Power conversion chip, electronic equipment and transient control method

Abstract

The invention provides a power conversion chip, electronic equipment and a transient control method, and the power conversion chip comprises a driving module which is used for outputting a driving current controlled by a control signal, a driving current output end of the driving module is used for being connected to an external first energy storage assembly, and the first energy storage assembly provides an output voltage for a load end; the power supply control module is used for being connected to a voltage feedback input end and outputting a first control signal to the driving module based on the voltage input by the voltage feedback input end so as to adjust the output state of the driving current, and the voltage feedback input end is used for being connected to a load end and collecting the output voltage of the load end; and the transient adjustment module is used for being connected to the power supply control module and adjusting the voltage of the driving current output end of the driving module based on the voltage input by the voltage feedback input end and the first control signal.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a power conversion chip, an electronic device and a transient control method. Background Art

[0002] As the performance of terminal device processors improves, terminal devices also place higher requirements on power supplies. Among them, larger current steps and larger current pull-up slopes pose great challenges to the transient performance of the power supply.

[0003] In current terminal equipment, when there is a transient change in load current, the front-end power supply cannot adjust the energy supply instantly, for example Figure 1 As shown, when the load current I LOAD When the voltage rises, the front-stage power supply cannot increase the output energy instantly, and it takes a certain amount of time to adjust to the current demand of the load. At this time, the supplementary energy in a short period of time is provided by the output capacitor of the power supply, which is manifested as the output voltage V O When the output voltage drops to a certain level, it will affect the load operation; similarly, when the load current I LOAD During attenuation, the front-stage power supply cannot adjust the energy reduction instantly, and it takes a certain amount of time to adjust to the current demand of the load. At this time, the extra energy is applied to the output capacitor, resulting in the output voltage V O If the voltage rise is too large, it will cause damage to the load devices.

[0004] Therefore, how to provide stability of the output voltage at the load end has become a research hotspot for those skilled in the art. Summary of the invention

[0005] A power conversion chip, comprising:

[0006] A driving module, used for outputting a driving current controlled by a control signal, wherein a driving current output terminal of the driving module is used for connecting to an external first energy storage component, and the first energy storage component provides an output voltage to a load terminal;

[0007] A power supply control module, connected to a voltage feedback input terminal, outputting a first control signal to the driving module based on a voltage input to the voltage feedback input terminal to adjust an output state of the driving current, wherein the voltage feedback input terminal is connected to a load terminal to collect an output voltage of the load terminal;

[0008] The transient adjustment module is connected to the power control module and is used to adjust the voltage of the driving current output terminal of the driving module based on the voltage input to the voltage feedback input terminal and the first control signal.

[0009] Optionally, the power control module includes an error amplification unit and a modulation unit, the input end of the error amplification unit is connected to the voltage feedback input end, and is used to amplify the error between the voltage input to the voltage feedback input end and the target voltage and then output a first voltage signal; the modulation unit is connected to the output end of the error amplification unit and the input end of the driving module, and is used to output a first control signal according to the first voltage signal;

[0010] The transient adjustment module includes: a comparison unit, a control unit and a switching unit;

[0011] The input end of the comparison unit is connected to the output end of the error amplification unit, and inputs the first voltage signal output by the error amplification unit, and is used to output a first signal according to the transient control condition and the first voltage signal;

[0012] The control unit is connected to the output end of the comparison unit and the output end of the modulation unit, and outputs a second control signal based on the first signal output by the comparison unit and the first control signal output by the modulation unit to control the working state of the switching unit to achieve the adjustment of the voltage of the driving current output end of the driving module;

[0013] The switching unit is connected to the second energy storage component and is used to adjust the working state in response to the second control signal to control the charging and discharging state of the second energy storage component and adjust the voltage of the driving current output terminal of the driving module.

[0014] Optionally, the second control signal includes a first sub-control signal and a second sub-control signal, and the control unit has a first output terminal and a second output terminal, wherein the first output terminal is used to output the first sub-control signal, and the second output terminal is used to output the second sub-control signal;

[0015] The switching unit comprises:

[0016] a first control switch component, wherein a control end of the first control switch component is connected to a first output end of the control unit, and controls an electrical connection state of a first end of the second energy storage component based on a first sub-control signal outputted from the first output end;

[0017] a second control switch component, wherein a control end of the second control switch component is connected to a second output end of the control unit, and controls an electrical connection state of a second end of the second energy storage component based on a second sub-control signal outputted from the second output end;

[0018] The electrical connection state of the first end and the electrical connection state of the second end of the second energy storage component determine the charge and discharge state of the second energy storage component.

[0019] Optionally, the first control switch component includes a plurality of sub-switches, and the plurality of sub-switches include: a first sub-switch, a second sub-switch and a third sub-switch, the control end of each of the sub-switches is connected to the first output end of the control unit, the first end of each of the sub-switches is electrically connected to the first end of the second energy storage component, the second end of the first sub-switch is connected to the voltage feedback input end, the second end of the second sub-switch is connected to the drive current output end, and the second end of the third sub-switch is suspended;

[0020] The second control switch component includes two sub-switches, a fourth sub-switch and a fifth sub-switch. The control end of each sub-switch in the second control switch component is connected to the second output end of the control unit, the first end of each sub-switch in the second control switch component is connected to the second end of the second energy storage component, the second end of the fourth sub-switch is grounded, and the second end of the fifth sub-switch is connected to the voltage feedback input end.

[0021] Optionally, the comparison unit includes:

[0022] A first comparator, wherein one input terminal of the first comparator is connected to the output terminal of the error amplifying unit of the power control module, the other input terminal is used to input an overshoot threshold voltage, and outputs a first sub-signal based on the first voltage signal output by the error amplifying unit and the overshoot threshold voltage;

[0023] A second comparator, wherein one input terminal of the second comparator is connected to the output terminal of the error amplifying unit of the power control module, the other input terminal is input with the undershoot threshold voltage, and the second comparator outputs a second sub-signal based on the first voltage signal output by the error amplifying unit and the undershoot threshold voltage;

[0024] The control unit is connected to the output ends of the first comparator and the second comparator, and is used to output a second control signal based on the first sub-signal, the second sub-signal and the first control signal to control the working state of the switching unit to achieve voltage regulation of the driving current output end of the driving module.

[0025] Optionally, the control unit includes: a state machine and a logic subunit; wherein the logic subunit performs an AND operation based on the second sub-signal and the first control signal to output a third sub-signal;

[0026] The state machine outputs a second control signal based on the first sub-signal and the third sub-signal to control the working state of the switching unit.

[0027] Optionally, the driving module includes:

[0028] A driving unit, configured to receive the first control signal and output a third control signal;

[0029] A first MOS transistor and a second MOS transistor connected in series between a first power supply terminal and a second power supply terminal, wherein a voltage of the first power supply terminal is greater than a voltage of the second power supply terminal;

[0030] Wherein, the control end of the first MOS tube is connected to the output end of the driving unit, receives the third control signal, and the first end is connected to the first power supply end;

[0031] The control end of the second MOS tube is connected to the output end of the driving unit to receive the third control signal, and the second end is connected to the second power supply end;

[0032] The second end of the first MOS tube is connected to the first end of the second MOS tube as a driving current output end of the driving module;

[0033] The first control signal is used to control the on and off states of the first MOS transistor and the second MOS transistor.

[0034] An electronic device, comprising: a power conversion chip, a first energy storage component and a second energy storage component; wherein the input end of the first energy storage component is connected to the driving current output end of the power conversion chip, the output end is connected to the load end, and the load end is also connected to the voltage feedback input end of the power conversion chip; one end of the second energy storage component is connected to the first signal path end of the power conversion chip, and the other end is connected to the second signal path end of the power conversion chip;

[0035] The power conversion chip is used to control the driving current output by the current output end based on the voltage at the load end. The driving current is provided by the first energy storage component to the load end with an output voltage, and based on the voltage at the load end and the output state of the driving current, the charging and discharging state of the second energy storage component is controlled to achieve the regulation of the voltage at the driving current output end.

[0036] Optionally, the second energy storage component includes a capacitor, and both ends of the capacitor are electrically connected to a charge and discharge control path inside the power conversion chip; the power conversion chip includes a transient adjustment module, which is used to adjust the connection state of the charge and discharge control path based on the voltage of the voltage feedback input terminal and the control signal of the drive current to control the charge and discharge state of the second energy storage component.

[0037] Optionally, the power conversion chip is any of the power conversion chips described above, and the first signal path end and the second signal path end are connected to a transient adjustment module.

[0038] A transient control method is applied to an electronic device, wherein the electronic device includes a power conversion chip, a first energy storage component and a second energy storage component, including:

[0039] Based on the voltage at the load end, the driving current outputted from the driving current output end of the power conversion chip is controlled, the driving current output end of the driving module is used to be connected to an external first energy storage component, the first energy storage component provides an output voltage to the load end, and, based on the voltage at the load end and the output state of the driving current, the charging and discharging state of the second energy storage component is controlled to achieve the regulation of the voltage at the driving current output end.

[0040] Optionally, the power conversion chip includes: a first MOS transistor and a second MOS transistor connected in series between a first power terminal and a second power terminal, the voltage of the first power terminal is greater than the voltage of the second power terminal, and the second end of the first MOS transistor is connected to the first end of the second MOS transistor as a driving current output end of the driving module; the method also includes:

[0041] If the voltage at the load end is higher than the voltage at the drive current output end, and the difference between the voltage at the load end and the target voltage is greater than the overshoot threshold voltage, control the second energy storage component to charge to reduce the voltage at the load end;

[0042] If the voltage at the load end is lower than the voltage at the drive current output end, the difference between the voltage at the load end and the target voltage is greater than the undershoot threshold voltage and the first MOS tube is in a disconnected state, the second energy storage component is controlled to discharge to increase the voltage at the drive current output end. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, 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 embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0044] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0045] Figure 1 It is a schematic diagram of a curve showing a change in the output voltage at the load end when the current at the load end changes or decreases;

[0046] Figure 2A schematic diagram of the structure of a power conversion chip provided by an embodiment of the present application;

[0047] Figure 3 When the inductor is used as an energy storage element, the change of the output voltage at the load end produces an overshoot or undershoot phenomenon, and the charge △Q1 and △Q2 of the part that lags behind the current change;

[0048] Figure 4 A schematic diagram of the structure of a power conversion chip provided by another embodiment of the present application;

[0049] Figure 5 A schematic diagram of the structure of a power conversion chip provided in yet another embodiment of the present application;

[0050] Figure 6 A schematic diagram of the structure of a power conversion chip provided in yet another embodiment of the present application;

[0051] Figure 7 A schematic diagram of the structure of a power conversion chip provided in yet another embodiment of the present application;

[0052] Figure 8 A schematic diagram of the relationship between the output terminal of the first comparator, the output terminal of the second comparator, the first output terminal and the second output terminal of the control unit, and the signal of the driving current output terminal in the power conversion chip provided by another embodiment of the present application;

[0053] Fig. 9 A schematic diagram of the electrical connection relationship of a second energy storage component in a power conversion chip provided in another embodiment of the present application;

[0054] Fig.10 A schematic diagram of the electrical connection relationship of a second energy storage component in a power conversion chip provided in another embodiment of the present application;

[0055] Fig.11 A schematic diagram of the electrical connection relationship of a second energy storage component in a power conversion chip provided in another embodiment of the present application;

[0056] Fig.12 A schematic diagram of voltage variation at a load end in a power conversion chip provided by an embodiment of the present application and a traditional power conversion chip;

[0057] Fig.13 A flowchart of a transient control method provided by one embodiment of the present application. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the embodiments in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0059] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0060] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0061] As described in the background technology section, how to provide stability of the output voltage at the load end has become a research hotspot for those skilled in the art.

[0062] The current solution to this problem focuses on optimizing the power loop control method, which reduces the voltage overshoot and undershoot (i.e., output voltage drop) caused by the sudden change of load transient current by improving the power transient response speed. However, most traditional single control architectures have gradually failed to meet the growing demand for transient current, and new architectures need to be continuously improved to continue to improve the transient response capability of the power supply.

[0063] In view of this, an embodiment of the present application provides a power conversion chip, such as Figure 2 As shown, the power conversion chip 100 includes:

[0064] A driving module 101, used for outputting a driving current controlled by a control signal, wherein a driving current output terminal LX of the driving module 101 is used for connecting to an external first energy storage component 200, and the first energy storage component 200 provides an output voltage to a load terminal Vout, and optionally, the first energy storage component 200 is an inductor;

[0065] The power supply control module 102 is connected to the voltage feedback input terminal FB, and outputs a first control signal to the driving module 101 based on the voltage input to the voltage feedback input terminal FB, so as to adjust the output state of the driving current. The voltage feedback input terminal FB is connected to the load terminal Vout to collect the output voltage of the load terminal Vout.

[0066] The transient adjustment module 103 is connected to the power control module 102 and is used to adjust the voltage of the driving current output terminal LX of the driving module 101 based on the voltage input by the voltage feedback input terminal FB and the first control signal.

[0067] Optionally, in an embodiment of the present application, taking the power conversion chip as a BUCK chip as an example, the first control signal is a pulse width modulation signal, i.e., a PWM signal, i.e., the signal output by the output terminal P3 of the power control module 102 connected to the driving module 101 is a PWM signal, but the present application does not limit this, and it depends on the specific situation. The power conversion chip provided in the embodiment of the present application is described below by taking the first control signal as a PWM signal as an example.

[0068] It should be noted that, as an energy storage element, the inductor has its own inductive characteristics, and the change of the inductor's own current lags behind the change of the load current, that is, the energy provided by the driving module 101 to the load end Vout lags behind the current demand of the load end Vout, which causes the change of the output voltage of the load end Vout, resulting in overshoot or undershoot. The charge amount △Q1 and △Q2 of the lag part are as follows: Figure 3 shown.

[0069] The power conversion chip provided in the embodiment of the present application includes, in addition to the driving module 101 and the power control module 102, a transient adjustment module 103. The transient adjustment module 103 is connected to the power control module 102, and adjusts the voltage of the driving current output terminal LX of the driving module 101 based on the voltage input by the voltage feedback input terminal FB and the first control signal. When the load current changes transiently, the transient adjustment module 103 is used to adjust the voltage of the driving current output terminal LX, so as to alleviate the undershoot or overshoot phenomenon of the output voltage of the load terminal Vout, thereby improving the stability of the output voltage of the load terminal Vout.

[0070] In addition, the power conversion chip provided in the embodiment of the present application sets the transient adjustment module 103 inside the power conversion chip (such as a BUCK chip), so that the transient adjustment module 103 can share the same voltage feedback input terminal FB with the power control module 102, and at the same time, the transient adjustment module 103 and the driving module 101 can share the same first control signal, thereby simplifying the structure of the power conversion chip 100 while utilizing the transient adjustment module 103 to alleviate the undershoot or overshoot phenomenon of the output voltage of the load end Vout and improve the stability of the output voltage of the load end Vout, which is beneficial to reducing the area and cost of the power conversion chip 100.

[0071] In addition, the power conversion chip provided in the embodiment of the present application sets the transient adjustment module 103 inside the power conversion chip (such as a BUCK chip), and enables the transient adjustment module 103 to share the same voltage feedback input terminal FB with the power control module 102, and enables the transient adjustment module 103 and the driving module 101 to share the same first control signal, so that the input signal of the transient adjustment module 103 can better represent the working state of the power conversion chip, so that the regulation effect of the transient adjustment module 103 is better.

[0072] Optionally, in one embodiment of the present application, Figure 4 As shown, the power control module 102 includes an error amplifier unit 1021 and a modulation unit 1022. In this embodiment, the input end of the error amplifier unit 1021 is connected to the voltage feedback input end FB, and is used to amplify the error between the voltage input to the voltage feedback input end FB and the target voltage Vref1 and then output a first voltage signal EA; the modulation unit 1022 is connected to the output end of the error amplifier unit 1021 and the input end of the driving module 101, and is used to output a first control signal according to the first voltage signal EA, and the first control signal is used to control the driving module 101 to adjust the driving current outputted by the driving module 101, so that the driving current outputted by the driving module 101 gradually matches the current demand of the load 400. Specifically, in one embodiment of the present application, the error amplifier unit may be an error amplifier. It should be noted that, in this embodiment, the input end of the error amplifier unit may be directly connected to the voltage feedback input end FB, or may be indirectly connected to the voltage feedback input end FB, and the present application does not limit this, as long as the signal inputted to the input end of the error amplifier unit can represent the voltage of the voltage feedback input end FB.

[0073] Based on the above embodiments, in one embodiment of the present application, the transient adjustment module 103 can be directly electrically connected to the voltage feedback input terminal FB, such as Figure 2 As shown, to obtain the voltage of the load end Vout, it can also be electrically connected to the output end of the error amplification unit 1021, such as Figure 4 As shown, the voltage of the load end Vout is obtained by acquiring the first voltage signal EA outputted from the output end of the error amplifying unit 1021 , and the present application does not limit this, and it depends on the specific situation.

[0074] It should be noted that, in the above embodiment, the power control module 102 first uses the error amplification unit 1021 to amplify the difference between the voltage of the load end Vout and the target voltage Vref1, and then outputs it to the modulation unit 1022 and the transient adjustment module 103. This can improve the adjustment accuracy of the modulation unit 1022 and the transient adjustment module 103, and further improve the stability of the output voltage of the load end Vout.

[0075] Optionally, in one embodiment of the present application, Figure 5 As shown, the power conversion chip 100 also includes: a voltage divider circuit, the voltage divider circuit includes a first resistor R1 and a second resistor R2 connected in series, wherein the first end of the first resistor R1 is connected to the voltage feedback input terminal FB, the second end is connected to the first end of the second resistor R2, and the second end of the second resistor R2 is grounded. In this embodiment, the second end of the first resistor R1 and one end of the second resistor R2 are connected to the input end of the error amplification unit 1021 to avoid burning the error amplification unit 1021 and other devices when the output voltage of the load end Vout is too high, but this application does not limit this, and it depends on the specific situation.

[0076] Based on the above embodiments, in one embodiment of the present application, Figure 6 As shown, the transient adjustment module 103 includes: a comparison unit 1031, a control unit 1032 and a switching unit 1033; wherein the input end of the comparison unit 1031 is connected to the output end of the error amplification unit 1021, and the first voltage signal EA output by the error amplification unit 1021 is input, and is used to output a first signal according to the transient control condition and the first voltage signal EA; the control unit 1032 is connected to the output end of the comparison unit 1031 and the output end of the modulation unit 1022, and outputs a second control signal based on the first signal output by the comparison unit 1031 and the first control signal output by the modulation unit 1022 to control the working state of the switching unit 1033, thereby realizing the adjustment of the voltage of the driving current output terminal LX of the driving module 101; the switching unit 1033 is connected to the second energy storage component 300, and is used to adjust the working state in response to the second control signal to control the charging and discharging state of the second energy storage component 300 and adjust the voltage of the driving current output terminal LX of the driving module 101.

[0077] Optionally, in one embodiment of the present application, the transient control condition includes an overshoot threshold voltage Overshot Vref and an undershoot threshold voltage Undershot Vref, and the first signal includes a first sub-signal and a second sub-signal. In this embodiment, the comparison unit 1031 outputs the first sub-signal to the control unit 1032 when the first voltage signal EA is greater than the overshoot threshold voltage Overshot Vref, so that the control unit 1032 controls the working state of the switching unit 1033, so that the second energy storage component 300 connected to the switching unit 1033 is charged, the output voltage of the load end Vout is reduced, and the stability of the output voltage of the load end Vout is improved; the comparison unit 1031 outputs the first sub-signal to the control unit 1032 when the first voltage signal EA is less than the undershoot threshold voltage Undershot Vref. Vref, a second sub-signal is output to the control unit 1032, so that the control unit 1032 controls the working state of the switching unit 1033 based on the second sub-signal and the first control signal output by the modulation unit 1022, thereby controlling the discharge state of the second energy storage component 300 connected to the switching unit 1033, increasing the output voltage of the load end Vout, and improving the stability of the output voltage of the load end Vout.

[0078] It should be noted that, in this embodiment, the transient control conditions include an overshoot threshold voltage OvershotVref and an undershoot threshold voltage Undershot Vref, so that the power conversion chip can not only adjust the phenomenon of a sudden increase in the output voltage of the load end Vout, but also adjust the phenomenon of a sudden drop in the output voltage of the load end Vout, and control the output voltage of the load end Vout within a certain range of change, thereby further improving the stability of the output voltage of the load end Vout.

[0079] Optionally, in one embodiment of the present application, Figure 7 As shown, the second control signal includes a first sub-control signal Ctrl1 and a second sub-control signal Ctrl2, and the control unit 1032 has a first output terminal and a second output terminal, wherein the first output terminal is used to output the first sub-control signal Ctrl1, and the second output terminal is used to output the second sub-control signal Ctrl2. In this embodiment, the switching unit 1033 includes:

[0080] A first control switch component 10331, wherein a control end of the first control switch component 10331 is connected to a first output end of the control unit 1032, and controls an electrical connection state of a first end of the second energy storage component 300 based on a first sub-control signal Ctrl1 outputted from the first output end;

[0081] The second control switch component 10332, wherein the control end of the second control switch component 10332 is connected to the second output end of the control unit 1032, controls the electrical connection state of the second end of the second energy storage component 300 based on the second sub-control signal Ctrl2 outputted from the second output end.

[0082] It should be noted that, in this embodiment, the electrical connection state of the first end of the second energy storage component 300 and the electrical connection state of the second end thereof determine the charge and discharge state of the second energy storage component 300, that is, in this embodiment, the first control switch component 10331 and the second control switch component 10332 jointly determine the charge and discharge state of the second energy storage component 300.

[0083] On the basis of the above embodiments, in one embodiment of the present application, the first control switch component 10331 includes a plurality of sub-switches, the plurality of sub-switches include: a first sub-switch, a second sub-switch and a third sub-switch, the control end of each of the sub-switches in the first control switch component 10331 is connected to the first output end of the control unit 1032, the first end of each of the sub-switches is electrically connected to the first end of the second energy storage component 300, the second end of the first sub-switch is connected to the voltage feedback input end FB, the second end of the second sub-switch is connected to the drive current output end LX, and the second end of the third sub-switch is suspended. It should be noted that in this embodiment, at the same time, only one of the plurality of sub-switches in the first control switch component 10331 is in the on state, and the other sub-switches are in the off state.

[0084] For example, if the first sub-control signal Ctrl1 outputted from the first output terminal of the control unit 1032 controls the first sub-switch in the first control switch component 10331 to be turned on, the second sub-switch and the third sub-switch are in the disconnected state, and the first end of the second energy storage component 300 is electrically connected to the voltage feedback input terminal FB; if the first sub-control signal Ctrl1 outputted from the first output terminal of the control unit 1032 controls the second sub-switch in the first control switch component 10331 to be turned on, the first sub-switch and the third sub-switch are in the disconnected state, and the first end of the second energy storage component 300 is electrically connected to the drive current output terminal LX; if the first sub-control signal Ctrl1 outputted from the first output terminal of the control unit 1032 controls the third sub-switch in the first control switch component 10331 to be turned on, the first sub-switch and the second sub-switch are disconnected, and the first end of the second energy storage component 300 is suspended and not electrically connected to other structures.

[0085] Optionally, the second control switch component 10332 includes two sub-switches, a fourth sub-switch and a fifth sub-switch, the control end of each sub-switch in the second control switch component 10332 is connected to the second output end of the control unit 1032, the first end of each sub-switch in the second control switch component 10332 is connected to the second end of the second energy storage component 300, the second end of the fourth sub-switch is grounded, and the second end of the fifth sub-switch is connected to the voltage feedback input terminal FB. It should be noted that in this embodiment, at the same time, only one of the multiple sub-switches in the second control switch component 10332 is in the on state, and the other sub-switches are in the off state.

[0086] For example, when the second sub-control signal Ctrl2 outputted from the second output terminal of the control unit 1032 controls the fourth sub-switch to be turned on, the fifth sub-switch is turned off, and the second end of the second energy storage component 300 is grounded; when the second sub-control signal Ctrl2 outputted from the second output terminal of the control unit 1032 controls the fifth sub-switch to be turned on, the fourth sub-switch is turned off, and the second end of the second energy storage component 300 is electrically connected to the voltage feedback input terminal FB.

[0087] It should be noted that, in the above embodiment, if the current required by the load 400 suddenly decreases, the output voltage of the load terminal Vout increases instantaneously, the first sub-control signal Ctrl1 output by the control unit 1032 controls the first sub-switch to be turned on, the second sub-control signal Ctrl2 controls the fourth sub-switch to be turned on, the first end of the second energy storage component 300 is electrically connected to the voltage feedback input terminal FB (that is, connected to the load terminal Vout), and the second end is grounded, such as Figure 4 As shown, the voltage inputted by the voltage feedback input terminal FB charges the second energy storage component 300 to reduce the output voltage of the load terminal Vout. If the current required by the load suddenly increases, the voltage of the load terminal Vout decreases instantly, the first sub-control signal outputted by the control unit 1032 controls the second sub-switch to be turned on, the second sub-control signal controls the fifth sub-switch to be turned on, the first end of the second energy storage component 300 is electrically connected to the drive current output terminal LX, and the second end is electrically connected to the voltage feedback input terminal FB (that is, connected to the load terminal Vout), as shown. Figure 5 As shown, the second energy storage component 300 discharges to increase the voltage of the drive current output terminal Vout, thereby increasing the output voltage of the load terminal Vout.

[0088] If the first sub-control signal output by the control unit 1032 controls the third sub-switch to be turned on, and the second sub-control signal controls the fifth sub-switch to be turned on, the first end of the second energy storage component 300 is suspended, and the second end is electrically connected to the voltage feedback input terminal FB (that is, connected to the load terminal Vout), as Figure 6 As shown, at this time, the second energy storage component 300 is neither charged nor discharged.

[0089] Optionally, in one embodiment of the present application, the first control switch component 10331 further includes a sixth sub-switch, the control end of the sixth sub-switch is electrically connected to the first output end of the control unit 1032, the first end is connected to the first end of the second energy storage component 300, and the second end is grounded, so that when there is unused electricity in the second energy storage component 300, the sixth sub-control switch is turned on, so that the electricity in the second energy storage component 300 is leaked. Optionally, in one embodiment of the present application, the second end of the sixth sub-switch is grounded through the third resistor R3, so that when there is unused electricity in the second energy storage component 300, the sixth sub-control switch is turned on, so that the electricity in the second energy storage component 300 is leaked through the third resistor R3, but the present application does not limit this, and it depends on the specific situation.

[0090] Optionally, in one embodiment of the present application, the first control switch component 10331 may include multiple control switches, and the functions of the first sub-switch, the second sub-switch, the third sub-switch and the sixth sub-switch are respectively realized through different control switches. The functions of the first sub-switch, the second sub-switch, the third sub-switch and the sixth sub-switch may also be realized through a single-pole multi-throw switch.

[0091] Specifically, in one embodiment of the present application, when the first control switch component 10331 is a single-pole multi-throw switch, the control end of the single-pole multi-throw switch is electrically connected to the first output end of the control unit 1032, the first end is connected to the first end of the second energy storage component 300, the first second end of the plurality of second ends is connected to the voltage feedback input end FB, the second second end is connected to the drive current output end LX, the third second end is suspended, and the fourth second end is grounded. Figure 7 As shown, when the first control switch component 10331 includes a first sub-switch, a second sub-switch, a third sub-switch and a sixth sub-switch, the path between the first end of the single-pole multi-throw switch and port 1 corresponds to the first sub-switch, the path between the first end of the single-pole multi-throw switch and port 2 corresponds to the second sub-switch, the path between the first end of the single-pole multi-throw switch and port 3 corresponds to the third sub-switch, and the path between the first end of the single-pole multi-throw switch and port 4 corresponds to the sixth sub-switch.

[0092] Similarly, the second control switch component 10332 may include multiple control switches, and the functions of the fourth sub-switch and the fifth sub-switch may be respectively realized through different control switches, or the functions of the fourth sub-switch and the fifth sub-switch may be realized through a single-pole double-throw switch.

[0093] Specifically, in one embodiment of the present application, when the second control switch component 10332 is a single-pole double-throw switch, the control end of the single-pole double-throw switch is electrically connected to the second output end of the control unit 1032, the first end is connected to the second end of the second energy storage component 300, the first second end of the plurality of second ends is connected to the voltage feedback input end FB, and the second second end is grounded. Figure 7 As shown, when the second control switch component 10332 includes a fourth sub-switch and a fifth sub-switch, the path between the first end of the single-pole double-throw switch and port 1 corresponds to the fourth sub-switch, and the path between the first end of the single-pole double-throw switch and port 2 corresponds to the fifth sub-switch.

[0094] The power conversion chip provided in the embodiment of the present application is described below by taking the first control switch component 10331 as a single-pole multi-throw switch and the second control switch component 10332 as a single-pole multi-throw switch as an example.

[0095] Based on any of the above embodiments, in one embodiment of the present application, continue as follows Figure 7 As shown, the comparison unit 1031 includes:

[0096] A first comparator, wherein one input terminal of the first comparator is connected to the output terminal of the error amplifying unit 1021 in the power control module 102, and the other input terminal is used to input the overshoot threshold voltage Overshot Vref, and outputs a first sub-signal based on the first voltage signal EA output by the error amplifying unit 1021 and the overshoot threshold voltage Overshot Vref;

[0097] A second comparator, wherein one input end of the second comparator is connected to the output end of the error amplifying unit 1021 in the power control module 102, and the other input end is input with the undershoot threshold voltage Undershot Vref, and a second sub-signal is output based on the first voltage signal EA output by the error amplifying unit 1021 and the undershoot threshold voltage Undershot Vref.

[0098] Optionally, in one embodiment of the present application, the first comparator is a transient comparator, and the second comparator is a transient comparator, but the present application does not limit this and it depends on the specific circumstances.

[0099] In this embodiment, the control unit 1032 is connected to the output ends of the first comparator and the second comparator, and is used to output a second control signal based on the first sub-signal, the second sub-signal and the first control signal to control the working state of the switching unit 1033 to achieve the regulation of the voltage of the driving current output terminal LX of the driving module 101.

[0100] Specifically, in one embodiment of the present application, the first voltage signal EA input to one input terminal of the first comparator is greater than the overshoot threshold voltage Overshot Vref set at the other input terminal thereof, indicating that the output voltage of the load terminal Vout has an overshoot phenomenon, and the overshoot amplitude is large. The control unit 1032 controls the second energy storage component 300 to charge based on the signals output by the first comparator and the second comparator, absorbs the energy of the load terminal Vout, and reduces the output voltage of the load terminal Vout;

[0101] The first voltage signal EA input to one input terminal of the second comparator is greater than the undershoot threshold voltage Undershot Vref set at the other output terminal thereof, indicating that the voltage of the load terminal Vout has a drop phenomenon (i.e., an undershoot phenomenon), and the drop amplitude is large. The control unit 1032 controls the second energy storage component 300 to discharge based on the signals output by the first comparator and the second comparator, provides energy to the load terminal Vout, and increases the output voltage of the load terminal Vout.

[0102] Optionally, based on any of the above embodiments, in an embodiment of the present application, the control unit 1032 includes: a state machine 10321 and a logic subunit 10322, wherein the logic subunit 10322 performs calculations based on the second sub-signal and the first control signal, and outputs a third sub-signal; the state machine 10321 outputs a second control signal based on the first sub-signal and the third sub-signal to control the working state of the switching unit 1033, so as to output a second control signal based on the first signal and the first control signal to control the working state of the switching unit 1033.

[0103] On the basis of any of the above embodiments, in one embodiment of the present application, the driving module 101 includes: a driving unit 1011, which is used to receive the first control signal and output a third control signal; a first MOS tube M1 and a second MOS tube M2 connected in series between a first power supply terminal VIN and a second power supply terminal GND, wherein the voltage of the first power supply terminal VIN is greater than the voltage of the second power supply terminal GND. Specifically, in this embodiment, the control end of the first MOS tube M1 is connected to the output end of the driving unit 1011, receives the third control signal, and the first end is connected to the first power supply terminal VIN; the control end of the second MOS tube M2 is connected to the output end of the driving unit 1011, receives the third control signal, and the second end is connected to the second power supply terminal GND; the second end of the first MOS tube M1 is connected to the first end of the second MOS tube M2, as the driving current output terminal LX of the driving module 101; the first control signal is used to control the on and off states of the first MOS tube M1 and the second MOS tube M2.

[0104] Optionally, in one embodiment of the present application, the first control signal is a PWM signal, the first MOS tube is a P-type MOS tube, and the second MOS tube is an N-type MOS tube; in this embodiment, when the first control signal is at a high level, the first MOS tube is turned off, the second MOS tube is turned on, and the path between the current output end and the second power supply end is turned on; when the first control signal is at a low level, the first MOS tube is turned on, the second MOS tube is turned off, and the path between the current output end and the first power supply end is turned on, so as to adjust the driving current outputted by the driving current output end LX by alternatingly turning on the first MOS tube and the second MOS tube.

[0105] The power conversion chip provided in the embodiments of the present application is described below in conjunction with specific embodiments.

[0106] like Figure 7 and Figure 8As shown, optionally, in this embodiment, if the load terminal Vout operates normally without transient load changes, or if there is a transient load change but the difference between the voltage of the load terminal Vout and the target voltage Vref1 is less than the overshoot threshold voltage Overshot Vref1 and less than the undershoot threshold voltage Undershot Vref1, the first comparator and the second comparator are not triggered, the first comparator outputs a low level 0, and the second comparator outputs a low level 0. Regardless of whether the signal output by the driving current output terminal LX is a high level or a low level, the first sub-control signal Ctrl1 output by the first output terminal of the state machine 10321 controls the second end of the first control switch component to be electrically connected to port 3, and the second sub-control signal Ctrl2 output by the second output terminal of the state machine 10321 controls the second end of the second control switch component to be electrically connected to port 2, so that the first end of the second energy storage component 300 is suspended, as shown in FIG. Fig. 9 As shown, the second energy storage component 300 does not store charge;

[0107] When the transient current of the load terminal Vout decreases, the output voltage of the load terminal Vout increases, until the first voltage signal is greater than the overshoot threshold voltage, the first comparator is triggered, the first comparator outputs a high level 1, and the second comparator outputs a low level 0. At this time, regardless of whether the signal output by the driving current output terminal LX is a high level or a low level, the first sub-control signal Ctrl1 output by the first output terminal of the state machine 10321 controls the second end of the first control switch component to be electrically connected to port 1, and the second sub-control signal Ctrl2 output by the second output terminal of the state machine 10321 controls the second end of the second control switch component to be electrically connected to port 1, so that the first end of the second energy storage component 300 is electrically connected to the load terminal Vout (or the voltage feedback input terminal FB), and the second end is grounded, such as Fig.10 As shown, the second energy storage component 300 is used to absorb the charge of the load end Vout, increase the instantaneous charge storage capacity, and reduce the output voltage of the load end Vout, thereby effectively alleviating the voltage overshoot phenomenon (ie, voltage overshoot phenomenon);

[0108] When the transient current reduction event of the load terminal Vout ends, the output voltage of the load terminal Vout is restored to the default value through the internal loop control adjustment of the power conversion chip, and the first comparator and the second comparator are restored to the default value. At this time, the first comparator outputs a low level 0, and the second comparator outputs a low level 0. Regardless of whether the signal output by the driving current output terminal LX is a high level or a low level, the first sub-control signal Ctrl1 output by the first output terminal of the state machine 10321 controls the second end of the first control switch component to be electrically connected to port 3, and the second sub-control signal Ctrl2 output by the second output terminal of the state machine 10321 controls the second end of the second control switch component to be electrically connected to port 2, so that the first end of the second energy storage component 300 is suspended, and the second end remains unchanged and is still electrically connected to the load terminal Vou, as shown in FIG. Fig. 9 As shown, the charging path of the second energy storage assembly 300 is cut off;

[0109] When the transient current of the load terminal Vout decreases, the output voltage of the load terminal Vout decreases until the first voltage signal is greater than the undershoot threshold voltage, and the second comparator is triggered. At this time, the first comparator outputs a low level 0, the second comparator outputs a high level 1, and the driving current output terminal LX outputs a low level 0 (at this time, the first control signal PMW is a low level, indicating that the first MOS tube is in the off state), the first sub-control signal Ctrl1 output by the first output terminal of the state machine 10321 controls the second end of the first control switch component to be electrically connected to port 2, and the second sub-control signal Ctrl2 output by the second output terminal controls the second end of the second control switch component to be electrically connected to port 2, so that the first end of the second energy storage component is electrically connected to the driving current output terminal LX, and the second end is electrically connected to the load terminal Vout, as shown in FIG. Fig.11 As shown, the second energy storage component 300 releases charge to the driving current output terminal LX, and the charge stored in the second energy storage component 300 is supplemented to the load terminal Vout through the first energy storage component 200, reducing the voltage drop amplitude of the load terminal Vout, thereby increasing the output voltage of the load terminal Vout.

[0110] It should be noted that, in order to avoid the conduction of the path between the second energy storage component 300 and the first power supply terminal VIN, the time when the second energy storage component 300 is in the third state needs to be staggered with the conduction time of the first MOS tube M1 in the driving module 101. Therefore, in this embodiment, the control unit 1032 also includes a logic subunit 10322 located between the second comparator and the state machine 10321. Optionally, the logic subunit 10322 is an AND gate, so that the first control signal output by the power control module 102 and the second sub-signal output by the second comparator are connected to the state machine 10321 through the AND gate. When the constant conduction time of the first MOS tube M1 is reached, the second energy storage component 300 is switched to the third state, so that the second energy storage component 300 continues to supplement the charge to the load terminal Vout, meets the current demand when the transient current increases, and reduces the voltage drop. However, the present application does not limit this. In other embodiments of the present application, the control unit may further add control logic in the state machine 10321 so that the time when the second energy storage component 300 is in the third state is staggered with the turn-on time of the first MOS tube M1 in the driving module 101, or add a third control switch component in the second energy storage component 300 so that the time when the second energy storage component 300 is in the third state is staggered with the turn-on time of the first MOS tube M1 in the driving module 101, depending on the specific circumstances.

[0111] like Fig.12 As shown, Fig.12 The voltage variation curve of the load end during the operation of the power conversion chip is shown, wherein the red line represents the voltage variation curve of the load end during the operation of the power conversion chip provided by the embodiment of the present application, and the green line represents the voltage variation curve of the load end of the traditional power conversion chip. Fig.12 It can be seen from the figure that in the power conversion chip provided in the embodiment of the present application, the voltage variation at the load end is small, and the voltage overshoot phenomenon can be optimized. Fig.12 Compared with the voltage change at the load end in a traditional electronic device, the voltage overshoot amplitude at the load end of the power conversion chip provided in the embodiment of the present application can be reduced by 15.6mV.

[0112] Accordingly, the embodiment of the present application further provides an electronic device, Figure 2As shown, the electronic device includes: a power conversion chip 100, a first energy storage component 200 and a second energy storage component 300; wherein the input end of the first energy storage component 200 is connected to the driving current output terminal LX of the power conversion chip 100, and the output end is connected to the load terminal Vout, and the load terminal Vout is also connected to the voltage feedback input terminal FB of the power conversion chip 100; one end of the second energy storage component 300 is connected to the first signal path terminal P1 of the power conversion chip 100, and the other end is connected to the second signal path terminal P2 of the power conversion chip 100. In this embodiment, the power conversion chip 100 is used to control the driving current output from the current output terminal LX based on the output voltage of the load terminal Vout, and the driving current is provided by the first energy storage component 200 to the load terminal Vout. The charging and discharging state of the second energy storage component 300 is controlled based on the output voltage of the load terminal Vout and the output state of the driving current, so as to achieve the voltage regulation of the driving current output terminal LX.

[0113] Optionally, in an embodiment of the present application, the first energy storage component 200 includes a first inductor L1, so as to transmit the driving current output by the driving current output terminal LX to the load terminal Vout through the first inductor, and provide an output voltage to the load terminal Vout.

[0114] Optionally, in one embodiment of the present application, the power conversion chip may be the power conversion chip provided in any of the above embodiments. Since the relevant contents of the power conversion chip have been described in detail in the above embodiments, the present application will not repeat them here. Optionally, in one embodiment of the present application, the first signal path terminal P1 and the second signal path terminal P2 are connected to the transient adjustment module 1033 in the power conversion chip 100. Specifically, in one embodiment of the present application, Figure 7 As shown, the first signal path end P1 is electrically connected to the first end of the first control switch component 10331 in the transient adjustment module 1033 , and the second signal path end P2 is electrically connected to the first end of the second control switch component 10332 in the transient adjustment module 1033 .

[0115] Optionally, in one embodiment of the present application, continue as Figure 7 As shown, the second energy storage component 300 includes a capacitor Ces, and both ends of the capacitor Ces are electrically connected to the charge and discharge control path inside the power conversion chip 100. In this embodiment, the power conversion chip 100 includes a transient adjustment module 103, which is used to adjust the connection state of the charge and discharge control path based on the voltage of the voltage feedback input terminal FB and the control signal of the drive current (i.e., the first control signal) to control the charge and discharge state of the second energy storage component.

[0116] On the basis of the above embodiments, in one embodiment of the present application, the second energy storage component 300 further includes a fourth resistor Res connected in series with the capacitor, so as to utilize the fourth resistor Res to control the charge and discharge rate of the second energy storage component 300, thereby preventing the capacitor Ces from being burned due to the charge and discharge rate of the second energy storage component 300 being too high, and at the same time reducing the electromagnetic interference generated during the charge and discharge process of the second energy storage component 300, thereby improving the performance of the electronic device.

[0117] Optionally, in one embodiment of the present application, continue as Figure 7 As shown, the charge and discharge control loop includes a switching unit 1033, and the switching unit 1033 includes a first control switch component 10331 and a second control switch component 10332. In this embodiment, the power conversion chip 100 adjusts the connection state of the first control switch component 10331 and the second control component 10332 in the switching unit 1033 based on the voltage of the voltage feedback input terminal FB and the control signal of the drive current (i.e., the first control signal) to control the charge and discharge state of the second energy storage component 300.

[0118] Since the power conversion chip controls the connection state of the first control switch component and the second control switch component to control the charge and discharge state of the second energy storage component, the relevant contents have been described in the above embodiments and will not be repeated here.

[0119] In addition, an embodiment of the present application further provides a transient control method, which is applied to an electronic device, wherein the electronic device includes a power conversion chip, a first energy storage component, and a second energy storage component. In this embodiment, the transient control method includes:

[0120] Based on the voltage at the load end, the driving current outputted from the driving current output end of the power conversion chip is controlled, the driving current output end of the driving module is used to be connected to an external first energy storage component, the first energy storage component provides an output voltage to the load end, and, based on the voltage at the load end and the output state of the driving current, the charging and discharging state of the second energy storage component is controlled to achieve the regulation of the voltage at the driving current output end.

[0121] It should be noted that in the embodiments of the present application, the power conversion chip may be the power conversion chip provided in any of the above embodiments. Since the relevant contents of the power conversion chip have been described in detail in the above embodiments, they will not be repeated here.

[0122] Optionally, in one embodiment of the present application, the power conversion chip includes: a driving module, a power control module and a transient adjustment module, wherein the driving module is used to output a driving current controlled by a control signal, and the driving current output terminal of the driving module is used to be connected to an external first energy storage component, and the first energy storage component provides an output voltage to the load terminal; the power control module is used to be connected to the voltage feedback input terminal, and based on the voltage input to the voltage feedback input terminal, output a first control signal to the driving module to adjust the output state of the driving current, and the voltage feedback input terminal is used to be connected to the load terminal to collect the output voltage of the load terminal; the transient adjustment module is used to be connected to the power control module, and based on the voltage input to the voltage feedback input terminal and the first control signal, adjust the voltage of the driving current output terminal of the driving module. It should be noted that in this embodiment, the first control signal represents the output state of the driving current.

[0123] On the basis of the above embodiments, in one embodiment of the present application, the power conversion chip includes a first MOS tube and a second MOS tube connected in series between a first power supply terminal and a second power supply terminal, the voltage of the first power supply terminal is greater than the voltage of the second power supply terminal, and the second end of the first MOS tube is connected to the first end of the second MOS tube as the driving current output end of the driving module. In this embodiment, the method further includes:

[0124] If the voltage at the load end is higher than the voltage at the drive current output end, and the difference between the voltage at the load end and the target voltage is greater than the overshoot threshold voltage, the second energy storage component is controlled to charge to reduce the voltage at the load end;

[0125] If the voltage at the load end is lower than the voltage at the drive current output end, the difference between the voltage at the load end and the target voltage is greater than the undershoot threshold voltage, and the first MOS tube is in a disconnected state, the second energy storage component is controlled to discharge to increase the voltage at the drive current output end.

[0126] It should be noted that, in the above embodiment, if the voltage at the load end is higher than the voltage at the drive current output end, and the difference between the voltage at the load end and the target voltage is greater than the overshoot threshold voltage, regardless of whether the first MOS tube is in the on state or the off state, the second energy storage component is controlled to charge to reduce the voltage at the load end.

[0127] Optionally, in one embodiment of the present application, the method further includes: if the voltage at the load end is lower than the voltage at the drive current output end, the difference between the voltage at the load end and the target voltage is greater than the undershoot threshold voltage, but the first MOS tube is in an on state, one end of the second energy storage component is controlled to be suspended, and the second energy storage component is neither charged nor discharged.

[0128] Optionally, in one embodiment of the present application, the method further includes: if the load end operates stably, that is, the difference between the voltage at the load end and the target voltage is not greater than the overshoot threshold voltage, nor is it greater than the undershoot threshold voltage, controlling one end of the second energy storage component to be suspended, and the second energy storage component is neither charged nor discharged.

[0129] The transient control method provided in the embodiment of the present application is described below in conjunction with a specific embodiment.

[0130] like Figure 7 and Fig.13 As shown, the transient control method includes:

[0131] Monitor the output voltage of the load end Vout;

[0132] If the current required by the load terminal Vout decays, the output voltage of the load terminal Vout overshoots. When the voltage of the load terminal Vout is higher than the voltage of the drive current output terminal LX and the difference between the voltage of the load terminal Vout and the target voltage Vref1 is greater than the overshoot threshold voltage Overshot Vref, the power conversion chip 100 controls the second energy storage component 300 to charge to reduce the voltage of the load terminal Vout. Specifically, the power conversion chip 100 controls the second end of the first control switch component 10331 in its switching unit 1033 to be electrically connected to port 1, and the second end of the second control switch component 10332 is electrically connected to port 1. The electrical connection relationship of the second energy storage component 300 is as follows: Fig.10 As shown,

[0133] When the transient current reduction event of the load end Vout ends, the output voltage of the load end Vout returns to the default value, and the power conversion chip 100 cuts off the charging path of the second energy storage component 300. Specifically, the control unit 1032 in the power conversion chip 100 controls the second end of the first control switch component 10331 in the switching unit 1033 to be electrically connected to port 3, and the second end of the second control switch component 10332 is electrically connected to port 2. The first end of the second energy storage component 300 is suspended, and the second end is electrically connected to the voltage feedback input terminal FB of the power conversion chip 100. The circuit connection relationship is as follows: Fig. 9 As shown, the charging path of the second energy storage component 300 is cut off;

[0134] When the transient current of the load terminal Vout jumps, the output voltage of the load terminal Vout undershoots. When the voltage of the load terminal Vout is lower than the voltage of the drive current output terminal LX and the difference between the voltage of the load terminal Vout and the target voltage Vref1 is greater than the undershoot threshold voltage Undershot Vref, and the upper tube M1 in the power conversion chip 100 is in a disconnected state, the power conversion chip 100 controls the second energy storage component 300 to discharge to increase the voltage of the load terminal Vout until the output voltage of the load terminal Vout is adjusted to a default value. Specifically, the control unit 1032 of the power conversion chip 100 controls the second end of the first control switch component 10331 in its switching unit 1033 to be electrically connected to port 2, and the second end of the second control switch component 10332 is electrically connected to port 2. The electrical connection relationship of the second energy storage component 300 is as follows: Fig.11 As shown, the second energy storage component 300 releases the charge to the driving current output terminal LX, which is transmitted to the load terminal Vout through the first energy storage component 200, thereby increasing the voltage of the load terminal Vout and reducing the voltage drop amplitude of the load terminal Vout.

[0135] It should be noted that, in the above embodiment, if the second energy storage component 300 is discharged so that the load terminal Vout is restored to the default value, there is still some unreleased charge in the second energy storage component, and the power conversion chip 100 controls the first end of the second energy storage component 300 to be grounded, and the second end is connected to the load terminal Vout, and the residual charge in the second energy storage component 300 is released by grounding the first end of the second energy storage component 300. Specifically, the control unit 1032 in the power conversion chip 100 controls the second end of the first control switch component 10331 in its switching unit 1033 to be electrically connected to port 4, and the second end of the second control switch component 10332 to be electrically connected to port 2. The electrical connection relationship of the second energy storage component 300 is as follows: Fig.10 As shown, the excess charge in the second energy storage component 300 is released to the ground terminal.

[0136] It should also be noted that, in the above embodiment, if the voltage of the load terminal 300 is higher than the voltage of the drive current output terminal LX and the difference between the voltage of the load terminal Vout and the target voltage Vref1 is greater than the overshoot threshold voltage Overshot Vref, the voltage of the load terminal Vout is used to make the second energy storage component 300 charge after completion, the voltage of the load terminal 300 is still higher than the voltage of the drive current output terminal LX and the difference between the voltage of the load terminal Vout and the target voltage Vref1 is greater than the overshoot threshold voltage Overshot Vref, the power conversion chip 100 can also control the first end of the second energy storage component 300 to be grounded, and the second end to be connected to the load terminal Vout, and the residual charge of the load terminal Vout is released by grounding the first end of the second energy storage component 300. Specifically, the control unit 1032 in the power conversion chip 100 controls the second end of the first control switch component 10331 in its switching unit 1033 to be electrically connected to port 4, and the second end of the second control switch component 10332 to be electrically connected to port 2, and the electrical connection relationship of the second energy storage component 300 is as follows: Fig.10 As shown, the excess charge in the output voltage of the load end Vout is released.

[0137] In summary, the power conversion chip, electronic device and transient control method provided in the embodiments of the present application can adjust the voltage of the driving current output terminal of the power conversion chip based on the voltage input to the voltage feedback input terminal of the power conversion chip and the output state of the driving current. Therefore, when the load current changes transiently, the voltage of the driving current output terminal is adjusted by the charging and discharging state of the second energy storage component through the through hole, thereby alleviating the undershoot or overshoot phenomenon of the output voltage at the load end and improving the stability of the output voltage at the load end.

[0138] Moreover, the power conversion chip, electronic device and transient control method provided in the embodiments of the present application set the transient adjustment module 103 inside the power conversion chip (such as a BUCK chip), so that the transient adjustment module can share the same voltage feedback input terminal with the power control module, and at the same time, the transient adjustment module and the driving module can share the same first control signal. In this way, while utilizing the transient adjustment module to alleviate the undershoot or overshoot phenomenon of the output voltage at the load end and improve the stability of the output voltage at the load end, the structure of the power conversion chip is simplified, which is beneficial to reducing the area and cost of the power conversion chip.

[0139] In this specification, each embodiment is described in a progressive, parallel, or progressive and parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0140] It should be noted that, in the description of the present application, it should be understood that the descriptions of the drawings and embodiments are illustrative rather than restrictive.

[0141] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0142] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power conversion chip, comprising: A driving module, used for outputting a driving current controlled by a control signal, wherein a driving current output terminal of the driving module is used for connecting to an external first energy storage component, and the first energy storage component provides an output voltage to a load terminal; A power supply control module, connected to a voltage feedback input terminal, outputting a first control signal to the driving module based on a voltage input to the voltage feedback input terminal to adjust an output state of the driving current, wherein the voltage feedback input terminal is connected to a load terminal to collect an output voltage of the load terminal; The transient adjustment module is connected to the power control module and is used to adjust the voltage of the driving current output terminal of the driving module based on the voltage input to the voltage feedback input terminal and the first control signal.

2. The power conversion chip according to claim 1, wherein the power control module comprises an error amplification unit and a modulation unit, wherein the input end of the error amplification unit is connected to the voltage feedback input end, and is used to amplify the error between the voltage input to the voltage feedback input end and the target voltage and then output a first voltage signal; The modulation unit is connected to the output end of the error amplification unit and the input end of the driving module, and is used to output a first control signal according to the first voltage signal; The transient adjustment module includes: a comparison unit, a control unit and a switching unit; The input end of the comparison unit is connected to the output end of the error amplification unit, and inputs the first voltage signal output by the error amplification unit, and is used to output a first signal according to the transient control condition and the first voltage signal; The control unit is connected to the output end of the comparison unit and the output end of the modulation unit, and outputs a second control signal based on the first signal output by the comparison unit and the first control signal output by the modulation unit to control the working state of the switching unit to achieve the adjustment of the voltage of the driving current output end of the driving module; The switching unit is connected to the second energy storage component and is used to adjust the working state in response to the second control signal to control the charging and discharging state of the second energy storage component and adjust the voltage of the driving current output terminal of the driving module.

3. The power conversion chip according to claim 2, wherein the second control signal comprises a first sub-control signal and a second sub-control signal, and the control unit has a first output terminal and a second output terminal, wherein: The first output terminal is used to output the first sub-control signal, and the second output terminal is used to output the second sub-control signal; The switching unit comprises: a first control switch component, wherein a control end of the first control switch component is connected to a first output end of the control unit, and controls an electrical connection state of a first end of the second energy storage component based on a first sub-control signal outputted from the first output end; a second control switch component, wherein a control end of the second control switch component is connected to a second output end of the control unit, and controls an electrical connection state of a second end of the second energy storage component based on a second sub-control signal outputted from the second output end; The electrical connection state of the first end and the electrical connection state of the second end of the second energy storage component determine the charge and discharge state of the second energy storage component.

4. The power conversion chip according to claim 3, wherein the first control switch component comprises a plurality of sub-switches, and the plurality of sub-switches comprises: a first sub-switch, a second sub-switch and a third sub-switch, wherein the control end of each sub-switch is connected to the first output end of the control unit, the first end of each sub-switch is electrically connected to the first end of the second energy storage component, the second end of the first sub-switch is connected to the voltage feedback input end, the second end of the second sub-switch is connected to the drive current output end, and the second end of the third sub-switch is suspended; The second control switch component includes two sub-switches, a fourth sub-switch and a fifth sub-switch. The control end of each sub-switch in the second control switch component is connected to the second output end of the control unit, the first end of each sub-switch in the second control switch component is connected to the second end of the second energy storage component, the second end of the fourth sub-switch is grounded, and the second end of the fifth sub-switch is connected to the voltage feedback input end.

5. The power conversion chip according to claim 2, wherein the comparison unit comprises: A first comparator, wherein one input terminal of the first comparator is connected to the output terminal of the error amplifying unit of the power control module, the other input terminal is used to input an overshoot threshold voltage, and outputs a first sub-signal based on the first voltage signal output by the error amplifying unit and the overshoot threshold voltage; A second comparator, wherein one input terminal of the second comparator is connected to the output terminal of the error amplifying unit of the power control module, the other input terminal is input with the undershoot threshold voltage, and the second comparator outputs a second sub-signal based on the first voltage signal output by the error amplifying unit and the undershoot threshold voltage; The control unit is connected to the output ends of the first comparator and the second comparator, and is used to output a second control signal based on the first sub-signal, the second sub-signal and the first control signal to control the working state of the switching unit to achieve voltage regulation of the driving current output end of the driving module.

6. The power conversion chip according to claim 5, wherein the control unit comprises: A state machine and a logic subunit; wherein the logic subunit performs an AND operation based on the second sub-signal and the first control signal to output a third sub-signal; The state machine outputs a second control signal based on the first sub-signal and the third sub-signal to control the working state of the switching unit.

7. The power conversion chip according to claim 6, wherein the driving module comprises: A driving unit, configured to receive the first control signal and output a third control signal; A first MOS transistor and a second MOS transistor connected in series between a first power supply terminal and a second power supply terminal, wherein a voltage of the first power supply terminal is greater than a voltage of the second power supply terminal; Wherein, the control end of the first MOS tube is connected to the output end of the driving unit, receives the third control signal, and the first end is connected to the first power supply end; The control end of the second MOS tube is connected to the output end of the driving unit to receive the third control signal, and the second end is connected to the second power supply end; The second end of the first MOS tube is connected to the first end of the second MOS tube as a driving current output end of the driving module; The first control signal is used to control the on and off states of the first MOS transistor and the second MOS transistor.

8. An electronic device comprising: A power conversion chip, a first energy storage component and a second energy storage component; wherein the input end of the first energy storage component is connected to the drive current output end of the power conversion chip, the output end is connected to the load end, and the load end is also connected to the voltage feedback input end of the power conversion chip; one end of the second energy storage component is connected to the first signal path end of the power conversion chip, and the other end is connected to the second signal path end of the power conversion chip; The power conversion chip is used to control the driving current output by the current output end based on the voltage at the load end. The driving current is provided by the first energy storage component to the load end with an output voltage, and based on the voltage at the load end and the output state of the driving current, the charging and discharging state of the second energy storage component is controlled to achieve the regulation of the voltage at the driving current output end.

9. According to the electronic device of claim 8, the second energy storage component includes a capacitor, and the two ends of the capacitor are respectively electrically connected to the charge and discharge control path inside the power conversion chip; the power conversion chip includes a transient adjustment module, which is used to adjust the connection state of the charge and discharge control path based on the voltage of the voltage feedback input terminal and the control signal of the drive current to control the charge and discharge state of the second energy storage component.

10. The electronic device according to claim 8, wherein the power conversion chip is the power conversion chip as described in any one of claims 1 to 7, and the first signal path end and the second signal path end are connected to the transient adjustment module.

11. A transient control method, applied to an electronic device, the electronic device comprising a power conversion chip, a first energy storage component and a second energy storage component, comprising: Based on the voltage at the load end, the driving current outputted from the driving current output end of the power conversion chip is controlled, the driving current output end of the driving module is used to be connected to an external first energy storage component, the first energy storage component provides an output voltage to the load end, and, based on the voltage at the load end and the output state of the driving current, the charging and discharging state of the second energy storage component is controlled to achieve the regulation of the voltage at the driving current output end.

12. The transient control method according to claim 11, wherein the power conversion chip comprises: A first MOS transistor and a second MOS transistor are connected in series between a first power supply terminal and a second power supply terminal, the voltage of the first power supply terminal is greater than the voltage of the second power supply terminal, and the second end of the first MOS transistor is connected to the first end of the second MOS transistor as a driving current output end of the driving module; The method further includes: If the voltage at the load end is higher than the voltage at the drive current output end, and the difference between the voltage at the load end and the target voltage is greater than the overshoot threshold voltage, control the second energy storage component to charge to reduce the voltage at the load end; If the voltage at the load end is lower than the voltage at the drive current output end, the difference between the voltage at the load end and the target voltage is greater than the undershoot threshold voltage and the first MOS tube is in a disconnected state, the second energy storage component is controlled to discharge to increase the voltage at the drive current output end.

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