Power supply adjusting circuit and electronic equipment

Abstract

The utility model discloses a power supply adjusting circuit and electronic equipment, and the power supply adjusting circuit comprises a voltage conversion circuit which receives a power supply input signal, and obtains a common reference signal through the power supply input signal; the starting enabling circuit is used for receiving the switch enabling signal and the public reference signal so as to change the switch state under the action of the switch enabling signal, and a driving power supply signal is obtained by utilizing the public reference signal; the driving control circuit is used for receiving the common reference signal and the driving power supply signal so as to generate a driving control signal by utilizing a voltage difference value between the driving power supply signal and the common reference signal; the power switch sub-circuit is used for receiving and responding to the driving control signal to change the switch state so as to adjust the power supply input signal into the power supply output signal. By means of the mode, the power supply adjusting circuit adapts to the power supply input signal of the input voltage in a wide range, and is low in manufacturing cost, simple in circuit structure, small in size, simple in time sequence control and high in reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply, in particular to a power supply regulating circuit and electronic equipment. BACKGROUND

[0002] Nowadays, with the upgrading and wide application of battery technology, auxiliary power supply and energy storage devices are becoming more and more known to consumers and markets, and are being applied more and more. In the application layer, the requirements of auxiliary power supply design scheme are more and more simple and efficient. Considering the cost, more and more manufacturers consider the BUCK (step-down conversion) auxiliary power supply design scheme.

[0003] However, the BUCK auxiliary power supply design scheme in the related art cannot select the BUCK IC (integrated circuit) scheme when encountering a wide range of input conditions, usually greater than 100V. It has great disadvantages in terms of manufacturing cost, device loss, circuit layout, circuit complexity, timing control complexity, etc. CONTENT OF THE INVENTION

[0004] The technical problem solved by the present application is to provide a power supply regulating circuit and electronic equipment, which can solve the problem that the power supply regulating circuit in the prior art cannot select the BUCK IC scheme when encountering a wide range of input conditions, usually greater than 100V, and has great disadvantages in terms of manufacturing cost, device loss, circuit layout, circuit complexity, timing control complexity, etc.

[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide a power supply regulating circuit, wherein the power supply regulating circuit comprises: a voltage conversion circuit, configured to be coupled with a power supply circuit, and configured to receive a power supply input signal sent by the power supply circuit to obtain a common reference signal by using the power supply input signal; a start enable circuit, coupled with the voltage conversion circuit, and configured to receive a switch enable signal and the common reference signal sent by the voltage conversion circuit to change a switch state under the action of the switch enable signal and obtain a driving power supply signal by using the common reference signal; and a driving control circuit, coupled with the voltage conversion circuit and the start enable circuit, and configured to receive the common reference signal sent by the voltage conversion circuit and the driving power supply signal sent by the start enable circuit to generate a driving control signal by using the voltage difference between the driving power supply signal and the common reference signal; wherein the voltage conversion circuit is further configured to receive the driving control signal sent by the driving control circuit to change the switch state under the action of the driving control signal, so as to regulate the power supply input signal into a power supply output signal.

[0006] The voltage conversion circuit further comprises a power switch sub-circuit, an energy storage sub-circuit, a first feedback sub-circuit and a second feedback sub-circuit. The power switch sub-circuit is coupled to the energy storage sub-circuit and the drive control circuit, and is used to be coupled to the power supply circuit. The first feedback sub-circuit is coupled to the power switch sub-circuit, the energy storage sub-circuit, the second feedback sub-circuit, the start enable circuit and the drive control circuit. The second feedback sub-circuit is coupled to the energy storage sub-circuit and the drive control circuit. The first feedback sub-circuit is configured to obtain a first feedback signal in the power switch sub-circuit, and obtain a common reference signal by using the first feedback signal. The second feedback sub-circuit is configured to obtain a second feedback signal in the energy storage sub-circuit. The drive control circuit is further used to receive the first feedback signal sent by the first feedback sub-circuit and the second feedback signal sent by the second feedback sub-circuit, so as to generate a drive control signal by using a voltage difference, a first comparison result between the first feedback signal and a first voltage threshold, and a second comparison result between the second feedback signal and a second voltage threshold. The power switch sub-circuit is configured to receive a power supply input signal sent by the power supply circuit and a drive control signal sent by the drive control circuit, so as to change a switching state under the action of the drive control signal, and cooperate with the energy storage sub-circuit to adjust the power supply input signal into a power supply output signal.

[0007] The voltage conversion circuit further comprises a freewheeling sub-switching circuit. The freewheeling sub-switching circuit is coupled to the first feedback sub-circuit, the second feedback sub-circuit and the energy storage sub-circuit. The freewheeling sub-switching circuit is configured to cooperate with the energy storage sub-circuit to adjust the first feedback signal and the second feedback signal.

[0008] The voltage conversion circuit further comprises a voltage stabilizing sub-circuit. The voltage stabilizing sub-circuit is coupled to the energy storage sub-circuit and the second feedback sub-circuit, and is used to be coupled to the back-end functional circuit. The voltage stabilizing sub-circuit is configured to receive an energy storage output signal of the energy storage sub-circuit, to obtain a power supply output signal by using the energy storage output signal, and to provide the power supply output signal to the back-end functional circuit. The start enable circuit is further used to receive the common reference signal sent by the first feedback sub-circuit and the power supply output signal sent by the voltage stabilizing sub-circuit, to obtain a drive power signal by using the common reference signal and the power supply output signal.

[0009] The voltage stabilizing sub-circuit comprises a first voltage stabilizing diode, a voltage stabilizing resistor and a second voltage stabilizing diode. A first end of the first voltage stabilizing diode is coupled to the energy storage sub-circuit. A second end of the first voltage stabilizing diode is coupled to a first end of the voltage stabilizing resistor and a first end of the second voltage stabilizing diode. A second end of the voltage stabilizing resistor is coupled to the second feedback sub-circuit and the drive control circuit. A second end of the second voltage stabilizing diode is used to be coupled to the back-end functional circuit.

[0010] The driving control circuit further comprises a control sub-circuit and a soft start sub-circuit, the control sub-circuit is coupled with the soft start sub-circuit, the first feedback sub-circuit, the second feedback sub-circuit, the energy storage sub-circuit, the start enable circuit and the power switch sub-circuit; the control sub-circuit is configured to receive the common reference signal and the first feedback signal sent by the first feedback sub-circuit, the second feedback signal sent by the second feedback sub-circuit and the driving power signal sent by the start enable circuit, to generate the driving control signal by using the voltage difference, the first comparison result and the second comparison result; the soft start sub-circuit is configured to receive the common reference signal sent by the first feedback sub-circuit, to adjust the driving control signal by using the common reference signal.

[0011] The driving control circuit further comprises a shock wave sub-circuit, the shock wave sub-circuit is coupled with the first feedback sub-circuit and the control sub-circuit; the shock wave sub-circuit is configured to receive the first feedback signal sent by the first feedback sub-circuit, to enhance the voltage amplitude of the first feedback signal, so that the control sub-circuit obtains the first comparison result by comparing the first feedback signal with the first voltage threshold after the voltage is enhanced.

[0012] The start enable circuit comprises a first switch sub-circuit, a second switch sub-circuit and a third switch sub-circuit, the first switch sub-circuit is coupled with the second switch sub-circuit and the third switch sub-circuit, and is used for being coupled with the power supply circuit and the signal processing circuit, the second switch sub-circuit is coupled with the power switch sub-circuit, the first feedback sub-circuit and the third switch sub-circuit, and the third switch sub-circuit is coupled with the voltage stabilizing sub-circuit and the driving control circuit; the first switch sub-circuit is configured to receive the direct current input signal sent by the power supply circuit and the switch enable signal sent by the signal processing circuit, to change the switch state under the action of the switch enable signal by using the direct current input signal, to obtain the first switch signal; the second switch sub-circuit is configured to receive the first switch signal sent by the first switch sub-circuit, the power supply input signal sent by the power switch sub-circuit and the common reference signal sent by the first feedback sub-circuit, to change the switch state to obtain the second switch signal in response to the first switch signal, the power supply input signal and the common reference signal; the third switch sub-circuit is configured to receive the first switch signal sent by the first switch sub-circuit, the second switch signal sent by the second switch sub-circuit and the power supply output signal sent by the voltage stabilizing sub-circuit, to change the switch state to obtain the driving power signal in response to the first switch signal, the second switch signal and the power supply output signal.

[0013] The power switch sub-circuit includes a power switch tube, the energy storage sub-circuit includes an energy storage inductor, the first feedback sub-circuit includes a first resistor, the second feedback sub-circuit includes a second resistor, the freewheeling sub-switch circuit includes a freewheeling switch tube, the second end of the power switch tube is used for coupling the power supply circuit, the third end of the power switch tube is used for coupling the first end of the first resistor and the third end of the drive control circuit, the second end of the first resistor is coupled with the first end of the energy storage inductor, the first end of the second resistor, the second end of the freewheeling switch tube, the first end of the start enable circuit and the fifth end of the drive control circuit, the second end of the energy storage inductor is coupled with the first end of the freewheeling switch tube and grounded, the second end of the second resistor is coupled with the second end of the drive control circuit, and the first end of the power switch tube is coupled with the sixth end of the drive control circuit.

[0014] To solve the above technical problems, the application adopts another technical scheme: providing an electronic device, wherein the electronic device includes a shell and a power supply regulating circuit connected to the shell; wherein the power supply regulating circuit is the power supply regulating circuit as described in any of the above.

[0015] The application has the following beneficial effects: Different from the prior art, the voltage conversion circuit in the power supply regulating circuit provided by the application is configured to receive a power supply input signal sent by a power supply circuit to obtain a common reference signal using the power supply input signal; the start enable circuit is configured to receive a switch enable signal and the common reference signal to obtain a drive power signal using the common reference signal in response to the switch enable signal; the drive control circuit is configured to receive the common reference signal and the drive power signal to generate a drive control signal using the voltage difference between the drive power signal and the common reference signal; and the power switch sub-circuit is used to receive and change the switching state in response to the drive control signal, thereby adjusting the power supply input signal to a power supply output signal, so that when a wide range of input conditions, i.e., the voltage of the power supply input signal is relatively large, especially greater than 100V, the voltage difference between the corresponding drive power signal and the common reference signal can still be maintained in a relatively small voltage range, thereby maintaining the normal operation of the drive control circuit by means of the voltage difference in the relatively small voltage range, to avoid the situation that the voltage of the corresponding drive power signal is too large to be directly used as the working power source by the drive control circuit when the voltage of the power supply input signal is relatively large; and the circuit elements additionally added in the auxiliary circuit designed using the flyback topology to adapt to the wide range of input conditions can be effectively simplified, thereby effectively reducing the manufacturing cost and device loss of the circuit, and having great advantages in terms of layout, circuit complexity, timing control complexity, etc., and effectively improving the adaptability, stability and economy of the product. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description only show some of the embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0017] Figure 1 is a structural schematic diagram of a first embodiment of a power supply regulating circuit of the present application;

[0018] Figure 2 is a structural schematic diagram of a second embodiment of a power supply regulating circuit of the present application;

[0019] Figure 3 is a structural schematic diagram of a third embodiment of a power supply regulating circuit of the present application;

[0020] Figure 4 is a structural schematic diagram of an embodiment of an electronic device of the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the scope of protection of the present application.

[0022] The terms "first", "second", "third" in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only for explaining the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include other steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0023] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0024] The application will be described in detail below with reference to the accompanying drawings and embodiments.

[0025] Please refer to Figure 1 , Figure 1 is a structural schematic diagram of a first embodiment of a power supply regulating circuit of the application. In the embodiment, the power supply regulating circuit 10 comprises a voltage conversion circuit 11, a start-up enabling circuit 12, and a drive control circuit 13.

[0026] In the application, the power supply regulating circuit 10 is specifically applied to electronic devices with voltage regulating and conversion requirements, such as photovoltaic charging devices, wind power devices, energy storage devices, etc., to receive input of an external power supply and perform voltage conversion on the power supply input, thereby meeting the requirements of any reasonable signal functions such as charging and energy storage. Of course, in other embodiments, the power supply regulating circuit 10 can also be specifically provided in servers, communication devices, and other any reasonable electronic devices, and the embodiment does not limit this.

[0027] Specifically, the voltage conversion circuit 11 is used to realize physical and electrical connection with an external power supply circuit 101 to receive a direct current signal and / or an alternating current signal with constant current and / or voltage provided by the power supply circuit 101, i.e., a power supply input signal, and perform voltage regulation and conversion on the power supply input signal under the action of a drive control signal by using the internal switching action mechanism of the voltage conversion circuit 11, such as the opening and closing action mechanism of switching devices such as IGBT (Insulated Gate Bipolar Transistor), high-frequency transistor, MOS (Metal Oxide Semiconductor Field Effect Transistor), etc., and obtain a common reference signal by using the power supply input signal.

[0028] It is worth mentioning that the power supply circuit 101 can specifically include a battery with a direct current output, a direct current stabilizer, a photovoltaic power supply, an energy storage power supply, can also include a power grid power supply, an independent generator, and any reasonable alternating current power supply, and can also be a power supply adjustment circuit 10 that receives and converts and adjusts photovoltaic power supply, wind power generation, power grid power supply, independent generator, or any other reasonable upper power supply to obtain direct current and / or alternating current power supply output; and the power supply circuit 101 can specifically provide one or more power supply input signals, and the actual application scene determines, and the embodiment does not limit this.

[0029] In addition, "coupling" in this paper refers to including any direct and indirect connection means. Therefore, if the first circuit is coupled to the second circuit in the text, it means that the first circuit can be directly connected to the second circuit through electrical connection or wireless transmission, optical transmission, or indirectly connected to the second circuit through other circuits or connection means.

[0030] The start enable circuit 12 is coupled to the voltage conversion circuit 11 and is used to receive an externally input switch enable signal and a corresponding public reference signal sent by the voltage conversion circuit 11, to change the switch state under the action of the switch enable signal, to adjust the public reference signal, so as to adjust the level state of the output signal of the start enable circuit 12, that is, the driving power signal, in response to the switch enable signal and the public reference signal.

[0031] It is worth mentioning that the switch enable signal can be understood as a start signal corresponding to the upper signal processing circuit or the upper computer of the power supply adjustment circuit 10 for driving the power supply adjustment circuit 10 to perform corresponding power adjustment; the driving power signal can be understood as a power supply signal supporting the working operation of the driving control circuit 13, so that when the start enable circuit 12 receives the switch enable signal, it can correspondingly power the driving control circuit 13 to start working operation.

[0032] Further, the driving control circuit 13 is coupled to the voltage conversion circuit 11 and the start enable circuit 12, and is used to receive the public reference signal sent by the voltage conversion circuit 11 and the driving power signal sent by the start enable circuit 12, to generate a driving control signal by utilizing the voltage difference between the driving power signal and the public reference signal, such as starting to work when the voltage difference is greater than or equal to a set voltage threshold.

[0033] It is worth mentioning that the drive control circuit 13 can be specifically understood as a functional circuit for realizing on-off control of the internal switch tube of the voltage conversion circuit 11; the drive power signal and the common reference signal can be understood as positive and negative power supply signals provided to the power supply end and the grounding end of the drive control circuit 13 to drive it to normally work; and the common reference signal actually corresponds to the negative power supply signal provided to the grounding end of the drive control circuit 13.

[0034] In general, the grounding end of the drive control circuit 13 and each grounding end in the power supply regulating circuit 10 are grounded and have zero potential; the power supply end of the drive control circuit 13 actually receives the drive power signal obtained by using the power input signal, so the voltage range of the power input signal will directly affect the voltage range of the drive power signal, and if the grounding end of the drive control circuit 13 has zero potential, the voltage range of the power input signal and the voltage range of the drive power signal determined thereby will directly affect the interval in which the drive control circuit 13 can normally work.

[0035] However, by providing the drive power signal and the common reference signal to the power supply end and the grounding end of the drive control circuit 13 respectively, the potential of the grounding end of the drive control circuit 13 is not zero, but the voltage difference between the drive power signal and the common reference signal is actually used as the drive power of the drive control circuit 13.

[0036] It can be understood that the common reference signal is specifically obtained by using the power input signal, and the drive power signal is obtained by using the common reference signal, so that when the voltage of the power input signal is large, the common reference signal and the drive power signal will be in a larger voltage range; but the voltage difference between the drive power signal and the common reference signal will still be maintained in a smaller voltage range, thereby effectively reducing the requirement of the drive control circuit 13 for voltage resistance, or directly obtaining the power supply signal from the power input signal and the requirement of the circuit architecture correspondingly configured, especially when the voltage of the power input signal is large, such as greater than 100V, the drive control circuit 13 will no longer be directly affected by the voltage of the power input signal, thereby effectively simplifying the additional circuit elements in the auxiliary source circuit designed by using the flyback topology to adapt to wide range input conditions.

[0037] In addition, the set voltage threshold is a reasonable voltage range of the power supply signal for starting the normal work of the drive control circuit 13, such as 7V, 7.5V or 8V, or any reasonable voltage value, which is not limited in the present application.

[0038] The voltage conversion circuit 11 is also configured to receive a driving control signal sent by the driving control circuit 13, and trigger the switch device in the voltage conversion circuit 11 to be turned on or turned off under the action of the driving control signal, so as to adjust and convert the power input signal to obtain the power supply output signal with stable voltage.

[0039] The above scheme generates the driving control signal by using the voltage difference between the driving power signal and the common reference signal, so that when the wide range input condition is encountered, that is, the voltage of the power input signal is large, especially greater than 100V, the voltage difference between the corresponding driving power signal and the common reference signal can still be maintained in a small voltage range, so that the driving control circuit 13 can be maintained in normal operation by means of the voltage difference in the small voltage range, to avoid the voltage of the driving power signal being too large to be directly used as the working power supply of the driving control circuit 13 when the voltage of the power input signal is large; and the circuit elements additionally added in the auxiliary source circuit designed by using the flyback topology to adapt to the wide range input condition can be effectively simplified, thereby effectively saving the number of devices, reducing the manufacturing cost of the circuit and the loss of the device, and having great advantages in terms of circuit layout, circuit complexity, time sequence control complexity, etc., and effectively improving the adaptability, stability, reliability and economy of the product, and the product range is also wider.

[0040] In some embodiments, the driving control circuit 13 can specifically include one of any reasonable circuit unit with signal processing function, such as a control chip, an MCU (Micro Controller Unit) circuit, a CPU (Central Processing Unit), a single-chip microcomputer, a field programmable gate array, a programmable logic device, a discrete gate or transistor logic device, and a discrete hardware, and the present application does not limit this.

[0041] In some embodiments, the driving control signal can specifically be one or more of any reasonable control signal, such as a PWM (Pulse Width Modulation) signal or a PFM (Pulse Frequency Modulation) signal, and the present application does not limit this.

[0042] Please refer to Figure 2 , Figure 2 is a structural schematic diagram of the second embodiment of the power supply adjusting circuit provided by the present application. The power supply adjusting circuit in the embodiment is different from the first embodiment of the power supply adjusting circuit provided by the present application in that the voltage conversion circuit 21 in the power supply adjusting circuit 20 further specifically includes a power switch sub-circuit 211, an energy storage sub-circuit 212, a first feedback sub-circuit 213 and a second feedback sub-circuit 214.

[0043] Specifically, the power switch sub-circuit 211 is coupled with the energy storage sub-circuit 212 and the drive control circuit 23, and is used to realize physical and electrical connection with the external power supply circuit 101 to receive the direct current signal and / or alternating current signal with constant current and / or voltage provided by the power supply circuit 101, i.e. the power input signal.

[0044] The first feedback sub-circuit 213 is coupled with the power switch sub-circuit 211, the energy storage sub-circuit 212, the second feedback sub-circuit 214, the start enable circuit 22 and the drive control circuit 23, and the second feedback sub-circuit 214 is coupled with the energy storage sub-circuit 212 and the drive control circuit 23.

[0045] The first feedback sub-circuit 213 is used to sample the first feedback signal from the power switch sub-circuit 211, and obtain the common reference signal by using the first feedback signal, such as obtaining the voltage signal by using the current signal flowing through the power switch sub-circuit 211 through the corresponding configured capacitor and / or resistor, i.e. the common reference signal.

[0046] The second feedback sub-circuit 214 is used to obtain the second feedback signal by voltage sampling, transformation and other processing on the current flowing through the power switch sub-circuit 211 and the energy storage sub-circuit 212 through the corresponding configured capacitor and / or resistor.

[0047] The drive control circuit 23 is also used to receive the first feedback signal sent by the first feedback sub-circuit 213 and the second feedback signal sent by the second feedback sub-circuit 214, to use the voltage difference between the drive power signal and the common reference signal as the power supply signal of the drive control circuit 23, and compare the first feedback signal with the first voltage threshold to obtain the first comparison result, compare the second feedback signal with the second voltage threshold to obtain the second comparison result, and then generate the drive control signal based on the first comparison result and the second comparison result.

[0048] It is worth noting that the first voltage threshold and the second voltage threshold can be specifically understood as adjusting the level state of the drive control signal to periodically trigger the power switch sub-circuit 211 to turn on or turn off, and setting any reasonable threshold voltage, so as to be able to determine one or more of the signal period, duty cycle, signal frequency and other arbitrary reasonable signal parameters of the drive control signal by using the first comparison result and the second comparison result, and the first voltage threshold and the second voltage threshold can be specifically determined by the actual application scenario, which is not limited in the present application.

[0049] In some embodiments, the driving control circuit 23 can specifically adjust the driving control signal from the first level to the second level in response to the first feedback signal being greater than the first voltage threshold, and adjust the driving control signal from the second level to the first level in response to the second feedback signal being less than the second voltage threshold, so as to periodically adjust the level state of the driving control signal in response to the periodically changing first feedback signal and second feedback signal; or, adjust the driving control signal from the first level to the second level in response to the first feedback signal being less than the first voltage threshold, and adjust the driving control signal from the second level to the first level in response to the second feedback signal being greater than the second voltage threshold, which can be specifically determined by the actual application scenario, and the present application does not make any limitation in this regard.

[0050] The first level can specifically be a low level, and the second level can correspond to a high level; or the first level can specifically be a high level, and the second level can correspond to a low level, which is not limited in the present application.

[0051] The power switch sub-circuit 211 is specifically further configured to receive the driving control signal sent by the driving control circuit 23, so as to change the switching state under the action of the driving control signal by using the switching action mechanism in the power switch sub-circuit 211, such as the switching action mechanism of IGBT, high-frequency transistor, MOS, etc., and cooperate with the energy storage sub-circuit 212, that is, charge and discharge the energy storage sub-circuit 212, so as to adjust and convert the power input signal of the power supply circuit 101, thereby adjusting the power input signal into the power supply output signal.

[0052] In an embodiment, the voltage conversion circuit 21 specifically further comprises a freewheeling sub-switching circuit 215, which is coupled to the first feedback sub-circuit 213, the second feedback sub-circuit 214 and the energy storage sub-circuit 212, and the freewheeling sub-switching circuit 215 is specifically configured to cooperate with the energy storage sub-circuit 212, such as providing a discharging freewheeling path for the energy storage current of the energy storage sub-circuit 212, so as to adjust the voltage of the first feedback signal and the second feedback signal to periodically change, thereby obtaining the periodically changing driving control signal.

[0053] In an embodiment, the voltage conversion circuit 21 specifically further comprises a voltage stabilizing sub-circuit 216, which is coupled to the energy storage sub-circuit 212 and the second feedback sub-circuit 214, and is configured to be coupled to the back-end functional circuit 102.

[0054] It is worth noting that the back-end functional circuit 102 can specifically be a load circuit operating by using the power supply output signal of the power supply adjusting circuit 20, or a lower circuit realizing any other reasonable signal function by using the power supply output signal of the power supply adjusting circuit 20, which is not limited in the present application.

[0055] The voltage stabilizing sub-circuit 216 is configured to receive the energy storage output signal from the energy storage sub-circuit 212, and process the energy storage output signal via internal circuit elements of the voltage stabilizing sub-circuit 216 to obtain a power supply output signal, and provide the power supply output signal to the back-end functional circuit 102 to drive the back-end functional circuit 102 to implement its signal function.

[0056] The start-up enabling circuit 22 is further configured to receive the common reference signal sent from the first feedback sub-circuit 213 and the power supply output signal sent from the voltage stabilizing sub-circuit 216, and in response to receiving the switch enabling signal, obtain a driving power signal via internal switching mechanism thereof using the common reference signal and the power supply output signal.

[0057] In an embodiment, the driving control circuit 23 further includes a control sub-circuit 231 and a soft-start sub-circuit 232, the control sub-circuit 231 being coupled to the soft-start sub-circuit 232, the first feedback sub-circuit 213, the second feedback sub-circuit 214, the energy storage sub-circuit 212, the start-up enabling circuit 22, and the power switch sub-circuit 211.

[0058] The control sub-circuit 231 is configured to receive the common reference signal and the first feedback signal sent from the first feedback sub-circuit 213, the second feedback signal sent from the second feedback sub-circuit 214, and the driving power signal sent from the start-up enabling circuit 22, and use a voltage difference between the driving power signal and the common reference signal as a power supply signal of the driving control circuit 23, and compare the first feedback signal with a first voltage threshold to obtain a first comparison result, compare the second feedback signal with a second voltage threshold to obtain a second comparison result, and generate a driving control signal based on the first comparison result and the second comparison result.

[0059] The soft-start sub-circuit 232 is configured to receive the common reference signal sent from the first feedback sub-circuit 213, and use the common reference signal to adjust the driving control signal, such as adjusting a duty cycle of the driving control signal in response to first power-on, and use the adjusted driving control signal to control the power switch sub-circuit 211 to suppress a transient peak current signal that may exist in the early stage of first power-on.

[0060] In an embodiment, the driving control circuit 23 further includes an oscillation wave sub-circuit 233, the oscillation wave sub-circuit 233 being coupled to the first feedback sub-circuit 213 and the control sub-circuit 231.

[0061] The oscillation wave sending circuit 233 is configured to receive the first feedback signal sent by the first feedback sub-circuit 213, and to enhance the voltage amplitude of the first feedback signal as a whole, so as to avoid the first feedback signal from having a negative voltage or a voltage amplitude that is too small to be identified, thereby affecting the generation of the driving control signal. The control sub-circuit 231 is configured to compare the first feedback signal with the first voltage threshold to obtain a first comparison result, and to generate the driving control signal by using the first comparison result.

[0062] In an embodiment, the start enable circuit 22 further includes a first switch sub-circuit 221, a second switch sub-circuit 222, and a third switch sub-circuit 223. The first switch sub-circuit 221 is coupled to the second switch sub-circuit 222 and the third switch sub-circuit 223, and is configured to be coupled to the power supply circuit 101 and the signal processing circuit 103. The second switch sub-circuit 222 is coupled to the power switch sub-circuit 211, the first feedback sub-circuit 213, and the third switch sub-circuit 223. The third switch sub-circuit 223 is coupled to the voltage stabilizing sub-circuit 216 and the driving control circuit 23.

[0063] The first switch sub-circuit 221 is configured to receive the DC input signal sent by the power supply circuit 101 and the switch enable signal sent by the upper-level signal processing circuit 103, and to use the DC input signal as a power supply. Under the action of the switch enable signal, the first switch sub-circuit 221 triggers the internal switching device to change the switching state, so as to obtain the first switch signal.

[0064] The second switch sub-circuit 222 is configured to receive the first switch signal sent by the first switch sub-circuit 221, the power supply input signal sent by the power switch sub-circuit 211, and the common reference signal sent by the first feedback sub-circuit 213. In response to the first switch signal, the power supply input signal, and the common reference signal, the second switch sub-circuit 222 triggers the internal switching device to change the switching state, so as to obtain the second switch signal.

[0065] The third switch sub-circuit 223 is configured to receive the first switch signal sent by the first switch sub-circuit 221, the second switch signal sent by the second switch sub-circuit 222, and the power supply output signal sent by the voltage stabilizing sub-circuit 216. In response to the first switch signal, the second switch signal, and the power supply output signal, the third switch sub-circuit 223 triggers the internal switching device to change the switching state, so as to obtain the driving power signal.

[0066] Please refer to Figure 3 , Figure 3 is a structural schematic diagram of a third embodiment of the power supply regulating circuit of the present application. The power supply regulating circuit in the present embodiment is different from the second embodiment of the power supply regulating circuit provided by the present application in that the voltage stabilizing sub-circuit 316 in the power supply regulating circuit 30 further includes a first voltage stabilizing diode Dw1, a voltage stabilizing resistor Rw, and a second voltage stabilizing diode Dw2.

[0067] The first end of the first voltage stabilizing diode Dw1 is coupled to the energy storage sub-circuit 312, the second end of the first voltage stabilizing diode Dw1 is coupled to the first end of the voltage stabilizing resistor Rw and the first end of the second voltage stabilizing diode Dw2, the second end of the voltage stabilizing resistor Rw is coupled to the second feedback sub-circuit 314 and the driving control circuit 33, and the second end of the second voltage stabilizing diode Dw2 is configured to be coupled to the back-end functional circuit 102.

[0068] In an embodiment, the power switch sub-circuit 311 further comprises a power switch QG1, the energy storage sub-circuit 312 comprises an energy storage inductor Lr1, the first feedback sub-circuit 313 comprises a first resistor R1, the second feedback sub-circuit 314 comprises a second resistor R2, and the freewheeling sub-switch circuit 315 comprises a freewheeling switch Dx.

[0069] The second end of the power switch QG1 is configured to be coupled to the power supply circuit 101, the third end of the power switch QG1 is configured to be coupled to the first end of the first resistor R1 and the third end of the driving control circuit 33, the second end of the first resistor R1 is coupled to the first end of the energy storage inductor Lr1, the first end of the second resistor R2, the second end of the freewheeling switch Dx, the first end of the start-up enable circuit 32, and the fifth end of the driving control circuit 33, the second end of the energy storage inductor Lr1 is coupled to the first end of the freewheeling switch Dx and grounded, the second end of the second resistor R2 is coupled to the second end of the driving control circuit 33, and the first end of the power switch QG1 is coupled to the sixth end of the driving control circuit 33.

[0070] The second end of the energy storage inductor Lr1 is further coupled to the first end of the first voltage stabilizing diode Dw1, and the second end of the second resistor R2 is further coupled to the second end of the voltage stabilizing resistor Rw.

[0071] In some embodiments, the power switch QG1 can be one or a combination of MOS, high-frequency transistor, IGBT, or any other reasonable switching device, which is not limited in the present application.

[0072] The first end of the power switch QG1 corresponds to a control end, so that when a corresponding driving control signal is received at the first end of the power switch QG1, the second end and the third end of the power switch QG1 are triggered to be turned on or turned off under the action of the driving control signal.

[0073] In some embodiments, the freewheeling switch Dx can be one of diode, MOS, high-frequency transistor, transistor, thyristor, IGBT, or any other reasonable switching device, which is not limited in the present application.

[0074] Wherein, the freewheeling switch tube Dx is preferably a diode; and when the freewheeling switch tube Dx is a MOS tube, a high-frequency transistor, a triode, a thyristor or an IGBT, the third end of the freewheeling switch tube Dx is specifically further used for receiving a PWM signal corresponding to the driving control signal in phase inversion sent by the driving control circuit 33 or the external signal processing circuit 103, so that the freewheeling switch tube Dx is triggered to be turned off when the power switch tube QG1 is triggered to be turned on, and the freewheeling switch tube Dx is triggered to be turned on when the power switch tube QG1 is triggered to be turned off.

[0075] And in other embodiments, the first feedback sub-circuit 313 specifically further includes a first capacitor C1, a first end of the first capacitor C1 being coupled to a first end of the first resistor R1, and a second end of the first capacitor C1 being coupled to a second end of the first resistor R1, so as to obtain the first feedback signal by cooperating with the first resistor R1 using the output current of the power switch tube QG1, and obtain the common reference signal using the first feedback signal.

[0076] In an embodiment, the voltage conversion circuit 31 specifically further includes an input switch sub-circuit 317, the input switch sub-circuit 317 further including a first diode D1, a second diode D2 and a third diode D3, and the power supply circuit 101 specifically further including a first power supply PV, a second power supply DC and a third power supply BAT, a first end of the first diode D1, a first end of the second diode D2 and a first end of the third diode D3 being respectively used for coupling to a first end of the first power supply PV, the second power supply DC and the third power supply BAT, so as to respectively receive a first power supply PV input, a second power supply DC input and a third power supply BAT input, and a second end of the first diode D1, a second end of the second diode D2 and a second end of the third diode D3 being coupled to a second end of the power switch tube QG1.

[0077] Wherein, the first power supply PV input and the second power supply DC input can be the same or different; and the first power supply PV input or the second power supply DC input can be a power supply input signal; and the third power supply BAT input is a direct current input signal, so as to supply power to the entire power supply adjustment circuit 30.

[0078] And in other embodiments, the input switch sub-circuit 317 specifically further can include 2, 4 or 5 or any reasonable number of diodes, and the power supply circuit 101 also has 2, 4 or 5 or any reasonable number of power supply inputs, which is specifically determined by the actual application scenario, and the present application does not limit this.

[0079] In an embodiment, the voltage conversion circuit 31 further comprises a filter and voltage stabilizing sub-circuit 318, which further comprises a second capacitor C2, a third capacitor C3, a third resistor R3 and a fourth resistor R4, a first end of the second capacitor C2 is coupled to a second end of the energy storage inductor Lr1, a first end of the third capacitor C3, a first end of the third resistor R3 and a first end of the fourth resistor R4, a second end of the second capacitor C2 is coupled to a second end of the third power supply BAT, a second end of the third capacitor C3, a second end of the third resistor R3 and a second end of the fourth resistor R4 and grounded.

[0080] In an embodiment, the control sub-circuit 231 further comprises a control chip U1 and a fifth capacitor C5, the soft start sub-circuit 232 further comprises a first switch tube Q1, a fourth capacitor C4, a fourth diode D4 and a fifth resistor R5, and the oscillation and wave generation sub-circuit 333 further comprises a sixth resistor R6, a second switch tube Q2 and a seventh resistor R7.

[0081] In an embodiment, the first switch tube Q1 is coupled to the first end of the control chip U1, the third end of the first switch tube Q1 is coupled to the first end of the fourth capacitor C4, the second end of the first resistor R1 and the first end of the second resistor R2, the third end of the first switch tube Q1 is coupled to the second end of the fourth capacitor C4, the first end of the fourth diode D4 and the first end of the fifth resistor R5, the second end of the fourth diode D4 is coupled to the second end of the fifth resistor R5, the eighth end of the control chip U1, the first end of the seventh resistor R7 and the second end of the second switch tube Q2, the second end of the seventh resistor R7 is coupled to the first end of the second switch tube Q2 and the fourth end of the control chip U1, the third end of the second switch tube Q2 is coupled to the first end of the sixth resistor R6, the second end of the sixth resistor R6 is coupled to the third end of the control chip U1, the third end of the power switch tube QG1, the first end of the first resistor R1 and the first end of the first capacitor C1, the seventh end of the control chip U1 is coupled to the first end of the fifth capacitor C5, the second end of the fifth capacitor C5 is coupled to the fifth end of the control chip U1 and the second end of the first resistor R1 and the first end of the energy storage inductor Lr1, the sixth end of the control chip U1 is coupled to the first end of the power switch tube QG1.

[0082] In an embodiment, the first switch sub-circuit 321 further comprises an eighth resistor R8, a ninth resistor R9, a third switch tube Q3, a fifth diode D5, a tenth resistor R10 and a fourth switch tube Q4, the second switch sub-circuit 322 further comprises an eleventh resistor R11, a twelfth resistor R12, a seventh diode D7, a fourteenth resistor R14 and a fifth switch tube Q5, and the third switch sub-circuit 323 further comprises a sixth switch tube Q6, a thirteenth resistor R13 and a sixth diode D6.

[0083] The first end of the eighth resistor R8 is coupled to the first end of the third power supply BAT, the second end of the eighth resistor R8 is coupled to the first end of the ninth resistor R9 and the second end of the third switch tube Q3, the second end of the ninth resistor R9 is coupled to the third end of the fourth switch tube Q4, the third end of the third switch tube Q3 is coupled to the first end of the fifth diode D5, the first end of the third switch tube Q3 is coupled to the signal processing circuit 103, the second end of the fifth diode D5 is coupled to the first end of the tenth resistor R10, the second end of the tenth resistor R10 is coupled to the first end of the fourth switch tube Q4, the third end of the fourth switch tube Q4 is coupled to the second end of the sixth diode D6 and the first end of the eleventh resistor R11, the second end of the eleventh resistor R11 is coupled to the second end of the seventh diode D7, the first end of the twelfth resistor R12 and the first end of the fifth switch tube Q5, the second end of the twelfth resistor R12 is coupled to the first end of the fourteenth resistor R14 and the first end of the power switch tube QG1, the second end of the fourteenth resistor R14 is coupled to the second end of the fifth switch tube Q5, the third end of the fifth switch tube Q5 is coupled to the second end of the sixth switch tube Q6 and the second end of the second freewheeling diode, the first end of the sixth switch tube Q6 is coupled to the first end of the thirteenth resistor R13, the second end of the thirteenth resistor R13 is coupled to the first end of the sixth diode D6, the third end of the sixth switch tube Q6 is coupled to the seventh end of the control chip U1 and the first end of the fifth capacitor C5.

[0084] In some embodiments, the first switch tube Q1 to the sixth switch tube Q6 can be one or a combination of MOS tube, high-frequency transistor, triode, thyristor, IGBT, etc., and the present application does not limit the same.

[0085] It can be understood that the signal processing circuit 103 is used to send a switch enable signal to the first end of the third switch tube Q3 to trigger the third switch tube Q3 to turn on the second end and the third end, and make the direct current input signal provided by the third power supply BAT pass through the fifth switch tube Q5 and the sixth switch tube Q6 to the control chip U1 to realize the on-off control of the power switch tube QG1, so as to start the power supply regulating circuit 30; and when the power supply regulating circuit 30 is started, the fourth switch tube Q4 is cut off, and the sixth switch tube Q6 continues to be turned on to maintain the normal work of the control chip U1.

[0086] For the convenience of description, the power supply regulating circuit 30 specifically includes the first potential node Vin, the second potential node VSS, the third potential node Vout, the fourth potential node DGND, the fifth potential node FB, the sixth potential node VF, the seventh potential node VCC, the eighth potential node VDD, and the ninth potential node CS, as shown in Figure 3 The working state of the voltage conversion circuit 31 is as follows:

[0087] Period A, power switch QG1 trigger conduction, freewheeling switch Dx off, energy storage inductor Lr1 energy storage;

[0088] At this time the eighth potential node VDD, seventh potential node VCC, sixth potential node VF voltage close;

[0089] The sixth potential node VF potential than the third potential node Vout high;

[0090] Potential: the first potential node Vin > second potential node VSS > fifth potential node FB > sixth potential node VF > seventh potential node VCC > eighth potential node VDD > third potential node Vout > fourth potential node DGND = 0V;

[0091] Energy storage inductor Lr1 on the energy storage current rise, until the trigger control chip U1 third end of the voltage threshold settings, close to the drive control signal of power switch QG1, into the cycle B.

[0092] Period B, power switch QG1 off, freewheeling switch Dx conduction, energy storage inductor Lr1 energy release;

[0093] At this time the eighth potential node VDD, seventh potential node VCC, sixth potential node VF, third potential node Vout voltage close;

[0094] The sixth potential node VF potential than the third potential node Vout low;

[0095] Potential: the third potential node Vout > sixth potential node VF > seventh potential node VCC > eighth potential node VDD > fifth potential node FB > fourth potential node DGND = 0V > second potential node VSS;

[0096] Energy storage inductor Lr1 on the energy storage current drop, until the trigger control chip U1 second end of the voltage threshold settings, sixth potential node VF drop, open the next cycle of drive, into the cycle A.

[0097] Wherein, the common reference signal, power supply output signal, driving power signal, the first feedback signal and the second feedback signal respectively correspond to the second potential node VSS, seventh potential node VCC, eighth potential node VDD, ninth potential node CS and fifth potential node FB output signal, the above cycle A-B repeat, electric energy will be transferred from the high voltage side of power switch QG1 to the low voltage side circuit.

[0098] It is worth mentioning that the voltage conversion circuit 31 takes the sixth potential node VF and the second potential node VSS as sampling to realize voltage stabilization control, so as to realize the voltage stabilization effect between the third potential node Vout and the fourth potential node DGND. The second potential node VSS is a voltage floating point, and the reference point of the control chip U1 is the second potential node VSS. In different period working conditions, the voltage threshold of the ninth potential node CS and the fifth potential node FB can be used to control the closed loop of the wave logic, so as to realize the voltage stabilization effect, and can effectively meet the wide range of power input signals, especially the application requirement of the input voltage above 100V, fills the short board of the conventional auxiliary source BUCK application, and can be applied to a wide range of products.

[0099] The application also specifically adopts an electronic device, please refer to Figure 4 , Figure 4 is a structural schematic diagram of an embodiment of the electronic device of the application. In the embodiment, the electronic device 40 comprises a shell 41 and a power supply adjustment circuit 42 connected with the shell 41.

[0100] Optionally, the electronic device 40 can be any reasonable electronic mechanical device such as a photovoltaic charging device, a mobile energy storage device, a server, a smart communication device, etc., and the application does not limit this.

[0101] It should be noted that the power supply adjustment circuit 42 described in the embodiment is the power supply adjustment circuit 10, the power supply adjustment circuit 20 or the power supply adjustment circuit 30 described in any of the above embodiments, and the details are described in Figures 1-3 and the related text content, which will not be repeated here.

[0102] The application has the beneficial effect that, different from the prior art, the voltage conversion circuit in the power supply adjusting circuit provided by the application is configured to receive a power input signal sent by a power supply circuit to obtain a common reference signal by using the power input signal; the start enable circuit is configured to receive a switch enable signal and the common reference signal to obtain a driving power signal by using the common reference signal in response to the switch enable signal; the driving control circuit is configured to receive the common reference signal and the driving power signal to generate a driving control signal by using the voltage difference between the driving power signal and the common reference signal; and the power switch sub-circuit is configured to receive and change the switch state in response to the driving control signal, so as to adjust the power input signal into a power supply output signal, so that when a wide range of input conditions, that is, the voltage of the power input signal is relatively large, especially greater than 100V, the voltage difference between the corresponding driving power signal and the common reference signal can still be maintained in a relatively small voltage range, so that the driving control circuit can be maintained in normal working operation by means of the voltage difference in the relatively small voltage range, so as to avoid the situation that the voltage of the driving power signal obtained is relatively large, which cannot be directly used as the working power supply by the driving control circuit; and the circuit elements additionally added in the auxiliary circuit designed by using the flyback topology to adapt to the wide range of input conditions can be effectively simplified, so that the circuit manufacturing cost and device loss can be effectively reduced, and the application has great advantages in terms of circuit layout, circuit complexity, time sequence control complexity and the like, and the adaptability, stability and economy of the product are effectively improved.

[0103] The above description is only an embodiment of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process transformation based on the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the application.

Claims

1. A power supply regulating circuit, characterized by, The power supply regulating circuit comprises: a voltage conversion circuit coupled with the power supply circuit, configured to receive a power input signal transmitted by the power supply circuit to obtain a common reference signal by using the power input signal; an enable circuit coupled with the voltage conversion circuit, configured to receive a switch enable signal and the common reference signal transmitted by the voltage conversion circuit to change a switch state under the action of the switch enable signal and obtain a driving power signal by using the common reference signal; a drive control circuit coupled with the voltage conversion circuit and the enable circuit, configured to receive the common reference signal transmitted by the voltage conversion circuit and the driving power signal transmitted by the enable circuit to generate a drive control signal by using a voltage difference between the driving power signal and the common reference signal; wherein the voltage conversion circuit is further configured to receive the drive control signal transmitted by the drive control circuit to change the switch state under the action of the drive control signal, so as to regulate the power input signal into a power output signal.

2. The power supply regulating circuit of claim 1, wherein: the voltage conversion circuit further comprises a power switch sub-circuit, an energy storage sub-circuit, a first feedback sub-circuit and a second feedback sub-circuit, the power switch sub-circuit is coupled with the energy storage sub-circuit and the drive control circuit, and is coupled with the power supply circuit, the first feedback sub-circuit is coupled with the power switch sub-circuit, the energy storage sub-circuit, the second feedback sub-circuit, the enable circuit and the drive control circuit, and the second feedback sub-circuit is coupled with the energy storage sub-circuit and the drive control circuit; the first feedback sub-circuit is configured to obtain a first feedback signal in the power switch sub-circuit and obtain the common reference signal by using the first feedback signal; the second feedback sub-circuit is configured to obtain a second feedback signal in the energy storage sub-circuit; the drive control circuit is further configured to receive the first feedback signal transmitted by the first feedback sub-circuit and the second feedback signal transmitted by the second feedback sub-circuit to generate the drive control signal by using the voltage difference, a first comparison result between the first feedback signal and a first voltage threshold, and a second comparison result between the second feedback signal and a second voltage threshold; the power switch sub-circuit is configured to receive the power input signal transmitted by the power supply circuit and the drive control signal transmitted by the drive control circuit to change the switch state under the action of the drive control signal, and to regulate the power input signal into the power output signal in cooperation with the energy storage sub-circuit.

3. The power supply regulating circuit of claim 2, wherein: the voltage conversion circuit further comprises a freewheeling sub-switch circuit coupled with the first feedback sub-circuit, the second feedback sub-circuit and the energy storage sub-circuit. The freewheeling sub-circuit is configured to cooperate with the energy storage sub-circuit to adjust the first feedback signal and the second feedback signal.

4. The power supply regulating circuit of claim 3, wherein, The voltage conversion circuit further comprises a voltage stabilizing sub-circuit, the voltage stabilizing sub-circuit being coupled to the energy storage sub-circuit and the second feedback sub-circuit, and configured to be coupled to a back-end functional circuit; The voltage stabilizing sub-circuit is configured to receive an energy storage output signal of the energy storage sub-circuit, to obtain the power supply output signal using the energy storage output signal, and to provide the power supply output signal to the back-end functional circuit. The start-up enabling circuit is further configured to receive the common reference signal sent by the first feedback sub-circuit and the power supply output signal sent by the voltage stabilizing sub-circuit, to obtain the driving power signal using the common reference signal and the power supply output signal.

5. The power supply regulating circuit of claim 4, wherein, The voltage stabilizing sub-circuit comprises a first voltage stabilizing diode, a voltage stabilizing resistor, and a second voltage stabilizing diode, a first end of the first voltage stabilizing diode being coupled to the energy storage sub-circuit, a second end of the first voltage stabilizing diode being coupled to a first end of the voltage stabilizing resistor and a first end of the second voltage stabilizing diode, a second end of the voltage stabilizing resistor being coupled to the second feedback sub-circuit and the driving control circuit, and a second end of the second voltage stabilizing diode being configured to be coupled to the back-end functional circuit.

6. The power supply regulating circuit of claim 4, wherein, The driving control circuit further comprises a control sub-circuit and a soft-start sub-circuit, the control sub-circuit being coupled to the soft-start sub-circuit, the first feedback sub-circuit, the second feedback sub-circuit, the energy storage sub-circuit, the start-up enabling circuit, and the power switch sub-circuit; The control sub-circuit is configured to receive the common reference signal and the first feedback signal sent by the first feedback sub-circuit, the second feedback signal sent by the second feedback sub-circuit, and the driving power signal sent by the start-up enabling circuit, to generate the driving control signal using the voltage difference, the first comparison result, and the second comparison result; The soft-start sub-circuit is configured to receive the common reference signal sent by the first feedback sub-circuit, to adjust the driving control signal using the common reference signal.

7. The power supply regulating circuit of claim 6, wherein, The driving control circuit further comprises a shock wave sub-circuit, the shock wave sub-circuit being coupled to the first feedback sub-circuit and the control sub-circuit; The shock wave sub-circuit is configured to receive the first feedback signal sent by the first feedback sub-circuit, to boost the voltage amplitude of the first feedback signal, and to cause the control sub-circuit to obtain the first comparison result by comparing the first feedback signal with the first voltage threshold after the voltage boosting.

8. The power supply regulating circuit of claim 4, wherein, The starting enable circuit comprises a first switching sub-circuit, a second switching sub-circuit and a third switching sub-circuit, the first switching sub-circuit is coupled with the second switching sub-circuit and the third switching sub-circuit, and is used for being coupled with the power supply circuit and the signal processing circuit, the second switching sub-circuit is coupled with the power switching sub-circuit, the first feedback sub-circuit and the third switching sub-circuit, and the third switching sub-circuit is coupled with the voltage stabilizing sub-circuit and the driving control circuit; The first switching sub-circuit is configured to receive a direct current input signal sent by the power supply circuit and the switching enable signal sent by the signal processing circuit, to change the switching state under the action of the switching enable signal by using the direct current input signal, and to obtain the first switching signal. The second switching sub-circuit is configured to receive the first switching signal sent by the first switching sub-circuit, the power supply input signal sent by the power switching sub-circuit and the common reference signal sent by the first feedback sub-circuit, to change the switching state in response to the first switching signal, the power supply input signal and the common reference signal, and to obtain the second switching signal. The third switching sub-circuit is configured to receive the first switching signal sent by the first switching sub-circuit, the second switching signal sent by the second switching sub-circuit and the power supply output signal sent by the voltage stabilizing sub-circuit, to change the switching state in response to the first switching signal, the second switching signal and the power supply output signal, and to obtain the driving power signal.

9. The power regulating circuit according to any one of claims 3-8, wherein The power switching sub-circuit comprises a power switching tube, the energy storage sub-circuit comprises an energy storage inductor, the first feedback sub-circuit comprises a first resistor, the second feedback sub-circuit comprises a second resistor, and the freewheeling sub-switching circuit comprises a freewheeling switching tube, a second end of the power switching tube is used for being coupled with the power supply circuit, a third end of the power switching tube is used for being coupled with a first end of the first resistor and a third end of the driving control circuit, a second end of the first resistor is coupled with a first end of the energy storage inductor, a first end of the second resistor, a second end of the freewheeling switching tube, a first end of the starting enable circuit and a fifth end of the driving control circuit, a second end of the energy storage inductor is coupled with a first end of the freewheeling switching tube and grounded, a second end of the second resistor is coupled with a second end of the driving control circuit, and a first end of the power switching tube is coupled with a sixth end of the driving control circuit.

10. An electronic device, comprising: The electronic device comprises a shell and a power regulating circuit connected to the shell; The power regulating circuit is the power regulating circuit according to any one of claims 1-9.

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