Boost power supply device, power amplification device, signal processing system, power supply control method, and electronic apparatus

Abstract

The embodiment of the invention provides a boost power supply device, a power amplification device, a signal processing system, a power supply control method and electronic equipment. The boost power supply device comprises: a boost power supply unit for supplying power to a power amplifier according to boost power supply parameters, the boost power supply parameters at least comprising a power supply output voltage and a switching clock frequency; and the monitoring unit is electrically connected with the boosting power supply unit, detects the current amplitude of an input signal of the power amplifier, and dynamically adjusts a boosting power supply parameter corresponding to the current amplitude according to the power supply output voltage and the positive correlation between the switching clock frequency and the current amplitude. And the adjusted boost power supply parameters are provided for the boost power supply unit.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of electrical and electronic technology, and in particular to a boost power supply device, a power amplification device, a signal processing system, a power supply control method, and an electronic device. Background Art

[0002] In order to increase the output power of a power amplifier, a boost power supply circuit such as a DC conversion circuit is often used to boost the power input voltage from a power supply before supplying power to the power amplifier.

[0003] For a power amplifier powered by a power supply battery, when the amplitude of the input signal is large, the peak current drawn by the power amplifier from the power supply battery will be limited, resulting in insufficient driving capability of the power amplifier; in addition, when the amplitude of the input signal is small, the driving capability provided by the power amplifier is large enough relative to the driving capability required by the input signal, and the excess driving capability will only cause unnecessary power loss, and the power efficiency of the boost power supply circuit is poor. Therefore, it is impossible to take into account both the power efficiency and driving capability of the boost power supply circuit. Summary of the invention

[0004] In view of this, embodiments of the present invention provide a boost power supply device, a power amplification device, a signal processing system, a power supply control method, and an electronic device to solve the above problems.

[0005] According to a first aspect of an embodiment of the present invention, a boost power supply device is provided, comprising: a boost power supply unit, which supplies power to a power amplifier according to boost power supply parameters, wherein the boost power supply parameters include at least a power supply output voltage and a switching clock frequency; a monitoring unit, which is electrically connected to the boost power supply unit, and the monitoring unit detects a current amplitude of an input signal of the power amplifier, and dynamically adjusts a boost power supply parameter corresponding to the current amplitude according to a positive correlation between the power supply output voltage and the switching clock frequency and the current amplitude, and provides the adjusted boost power supply parameter to the boost power supply unit.

[0006] In another implementation of the present invention, the monitoring unit is specifically used to: obtain a first preset correspondence relationship and a second preset correspondence relationship, the first preset correspondence relationship indicating a positive correlation mapping between the amplitude of the input signal and the power supply output voltage, and the second preset correspondence relationship indicating a positive correlation mapping between the amplitude of the input signal and the switching clock frequency; determine the power supply output voltage having the first preset correspondence relationship with the current amplitude, and determine the switching clock frequency having the second preset correspondence relationship with the current amplitude.

[0007] In another implementation of the present invention, in the first preset corresponding relationship, the change of the power supply output voltage with the amplitude of the input signal in the first upper amplitude range is smaller than the change of the power supply output voltage with the amplitude of the input signal in the first middle amplitude range, and the change of the power supply output voltage with the amplitude of the input signal in the first lower amplitude range is smaller than the change of the power supply output voltage with the amplitude of the input signal in the first middle amplitude range; wherein the first middle amplitude range is between the first upper amplitude range and the first lower amplitude range.

[0008] In another implementation of the present invention, in the second preset corresponding relationship, the change of the switching clock frequency with the amplitude of the input signal in the second upper amplitude range is smaller than the change of the switching clock frequency with the amplitude of the input signal in the second middle amplitude range, and the change of the switching clock frequency with the amplitude of the input signal in the second lower amplitude range is smaller than the change of the switching clock frequency with the amplitude of the input signal in the second middle amplitude range; wherein the second middle amplitude range is between the second upper amplitude range and the second lower amplitude range.

[0009] In another implementation of the present invention, the boost power supply unit is specifically used to: use a switching clock frequency that has the second preset corresponding relationship with the current amplitude to control the switching device in the boost power supply unit, so that the ripple range of the power supply output voltage whose current amplitude has the first preset corresponding relationship is smaller than a preset threshold range.

[0010] In another implementation of the present invention, the boost power supply unit is specifically used to: determine a dynamic duty cycle based on a dynamic boost ratio of the power supply output voltage to a preset input voltage, and control a switching device in the boost power supply unit to perform a switching operation according to the dynamic duty cycle.

[0011] In another implementation of the present invention, the monitoring unit is specifically used to: perform peak detection on the input signal, perform smoothing filtering on the detection amplitude of the peak detection, and obtain the current amplitude of the input signal.

[0012] According to a second aspect of an embodiment of the present invention, there is provided a power amplification device, comprising: a power amplifier, amplifying an input signal to obtain an output signal; and a boost power supply device according to the first aspect.

[0013] [AW20240007ICN1][HS2410798CCN]

[0014] In another implementation of the present invention, the power amplification device also includes: a digital-to-analog conversion unit, which is connected between the power amplifier and the monitoring unit, and the digital-to-analog conversion unit is used to obtain the input signal from the monitoring unit, output the input signal to the digital-to-analog conversion unit, so that the analog signal corresponding to the input signal is input into the power amplifier.

[0015] According to a third aspect of an embodiment of the present invention, a signal processing system is provided, comprising: a signal processing device; a speaker; and a power amplifying device according to the second aspect, wherein the power amplifier is connected between the signal processing device and the speaker.

[0016] According to a fourth aspect of an embodiment of the present invention, a power supply control method is provided, comprising: detecting a current amplitude of an input signal of a power amplifier; dynamically adjusting a boost power supply parameter corresponding to the current amplitude based on a positive correlation between the power supply output voltage and the switching clock frequency and the current amplitude; and providing the adjusted boost power supply parameter to a boost power supply unit of the power amplifier.

[0017] According to the fifth aspect of an embodiment of the present invention, there is provided an electronic device, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; the memory is used to store at least one executable instruction, and the executable instruction enables the processor to execute the method described in the fourth aspect.

[0018] According to a sixth aspect of an embodiment of the present invention, there is provided a computer storage medium on which a computer program is stored. When the program is executed by a processor, the method described in the fourth aspect is implemented.

[0019] According to a seventh aspect of an embodiment of the present invention, there is provided a computer program product, comprising computer instructions, which, when executed by a processor, implement the method as described in the fourth aspect.

[0020] In the scheme of the embodiment of the present invention, the power supply output voltage and the switching clock frequency are positively correlated with the current amplitude. As the current amplitude of the input signal increases, the switching clock frequency increases, and the ripple of the power supply output voltage decreases, thereby improving the driving capability of the power amplifier and avoiding improving the driving capability only by increasing the power supply output voltage. In other words, the driving capability is improved by maintaining a smaller power supply output voltage, thereby ensuring the power efficiency of the boost power supply device. In addition, as the current amplitude of the input signal decreases, the driving capability of the power supply output voltage is often sufficient, and the switching clock frequency can be reduced. Therefore, the power efficiency and driving capability of the boost power supply circuit are taken into account.

[0021] [AW20240007ICN1][HS2410798CCN] BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 FIG. 1 is a schematic block diagram of a signal processing system 100 applicable to some embodiments of the present invention.

[0024] Figure 2 It is a schematic structural block diagram of a boost power supply device according to some embodiments of the present invention.

[0025] Figure 3A for Figure 2 Schematic block diagram of the structure of a signal processing system 100 applicable to an embodiment of the present invention.

[0026] Figure 3B for Figure 3A Schematic structural block diagram of the monitoring unit.

[0027] Figure 4A and Figure 4B They are Figure 2 A schematic diagram of a preset corresponding relationship of an embodiment.

[0028] Figure 5 Schematic structural block diagram of power amplification devices according to other embodiments of the present invention.

[0029] Figure 6 The present invention is a flowchart of the steps of the power supply control method according to some other embodiments of the present invention.

[0030] Figure 7 Schematic diagram of the structure of electronic devices according to other embodiments of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in the field based on the embodiments in the embodiments of the present invention should fall within the scope of protection of the embodiments of the present invention.

[0032] The specific implementation of the embodiment of the present invention is further described below in conjunction with the accompanying drawings of the embodiment of the present invention.

[0033] Figure 1 The signal processing system 100 to which some embodiments of the present invention are applicable is shown. The signal processing system 100 includes a signal processing device 110, a power amplifier 120, and a speaker 130. The signal processing system 100 can be configured in an electronic device, specifically, the electronic device can be a portable device such as a mobile phone, an MP3 player, an iPod, etc. carrying the signal processing system 100.

[0034] For example, the signal processing device 110 can monitor a voltage signal such as a song signal, perform signal processing according to the monitored signal voltage signal, and output the processed signal to the power amplifier 120. The signal processing device 110 can be configured as a digital signal processor (DSP).

[0035] [AW20240007ICN1][HS2410798CCN]Processor, DSP), application processor (Application Processor, AP) and other processors, or can be configured as digital circuits such as FPGA or ASIC.

[0036] The power amplifier 120 amplifies the signal amplitude based on the power amplification gain to obtain an output signal, and inputs the output signal to the speaker 130. Furthermore, the speaker 130 converts the electrical energy of the output signal into mechanical energy through its own coil and diaphragm based on the principle of electromagnetic induction, so that it can be heard by human ears.

[0037] The boost power supply circuit 140 obtains a power supply output voltage after a boost conversion from the power supply input voltage and provides it to the power amplifier 120 (for example, the output stage circuit). The driving capability of the boost power supply circuit 140 is positively correlated with the dynamic current of the boost power supply circuit 140 when it is working. For a signal of a certain size, an excessive driving capability will not be used to drive the signal, but will lead to a larger dynamic current, which will only cause power loss of the boost power supply circuit 140. Therefore, providing different driving capabilities according to the size of different signals can effectively avoid power loss. Therefore, the number of switching times can be reduced by reducing the switching clock frequency of the boost power supply circuit, reducing the total dynamic current of switches of the same size under the same working time, thereby increasing the power efficiency of the boost power supply circuit.

[0038] When the amplitude of the input signal is large, the peak current drawn by the power amplifier from the power supply battery will be limited, resulting in insufficient driving capability of the power amplifier; in addition, when the amplitude of the input signal is small, the driving capability provided by the power amplifier is large enough relative to the driving capability required by the input signal, and the excess driving capability will only cause unnecessary power loss, and the power efficiency of the boost power supply circuit is poor. Therefore, it is impossible to take into account both the power efficiency and driving capability of the boost power supply circuit. The various embodiments of the present invention provide a series of solutions that can take into account both the power efficiency and driving capability of the boost power supply circuit.

[0039] The following will be combined Figure 2 The structural block diagram of the boost power supply device of some embodiments of the present invention is described below. Specifically, Figure 2 The boost power supply device 200 includes a boost power supply unit 210 and a monitoring unit 220, and the boost power supply unit 210 and the monitoring unit 220 are electrically connected.

[0040] Specifically, the boost power supply unit 210 supplies power to the power amplifier 120 according to the boost power supply parameters. The boost power supply parameters at least include the power supply output voltage and the switching clock frequency.

[0041] It should be understood that the boost power supply unit can be implemented as a DC conversion circuit (i.e., a DC-DC circuit) such as a boost circuit, in which a switching device such as a transistor or a MOS tube is provided, and the boost operation of the boost power supply unit is performed through the switching operation of each switching device. Boost power supply parameters

[0042] [AW20240007ICN1][HS2410798CCN] includes but is not limited to: power supply input voltage, power supply output voltage, switching clock frequency, power supply output current, power efficiency, ripple voltage, load regulation rate, linear regulation rate, etc.

[0043] Specifically, the power supply input voltage indicates the voltage range received by the power supply circuit, which affects the adaptability and stability of the power supply. The power supply output current indicates the current capability that the power supply circuit can provide. For a power amplifier, sufficient output current is a necessary condition to ensure its normal operation. Power efficiency is used to describe the energy conversion efficiency in the power conversion process. High efficiency means less energy is lost in the form of heat. Ripple voltage indicates the AC component in the output voltage. Low ripple voltage helps improve the output quality and stability of the power supply. The switching clock frequency is used to adjust the switching frequency to optimize the ripple voltage and reduce electromagnetic interference (EMI). Load regulation is used to describe the stability of the output voltage of the power supply when the load changes. Good load regulation means that the output voltage remains stable even if the load changes.

[0044] Linear regulation is used to describe the stability of the output voltage when the input voltage of the power supply changes. Good linear regulation means that the output voltage fluctuates less when the input voltage changes.

[0045] In addition, the monitoring unit 220 detects the current amplitude of the input signal of the power amplifier 120, dynamically adjusts the boost power supply parameters corresponding to the current amplitude based on the positive correlation between the power supply output voltage and the switching clock frequency and the current amplitude, and provides the adjusted boost power supply parameters to the boost power supply unit.

[0046] Generally speaking, when the power supply output voltage increases and the switching clock frequency decreases, or when the power supply output voltage decreases and the switching clock frequency increases, the driving capability of the power amplifier powered by the boost power supply circuit (i.e., the load capacity of the power amplifier) ​​may increase or decrease, depending on the variation range of the power supply output voltage and the increase range of the switching clock frequency. When both the power supply output voltage and the switching clock frequency are positively correlated with the current amplitude, it is beneficial to the necessary driving capability of the power amplifier for the current amplitude of the input signal. In other words, the power consumption of the boost power supply device is reduced, and the power efficiency of the boost power supply device is guaranteed.

[0047] In the solution of the embodiment of the present invention, the power supply output voltage and the switching clock frequency are both positively correlated with the current amplitude. As the current amplitude of the input signal increases, the switching clock frequency increases, and the ripple of the power supply output voltage decreases, thereby improving the driving capability of the power amplifier and avoiding improving the driving capability only by increasing the power supply output voltage. In other words, the driving capability is improved by maintaining a relatively small power supply output voltage, thereby ensuring the power efficiency of the boost power supply device. In addition, as the current amplitude of the input signal decreases, the switching clock frequency increases, and the ripple of the power supply output voltage decreases.

[0048] [AW20240007ICN1][HS2410798CCN] is small, and the driving capability of the power supply output voltage is often sufficient, which can reduce the switching clock frequency. Therefore, the power efficiency and driving capability of the boost power supply circuit are taken into account.

[0049] In some embodiments, Figure 3A As shown, the input signal of the power amplifier 120 may come from the digital signal of the signal processing device 110, and the monitoring unit 220 monitors and controls the input signal. The boost power supply unit 210 may be an example of the boost power supply circuit 140, which is used to power the power amplifier 120. In the case where the boost power supply device 200 includes a digital-to-analog conversion unit 230, the digital signal of the signal processing device 110 may be transmitted to the digital-to-analog conversion unit 230 through the monitoring unit 220, and the digital signal is converted into an analog signal by the digital-to-analog conversion unit 230 and provided to the power amplifier 120.

[0050] Specifically, in a further embodiment, Figure 3B As shown, the monitoring unit 220 includes a peak detection module 221, a smoothing filter module 222 and a parameter adjustment module 223. The monitoring unit 220 can receive an input signal in real time, and perform peak detection on the input signal through the peak detection module 221 to obtain a peak signal Ap. For example, the current amplitude of the signal sample can be recorded, and the amplitude record is updated whenever the amplitude of the subsequent sample is greater than the amplitude recorded previously. For example, once an amplitude peak is detected, a trigger or latch can be used to hold the peak until the next larger peak amplitude appears. If a larger peak does not appear within a certain period of time, the peak signal amplitude stored in the latch should be reduced to a suitable value (for example, the current amplitude of the input signal).

[0051] The peak signal Ap can be input to the smoothing filter module 222 to obtain the smoothed signal Aps. The smoothing filter module 222 includes but is not limited to the following filters: Moving Average Filter: Calculates the moving average of signal samples; Exponentially Weighted Moving Average Filter: Gives higher weights to recent samples; Median Filter: Uses the median of signal samples to reduce the impact of outliers; Low-Pass Filter: Allows low-frequency signal components to pass through and suppresses high-frequency noise above the cutoff frequency.

[0052] According to the characteristics of the input signal and the required smoothness, the appropriate filter type and parameters, such as the filter window size or time constant, are selected. During the continuous sampling of the input signal, the peak detection and filtering steps can be repeated to update the current amplitude of the input signal in real time, and the filtered amplitude is output as the current amplitude of the input signal.

[0053] The smoothed signal Aps is input to the parameter adjustment module 223 in the monitoring unit 220. The parameter adjustment module 223 stores a first preset corresponding relationship (for example, function f1(Aps)) and a second preset corresponding relationship.

[0054] [AW20240007ICN1][HS2410798CCN] system (for example, function f2(Aps)). Specifically, the smoothed signal Aps is converted by the function f1(Aps) to obtain the power supply output voltage TargetPvdd. In addition, the smoothed signal Aps can also be converted by the function f2(Aps) to obtain the switching clock frequency TargetFreq of the power supply circuit 340. Without loss of generality, the monitoring unit 220 is specifically used to perform peak detection on the input signal, and perform smoothing and filtering on the detection amplitude of the peak detection to obtain the current amplitude of the input signal.

[0055] The peak detection 221, smoothing filter module 222, and parameter adjustment module 223 in the monitoring unit 220 can be implemented through software programming, for example, using hardware platforms such as DSP (digital signal processor) or FPGA (field programmable gate array) to accelerate processing.

[0056] It should be understood that the above-mentioned determination method of the power supply output voltage TargetPvdd and the switching clock frequency TargetFreq is only exemplary, and the present invention is not limited thereto. Other processing may also be used to obtain the power supply output voltage TargetPvdd and the switching clock frequency TargetFreq.

[0057] Further, the power amplifier 120 may include at least one stage of amplification circuit and an output stage circuit. The boost power supply unit 210 may include a control circuit, a clock circuit and a power supply. In order to meet the output power requirements of the power amplifier, the boost power supply circuit is usually required to have sufficient driving capability, and the switching clock frequency of the boost power supply circuit is relatively high, which leads to large switching losses of the boost power supply circuit and reduced power efficiency. If the power efficiency of the boost power supply circuit is optimized at different loads formed by different input signal amplitudes, the switching clock frequency of the boost power supply circuit is usually adjusted according to the load conditions. When the driving capability is not required to be high at light load, the switching clock frequency is reduced to save power consumption. As the load of the boost power supply circuit increases, the switching clock frequency is gradually increased to achieve reasonable power consumption distribution. The ripple amplitude of the power supply output voltage TargetPvdd of the boost power supply circuit under the same load current is inversely correlated with the frequency TargetFreq of the switching clock of the boost power supply circuit. The higher the switching clock frequency, the smaller the output ripple of the boost power supply circuit, so a higher load can be provided.

[0058] In some other embodiments, the monitoring unit is specifically used to: obtain a first preset corresponding relationship and a second preset corresponding relationship, and then determine a power supply output voltage having a first preset corresponding relationship with the current amplitude, and determine a switching clock frequency having a second preset corresponding relationship with the current amplitude. It should be understood that the first preset corresponding relationship indicates a positive correlation mapping between the amplitude of the input signal and the power supply output voltage, and the second preset corresponding relationship indicates a positive correlation mapping between the amplitude of the input signal and the switching clock frequency.

[0059] For example, the first preset correspondence relationship can be stored in a digital circuit, or can be implemented using an analog circuit such as a voltage divider circuit. For example, the first preset relationship can be implemented as a piecewise function based on the amplitude range of the input signal to improve the processing efficiency of the monitoring unit. For example, in the first preset correspondence relationship, the first amplitude middle interval is between the first amplitude upper limit interval and the first amplitude lower limit interval, and the first amplitude upper limit interval, the first amplitude middle interval and the first amplitude lower limit interval can form a continuous interval. It should be understood that the first amplitude upper limit interval is an interval close to the upper amplitude limit of the input signal in the first preset correspondence relationship, the first amplitude lower limit interval is an interval close to the lower amplitude limit of the input signal in the first preset correspondence relationship, and the first amplitude middle interval is an interval between the first amplitude upper limit interval and the first amplitude lower limit interval.

[0060] Accordingly, the variation of the power supply output voltage with the amplitude of the input signal in the first upper amplitude range is smaller than the variation of the power supply output voltage with the amplitude of the input signal in the first middle amplitude range. The variation of the power supply output voltage with the amplitude of the input signal in the first lower amplitude range is smaller than the variation of the power supply output voltage with the amplitude of the input signal in the first middle amplitude range.

[0061] That is to say, the change rate of the power supply output voltage about the amplitude in the first amplitude upper limit interval and the change rate of the power supply output voltage about the amplitude in the first amplitude lower limit interval are both greater than the change rate of the power supply output voltage about the amplitude in the first amplitude middle interval.

[0062] More specifically, when the current amplitude is in the first amplitude lower limit interval of the first preset corresponding relationship, the monitoring unit determines the power supply output voltage corresponding to the amplitude lower limit of the first amplitude middle interval as the power supply output voltage of the boost power supply unit. When the current amplitude is in the first amplitude upper limit interval of the first preset corresponding relationship, the monitoring unit determines the power supply output voltage corresponding to the amplitude upper limit of the first amplitude middle interval as the power supply output voltage of the boost power supply unit.

[0063] More specifically, if Figure 4AAs shown, A1 is the lower limit of the amplitude of the first amplitude intermediate interval, and A2 is the upper limit of the amplitude of the first amplitude intermediate interval. The function f1(Aps) realizes the mapping of the smoothed signal Aps to the power supply output voltage TargetPvdd. That is, when the input amplitude of the input smoothed signal is relatively small (for example, x < A1), the power supply output voltage TargetPvdd remains roughly unchanged. In addition, when the input amplitude of the smoothed signal increases (for example, A1 < x < A2), it can be realized by linear fitting: the power supply output voltage TargetPvdd = K1 * Aps + B1, where K1 and B1 are constants.

[0064] In addition, when the input amplitude of the smoothed signal further increases (for example, x > A2), the power supply output voltage TargetPvdd reaches the peak and remains roughly unchanged.

[0065] [AW20240007ICN1][HS2410798CCN]

[0066] For another example, the second preset correspondence can be stored in a digital circuit or implemented by an analog circuit such as a voltage dividing circuit. For example, the second preset relationship can be implemented as a piecewise function based on the amplitude interval of the input signal to improve the processing efficiency of the monitoring unit. For example, in the second preset correspondence, the second amplitude intermediate interval is between the second amplitude upper limit interval and the second amplitude lower limit interval, and the second amplitude upper limit interval, the second amplitude intermediate interval, and the second amplitude lower limit interval can form a continuous interval. It should be understood that the second amplitude upper limit interval is the interval close to the upper limit of the amplitude of the input signal in the second preset correspondence, the second amplitude lower limit interval is the interval close to the lower limit of the amplitude of the input signal in the second preset correspondence, and the second amplitude intermediate interval is the interval between the second amplitude upper limit interval and the second amplitude lower limit interval.

[0067] Correspondingly, the change rate of the switching clock frequency with respect to the amplitude in the second amplitude upper limit interval is less than the change rate of the switching clock frequency with respect to the amplitude in the second amplitude intermediate interval, and the change rate of the switching clock frequency with respect to the amplitude in the second amplitude lower limit interval is less than the change rate of the switching clock frequency with respect to the amplitude in the second amplitude intermediate interval.

[0068] That is to say, the change rate of the switching clock frequency with respect to the amplitude in the second amplitude upper limit interval and the change rate of the switching clock frequency with respect to the amplitude in the second amplitude lower limit interval are both greater than the change rate of the switching clock frequency with respect to the amplitude in the second amplitude intermediate interval.

[0069] More specifically, when the current amplitude is in the middle interval of the second amplitude in the second preset correspondence, the monitoring unit determines the switching clock frequency corresponding to the lower limit of the amplitude in the middle interval of the second amplitude as the switching clock frequency of the boost power supply unit. When the current amplitude is in the middle interval of the second amplitude in the second preset correspondence, the monitoring unit determines the switching clock frequency corresponding to the upper limit of the amplitude in the middle interval of the second amplitude as the switching clock frequency of the boost power supply unit.

[0070] More specifically, as Figure 4B shown, A3 is the lower limit of the amplitude in the middle interval of the second amplitude, and A4 is the upper limit of the amplitude in the middle interval of the second amplitude. The function f2(Aps) realizes the mapping of the smooth signal Aps to the switching clock frequency TargetFreq. That is, when the input amplitude of the smooth signal is relatively small (for example, x < A3), the switching clock frequency TargetFreq remains roughly unchanged. In addition, when the input amplitude of the smooth signal increases (for example, A3 < x < A4), linear fitting can be used to achieve: switching clock frequency TargetFreq = K2 * Aps + B2, where K2 and B2 are constants. In addition, when the input amplitude of the smooth signal further increases (for example, x > A2), the switching clock frequency TargetFreq reaches the peak,

[0071] [AW20240007ICN1][HS2410798CCN]and remains roughly unchanged.

[0072] In some other examples, the boost power supply unit 210 is used to supply power to the power amplifier 120. Specifically, the boost power supply unit 210 controls the switching device in the boost power supply unit with a switching clock frequency having a second preset correspondence with the current amplitude, so that the ripple range of the power supply output voltage having a first preset correspondence with the current amplitude is less than the preset threshold range. It should be understood that providing the boost power supply parameters including the power supply output voltage and the switching clock frequency to the boost power supply unit reuses the control process of the boost power supply unit and improves the power supply reliability of the boost power supply unit.

[0073] More specifically, the boost power supply unit 210 determines the dynamic duty cycle according to the dynamic boost ratio of the power supply output voltage and the preset input voltage, and determines the switching moment of the switching device in the boost power supply unit according to the product of the dynamic duty cycle and the switching clock frequency. It should be understood that the switching operation in the boost power supply unit is performed according to the current duty cycle, and the dynamic duty cycle is determined by the boost power supply parameters including the power supply output voltage and the switching clock frequency, so as to more accurately obtain the switching moment of the switching device in the boost power supply unit, thereby reliably controlling the switching device.

[0074] Specifically, the power supply output voltage PVDD and the preset input voltage VDD have the following relationship: PVDD=VDD / (1-D), where D is the dynamic duty cycle. In the period T corresponding to the switching clock frequency, the control signal of the switching device is at a high level for a time period of T*D, and the control signal is at a low level for a time period of T*(1-D).

[0075] Figure 5 Schematic structural block diagram of power amplification devices according to other embodiments of the present invention. Figure 5 The power amplifier device 500 includes a power amplifier 120 and a boost power supply device 200. The power amplifier 120 amplifies an input signal to obtain an output signal.

[0076] In some embodiments, the power amplification device 500 may further include a digital-to-analog conversion unit 230. The digital-to-analog conversion unit 230 is connected between the power amplifier 120 and the monitoring unit 220, and the digital-to-analog conversion unit 230 is used to obtain an input signal from the monitoring unit 220, output the input signal to the digital-to-analog conversion unit 230, and input an analog signal corresponding to the input signal to the power amplifier 120.

[0077] The following will be combined Figure 6 The power supply control methods according to other embodiments of the present invention are described. Figure 6 The power supply control method can be performed by a monitoring unit, for example. Specifically, the power supply control method includes:

[0078] S610: Detect the current amplitude of the input signal of the power amplifier.

[0079] S620: According to the positive correlation between the power supply output voltage and the switching clock frequency and the current amplitude,

[0080] [AW20240007ICN1][HS2410798CCN]Dynamically adjust the boost power supply parameters corresponding to the current amplitude.

[0081] S630: Providing the adjusted boost power supply parameter to the boost power supply unit of the power amplifier.

[0082] In the scheme of the embodiment of the present invention, the power supply output voltage and the switching clock frequency are positively correlated with the current amplitude. As the current amplitude of the input signal increases, the switching clock frequency increases, and the ripple of the power supply output voltage decreases, thereby improving the driving capability of the power amplifier and avoiding improving the driving capability only by increasing the power supply output voltage. In other words, the driving capability is improved by maintaining a smaller power supply output voltage, thereby ensuring the power efficiency of the boost power supply device. In addition, as the current amplitude of the input signal decreases, the driving capability of the power supply output voltage is often sufficient, and the switching clock frequency can be reduced. Therefore, the power efficiency and driving capability of the boost power supply circuit are taken into account.

[0083] In other embodiments, according to the change of the current amplitude, the boost power supply parameters corresponding to the current amplitude are dynamically adjusted, including: obtaining a first preset correspondence and a second preset correspondence, the first preset correspondence indicating a positive correlation mapping between the amplitude of the input signal and the power supply output voltage, and the second preset correspondence indicating a positive correlation mapping between the amplitude of the input signal and the switching clock frequency; determining the power supply output voltage having the first preset correspondence with the current amplitude, and determining the switching clock frequency having the second preset correspondence with the current amplitude.

[0084] In other embodiments, in the first preset corresponding relationship, the variation of the power supply output voltage with the amplitude of the input signal in the first upper amplitude range is smaller than the variation of the power supply output voltage with the amplitude of the input signal in the first middle amplitude range, and the variation of the power supply output voltage with the amplitude of the input signal in the first lower amplitude range is smaller than the variation of the power supply output voltage with the amplitude of the input signal in the first middle amplitude range; wherein the first middle amplitude range is between the first upper amplitude range and the first lower amplitude range.

[0085] In other embodiments, in the second preset corresponding relationship, the change of the switching clock frequency with the amplitude of the input signal in the second upper amplitude range is smaller than the change of the switching clock frequency with the amplitude of the input signal in the second middle amplitude range, and the change of the switching clock frequency with the amplitude of the input signal in the second lower amplitude range is smaller than the change of the switching clock frequency with the amplitude of the input signal in the second middle amplitude range; wherein the second middle amplitude range is between the second upper amplitude range and the second lower amplitude range.

[0086] In other embodiments, the power supply control method further includes: using a switching clock frequency having the second preset corresponding relationship with the current amplitude to control the switching device in the boost power supply unit, so that the ripple range of the power supply output voltage having the first preset corresponding relationship with the current amplitude is smaller than a preset threshold range.

[0087] In other embodiments, a switching clock frequency having the second preset corresponding relationship with the current amplitude is used to control the switching device in the boost power supply unit, including: determining a dynamic duty cycle according to the dynamic boost ratio of the power supply output voltage to the preset input voltage, and determining the switching moment of the switching device in the boost power supply unit according to the product of the dynamic duty cycle and the switching clock frequency.

[0088] In other embodiments, detecting the current amplitude of the input signal of the power amplifier includes: performing peak detection on the input signal, and performing smoothing filtering on the detected amplitude of the peak detection to obtain the current amplitude of the input signal.

[0089] In some other embodiments, the power supply control method further includes: acquiring the input signal from the monitoring unit, outputting the input signal to a digital-to-analog conversion unit, and inputting an analog signal corresponding to the input signal into the power amplifier.

[0090] It should be understood that the specific implementation of each step in the power supply control method can refer to the corresponding description of each unit in the above-mentioned boost power supply device, and has corresponding beneficial effects, which will not be repeated here. Technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, the specific working process of each step in the power supply control method can refer to the corresponding process description of each unit in the above-mentioned boost power supply device, which will not be repeated here.

[0091] Reference Figure 7 , shows a schematic structural diagram of an electronic device according to another embodiment of the present invention. The specific embodiment of the present invention does not limit the specific implementation of the electronic device.

[0092] like Figure 7 As shown, the electronic device may include: a processor (processor) 702 for executing a program 710 , a communication interface (Communications Interface) 704 , a memory (memory) 706 , and a communication bus 708 .

[0093] The processor, the communication interface, and the memory communicate with each other via a communication bus.

[0094] Communication interface, used to communicate with other electronic devices or servers.

[0095] The processor is used to execute the program, and specifically can execute the relevant steps in the above method embodiment.

[0096] Specifically, the program may include program codes including computer operation instructions.

[0097] The processor may be a CPU or an Application Specific Integrated Circuit (ASIC).

[0098] [AW20240007ICN1][HS2410798CCN]Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention. The one or more processors included in the smart device may be processors of the same type, such as one or more CPUs; or may be processors of different types, such as one or more CPUs and one or more ASICs.

[0099] The memory is used to store programs. The memory may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory.

[0100] The program may include multiple computer instructions. Specifically, the program may enable a processor to execute each power supply control method described in any one of the aforementioned method embodiments through the multiple computer instructions.

[0101] The specific implementation of each step in the program can refer to the corresponding description of the corresponding steps, modules or units in the above method embodiments, and has corresponding beneficial effects, which will not be repeated here. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described device, equipment or module can refer to the corresponding process description in the above method embodiments, which will not be repeated here.

[0102] The embodiment of the present invention further provides a computer storage medium on which a computer program is stored, and when the program is executed by a processor, the method described in any of the above-mentioned multiple method embodiments is implemented. The computer storage medium includes, but is not limited to: a compact disc read-only memory (CD-ROM), a random access memory (RAM), a floppy disk, a hard disk or a magneto-optical disk, etc.

[0103] An embodiment of the present invention further provides a computer program product, including computer instructions, which instruct a computing device to execute the power supply control method in the above-mentioned multiple method embodiments.

[0104] In addition, it should be noted that the user-related information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to sample data used to train the model, data used for analysis, stored data, displayed data, etc.) involved in the embodiments of the present invention are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data need to comply with relevant regulations and standards, and corresponding operation entrances are provided for users to choose to authorize or refuse.

[0105] It should be noted that, according to the needs of implementation, each component / step described in the embodiment of the present invention can be divided into more components / steps, or two or more components / steps or parts of components / steps can be combined.

[0106] [AW20240007ICN1][HS2410798CCN] are combined into new components / steps to achieve the purpose of the embodiments of the present invention.

[0107] The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as software or computer code that can be stored in a recording medium (such as a CD-ROM, RAM, floppy disk, hard disk or magneto-optical disk), or implemented as a computer code originally stored in a remote recording medium or a non-temporary machine-readable medium downloaded through a network and to be stored in a local recording medium, so that the method described herein can be stored in such software processing on a recording medium using a general-purpose computer, a dedicated processor or programmable or dedicated hardware (such as an application-specific integrated circuit (ASIC) or a field programmable gate array (FPGA)). It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component (e.g., a random access memory (RAM), a read-only memory (ROM), a flash memory, etc.) that can store or receive software or computer code, and when the software or computer code is accessed and executed by a computer, a processor or hardware, the method described herein is implemented. In addition, when a general-purpose computer accesses the code for implementing the method shown here, the execution of the code converts the general-purpose computer into a dedicated computer for executing the method shown here.

[0108] Those of ordinary skill in the art will appreciate that the units and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present invention.

[0109] The above implementation methods are only used to illustrate the embodiments of the present invention, and are not limitations of the embodiments of the present invention. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the embodiments of the present invention. The patent protection scope of the embodiments of the present invention should be defined by the claims.

Claims

1. A boost power supply device, characterized in that: include: A boost power supply unit, which supplies power to the power amplifier according to boost power supply parameters, wherein the boost power supply parameters at least include a power supply output voltage and a switching clock frequency; A monitoring unit is electrically connected to the boost power supply unit, and the monitoring unit detects the current amplitude of the input signal of the power amplifier, and dynamically adjusts the boost power supply parameters corresponding to the current amplitude according to the positive correlation between the power supply output voltage and the switching clock frequency and the current amplitude, and provides the adjusted boost power supply parameters to the boost power supply unit.

2. The boost power supply device according to claim 1, characterized in that: The monitoring unit is specifically used to: obtain a first preset corresponding relationship and a second preset corresponding relationship, wherein the first preset corresponding relationship indicates a positive correlation mapping between the amplitude of the input signal and the power supply output voltage, and the second preset corresponding relationship indicates a positive correlation mapping between the amplitude of the input signal and the switching clock frequency; A power supply output voltage having the first preset corresponding relationship with the current amplitude is determined, and a switching clock frequency having the second preset corresponding relationship with the current amplitude is determined.

3. The boost power supply device according to claim 2, characterized in that: In the first preset corresponding relationship, the change of the power supply output voltage with the amplitude of the input signal in the first amplitude upper limit interval is smaller than the change of the power supply output voltage with the amplitude of the input signal in the first amplitude middle interval, The variation of the power supply output voltage with the amplitude of the input signal within the first amplitude lower limit interval is smaller than the variation of the power supply output voltage with the amplitude of the input signal within the first amplitude middle interval; The first amplitude middle interval is between the first amplitude upper limit interval and the first amplitude lower limit interval.

4. The boost power supply device according to claim 2, characterized in that: In the second preset corresponding relationship, the change of the switching clock frequency with the amplitude of the input signal in the second upper amplitude range is smaller than the change of the switching clock frequency with the amplitude of the input signal in the second middle amplitude range. The change of the switching clock frequency with the amplitude of the input signal in the second lower amplitude range is smaller than the change of the switching clock frequency with the amplitude of the input signal in the second middle amplitude range; The second amplitude middle interval is between the second amplitude upper limit interval and the second amplitude lower limit interval.

5. The boost power supply device according to claim 2, characterized in that: The boost power supply unit is specifically used to: use the switching clock frequency having the second preset corresponding relationship with the current amplitude to control the switching device in the boost power supply unit, so that the ripple range of the power supply output voltage whose current amplitude has the first preset corresponding relationship is smaller than the preset threshold range.

6. The boost power supply device according to claim 5, characterized in that: The boost power supply unit is specifically used to: determine a dynamic duty cycle based on a dynamic boost ratio of the power supply output voltage to a preset input voltage, and determine a switching moment of a switching device in the boost power supply unit based on the product of the dynamic duty cycle and the switching clock frequency.

7. The boost power supply device according to claim 1, characterized in that: The monitoring unit is specifically used for: performing peak detection on the input signal, performing smoothing filtering on the detection amplitude of the peak detection, and obtaining the current amplitude of the input signal.

8. A power amplifier device, characterized in that: include: A power amplifier amplifies the input signal to obtain an output signal; A boost power supply device according to any one of claims 1 to 7.

9. The power amplifier device according to claim 8, characterized in that: The power amplification device also includes: a digital-to-analog conversion unit, which is connected between the power amplifier and the monitoring unit, and is used to obtain the input signal from the monitoring unit, output the input signal to the digital-to-analog conversion unit, so that the analog signal corresponding to the input signal is input into the power amplifier.

10. A signal processing system, characterized in that: include: Signal processing device; speaker; According to the power amplification device according to claim 8 or 9, the power amplifier is connected between the [AW20240007ICN1][HS2410798CCN] signal processing device and the speaker.

11. A power supply control method, characterized in that: include: detecting a current amplitude of an input signal of the power amplifier; Dynamically adjusting the boost power supply parameters corresponding to the current amplitude according to the positive correlation between the power supply output voltage and the switch clock frequency and the current amplitude; The adjusted boost power supply parameter is provided to the boost power supply unit of the power amplifier.

12. An electronic device, characterized in that: include: A processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; The memory is used to store at least one executable instruction, and the executable instruction enables the processor to execute the method according to claim 11.

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