A hybrid voltage conversion circuit and hybrid voltage converter

Abstract

The embodiment of the present application provides a hybrid voltage conversion circuit and a hybrid voltage converter. The hybrid voltage conversion circuit comprises a hybrid branch and at least one capacitor branch; the hybrid branch comprises an inductor, a first capacitor and a first switch component, each capacitor branch comprises a second switch component and a second capacitor, the switch components comprise the first switch component and all the second switch components; the switch components are used for controlling the connection relationship between the first capacitor and each second capacitor; the hybrid voltage conversion circuit is used for raising the voltage at a first end of the hybrid voltage conversion circuit to different voltages or lowering the voltage at a second end of the hybrid voltage conversion circuit to different voltages based on different connection relationships between the first capacitor and each second capacitor. The voltage conversion ratio of the hybrid voltage conversion circuit has adjustability, and meanwhile the conversion efficiency of the circuit can be improved.

Description

Technical Field

[0001] This application relates to the field of voltage conversion technology, and more particularly to a hybrid voltage conversion circuit and a hybrid voltage converter. Background Technology

[0002] Traditional inductor-type boost circuits are wide-ratio boost circuits widely used in various industries. Taking automotive light-emitting diodes (LEDs) as an example, the output voltage of automotive headlight and taillight LED drivers can reach up to 60V, while the input battery voltage fluctuates between 6V and 18V. This requires the LED driver converter to support a boost ratio of up to 10 times.

[0003] Existing boost circuits suffer from significant losses and low conversion efficiency during application. Therefore, a circuit with higher conversion efficiency, namely the switched-capacitor voltage converter, has been proposed. However, the switched-capacitor voltage converter cannot adjust the voltage conversion ratio. Thus, using existing technology, it is impossible to simultaneously achieve both flexibility in the voltage conversion ratio and high circuit efficiency. Summary of the Invention

[0004] In view of the above problems, embodiments of this application provide a hybrid voltage conversion circuit and a hybrid voltage converter. The voltage conversion ratio of the hybrid voltage conversion circuit is adjustable, and the conversion efficiency of the circuit can be improved.

[0005] In a first aspect, embodiments of this application provide a hybrid voltage conversion circuit, including: a hybrid branch and at least one capacitor branch;

[0006] The hybrid branch includes an inductor, a first capacitor, and a first switching assembly. The first terminal of the first switching assembly is electrically connected to the first terminal of the inductor and the first terminal of the hybrid voltage conversion circuit. The second terminal of the first switching assembly is electrically connected to the first plate of the first capacitor. The third terminal of the first switching assembly is electrically connected to the second terminal of the inductor and the second plate of the first capacitor. The fourth terminal of the first switching assembly is electrically connected to the second terminal of the hybrid voltage conversion circuit. The fifth terminal of the first switching assembly is grounded.

[0007] Each of the capacitor branches includes a second switching assembly and a second capacitor, the switching assembly including the first switching assembly and all of the second switching assemblies;

[0008] The switching assembly is configured to, in a first state, control the inductor, the first capacitor, and each of the second capacitors to be connected in parallel; and in a second state, control the inductor and the first capacitor to be connected in series, the inductor and each of the second capacitors to be connected in series, and control the connection relationship between the first capacitor and each of the second capacitors.

[0009] The hybrid voltage conversion circuit is used to increase the voltage at the first terminal of the hybrid voltage conversion circuit to different voltages, or decrease the voltage at the second terminal of the hybrid voltage conversion circuit to different voltages, based on the different connection relationships between the first capacitor and each of the second capacitors.

[0010] In some embodiments, the first terminal of the hybrid voltage conversion circuit is electrically connected to the input voltage, and the hybrid voltage conversion circuit is used to boost the input voltage to different output voltages based on the different connection relationships between the first capacitor and each of the second capacitors;

[0011] The switching assembly is used to control the inductor, the first capacitor, and each of the second capacitors to be connected in parallel when the inductor is charging; and to control the inductor and the first capacitor to be connected in series when the inductor is discharging, and to control the connection relationship between the first capacitor and each of the second capacitors.

[0012] In some embodiments, the second terminal of the hybrid voltage conversion circuit is electrically connected to the input voltage, and the hybrid voltage conversion circuit is used to reduce the input voltage to different output voltages based on the different connection relationships between the first capacitor and each of the second capacitors;

[0013] The switching assembly is used to control the inductor and the first capacitor to be connected in series in the inductor charging state, and the inductor and each of the second capacitors to be connected in series, and to control the connection relationship between the first capacitor and each of the second capacitors; and to control the inductor, the first capacitor and each of the second capacitors to be connected in parallel in the inductor discharging state.

[0014] In some embodiments, the first switching assembly includes: a first switching transistor, a second switching transistor, and a third switching transistor;

[0015] The first terminal of the first switching transistor is electrically connected to the second terminal of the hybrid voltage conversion circuit. The second terminal of the first switching transistor is electrically connected to the first terminal of the second switching transistor and the first plate of the first capacitor. The second terminal of the second switching transistor is electrically connected to the first terminal of the inductor. The second terminal of the inductor is electrically connected to the second plate of the first capacitor and the first terminal of the third switching transistor. The second terminal of the third switching transistor is grounded.

[0016] In some embodiments, the hybrid voltage conversion circuit includes one of the capacitor branches;

[0017] The second switching assembly includes a fourth switching transistor, a fifth switching transistor, a sixth switching transistor, and a seventh switching transistor;

[0018] The first end of the fourth switch is electrically connected to the first end of the first switch, the second end of the fourth switch is electrically connected to the first plate of the second capacitor and the first end of the fifth switch, the second end of the fifth switch is electrically connected to the first end of the inductor, the second plate of the second capacitor is electrically connected to the first end of the sixth switch and the first end of the seventh switch, the second end of the sixth switch is electrically connected to the first plate of the first capacitor, and the second end of the seventh switch is electrically connected to the second plate of the first capacitor.

[0019] In some embodiments, the hybrid voltage conversion circuit includes N capacitor branches, where N is an integer greater than or equal to 2;

[0020] Each of the second switching components includes a fourth switching transistor, a fifth switching transistor, a sixth switching transistor, and a seventh switching transistor;

[0021] For each of the capacitor branches: the first terminal of the fourth switch is electrically connected to the first terminal of the first switch, the second terminal of the fourth switch is electrically connected to the first plate of the second capacitor and the first terminal of the fifth switch, the second terminal of the fifth switch is electrically connected to the first terminal of the inductor, and the second plate of the second capacitor is electrically connected to the first terminal of the sixth switch and the first terminal of the seventh switch;

[0022] For the first-stage capacitor branch: the second terminal of the sixth switch is electrically connected to the first plate of the first capacitor, and the second terminal of the seventh switch is electrically connected to the second plate of the first capacitor; wherein, the first-stage capacitor branch is the one closest to the hybrid branch among all the capacitor branches;

[0023] For the capacitor branches in other stages: the second terminal of the sixth switch is electrically connected to the first plate of the second capacitor in the capacitor branch of the previous stage, and the second terminal of the seventh switch is electrically connected to the second plate of the second capacitor in the capacitor branch of the previous stage.

[0024] In some embodiments, in the first state, the second switch, the third switch, the fifth switch, and the seventh switch are all turned on, and the first switch, the fourth switch, and the sixth switch are all turned off.

[0025] In some embodiments, the second state includes a first mode and a second mode;

[0026] In the first mode, the first switch, the fourth switch, and the seventh switch are all turned on, while the second switch, the third switch, the fifth switch, and the sixth switch are all turned off.

[0027] In the second mode, both the fourth switching tube and the sixth switching tube are turned on, and the first switching tube, the second switching tube, the third switching tube, the fifth switching tube and the seventh switching tube are all turned off.

[0028] In some embodiments, in the first state, the second switching tube, the third switching tube, the fifth switching tube in each of the capacitor branches and the seventh switching tube in each of the capacitor branches are all turned on, and the first switching tube, the fourth switching tube in each of the capacitor branches and the sixth switching tube in each of the capacitor branches are all turned off.

[0029] In some embodiments, the second state comprises N+1 modes;

[0030] In the first mode, the first switching tube, the fourth switching tube in each of the capacitor branches and the seventh switching tube in each of the capacitor branches are all turned on, and the second switching tube, the third switching tube, the fifth switching tube in each of the capacitor branches and the sixth switching tube in each of the capacitor branches are all turned off;

[0031] In the (i+1)-th mode, the first capacitor and all the second capacitors in the capacitor branches from the first stage to the i-th stage are sequentially connected in series, and all the second capacitors in the capacitor branches from the i-th stage to the N-th stage are connected in parallel with each other; wherein 1<i≤N, and i is an integer.

[0032] In a second aspect, embodiments of the present application provide a hybrid voltage converter, comprising: any one of the hybrid voltage conversion circuits provided in the first aspect.

[0033] In the technical solution of this application embodiment, the hybrid voltage conversion circuit includes a hybrid branch and at least one capacitor branch. The hybrid branch includes an inductor, a first capacitor, and a first switching assembly. The first terminal of the first switching assembly is electrically connected to the first terminal of the inductor and the first terminal of the hybrid voltage conversion circuit. The second terminal of the first switching assembly is electrically connected to the first plate of the first capacitor. The third terminal of the first switching assembly is electrically connected to the second terminal of the inductor and the second plate of the first capacitor. The fourth terminal of the first switching assembly is electrically connected to the second terminal of the hybrid voltage conversion circuit, and the fifth terminal of the first switching assembly is grounded. Each capacitor branch includes a second switching assembly and a second capacitor. The switching assembly includes a first switching assembly and all second switching assemblies. The switching assembly can control the inductor, the first capacitor, and each second capacitor to be connected in parallel in a first state. In the two-state control circuit, the inductor is connected in series with the first capacitor, and the inductor is connected in series with each of the second capacitors. The connection relationship between the first capacitor and each of the second capacitors is also controlled. The hybrid voltage conversion circuit can increase the voltage at the first terminal of the hybrid voltage conversion circuit to different voltages or decrease the voltage at the second terminal of the hybrid voltage conversion circuit to different voltages based on the different connection relationships between the first capacitor and each of the second capacitors. Thus, the hybrid voltage conversion circuit can convert the input voltage into different output voltages based on the different connection relationships between the first capacitor and each of the second capacitors, so the voltage conversion ratio of the circuit is adjustable. At the same time, the introduction of capacitors in the hybrid voltage conversion circuit can reduce the energy that the inductor needs to process, that is, reduce the average current of the inductor, and improve the conversion efficiency of the circuit.

[0034] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of a hybrid voltage conversion circuit provided in an embodiment of this application;

[0037] Figure 2 This is a schematic diagram of another hybrid voltage conversion circuit provided in an embodiment of this application;

[0038] Figure 3This is a schematic diagram of another hybrid voltage conversion circuit provided in an embodiment of this application;

[0039] Figure 4A for Figure 3 A schematic diagram of the hybrid voltage conversion circuit in a first state is shown.

[0040] Figure 4B for Figure 3 A schematic diagram of a second state of the hybrid voltage conversion circuit shown;

[0041] Figure 4C for Figure 3 A schematic diagram of another first state of the hybrid voltage conversion circuit shown;

[0042] Figure 5 This is a schematic diagram of another hybrid voltage conversion circuit provided in an embodiment of this application;

[0043] Figure 6 This is a schematic diagram of another hybrid voltage conversion circuit provided in an embodiment of this application;

[0044] Figure 7A for Figure 5 A schematic diagram of the hybrid voltage conversion circuit in a first state is shown.

[0045] Figure 7B for Figure 5 A schematic diagram of a second state of the hybrid voltage conversion circuit shown;

[0046] Figure 7C for Figure 5 A schematic diagram of the hybrid voltage conversion circuit in another second state;

[0047] Figure 7D for Figure 5 The schematic diagram shows another second state of the hybrid voltage conversion circuit shown.

[0048] Figure 8A for Figure 6 A schematic diagram of the hybrid voltage conversion circuit in a first state is shown.

[0049] Figure 8B for Figure 6 A schematic diagram of a second state of the hybrid voltage conversion circuit shown;

[0050] Figure 8C for Figure 6 A schematic diagram of another first state of the hybrid voltage conversion circuit shown;

[0051] Figure 8D for Figure 6 The diagram shows another first state of the hybrid voltage conversion circuit.

[0052] Figure 8E for Figure 6 The diagram shows another first state of the hybrid voltage conversion circuit.

[0053] Figure 8F for Figure 6 The diagram shows another first state of the hybrid voltage conversion circuit. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0056] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0057] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0058] In the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "connected" shall be interpreted broadly. For example, "connected" or "connected" in circuit structure can refer not only to physical connection, but also to electrical connection or signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is connected. It can also refer to the internal connection of two elements. Signal connection can refer not only to signal connection through circuit, but also to signal connection through a medium, such as radio waves.

[0059] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0060] Figure 1 This is a schematic diagram of a hybrid voltage conversion circuit provided in an embodiment of this application, as shown below. Figure 1 As shown, the hybrid voltage conversion circuit 100 includes a hybrid branch 10 and at least one capacitor branch 20.

[0061] The hybrid branch 10 includes an inductor L, a first capacitor C1, and a first switching assembly 31. The first end of the first switching assembly 31 is electrically connected to the first end of the inductor L and the first end of the hybrid voltage conversion circuit 100. The second end of the first switching assembly 31 is electrically connected to the first plate of the first capacitor C1. The third end of the first switching assembly 31 is electrically connected to the second end of the inductor L and the second plate of the first capacitor C1. The fourth end of the first switching assembly 31 is electrically connected to the second end of the hybrid voltage conversion circuit 100. The fifth end of the first switching assembly 31 is grounded to GND.

[0062] Each capacitor branch 20 includes a second switching assembly 32 and a second capacitor C2. The switching assembly 30 includes a first switching assembly 31 and all the second switching assemblies 32. The switching assembly 30 is used to control the inductor L, the first capacitor C1 and each of the second capacitors C2 to be connected in parallel in a first state; and to control the inductor L to be connected in series with the first capacitor C1 in a second state, and to control the connection relationship between the first capacitor C1 and each of the second capacitors C2.

[0063] The hybrid voltage conversion circuit 100 is used to increase the voltage at the first terminal of the hybrid voltage conversion circuit 100 to different voltages or decrease the voltage at the second terminal of the hybrid voltage conversion circuit 100 to different voltages based on the different connection relationships between the first capacitor C1 and each of the second capacitors C2.

[0064] For example, such as Figure 1As shown, the hybrid voltage conversion circuit 100 includes a hybrid branch 10 and a capacitor branch 20. The first terminal of the hybrid voltage conversion circuit 100 is electrically connected to the input terminal IN of the hybrid voltage conversion circuit 100, and the second terminal of the hybrid voltage conversion circuit 100 is electrically connected to the output terminal OUT of the hybrid voltage conversion circuit 100. The input terminal IN of the hybrid voltage conversion circuit 100 is electrically connected to the input voltage Vin, and the output terminal OUT of the hybrid voltage conversion circuit 100 is grounded through the output capacitor Cout.

[0065] When inductor L is charging, the first switching component 31 can control inductor L and first capacitor C1 to be connected in parallel, and the second switching component 32 can control second capacitor C2 to be connected in parallel with first capacitor C1. The input terminal IN of the hybrid voltage conversion circuit 100 can be grounded through the parallel second capacitor C2 and first capacitor C1, then the voltage V of first capacitor C1... C1 =V of the second capacitor C2 C2 =Vin. In addition, the input terminal IN of the hybrid voltage conversion circuit 100 can also be grounded through inductor L, so that the electrical energy provided by Vin can be stored in inductor L.

[0066] When the inductor L is in the discharge state, the first switching component 31 can control the inductor L and the first capacitor C1 to be connected in series, the second switching component 32 can control the second capacitor C2 to be connected in series with the inductor L, and the second switching component 32 can also control the second capacitor C2 and the first capacitor C1 to be connected in series or in parallel.

[0067] In some embodiments, the second switching component 32 controls the second capacitor C2 and the first capacitor C1 to be connected in parallel. After the second capacitor C2 and the first capacitor C1 are connected in parallel, they are connected in series with the inductor L. The hybrid voltage conversion circuit 100 is in a boost mode, and the parallel-connected second capacitor C2 and the first capacitor C1 can provide V to the output terminal OUT. C1 The inductor L can provide voltage V to the output terminal OUT. L Thus, Vout = V C1 +V L That is, Vout = Vin + V L The hybrid voltage conversion circuit 100 can boost the input voltage Vin to Vin+V. L .

[0068] In some embodiments, the second switching component 32 controls the second capacitor C2 and the first capacitor C1 to be connected in series. Then, the inductor L is connected in series with the first capacitor C1 and the second capacitor C2 in sequence. The hybrid voltage conversion circuit 100 is in a double boost mode, and the first capacitor C1 provides V to the output terminal OUT. C1 The second capacitor C2 can provide V to the output terminal OUT. C2 The inductor L can provide voltage V to the output terminal OUT. LThus, Vout = V C1 +V C2 +V L That is, Vout = 2*Vin + V L The hybrid voltage conversion circuit 100 can increase the input voltage Vin to 2*Vin+V. L .

[0069] In summary, when inductor L is charging, the switching component 30 can control the inductor L, the first capacitor C1, and the second capacitor C2 to be connected in parallel. When inductor L is discharging, the switching component 30 can control the inductor L and the first capacitor C1 to be connected in series, the second capacitor C2 to be connected in series with inductor L, and the first capacitor C1 and the second capacitor to be connected in series or in parallel. Based on the different connection relationships between the first capacitor C1 and the second capacitor C2, the hybrid voltage conversion circuit 100 is in different boost modes, which can boost the input voltage Vin to different output voltages Vout. Thus, in boost mode, the voltage conversion ratio of the hybrid voltage conversion circuit 100 is adjustable.

[0070] In other embodiments, Figure 2 A schematic diagram of another hybrid voltage conversion circuit provided in this application embodiment is shown below. Figure 2 As shown, the first terminal of the hybrid voltage conversion circuit 100 is electrically connected to the output terminal OUT of the hybrid voltage conversion circuit 100, the second terminal of the hybrid voltage conversion circuit 100 is electrically connected to the input terminal IN of the hybrid voltage conversion circuit 100, the input terminal IN of the hybrid voltage conversion circuit 100 is electrically connected to the input voltage Vin, and the output terminal OUT of the hybrid voltage conversion circuit 100 is grounded through the output capacitor Cout.

[0071] When the inductor L is charging, the first switch assembly 31 can control the inductor L and the first capacitor C1 to be connected in series, and the second switch assembly 32 can control the second capacitor C2 to be connected in series with the inductor L. The second switch assembly 32 can also control the second capacitor C2 and the first capacitor C1 to be connected in series or in parallel.

[0072] In some embodiments, the second switching component 32 controls the second capacitor C2 and the first capacitor C1 to be connected in parallel. Then, the second capacitor C2 and the first capacitor C1, after being connected in parallel, are connected in series with the inductor L. The hybrid voltage conversion circuit 100 is in a step-down mode. The input terminal IN of the hybrid voltage conversion circuit 100 is grounded through the parallel second capacitor C2 and the first capacitor C1, and then through the inductor L. Thus, V C2 =V C1 =Vin-V L .

[0073] In some embodiments, the second switching component 32 controls the second capacitor C2 and the first capacitor C1 to be connected in series. Then, the inductor L is connected in series with the first capacitor C1 and the second capacitor C2 in sequence. The hybrid voltage conversion circuit 100 is in a double-step-down mode. The input terminal IN of the hybrid voltage conversion circuit 100 is grounded through the second capacitor C2, the first capacitor C1, and the inductor L in sequence. Thus, V C2 =V C1 =(Vin-V) L ) / 2.

[0074] When inductor L is discharging, the first switching component 31 can control inductor L and first capacitor C1 to be connected in parallel, and the second switching component 32 can control second capacitor C2 to be connected in parallel with first capacitor C1. The parallel connection of first capacitor C1, second capacitor C2, and inductor L provides voltage to the output terminal OUT. If the hybrid voltage conversion circuit 100 is in a step-down mode, then Vout = Vin - V L That is, the hybrid voltage conversion circuit 100 can reduce the input voltage Vin to Vin-V. L If the hybrid voltage conversion circuit 100 is in double buck mode, then Vout = (Vin - V L ) / 2, that is, the hybrid voltage conversion circuit 100 can reduce the input voltage Vin to (Vin-V) / 2. L ) / 2.

[0075] In summary, when inductor L is discharging, the switching assembly 30 can control the inductor L, the first capacitor C1, and the second capacitor C2 to be connected in parallel. When inductor L is charging, the switching assembly 30 can control the inductor L and the first capacitor C1 to be connected in series, the second capacitor C2 to be connected in series with inductor L, and the first capacitor C1 and the second capacitor to be connected in series or in parallel. Based on the different connection relationships between the first capacitor C1 and the second capacitor C2, the hybrid voltage conversion circuit 100 operates in different buck modes, reducing the input voltage Vin to different output voltages Vout. Thus, in buck mode, the voltage conversion ratio of the hybrid voltage conversion circuit 100 is adjustable.

[0076] For example, such as Figure 1 and Figure 2 As shown, the hybrid voltage conversion circuit 100 includes a first capacitor C1, a second capacitor C2, and an inductor L. All three capacitors—C1, C2, and L—process energy. Compared to existing boost circuits where only inductor L processes energy, the first capacitor C1 and second capacitor C2 in the hybrid voltage conversion circuit 100 can share some of the energy that would otherwise need to be processed by inductor L, thereby reducing the amount of energy that inductor L needs to process, i.e., reducing the average current of inductor L. For example, the gain of the hybrid voltage conversion circuit 100 in boost mode is G = Vout / Vin = 1 + V. L / Vin, where VL / Vin can be expressed as 1 / (1-D), where D is the duty cycle of inductor L during the charging phase of one charge / discharge cycle. The average current of inductor L... Compared to the average current G of the inductor in existing boost circuits, the average current of the inductor L in the hybrid voltage conversion circuit 100 is lower. For example, the gain of the hybrid voltage conversion circuit 100 in double boost mode is G = Vout / Vin = 2 + 1 / (1-D), and the average current of the inductor L is... Compared to the average current G of the inductor in existing boost circuits, the average current of the inductor L in the hybrid voltage conversion circuit 100 is lower.

[0077] It should be noted that, Figure 1 and Figure 2 The hybrid voltage conversion circuit 100 is shown as an example only, including one capacitor branch 20. In practical applications, the hybrid voltage conversion circuit 100 may include N capacitor branches 20, where N is an integer greater than or equal to 2.

[0078] In this embodiment, the hybrid voltage conversion circuit includes a hybrid branch and at least one capacitor branch. The hybrid branch includes an inductor, a first capacitor, and a first switching assembly. A first terminal of the first switching assembly is electrically connected to a first terminal of the inductor and a first terminal of the hybrid voltage conversion circuit. A second terminal of the first switching assembly is electrically connected to a first plate of the first capacitor. A third terminal of the first switching assembly is electrically connected to a second terminal of the inductor and a second plate of the first capacitor. A fourth terminal of the first switching assembly is electrically connected to a second terminal of the hybrid voltage conversion circuit. A fifth terminal of the first switching assembly is grounded. Each capacitor branch includes a second switching assembly and a second capacitor. The switching assembly includes a first switching assembly and all second switching assemblies. The switching assembly is capable of controlling the inductor, the first capacitor, and each second capacitor to be connected in parallel in a first state; and in a second state... In the control state, the inductor is connected in series with the first capacitor, and the inductor is connected in series with each of the second capacitors, and the connection relationship between the first capacitor and each of the second capacitors is controlled. The hybrid voltage conversion circuit can increase the voltage at the first terminal of the hybrid voltage conversion circuit to different voltages or decrease the voltage at the second terminal of the hybrid voltage conversion circuit to different voltages based on the different connection relationships between the first capacitor and each of the second capacitors. Thus, the hybrid voltage conversion circuit can convert the input voltage into different output voltages based on the different connection relationships between the first capacitor and each of the second capacitors, so the voltage conversion ratio of the circuit is adjustable. At the same time, the introduction of capacitors in the hybrid voltage conversion circuit can reduce the energy that the inductor needs to handle, that is, reduce the average current of the inductor, and improve the conversion efficiency of the circuit.

[0079] In some embodiments, Figure 3 This is a schematic diagram of another hybrid voltage conversion circuit provided in an embodiment of this application. Figure 3 for Figure 1 Based on the embodiment shown, the first switching assembly 31 includes: a first switching transistor Q1, a second switching transistor Q2, and a third switching transistor Q3.

[0080] The first terminal of the first switch Q1 is electrically connected to the second terminal of the hybrid voltage conversion circuit 100. The second terminal of the first switch Q1 is electrically connected to the first terminal of the second switch Q2 and the first plate of the first capacitor C1. The second terminal of the second switch Q2 is electrically connected to the first terminal of the inductor L. The second terminal of the inductor L is electrically connected to the second plate of the first capacitor C1 and the first terminal of the third switch Q3. The second terminal of the third switch Q3 is grounded.

[0081] For example, in combination Figure 1 and Figure 3 As shown, the hybrid voltage conversion circuit 100 includes a capacitor branch 20. The second switching assembly 32 in the capacitor branch 20 includes a fourth switch Q4, a fifth switch Q5, a sixth switch Q6, and a seventh switch Q7. The first terminal of the fourth switch Q4 is electrically connected to the first terminal of the first switch Q1; the second terminal of the fourth switch Q4 is electrically connected to the first plate of the second capacitor C2 and the first terminal of the fifth switch Q5; the second terminal of the fifth switch Q5 is electrically connected to the first terminal of the inductor L; the second plate of the second capacitor C2 is electrically connected to the first terminals of the sixth switch Q6 and the seventh switch Q7; the second terminal of the sixth switch Q6 is electrically connected to the first plate of the first capacitor C1; and the second terminal of the seventh switch Q7 is electrically connected to the second plate of the first capacitor C1.

[0082] Obviously, as Figure 3 As shown, the first terminal of inductor L, the second terminal of the fifth switch Q5, and the second terminal of the second switch Q2 are all electrically connected to the input terminal IN. The first terminal of the second switch Q2 is electrically connected to the first plate of the first capacitor C1, the second terminal of the sixth switch Q6, and the second terminal of the first switch Q1. The first terminal of the fifth switch Q5 is electrically connected to the second terminal of the fourth switch Q4 and the first plate of the second capacitor C2. The first terminals of the fourth switch Q4 and the first terminals of the first switch Q1 are all electrically connected to the output terminal OUT. The first terminal of the sixth switch Q6 is electrically connected to the second plate of the second capacitor C2 and the first terminal of the seventh switch Q7. The second terminal of the seventh switch Q7, the second plate of the second capacitor C2, and the second terminal of inductor L are all grounded through the third switch Q3.

[0083] Figure 4A for Figure 3 The diagram shows a first-state structural schematic of the hybrid voltage conversion circuit. Figure 4B for Figure 3 The diagram shown is a structural schematic of a second state of the hybrid voltage conversion circuit. Figure 4C for Figure 3The diagram shows a second state of the hybrid voltage conversion circuit. Figure 4A As shown, when inductor L is charging, the second switch Q2, the third switch Q3, the fifth switch Q5, and the seventh switch Q7 are all turned on, while the first switch Q1, the fourth switch Q4, and the sixth switch Q6 are all turned off. The output terminal IN can be grounded sequentially through inductor L and the third switch Q3, and the input terminal IN can be grounded sequentially through the second switch Q2, the first capacitor C1, and the third switch Q3. The input terminal IN can also be grounded sequentially through the fifth switch Q5, the second capacitor C2, the seventh switch Q7, and the third switch Q3. At this time, the first capacitor C1 and the second capacitor C2 are also charging, and at the end of charging, V C1 =V C2 =Vin.

[0084] The discharge state of inductor L includes two modes: mode one and mode two. Mode one is a 1x boost mode, and mode two is a 2x boost mode. In mode one, as... Figure 4B As shown, the first switch Q1, the fourth switch Q4, and the seventh switch Q7 are all turned on, while the second switch Q2, the third switch Q3, the fifth switch Q5, and the sixth switch Q6 are all turned off. The first capacitor C1 and the second capacitor C2 are connected in parallel between the inductor L and the output terminal OUT. Thus, the first capacitor C1 and the second capacitor C2 are connected in parallel and then in series with the inductor L to form a power supply component. The power supply component provides voltage to the output terminal OUT. Here, the 1x boost mode means that when the first capacitor C1 and the second capacitor C2 are discharged, they are connected in parallel, and the voltage is equal to Vin.

[0085] In the second mode, such as Figure 4C As shown, the fourth switch Q4 and the sixth switch Q6 are both turned on, while the first switch Q1, the second switch Q2, the third switch Q3, the fifth switch Q5, and the seventh switch Q7 are all turned off. The inductor L is connected to the output terminal OUT in sequence through the first capacitor C1 and the second capacitor C2. Thus, the inductor L is connected in series with the first capacitor C1 and the second capacitor C2. The series-connected component provides voltage to the output terminal OUT. The double boost mode here refers to the voltage equal to 2*Vin when the first capacitor C1 and the second capacitor C2 are connected in series during discharge.

[0086] In summary, based on the two modes of the second state, the hybrid voltage conversion circuit 100 can switch between two voltage conversion ratios.

[0087] For example, Figure 5 A schematic diagram of another hybrid voltage conversion circuit provided in this application embodiment is shown below. Figure 5As shown, the hybrid voltage conversion circuit 100 includes N capacitor branches 20, where N is an integer greater than or equal to 2. Each second switching assembly includes a fourth switch Q4, a fifth switch Q5, a sixth switch Q6, and a seventh switch Q7.

[0088] For each capacitor branch 20: the first terminal of the fourth switch Q4 is electrically connected to the first terminal of the first switch Q1, the second terminal of the fourth switch Q4 is electrically connected to the first plate of the second capacitor C2 and the first terminal of the fifth switch Q5, the second terminal of the fifth switch Q5 is electrically connected to the first terminal of the inductor L, and the second plate of the second capacitor C2 is electrically connected to the first terminal of the sixth switch Q6 and the first terminal of the seventh switch Q7.

[0089] For the first-stage capacitor branch 20: the second terminal of the sixth switch Q6 is electrically connected to the first plate of the first capacitor C1, and the second terminal of the seventh switch Q7 is electrically connected to the second plate of the first capacitor C1. The first-stage capacitor branch 20 is the one closest to the hybrid branch 10 among all capacitor branches 20. For the other capacitor branches 20: the second terminal of the sixth switch Q6 is electrically connected to the first plate of the second capacitor C2 in the previous stage capacitor branch 20, and the second terminal of the seventh switch Q7 is electrically connected to the second plate of the second capacitor C2 in the previous stage capacitor branch 20.

[0090] like Figure 5 As shown, the hybrid voltage conversion circuit 100 includes two capacitor branches 20, namely a first-stage capacitor branch 21 and a second-stage capacitor branch 22. The first-stage capacitor branch 21 is the one of the two capacitor branches 20 that is closer to the hybrid branch 10. The first-stage capacitor branch 21 includes a second switching assembly and a second capacitor C2a. The second switching assembly of the first-stage capacitor branch 21 includes a fourth switch Q4a, a fifth switch Q5a, a sixth switch Q6a, and a seventh switch Q7a. The second-stage capacitor branch 22 includes a second switching assembly and a second capacitor C2b. The second switching assembly of the second-stage capacitor branch 22 includes a fourth switch Q4b, a fifth switch Q5b, a sixth switch Q6b, and a seventh switch Q7b.

[0091] The first terminal of the inductor L, the second terminal of the second switching tube Q2, the second terminal of the fifth switching tube Q5a and the second terminal of the fifth switching tube Q5b are all electrically connected to the input terminal IN. The first terminal of the second switching tube Q2 is electrically connected to the second terminal of the first switching tube Q1, the first plate of the first capacitor C1 and the second terminal of the sixth switching tube Q6a. The first terminal of the fifth switching tube Q5a is electrically connected to the second terminal of the fourth switching tube Q4a, the first plate of the second capacitor C2a and the second terminal of the sixth switching tube Q6b. The first terminal of the fifth switching tube Q5b is electrically connected to the second terminal of the fourth switching tube Q4b and the first plate of the second capacitor C2b. The first terminal of the first switching tube Q1, the first terminal of the fourth switching tube Q4a and the first terminal of the fourth switching tube Q4b are all electrically connected to the output terminal OUT. The second plate of the first capacitor C1 is electrically connected to the second terminal of the inductor L, the first terminal of the third switching tube Q3 and the second terminal of the seventh switching tube Q7a. The second plate of the second capacitor C2a is electrically connected to the first terminal of the sixth switching tube Q6a, the first terminal of the seventh switching tube Q7a and the second terminal of the seventh switching tube Q7b. The second plate of the second capacitor C2b is electrically connected to the first terminal of the sixth switching tube Q6b and the first terminal of the seventh switching tube Q7b. The second terminal of the third switching tube Q3 is grounded.

[0092] It should be noted that, Figure 5 it is only exemplarily shown that the hybrid voltage conversion circuit 100 includes two capacitor branches 20. In other embodiments, the hybrid voltage conversion circuit 100 may also include three or more capacitor branches 20, as shown in Figure 6 , that is, it includes a first-stage capacitor branch 21 and two or more other-stage capacitor branches 22.

[0093] As shown in Figure 6 , the first-stage capacitor branch 21 includes a second switching component and a second capacitor C2a, and the second switching component in the first-stage capacitor branch 21 includes a fourth switching tube Q4a, a fifth switching tube Q5a, a sixth switching tube Q6a and a seventh switching tube Q7a; the i-th-stage capacitor branch 22 includes a second switching component and a second capacitor C2b, 1 < i ≤ N, and i is an integer, and the second switching component in the i-th-stage capacitor branch 22 includes a fourth switching tube Q4b, a fifth switching tube Q5b, a sixth switching tube Q6b and a seventh switching tube Q7b.

[0094] The first terminal of inductor L, the second terminal of second switch Q2, and the second terminal of fifth switch Q5a are all electrically connected to the input terminal IN. The first terminal of second switch Q2 is electrically connected to the second terminal of first switch Q1, the first plate of first capacitor C1, and the second terminal of sixth switch Q6a. The first terminal of fifth switch Q5a is electrically connected to the second terminal of fourth switch Q4a and the first plate of second capacitor C2a. The first terminals of first switch Q1 and fourth switch Q4a are both electrically connected to the output terminal OUT. The second plate of first capacitor C1 is electrically connected to the second terminal of inductor L, the first terminal of third switch Q3, and the second terminal of seventh switch Q7a. The second plate of second capacitor C2a is electrically connected to the first terminals of sixth switch Q6a and seventh switch Q7a. The second terminal of third switch Q3 is grounded.

[0095] In the i-th stage capacitor branch 22, the first terminal of the fifth switch Q5b is electrically connected to the second terminal of the fourth switch Q4 and the first plate of the second capacitor C2b. The second plate of the second capacitor C2b is electrically connected to the first terminal of the sixth switch Q6b and the first terminal of the seventh switch Q7b. The first terminal of the fourth switch Q4 is electrically connected to the output terminal OUT, and the second terminal of the fifth switch Q5b is electrically connected to the input terminal IN. In the (i+1)-th stage capacitor branch 22, the second terminal of the sixth switch Q6b is electrically connected to the first plate of the second capacitor C2b in the i-th stage capacitor branch 22, and the second terminal of the seventh switch Q7b in the (i+1)-th stage capacitor branch 22 is electrically connected to the second plate of the second capacitor C2b in the i-th stage capacitor branch 22.

[0096] In some embodiments, Figure 7A for Figure 5 The diagram shows a first-state structural schematic of the hybrid voltage conversion circuit. Figure 8A for Figure 6 The diagram shown illustrates the structure of a hybrid voltage conversion circuit in a first state, where the inductor L is in its charging state, as shown below. Figure 7A and Figure 8A As shown, the second switch Q2, the third switch Q3, the fifth switch Q5 in each capacitor branch 20, and the seventh switch Q7 in each capacitor branch 20 are all turned on, while the first switch Q1, the fourth switch Q4 in each capacitor branch 20, and the sixth switch Q6 in each capacitor branch 20 are all turned off.

[0097] For example, the hybrid voltage conversion circuit 100 Figure 5 As shown, it includes two capacitor branches 20. In the charging state of the inductor L, as... Figure 7AAs shown, the second switch Q2, the third switch Q3, the fifth switch Q5a, the fifth switch Q5b, the seventh switch Q7a, and the seventh switch Q7b are all turned on, while the first switch Q1, the fourth switch Q4a, the fourth switch Q4b, the sixth switch Q6a, and the sixth switch Q6b are all turned off. The output terminal IN can be grounded sequentially through inductor L and the third switch Q3. The input terminal IN can be grounded sequentially through the second switch Q2, the first capacitor C1, and the third switch Q3. The input terminal IN can also be grounded sequentially through the fifth switch Q5a, the second capacitor C2a, the seventh switch Q7a, and the third switch Q3. The input terminal IN can also be grounded sequentially through the fifth switch Q5b, the second capacitor C2b, the seventh switch Q7b, the seventh switch Q7a, and the third switch Q3. At this time, the first capacitor C1, the second capacitor C2a, and the second capacitor C2b are also in a charging state, and at the end of charging, V C1 =V C2a =V C2b =Vin.

[0098] In other embodiments, the hybrid voltage conversion circuit 100 is as follows: Figure 6 As shown, there are two or more capacitor branches 20. In the charging state of the inductor L, as... Figure 8A As shown, the second switch Q2, the third switch Q3, the fifth switch Q5a, N-1 fifth switches Q5b, the seventh switch Q7a, and N-1 seventh switches Q7b are all turned on, while the first switch Q1, the fourth switch Q4a, N-1 fourth switches Q4b, the sixth switch Q6a, and N-1 sixth switches Q6b are all turned off. The output terminal IN can be grounded sequentially through inductor L and the third switch Q3. The input terminal IN can be grounded sequentially through the second switch Q2, the first capacitor C1, and the third switch Q3. The input terminal IN can be grounded sequentially through the fifth switch Q5a, the second capacitor C2a, the seventh switch Q7a, and the third switch Q3. The input terminal IN can be grounded sequentially through the fifth switch Q5b, the second capacitor C2bi, the seventh switch Q7b, and all the seventh switches Q7b, the seventh switch Q7a, and the third switch Q3 in the i-th stage capacitor branch 22. At this time, the first capacitor C1, the second capacitor C2a, and N-1 second capacitors C2b are also in a charging state, and at the end of charging, V C1 =V C2a =V C2b =Vin.

[0099] In some embodiments, Figure 7B for Figure 5 The diagram shown is a structural schematic of a second state of the hybrid voltage conversion circuit. Figure 7C for Figure 5Schematic structural diagram of the hybrid voltage conversion circuit shown in another second state, Figure 7D is Figure 5 Schematic structural diagram of the hybrid voltage conversion circuit shown in another second state, Figure 8B is Figure 6 Schematic structural diagram of the hybrid voltage conversion circuit shown in a second state, Figure 8C is Figure 6 Schematic structural diagram of the hybrid voltage conversion circuit shown in another first state, Figure 8D is Figure 6 Schematic structural diagram of the hybrid voltage conversion circuit shown in another first state, Figure 8E is Figure 6 Schematic structural diagram of the hybrid voltage conversion circuit shown in another first state, Figure 8F is Figure 6 Schematic structural diagram of the hybrid voltage conversion circuit shown in another first state.

[0100] As shown in Figures 7B-7D and Figures 8B-8F , the second state comprises N+1 modes. In the first mode, the first switching transistor Q1, the fourth switching transistor Q4 in each capacitor branch 20 and the seventh switching transistor Q7 in each capacitor branch 20 are all conducting, and the second switching transistor Q2, the third switching transistor Q3, the fifth switching transistor Q5 in each capacitor branch 20 and the sixth switching transistor Q6 in each capacitor branch 20 are all cut off. In the (i+1)-th mode, the first capacitor C1 and all the second capacitors C2 in the first-stage to the i-th capacitor branches 22 are sequentially connected in series, and all the second capacitors C2 in the i-th to the N-th capacitor branches 22 are connected in parallel with each other, where 1 < i ≤ N, and i is an integer.

[0101] For example, the hybrid voltage conversion circuit 100 as shown in Figure 5 comprises two capacitor branches 20, the discharge state of an inductor L comprises three modes, the first mode is a 1× voltage boost mode, the second mode is a 2× voltage boost mode, and the third mode is a 3× voltage boost mode. In the first mode, as Figure 7BAs shown, the first switch Q1, the fourth switch Q4a, the fourth switch Q4b, the seventh switch Q7a, and the seventh switch Q7b are all turned on, while the second switch Q2, the third switch Q3, the fifth switch Q5a, the fifth switch Q5b, the sixth switch Q6a, and the sixth switch Q6b are all turned off. The first capacitor C1, the second capacitor C2a, and the second capacitor C2b are connected in parallel between the inductor L and the output terminal OUT. Thus, the first capacitor C1, the second capacitor C2a, and the second capacitor C2b, connected in parallel and then in series with the inductor L, form a power supply component. This power supply component provides voltage to the output terminal OUT. The first mode here, the one-time boost mode, refers to the parallel connection of the first capacitor C1, the second capacitor C2a, and the second capacitor C2b when they discharge, with a voltage equal to Vin. The gain of the hybrid voltage conversion circuit 100 in the one-time boost mode is G = Vout / Vin = 1 + 1 / (1-D), and the average current of the inductor L is...

[0102] In the second mode, such as Figure 7C As shown, the fourth switch Q4a, the fourth switch Q4b, the sixth switch Q6a, and the seventh switch Q7b are all turned on, while the first switch Q1, the second switch Q2, the third switch Q3, the fifth switch Q5a, the fifth switch Q5b, the sixth switch Q6b, and the seventh switch Q7a are all turned off. The second capacitor C2a and the second capacitor C2b are connected in parallel and then connected in series with the first capacitor C1 and the inductor L to form a power supply component. This power supply component provides voltage to the output terminal OUT. The second mode here, i.e., the double boost mode, refers to the situation where, when the first capacitor C1, the second capacitor C2a, and the second capacitor C2b are discharging, the second capacitor C2a and the second capacitor C2b are connected in parallel and then connected in series with the first capacitor C1, resulting in a total voltage equal to 2*Vin. The gain of the hybrid voltage conversion circuit 100 in the double boost mode is G = Vout / Vin = 2 + 1 / (1-D), and the average current of the inductor L is...

[0103] In the third mode, such as Figure 7DAs shown, the fourth switching tube Q4b, the sixth switching tube Q6a and the sixth switching tube Q6b are all conducting, and the first switching tube Q1, the second switching tube Q2, the third switching tube Q3, the fourth switching tube Q4a, the fifth switching tube Q5a, the fifth switching tube Q5b, the seventh switching tube Q7a and the seventh switching tube Q7b are all cut off. The inductor L forms a power supply assembly after being connected in series with the first capacitor C1, the second capacitor C2a and the second capacitor Cab in sequence, and the power supply assembly supplies voltage to the output terminal OUT. The third mode mentioned here is the three-fold boost mode, which means that when the first capacitor C1, the second capacitor C2a and the second capacitor C2b discharge, the second capacitor C2a, the second capacitor C2b and the first capacitor C1 are connected in series, and the voltage is equal to 3*Vin. The gain G of the hybrid voltage conversion circuit 100 in the three-fold boost mode is G=Vout / Vin=3+1 / (1-D), and the average current of the inductor L

[0104] In other embodiments, the hybrid voltage conversion circuit 100 is as Figure 6 shown, it includes more than two capacitor branches 20, and the discharge states of the inductor L include N+1 modes. For example, the first mode is the one-fold boost mode, the second mode is the two-fold boost mode, and the (i+1)-th mode is the (i+1)-fold boost mode, where 1<i≤N and i is an integer. In the first mode, as Figure 8B shown, the first switching tube Q1, the fourth switching tube Q4a, N-1 fourth switching tubes Q4b, the seventh switching tube Q7a and N-1 seventh switching tubes Q7b are all conducting, and the second switching tube Q2, the third switching tube Q3, the fifth switching tube Q5a, N-1 fifth switching tubes Q5b, the sixth switching tube Q6a and N-1 sixth switching tubes Q6b are all cut off. The first capacitor C1 and N second capacitors C2 are all connected in parallel between the inductor L and the output terminal OUT. Thus, the first capacitor C1 and N parallel second capacitors C2 are connected in parallel and then connected in series with the inductor L to form a power supply assembly, and the power supply assembly supplies voltage to the output terminal OUT. The first mode mentioned here is the one-fold boost mode, which means that when the first capacitor C1 and N second capacitors C2 discharge, they are connected in parallel, and the voltage is equal to Vin. The gain G of the hybrid voltage conversion circuit 100 in the one-fold boost mode is G=Vout / Vin=1+1 / (1-D), and the average current of the inductor L

[0105] In the second mode, as Figure 8CAs shown in the figure, the fourth switching transistor Q4a, N-1 fourth switching transistors Q4b, the sixth switching transistor Q6a and N-1 seventh switching transistors Q7b are all turned on, while the first switching transistor Q1, the second switching transistor Q2, the third switching transistor Q3, the fifth switching transistor Q5a, N-1 fifth switching transistors Q5b, N-1 sixth switching transistors Q6b and the seventh switching transistor Q7a are all turned off. After N second capacitors C2 are connected in parallel, they are sequentially connected in series with the first capacitor C1 and the inductor L to form a power supply module, which supplies voltage to the output terminal OUT. The second mode mentioned herein is the double voltage boost mode, which means that when the first capacitor C1 and N second capacitors C2 discharge, the N second capacitors C2 connected in parallel are further connected in series with the first capacitor C1, and the total voltage is equal to 2*Vin. The gain G of the hybrid voltage conversion circuit 100 in the double voltage boost mode is G=Vout / Vin=2+1 / (1-D), and the average current of the inductor L

[0106] When i=2, that is, in the third mode, as Figure 8D shown in the figure, N-1 fourth switching transistors Q4b, the sixth switching transistor Q6a, the sixth switching transistor Q6b in the second-stage capacitor branch 22 and all seventh switching transistors Q7b in the third-stage capacitor branch 22 to the N-stage capacitor branch 22 are all turned on, while the first switching transistor Q1, the second switching transistor Q2, the third switching transistor Q3, the fourth switching transistor Q4a, the fifth switching transistor Q5a, N-1 fifth switching transistors Q5b, all sixth switching transistors Q6b in the third-stage capacitor branch 22 to the N-stage capacitor branch 22, the seventh switching transistor Q7a and the seventh switching transistor Q7b in the second-stage capacitor branch 22 are all turned off. After N-1 second capacitors C2b are connected in parallel, they are sequentially connected in series with the second capacitor C2a, the first capacitor C1 and the inductor L to form a power supply module, which supplies voltage to the output terminal OUT. The third mode mentioned herein is the triple voltage boost mode, which means that when the first capacitor C1 and N second capacitors C2 discharge, the N-1 second capacitors C2b connected in parallel are further sequentially connected in series with the second capacitor C2a and the first capacitor C1, and the total voltage is equal to 3*Vin. The gain G of the hybrid voltage conversion circuit 100 in the triple voltage boost mode is G=Vout / Vin=3+1 / (1-D), and the average current of the inductor L

[0107] In the (i+1)-th mode, where 3≤i<N, as Figure 8EAs shown, all fourth switches Q4b and sixth switches Q6a in capacitor branches 22 from level i to level N, all sixth switches Q6b in capacitor branches 22 from level i to level N, and all seventh switches Q7b in capacitor branches 22 from level i+1 to level N are turned on. Meanwhile, all fourth switches Q1, second switches Q2, third switches Q3, fourth switches Q4a, all fourth switches Q4b in capacitor branches 22 from level i-1 to level i-1, fifth switches Q5a, N-1 fifth switches Q5b, all sixth switches Q6b and seventh switches Q7a in capacitor branches 22 from level i+1 to level N, and all seventh switches Q7b in capacitor branches 22 from level i to level i are turned off. All the second capacitors C2 in the (i+1)th stage capacitor branch 22 to the Nth stage capacitor branch 22 are connected in parallel and then connected in series with all the second capacitors C2, the first capacitor C1, and the inductor L in the (i+1)th stage capacitor branch 22 to the first stage capacitor branch 22 to form a power supply component. The power supply component provides voltage to the output terminal OUT. Here, the (i+1)th mode is the i+1 times boost mode, which means that when the first capacitor C1 and N second capacitors C2 discharge, N-i+1 second capacitors C2 are connected in parallel and then connected in series with i-1 second capacitors C2 and the first capacitor C1. The total voltage is equal to (i+1)*Vin. The gain G of the hybrid voltage conversion circuit 100 in the i+1 times boost mode is G = Vout / Vin = (i+1) + 1 / (1-D), and the average current of the inductor L is...

[0108] In the N+1th mode, such as Figure 8F As shown, in the Nth stage capacitor branch 22, the fourth switch Q4b, the sixth switch Q6a, and N-1 sixth switches Q6b are all turned on, while the first switch Q1, the second switch Q2, the third switch Q3, the fourth switch Q4a, and all the fourth switches Q4b, the fifth switch Q5a, N-1 fifth switches Q5b, the seventh switch Q7a, and N-1 seventh switches Q7b in the first N-1 capacitor branch 22 are turned off. The inductor L is connected in series with the first capacitor C1 and N second capacitors C2 to form a power supply component. The power supply component provides voltage to the output terminal OUT. The N+1 mode here is the N+1 times boost mode, which means that when the first capacitor C1 and the N second capacitors C2 discharge, the total voltage of the N series-connected second capacitors C2 and the first capacitor C1 is equal to (N+1)*Vin. The gain of the hybrid voltage converter circuit 100 in N+1 boost mode is G = Vout / Vin = (N+1) + 1 / (1-D), and the average current of the inductor L is...

[0109] This application also provides a hybrid voltage converter, which includes the hybrid voltage conversion circuit 100 provided in any of the above embodiments.

[0110] The hybrid voltage converter provided in this application embodiment can be a charger or a transformer, or other devices capable of voltage conversion. This application embodiment does not impose specific limitations on this.

[0111] The hybrid voltage converter provided in this application includes the hybrid voltage conversion circuit 100 provided in any of the above embodiments, and has the same functional modules and beneficial effects as the hybrid voltage conversion circuit 100, which will not be described again here.

[0112] The above-disclosed embodiments are merely specific examples of this application. However, the embodiments of this application are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of this application.

[0113] The term "comprising" as used in this application does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This application can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims listing several means, several units of these means may be embodied by the same item of hardware. The use of "first," "second," and "third," etc., does not indicate any order and should be interpreted as names. Unless otherwise specified, the steps in the above embodiments should not be construed as limiting the order of execution.

[0114] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A hybrid voltage conversion circuit, characterized by, include: A mixed branch and at least one capacitor branch; The hybrid branch includes an inductor, a first capacitor, and a first switching assembly. The first terminal of the first switching assembly is electrically connected to the first terminal of the inductor and the first terminal of the hybrid voltage conversion circuit. The second terminal of the first switching assembly is electrically connected to the first plate of the first capacitor. The third terminal of the first switching assembly is electrically connected to the second terminal of the inductor and the second plate of the first capacitor. The fourth terminal of the first switching assembly is electrically connected to the second terminal of the hybrid voltage conversion circuit. The fifth terminal of the first switching assembly is grounded. Each of the capacitor branches includes a second switching assembly and a second capacitor, the switching assembly including the first switching assembly and all of the second switching assemblies; The first switching assembly includes: a first switching transistor, a second switching transistor, and a third switching transistor; The first terminal of the first switching transistor is electrically connected to the second terminal of the hybrid voltage conversion circuit, the second terminal of the first switching transistor is electrically connected to the first terminal of the second switching transistor and the first plate of the first capacitor, the second terminal of the second switching transistor is electrically connected to the first terminal of the inductor, the second terminal of the inductor is electrically connected to the second plate of the first capacitor and the first terminal of the third switching transistor, and the second terminal of the third switching transistor is grounded. The hybrid voltage conversion circuit includes one of the capacitor branches; The second switching assembly includes a fourth switching transistor, a fifth switching transistor, a sixth switching transistor, and a seventh switching transistor; The first end of the fourth switch is electrically connected to the first end of the first switch, the second end of the fourth switch is electrically connected to the first plate of the second capacitor and the first end of the fifth switch, the second end of the fifth switch is electrically connected to the first end of the inductor, the second plate of the second capacitor is electrically connected to the first end of the sixth switch and the first end of the seventh switch, the second end of the sixth switch is electrically connected to the first plate of the first capacitor, and the second end of the seventh switch is electrically connected to the second plate of the first capacitor. The switching assembly is configured to, in a first state, control the inductor, the first capacitor, and each of the second capacitors to be connected in parallel; and in a second state, control the inductor and the first capacitor to be connected in series, the inductor and each of the second capacitors to be connected in series, and control the connection relationship between the first capacitor and each of the second capacitors. The hybrid voltage conversion circuit is used to increase the voltage at the first terminal of the hybrid voltage conversion circuit to different voltages, or decrease the voltage at the second terminal of the hybrid voltage conversion circuit to different voltages, based on the different connection relationships between the first capacitor and each of the second capacitors.

2. The hybrid voltage conversion circuit of claim 1, wherein, The first terminal of the hybrid voltage conversion circuit is electrically connected to the input voltage. The hybrid voltage conversion circuit is used to increase the input voltage to different output voltages based on the different connection relationships between the first capacitor and each of the second capacitors. The switching assembly is used to control the inductor, the first capacitor, and each of the second capacitors to be connected in parallel when the inductor is charging; and to control the inductor and the first capacitor to be connected in series when the inductor is discharging, and to control the connection relationship between the first capacitor and each of the second capacitors.

3. The hybrid voltage conversion circuit of claim 1, wherein, The second terminal of the hybrid voltage conversion circuit is electrically connected to the input voltage. The hybrid voltage conversion circuit is used to reduce the input voltage to different output voltages based on the different connection relationships between the first capacitor and each of the second capacitors. The switching assembly is used to control the inductor and the first capacitor to be connected in series in the inductor charging state, and the inductor and each of the second capacitors to be connected in series, and to control the connection relationship between the first capacitor and each of the second capacitors; and to control the inductor, the first capacitor and each of the second capacitors to be connected in parallel in the inductor discharging state.

4. The hybrid voltage conversion circuit of claim 1, wherein, The hybrid voltage conversion circuit includes N capacitor branches, where N is an integer greater than or equal to 2; Each of the second switching components includes a fourth switching transistor, a fifth switching transistor, a sixth switching transistor, and a seventh switching transistor; For each of the capacitor branches: the first terminal of the fourth switch is electrically connected to the first terminal of the first switch, the second terminal of the fourth switch is electrically connected to the first plate of the second capacitor and the first terminal of the fifth switch, the second terminal of the fifth switch is electrically connected to the first terminal of the inductor, and the second plate of the second capacitor is electrically connected to the first terminal of the sixth switch and the first terminal of the seventh switch; For the first-level capacitor branch: the second terminal of the sixth switch is electrically connected to the first plate of the first capacitor, and the second terminal of the seventh switch is electrically connected to the second plate of the first capacitor; wherein, the first-level capacitor branch is the one closest to the hybrid branch among all the capacitor branches; For the capacitor branches in other stages: the second terminal of the sixth switch is electrically connected to the first plate of the second capacitor in the capacitor branch of the previous stage, and the second terminal of the seventh switch is electrically connected to the second plate of the second capacitor in the capacitor branch of the previous stage.

5. The hybrid voltage conversion circuit of claim 1, wherein, In the first state, the second switch, the third switch, the fifth switch, and the seventh switch are all turned on, while the first switch, the fourth switch, and the sixth switch are all turned off.

6. The hybrid voltage conversion circuit of claim 1, wherein, The second state includes a first mode and a second mode; In the first mode, the first switch, the fourth switch, and the seventh switch are all turned on, while the second switch, the third switch, the fifth switch, and the sixth switch are all turned off. In the second mode, both the fourth and sixth switches are turned on, while the first, second, third, fifth, and seventh switches are all turned off.

7. The hybrid voltage conversion circuit of claim 4, wherein, In the first state, the second switching tube, the third switching tube, the fifth switching tube in each of the capacitor branches and the seventh switching tube in each of the capacitor branches are all conducted, and the first switching tube, the fourth switching tube in each of the capacitor branches and the sixth switching tube in each of the capacitor branches are all cut off.

8. The hybrid voltage conversion circuit of claim 4, wherein, The second state includes N+1 modes; In the first mode, the first switching tube, the fourth switching tube in each of the capacitor branches and the seventh switching tube in each of the capacitor branches are all conducted, and the second switching tube, the third switching tube, the fifth switching tube in each of the capacitor branches and the sixth switching tube in each of the capacitor branches are all cut off; In the (i+1)-th mode, the first capacitor and all the second capacitors in the capacitor branches from the first stage to the i-th stage are connected in series in sequence, and all the second capacitors in the capacitor branches from the i-th stage to the N-th stage are connected in parallel with each other; wherein 1 < i ≤ N, and i is an integer.

9. A hybrid voltage converter characterized by, Comprises the hybrid voltage conversion circuit according to any one of claims 1 to 8.

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