to be stable is t6. Among them, t3 is less than t4, U1 is greater than U2, t5 is less than t6, t2 - t4 is the time for adjusting the initial switching frequency through the preset frequency corresponding to the voltage change amplitude, t4 - t5 is the time for adjusting the first switching frequency through the loop operation result, and t5 - t6 is the time for limiting the frequency of the second switching frequency. After the converter tends to be stable and operates normally for a period of time (t6 - t7), after t7, the load powered by the converter decreases (unloads) within a short period of time. It can be seen from curve 1 that after adjusting the switching frequency of the converter using the dynamic response optimization method in the present application, the duration of the output voltage rise of the converter is t7 - t8, the maximum value of the output voltage rise of the converter is U3, and the time for the output voltage of the converter to tend to be stable is t 11 . It can be seen from curve 2 that after adjusting the switching frequency of the converter using the related response method, the duration of the output voltage rise of the converter is t7 - t9, the minimum value of the output voltage drop of the converter is U4, and the time for the output voltage of the converter to tend to be stable is t 12 . Among them, t8 is less than t9, U3 is less than U4, t11 Less than t 12 ,t8 - t 10 is the time for adjusting the initial switching frequency according to the preset frequency corresponding to the voltage change amplitude, t 10 - t 11 is the time for adjusting the first switching frequency according to the loop operation result, t 11 - t 12 is the time for limiting the frequency of the second switching frequency. From Figure 3 It can be seen that when the load increases or decreases within a short time, by using the dynamic response optimization method in this application to adjust the switching frequency of the converter, the time for the output voltage of the converter to be in a falling or overshoot (increase) state can be shortened, and the amplitude of the fall and the amplitude of the overshoot can be reduced, so that the overall adjustment time of the switching frequency of the switching tube can be shortened.

[0075] Through the above embodiments, if the voltage change amplitude is greater than or equal to the first preset threshold, it is determined that the amplitude of the output voltage drop or the amplitude of the overshoot of the converter after the load changes is large, and the initial switching frequency is directly adjusted according to the preset frequency corresponding to the voltage change amplitude, which can quickly adjust the energy at the output end of the converter, so that the time for the output voltage of the converter to be in a falling state or an overshoot state can be shortened, and further the output voltage of the converter can be adjusted in time, so that the output voltage of the converter tends to be stable (control the output voltage of the converter within the preset range of the working voltage).

[0076] In some embodiments of this application, as Figure 4 shown, is a flowchart of a method for calculating the voltage change amplitude provided by an embodiment of this application. Specifically, it includes the following steps: S121, detect the output voltage of the converter in real time after the number of loads changes.

[0077] In some embodiments, when performing a soft start operation on the power supply module, since the switching frequency of the switching tube in the converter will change, the output voltage of the converter will also change following the switching frequency. After the load changes (for example, the number of loads suddenly increases or decreases significantly within a short time, where the short time can be 1 second), there will be an instantaneous shortage or redundancy of energy at the output end of the converter, so that the output voltage of the converter after the load changes will show a falling or overshoot phenomenon, and this falling or overshoot phenomenon will last for a period of time.

[0078] In this embodiment, since the detection of the output voltage can be real-time, multiple real-time output voltages can be obtained.

[0079] S122. Sample the working voltage to obtain a first sampled voltage value, and sample the output voltage to obtain a second sampled voltage value.

[0080] In some embodiments, since the working voltage and the output voltage are usually continuous signal waveforms, it is necessary to sample the working voltage and the output voltage in order to obtain the corresponding sampled voltage values. Since the output voltage can be multiple real-time output voltages, it is necessary to sample each output voltage to obtain the second sampled voltage value corresponding to each real-time output voltage.

[0081] In some embodiments, the sampling frequency for sampling the working voltage and the output voltage can be set by oneself, and this application does not limit this.

[0082] S123. Calculate the voltage change amplitude in real time according to the first sampled voltage value and the second sampled voltage value.

[0083] In some embodiments, if the second sampled voltage value can be multiple, the power supply module can compare the first sampled voltage value with each second sampled voltage value to determine the larger and smaller values between the first sampled voltage value and each second sampled voltage value, and then the power supply module determines the difference between the larger value and the smaller value as the voltage change amplitude.

[0084] In some other embodiments, the voltage change amplitude can be multiple, and the power supply module can perform operations on the first sampled voltage value and each second sampled voltage value in other ways to obtain multiple voltage change amplitudes.

[0085] In an embodiment of this application, the power supply module adjusts the initial switching frequency of the switching tube of the converter according to the second preset threshold and the preset frequency corresponding to the voltage change amplitude to obtain a first switching frequency. As Figure 5 shown, it is a flowchart of a method for generating the first switching frequency provided by an embodiment of this application.

[0086] S131. Adjust the initial switching frequency according to the preset frequency corresponding to the voltage change amplitude.

[0087] In some embodiments, the power supply module can directly adjust the initial switching frequency to the preset frequency.

[0088] S132. Real-time detect the first updated voltage output by the converter at the adjusted initial switching frequency.

[0089] In some embodiments, since the adjustment of the initial switching frequency can be multiple times, and each adjustment of the initial switching frequency will cause a change in the output voltage of the converter. When adjusting the initial switching frequency multiple times, the power supply module performs real-time detection on the converter, so that multiple first updated voltages can be obtained.

[0090] S133. Calculate the updated voltage change amplitude based on the first updated voltage and the operating voltage.

[0091] In some embodiments, the updated voltage change amplitude can refer to steps S121 - S123 above, so this application will not repeat the description.

[0092] S134. Determine whether the updated voltage change amplitude is greater than or equal to the first preset threshold.

[0093] In some embodiments of this application, if the updated voltage change amplitude is greater than or equal to the first preset threshold, the process returns to step S131. Or, if the updated voltage change amplitude is less than the first preset threshold, execute step S135.

[0094] In this embodiment, that the updated voltage change amplitude is greater than or equal to the first preset threshold means that the change degree of the output voltage of the converter is still large at this time. At this time, it is not possible to make the output voltage of the converter tend to be stable in a short time through the adjustment of the loop operation result. Therefore, continuing to adjust the adjusted initial switching frequency according to the preset frequency corresponding to the voltage change amplitude can improve the adjustment speed and make the output voltage of the converter no longer increase or drop continuously after the load changes.

[0095] S135. Stop the adjustment and determine the adjusted initial switching frequency as the first switching frequency.

[0096] In this embodiment, if the updated voltage change amplitude is less than the first preset threshold, it means that the change degree of the output voltage of the converter is small at this time, and the adjustment of the first updated voltage through the preset frequency corresponding to the updated voltage change amplitude is stopped at this time. Among them, the determination method of the preset frequency corresponding to the updated voltage change amplitude is basically the same as the determination method of the preset frequency corresponding to the voltage change amplitude, so this application will not repeat the description.

[0097] In an embodiment of this application, the power supply module adjusts the first switching frequency at least once according to the loop operation result of the converter and the preset frequency range to obtain the second switching frequency. As Figure 6 shown, it is a flowchart of the method for generating the second switching frequency provided by an embodiment of this application.

[0098] S141. Obtain the loop regulation frequency output by the converter at the first switching frequency.

[0099] In some embodiments of the present application, after obtaining the first switching frequency, the power supply module performs a loop operation on the converter to obtain the loop regulation frequency output by the converter at the first switching frequency. The calculation process of the loop regulation frequency may refer to related technologies, and the present application does not limit this.

[0100] S142, determine whether the loop regulation frequency is greater than the upper limit value of the preset frequency range.

[0101] In some embodiments of the present application, the power supply module can compare the loop regulation frequency with the preset frequency range to determine whether the loop regulation frequency is greater than the upper limit value of the preset frequency range. For example, if the loop regulation frequency is 320K and the preset frequency range is [295K, 310K], then the upper limit value of the preset frequency range is 310K. Therefore, the loop regulation frequency 320K is greater than the upper limit value 310K of the preset frequency range.

[0102] In this embodiment, if the loop regulation frequency is greater than the upper limit value of the preset frequency range, execute step S143, or, if the loop regulation frequency is within the preset frequency range, execute step S146.

[0103] S143, adjust the first switching frequency according to the loop regulation frequency.

[0104] In some embodiments of the present application, the power supply module can directly adjust the first switching frequency to the loop regulation frequency, where the number of adjustments can be one or more. For example, if the loop regulation frequency can be 320K and the first switching frequency is 400K, then during the initial adjustment, the first switching frequency 400K can be first adjusted to 380K, then 380K can be adjusted to 350K, and finally 350K can be adjusted to 320K.

[0105] In this embodiment, since both the adjustment amplitude through the loop operation result and the adjustment through the frequency limiting control are smaller than the adjustment amplitude through the preset frequency, when the updated voltage change amplitude corresponding to the first switching frequency is less than the first preset threshold, the change degree of the output voltage of the converter is smaller. Therefore, at this time, the loop operation result or the frequency limiting control can be selected to adjust the first switching frequency. If the loop regulation frequency is greater than the upper limit value of the preset frequency range, it means that the adjustment amplitude through the loop operation result is greater than the adjustment amplitude through the frequency limiting control. Therefore, selecting to adjust through the loop operation result between the loop operation result and the frequency limiting control can make the output voltage of the converter tend to be stable in a short time after the load changes.

[0106] S144, obtain the second updated voltage and the updated loop regulation frequency output by the converter at the adjusted first switching frequency, and calculate the current voltage change amplitude according to the second updated voltage and the working voltage.

[0107] In some embodiments of the present application, after obtaining the adjusted first switching frequency each time, the power supply module can perform a loop calculation on the converter to obtain an updated loop regulation frequency output by the converter at each adjusted first switching frequency. Therefore, if the first switching frequency is adjusted multiple times, multiple updated loop regulation frequencies can be obtained.

[0108] S145, determine whether the current voltage change amplitude is greater than a second preset threshold and whether the updated loop regulation frequency is greater than the upper limit of the preset frequency range.

[0109] In some embodiments of the present application, if the current voltage change amplitude is greater than the second preset threshold and the updated loop regulation frequency is greater than the upper limit of the preset frequency range, the process returns to step S143. Or, if the current voltage change amplitude is less than or equal to the second preset threshold, or the updated loop regulation frequency is within the preset frequency range, step S146 is executed.

[0110] S146, stop the adjustment and determine the adjusted first switching frequency as the second switching frequency.

[0111] In this embodiment, when the current voltage change amplitude is less than or equal to the second preset threshold, or the updated loop regulation frequency is within the preset frequency range, it means that the change degree of the output voltage of the converter is extremely small at this time or the output voltage of the converter has tended to be stable. Stopping the adjustment using the loop regulation frequency at this time can save computing resources.

[0112] As Figure 7 shown, it is a functional module diagram of a dynamic response optimization device provided by an embodiment of the present application. The dynamic response optimization device 103 includes an execution unit 1031, a calculation unit 1032, an adjustment unit 1033, and a control unit 1034. The module / unit referred to in the present application means a series of computer-readable instruction segments that can be obtained by the control circuit 102 Figure 9 and can complete fixed functions. In this embodiment, the functions of each module / unit will be described in detail in subsequent embodiments.

[0113] The execution unit 1031 is configured to perform a soft start operation in response to a received instruction; The calculation unit 1032 is configured to, if it detects that the number of loads changes, calculate the voltage change amplitude of the converter in real time according to the working voltage of the converter after the soft start operation is completed; The adjustment unit 1033 is configured to, if the voltage change amplitude is greater than or equal to a first preset threshold, adjust the initial switching frequency of the switching tube of the converter at least once according to the second preset threshold and the preset frequency corresponding to the voltage change amplitude to obtain the first switching frequency; The adjustment unit 1033 is further configured to adjust the first switching frequency at least once according to the loop operation result of the converter and a preset frequency range to obtain a second switching frequency; The control unit 1034 is configured to perform frequency limiting control on the second switching frequency according to the preset frequency range to control the output voltage of the converter to be within a preset range of the operating voltage.

[0114] As Figure 8 shown, it is a schematic structural diagram of a power supply module provided by an embodiment of the present application.

[0115] In an embodiment of the present application, the power supply module 10 includes, but is not limited to, a converter 101 and a control circuit 102. Among them, the converter 101 includes a switching tube, and the switching tube can be a MOSFET tube, or other devices that can be used as a switching tube, such as a triode or a diode. The control circuit 102 is configured to monitor and adjust parameters such as the output voltage, output current, and temperature of the power supply module to ensure that parameters such as the output voltage and output current meet specific requirements and standards. For example, the control circuit 102 can adjust the converter 101 through the switching tube to make the power supply module stably output voltage or output current.

[0116] Those skilled in the art can understand that the schematic diagram is only an example of the power supply module 10, and does not constitute a limitation on the power supply module 10. It may include more or fewer components than those shown in the figure, or combine certain components, or different components. For example, the power supply module 10 may further include input / output devices, network access devices, buses, etc.

[0117] As Figure 9 shown, it is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

[0118] In an embodiment of the present application, the electronic device 1 includes, but is not limited to, a power supply module 10, a storage device 11, a processing device 12, and a computer program stored in the storage device 11 and executable on the processing device 12, such as a dynamic response optimization program.

[0119] In an embodiment of the present application, the electronic device 1 is a device capable of automatically performing numerical calculations and / or information processing according to pre-set or stored computer-readable instructions. Its hardware includes, but is not limited to, a microprocessor, an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), a digital signal processor (DSP), an embedded device, etc.

[0120] An electronic device can be any kind of electronic product that can perform human-computer interaction with a user. For example, communication devices, radio frequency devices, and radio devices, etc. Among them, communication devices include, but are not limited to: personal computers, tablet computers, smart phones, game consoles, and Internet Protocol Television (IPTV), etc. Radio frequency devices include, but are not limited to: radio transmitters, radio receivers, radio frequency amplifiers, radio frequency filters, and radio frequency antennas, etc. Radio devices include, but are not limited to: radio radios, radio televisions, radio remote controls, and radio measuring instruments, etc.

[0121] The electronic device 1 may include a network device and / or a user device. Among them, the network device includes, but is not limited to, a single network electronic device, a group of electronic devices composed of multiple network electronic devices, or a cloud composed of a large number of hosts or network electronic devices based on Cloud Computing. This application does not limit the electronic device.

[0122] The network where the electronic device 1 is located includes, but is not limited to: the Internet, wide area network, metropolitan area network, local area network, Virtual Private Network (VPN), etc.

[0123] Those skilled in the art can understand that the schematic diagram is only an example of the electronic device 1, and does not constitute a limitation on the electronic device 1. It may include more or fewer components than shown in the figure, or combine some components, or different components. For example, the electronic device 1 may also include input / output devices, network access devices, buses, etc.

[0124] The power supply module 10 can be an internal power supply in the electronic device 1. The power supply module 10 is used to convert the input voltage into an output voltage to supply power to the load in the electronic device 1 (for example, the controller in the electronic device 1) or the load connected to the electronic device 1.

[0125] The processing device 12 can be a Central Processing Unit (CPU), or it can also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The processing device 12 is the computing core and control center of the electronic device 1, connecting all parts of the entire electronic device 1 through various interfaces and lines, and obtaining the operating system of the electronic device 1 and various installed application programs, program codes, etc. For example, the processing device can be Figure 8 the control circuit 102 of the power supply module 10 in

[0126] The processing device 12 obtains the operating system of the electronic device 1 and various installed application programs. The processing device 12 obtains the application programs to implement the steps in the above embodiments of various dynamic response optimization methods, such as Figure 2 , Figure 4 , Figure 5 and Figure 6 .

[0127] Exemplarily, the computer program can be divided into one or more modules / units, and the one or more modules / units are stored in the storage device 11 and obtained by the processing device 12 to complete this application. The one or more modules / units can be a series of computer program instruction segments capable of performing specific functions, and these instruction segments are used to describe the obtaining process of the computer program in the electronic device 1.

[0128] The storage device 11 can be used to store the computer programs and / or modules. By running or obtaining the computer programs and / or modules stored in the storage device 11, and calling the data stored in the storage device 11, the processing device 12 realizes various functions of the electronic device 1. The storage device 11 mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the electronic device 1. In addition, the storage device 11 can include non-volatile memories, such as hard disks, memories, plug-in hard disks, smart media cards (SMCs), secure digital (SD) cards, flash cards, at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices.

[0129] The storage device 11 can be an external memory and / or an internal memory of the electronic device 1. Further, the storage device 11 can be a memory in a physical form, such as a memory stick, a TF card (Trans-flash Card), etc.

[0130] If the modules / units integrated in the electronic device 1 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above method embodiments of this application, it can also be completed by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium. When the computer program is obtained by a processor, the steps of the above method embodiments can be realized.

[0131] Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, an accessible file, or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disc, a computer memory, a read-only memory (ROM, Read-Only Memory).

[0132] Combined with Figure 2, the storage device 11 in the electronic device 1 stores a plurality of instructions to implement a dynamic response optimization method, and the processing device 12 can obtain the plurality of instructions to implement: in response to the received instruction, perform a soft-start operation; if it is detected that the number of loads changes, calculate the voltage change amplitude of the converter in real time according to the working voltage of the converter after the soft-start operation is completed; if the voltage change amplitude is greater than or equal to a first preset threshold, adjust the initial switching frequency of the switching tube of the converter at least once according to a second preset threshold and a preset frequency corresponding to the voltage change amplitude to obtain a first switching frequency; adjust the first switching frequency at least once according to the loop operation result of the converter and a preset frequency range to obtain a second switching frequency; perform frequency limiting control on the second switching frequency according to the preset frequency range to control the output voltage of the converter to be within a preset range of the working voltage. Specifically, the specific implementation method of the processing device 12 for the above instructions can refer to Figure 2 the description of the relevant steps in the corresponding embodiment, which will not be elaborated here.

[0133] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation.

[0134] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0135] In addition, each functional module in various embodiments of the present application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware, or in the form of a hardware plus a software functional module.

[0136] Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed in the present application. Any associated drawing marks in the claims should not be regarded as limiting the claimed rights.

[0137] In addition, it is obvious that the term "comprising" does not exclude other units or steps, and the singular does not exclude the plural. A plurality of units or devices described in this application can also be implemented by one unit or device through software or hardware. Terms such as first, second, etc. are used to denote names and do not denote any particular order.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A dynamic response optimization method, applied to a power module, characterized in that: The power module is connected to a load, the power module includes a converter, and the method includes: In response to the received instruction, performing a slow start operation; If it is detected that the number of the loads changes, the voltage change amplitude of the converter is calculated in real time according to the working voltage of the converter after the slow-start operation is completed; If the voltage variation amplitude is greater than or equal to a first preset threshold, the initial switching frequency of the switch tube of the converter is adjusted at least once according to a second preset threshold and a preset frequency corresponding to the voltage variation amplitude to obtain a first switching frequency; According to the loop operation result of the converter and the preset frequency range, adjusting the first switching frequency at least once to obtain a second switching frequency; The second switching frequency is frequency-limited according to the preset frequency range, so as to control the output voltage of the converter to be within the preset range of the working voltage.

2. The dynamic response optimization method according to claim 1, characterized in that: The step of calculating the voltage variation amplitude of the converter in real time according to the working voltage of the converter after the slow-start operation is completed comprises: detecting in real time the output voltage of the converter after the number of the loads changes; Sampling the operating voltage to obtain a first sampled voltage value, and sampling the output voltage to obtain a second sampled voltage value; The voltage variation amplitude is calculated in real time according to the first sampled voltage value and the second sampled voltage value.

3. The dynamic response optimization method according to claim 2, characterized in that: The second sampled voltage value is multiple, and the real-time calculation of the voltage change amplitude according to the first sampled voltage value and the second sampled voltage value includes: The larger and smaller of the first sampled voltage value and each second sampled voltage value are determined, and the difference between the larger and the smaller is determined as the voltage variation amplitude.

4. The dynamic response optimization method according to claim 1, characterized in that: Any of the at least one adjustment of the initial switching frequency includes: adjusting the initial switching frequency according to a preset frequency corresponding to the voltage variation amplitude; detecting in real time a first updated voltage output by the converter at the adjusted initial switching frequency, and calculating an updated voltage variation amplitude according to the first updated voltage and the operating voltage; If the updated voltage variation amplitude is greater than or equal to the first preset threshold, adjusting the adjusted initial switching frequency for the next time according to the preset frequency corresponding to the updated voltage variation amplitude; or If the updated voltage variation amplitude is smaller than the first preset threshold, the adjustment is stopped, and the adjusted initial switching frequency is determined as the first switching frequency.

5. The dynamic response optimization method according to claim 1, characterized in that: The loop operation result includes a loop adjustment frequency, and any one of the at least one adjustments performed on the first switching frequency includes: Acquiring a loop regulation frequency output by the converter at the first switching frequency; If the loop adjustment frequency is greater than an upper limit value of the preset frequency range, adjusting the first switching frequency according to the loop adjustment frequency; Obtaining a second updated voltage output by the converter at the adjusted first switching frequency and an updated loop adjustment frequency, and calculating a current voltage change amplitude according to the second updated voltage and the operating voltage; If the current voltage variation amplitude is greater than the second preset threshold, the adjusted first switching frequency is adjusted for the next time according to the preset frequency corresponding to the current voltage variation amplitude; or If the current voltage variation amplitude is less than or equal to the second preset threshold, or the loop regulation frequency is within the preset frequency range, regulation is stopped, and the adjusted first switching frequency is determined as the second switching frequency.

6. The dynamic response optimization method according to claim 1, characterized in that: The second preset threshold is less than the first preset threshold, and the method further includes: If the voltage variation amplitude is greater than the second preset threshold and less than the first preset threshold, adjusting the initial switching frequency according to the loop operation result; or If the voltage variation amplitude is less than or equal to the second preset threshold, the initial switching frequency is frequency limited according to the preset frequency range.

7. The dynamic response optimization method according to claim 1, characterized in that: The performing frequency limiting control on the second switching frequency according to the preset frequency range comprises: The second switching frequency is adjusted so that the adjusted target switching frequency is within the preset frequency range.

8. A dynamic response optimization device, running on a power module, characterized in that: The power module is connected to a load, the power module includes a converter, and the device includes: An execution unit, configured to execute a suspend operation in response to a received instruction; a calculation unit, configured to calculate in real time a voltage change amplitude of the converter according to the working voltage of the converter after the slow-start operation is completed if a change in the number of the loads is detected; an adjusting unit, configured to adjust the initial switching frequency of the switch tube of the converter at least once according to a second preset threshold and a preset frequency corresponding to the voltage variation amplitude to obtain a first switching frequency if the voltage variation amplitude is greater than or equal to a first preset threshold; The adjustment unit is further used to adjust the first switching frequency at least once according to the loop operation result of the converter and the preset frequency range to obtain a second switching frequency; A control unit is used to perform frequency limiting control on the second switching frequency according to the preset frequency range, so as to control the output voltage of the converter to be within the preset range of the working voltage.

9. A power module, characterized in that: The power module is connected to the load, and the power module includes a converter and a control circuit. The converter is used to convert the input voltage into an output voltage to power the load, and the control circuit is used to implement the dynamic response optimization method as described in any one of claims 1-7.

10. An electronic device, characterized in that: The electronic device comprises a storage device, a processing device, a load and a power module as claimed in claim 9; The storage device stores at least one instruction; and The processing device executes the at least one instruction to implement the dynamic response optimization method according to any one of claims 1-7.

Images