WO2023082135A1

WO2023082135A1 - Negative bootstrap circuit, micro-energy device, and control method for negative bootstrap circuit

Info

Publication number: WO2023082135A1
Application number: PCT/CN2021/130038
Authority: WO
Inventors: 武文静; 杨苍华
Original assignee: 武文静
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2023-05-19
Also published as: CN114342237A; CN114342237B

Abstract

A negative bootstrap circuit, a micro-energy device, and a control method for a negative bootstrap circuit. A gate electrode of a first switch tube (Q1) is connected to a first control end of the negative bootstrap circuit; a gate electrode of a third switch tube (Q3) and a gate electrode of a fourth switch tube (Q4) are jointly connected to a second control end of the negative bootstrap circuit; a gate electrode of a fifth switch tube (Q5) and a gate electrode of a sixth switch tube (Q6) are jointly connected to a third control end of the negative bootstrap circuit; a positive electrode of a first energy storage assembly (11) is connected to a drain electrode of the first switch tube (Q1) and a power source end of a radio frequency assembly (10); a source electrode of the first switch tube (Q1) is connected to a drain electrode of the third switch tube (Q3), a drain electrode of the fifth switch tube (Q5) and a positive electrode of a third energy storage assembly (13); a source electrode of the third switch tube (Q3) is connected to a source electrode of the fourth switch tube (Q4) and a positive electrode of a second energy storage assembly (12); and a source electrode of the fifth switch tube (Q5), a source electrode of the sixth switch tube (Q6), a negative electrode of the second energy storage assembly (12) and a grounding end of the radio frequency assembly (10) are jointly connected to a signal ground, thereby preventing the bootstrap circuit from malfunction.

Description

Negative bootstrap circuit, micro-energy device and control method thereof

technical field

The application belongs to the field of weak energy collection, and in particular relates to a negative bootstrap circuit, a micro-energy device and a control method thereof.

Background technique

In the field of weak energy collection, the efficiency of energy use is very low. Taking the press collection circuit as an example, the micro-energy alternating current is obtained by pressing, and then the micro-energy voltage is generated according to the micro-energy alternating current. In terms of one cycle, from 0V to the highest point, the highest point The micro energy voltage is determined by the size of the energy storage capacitor. During the period from 0V to 2V, the charge stored in the capacitor cannot be used, and chips (including microprocessors and radio frequency chips) cannot work. Therefore, it is necessary to use a bootstrap circuit for voltage doubling to improve energy efficiency.

The related technical solution adopts a positive bootstrap circuit, that is, one end of the system capacitor is used as the positive pole of the bootstrap voltage, and one end of the chip capacitor is used as the negative pole of the bootstrap voltage. This bootstrap method needs to be equipped with a diode to prevent current from flowing backward, and at the same time connect the bootstrap voltage Multiple switch tubes are required for the chip capacitor and the impedance of the PN junction of multiple switch tubes and diodes leads to a large voltage drop of the bootstrap voltage, which easily leads to failure of the bootstrap circuit.

technical problem

The present application provides a negative bootstrap circuit, a micro-energy device and a control method thereof, aiming to solve the large voltage drop of the bootstrap voltage caused by the impedance of the PN junction of multiple switch tubes and diodes in the related art, Thus, it is easy to cause the failure of the bootstrap circuit.

technical solution

In order to solve the above-mentioned technical problems, the technical solution adopted in the embodiment of the present application is:

An embodiment of the present application provides a negative bootstrap circuit, including a radio frequency component, a first energy storage component, a second energy storage component, a third energy storage component, a first switching tube, a third switching tube, a fourth switching tube, a The fifth switching tube and the sixth switching tube;

The grid of the first switching transistor is connected to the first control terminal of the negative bootstrap circuit, and the grid of the third switching transistor and the gate of the fourth switching transistor are commonly connected to the negative bootstrap circuit. The second control terminal of the circuit, the gate of the fifth switch tube and the gate of the sixth switch tube are commonly connected to the third control terminal of the negative bootstrap circuit, the positive pole of the first energy storage component is connected to the The drain of the first switching tube is connected to the power supply terminal of the radio frequency component, the source of the first switching tube is connected to the drain of the third switching tube, the drain of the fifth switching tube and the The positive pole of the third energy storage component is connected, the source of the third switching tube is connected to the source of the fourth switching tube and the positive pole of the second energy storage component, the source of the fifth switching tube, The source of the sixth switching transistor, the negative electrode of the second energy storage component, and the ground terminal of the radio frequency component are commonly connected to the signal ground; the drain of the fourth switching transistor, the The drain, the negative pole of the first energy storage component and the negative pole of the third energy storage component are commonly connected to the power ground.

An embodiment of the present application also provides a micro-energy device, including the above-mentioned negative bootstrap circuit.

An embodiment of the present application also provides a method for controlling the above-mentioned negative bootstrap circuit, including:

The first control signal, the third control signal and the sixth control signal are input, and the first switch tube communicates with the first energy storage component and the third energy storage component according to the first control signal so that the third energy storage component The power supply voltage output by an energy storage component is charged to generate a third voltage, the sixth switch tube is connected to the negative pole of the second energy storage component and the power ground according to the sixth control signal, and the third switch tube is connected to the second power supply ground according to the third control signal. The energy storage component and the first switch tube enable the second energy storage component to be charged according to the supply voltage and generate a second voltage;

The second control signal, the fourth control signal and the fifth control signal are input, the first switch tube is turned off according to the second control signal, and the third switch tube is turned off according to the fourth control signal, and the sixth switch tube is turned off according to the The fifth control signal is turned off, and the fourth switching tube is connected to the negative pole of the first energy storage component and the positive pole of the second energy storage component according to the fourth control signal to make the first energy storage component and the second energy storage component The components can be connected in series and generate a bootstrap voltage;

A radio frequency component generates a wireless communication signal based on the bootstrap voltage and a data signal and transmits the wireless communication signal from a wireless link.

Beneficial effect

The beneficial effect brought by the technical solution provided by the present application is: the gate of the first switch tube is connected to the first control terminal of the negative bootstrap circuit, and the gate of the third switch tube and the gate of the fourth switch tube are connected together To the second control terminal of the negative bootstrap circuit, the grid of the fifth switching tube and the grid of the sixth switching tube are commonly connected to the third control terminal of the negative bootstrap circuit, the positive pole of the first energy storage component is connected to the first switch The drain of the tube is connected to the power supply terminal of the radio frequency component, the source of the first switch tube is connected to the drain of the third switch tube, the drain of the fifth switch tube and the anode of the third energy storage component, the third switch tube The source is connected to the source of the fourth switching tube and the positive pole of the second energy storage component, and the source of the fifth switching tube, the source of the sixth switching tube, the negative pole of the second energy storage component, and the ground terminal of the radio frequency component are in common Connected to the signal ground; the drain of the fourth switching tube, the drain of the sixth switching tube, the negative pole of the first energy storage component and the negative pole of the third energy storage component are connected to the power supply ground; no configuration is required due to the negative bootstrap method The diode is used to prevent current backflow, and only one switch tube (the fourth switch tube Q4) is needed to connect the first energy storage component and the second energy storage component at the same time, avoiding the effect of the impedance of the PN junction of multiple switch tubes and diodes leading to bootstrap The large voltage drop prevents the bootstrap circuit from failing.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic diagram of a circuit structure of a negative bootstrap circuit provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of another circuit structure of the negative bootstrap circuit provided by the embodiment of the present application;

FIG. 3 is a graph showing the relationship between the voltage and time generated by pressing the negative bootstrap circuit provided by the embodiment of the present application when the power supply voltage is reset and the power supply voltage is not reset;

4 is a schematic diagram of another circuit structure of the negative bootstrap circuit provided by the embodiment of the present application;

FIG. 5 is a schematic diagram of another circuit structure of the negative bootstrap circuit provided by the embodiment of the present application.

Embodiments of the present invention

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device Or elements must have a certain orientation, be constructed and operate in a certain orientation, and thus should not be construed as limiting the application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

Figure 1 shows an example circuit structure of the negative bootstrap circuit provided by the embodiment of the present application. For the convenience of explanation, only the parts related to the embodiment of the present application are shown, and the details are as follows:

A negative bootstrap circuit, comprising a radio frequency component 10, a first energy storage component 11, a second energy storage component 12, a third energy storage component 13, a first switching tube Q1, a third switching tube Q3, and a fourth switching tube Q4 , the fifth switching tube Q5 and the sixth switching tube Q6;

The gate of the first switch Q1 is connected to the first control terminal of the negative bootstrap circuit, the gates of the third switch Q3 and the fourth switch Q4 are commonly connected to the second control terminal of the negative bootstrap circuit, The gate of the fifth switching tube Q5 and the gate of the sixth switching tube Q6 are commonly connected to the third control terminal of the negative bootstrap circuit, the anode of the first energy storage component 11 is connected to the drain of the first switching tube Q1 and the radio frequency component 10, the source of the first switching tube Q1 is connected to the drain of the third switching tube Q3, the drain of the fifth switching tube Q5 and the anode of the third energy storage component 13, and the source of the third switching tube Q3 The pole is connected to the source of the fourth switching tube Q4 and the positive pole of the second energy storage component 12, the source of the fifth switching tube Q5, the source of the sixth switching tube Q6, the negative pole of the second energy storage component 12 and the radio frequency component The ground terminal of 10 is commonly connected to the signal ground; the drain of the second switching tube Q2, the drain of the fourth switching tube Q4, the drain of the sixth switching tube Q6, the negative pole of the first energy storage component 11 and the third energy storage The negative electrodes of the components 13 are commonly connected to the power ground.

In specific implementation, the first energy storage component 11 is configured to output a power supply voltage; the first switch tube Q1 connects the first energy storage component 11 and the third energy storage component 13 according to the first control signal so that the third energy storage component 13 The voltage is charged to generate a third voltage, the sixth switch tube Q6 is connected to the negative electrode of the second energy storage component 12 and the power ground according to the sixth control signal, and the third switch tube Q3 is connected to the second energy storage component 12 according to the third control signal and the first switching tube Q1 so that the second energy storage component 12 is charged according to the supply voltage and generates a second voltage; the first switching tube Q1 is turned off according to the second control signal, and the third switching tube Q3 is turned off according to the fourth control signal, The sixth switch tube Q6 is turned off according to the fifth control signal, and the fourth switch tube Q4 is connected to the negative pole of the first energy storage component 11 and the positive pole of the second energy storage component 12 according to the fourth control signal so that the first energy storage component 11 and the second energy storage component 11 are connected to each other. The two energy storage components 12 are connected in series to generate a bootstrap voltage; the radio frequency component 10 is configured to generate a wireless communication signal according to the bootstrap voltage and the data signal and send the wireless communication signal through the wireless link.

Since the negative bootstrap method does not need to configure a diode to prevent current backflow, only one switching tube (the fourth switching tube Q4) is needed to connect the first energy storage component 11 and the second energy storage component 12 at the same time, avoiding multiple switching tubes and diodes The effect of the impedance of the PN junction leads to a large voltage drop of the bootstrap voltage, which prevents the failure of the bootstrap circuit.

It should be noted that the first switching tube Q1, the third switching tube Q3, the fourth switching tube Q4, the fifth switching tube Q5 and the sixth switching tube Q6 are integrated into one chip; or

The radio frequency component 10 , the first switch tube Q1 , the third switch tube Q3 , the fourth switch tube Q4 , the fifth switch tube Q5 and the sixth switch tube Q6 are integrated into one chip.

As shown in FIG. 2, the above-mentioned negative bootstrap circuit further includes a second switching tube Q2; the gate of the second switching tube Q2 is commonly connected to the first control terminal of the negative bootstrap circuit, and the source of the second switching tube Q2 is connected to the first control terminal of the negative bootstrap circuit. The anode of an energy storage component 11 is connected to the drain of the first switching transistor Q1 and the power supply terminal of the radio frequency component 10 , and the drain of the second switching transistor Q2 is connected to the power ground.

In a specific implementation, after the radio frequency component 10 sends a wireless communication signal, the second switch tube Q2 connects the first energy storage component 11 and the power ground according to the second control signal to release the power supply voltage.

After the radio frequency component 10 sends the wireless communication signal, the second switch tube Q2 connects the first energy storage component 11 and the power supply ground according to the second control signal to release the supply voltage and consume the residual charge, so that the supply voltage returns to 0V (supply voltage reset ), which prevents the problem that the residual power supply voltage and the regenerated power supply voltage are superimposed and cause the wireless communication signal sent by the ground system to be unstable.

Taking the negative bootstrap circuit for collecting power supply voltage by pressing as an example, FIG. 3 shows the relationship between the voltage and time generated by pressing the negative bootstrap circuit when the power supply voltage is reset and the power supply voltage is not reset.

The upper figure in Figure 3 is the relationship between the voltage and time generated by pressing when the power supply voltage is not reset. The voltage generated by one press is between 0 and T1a. A on the V axis is the voltage trigger point. When the power supply voltage reaches point A, The radio frequency circuit sends wireless communication signals. After the wireless communication signal is sent, the power supply voltage returns to point B, and the voltage value of point B is generally close to the reset voltage of the system.

When the keys are pressed continuously, the power supply voltage will return to the B value after the first key press is completed, and then press again, the generated charge will superimpose the power supply voltage on the B value, and the power supply voltage can be made when the key is pressed. When point A is reached, the power supply voltage reaches point A again when the button is released, thus forming T1d and T2d in the figure to send wireless communication signals twice. When non-continuous keys are pressed, the power supply voltage returns to B value after the first key press completes the code sending, and then due to discharge, the power supply voltage returns to 0V, and when it is pressed again, the generated charge will superimpose the power supply voltage above the 0V value , the power supply voltage can reach point A only at the moment when the button is released after the button is pressed, so that the wireless communication signal is sent once when the button is pressed again. Therefore, it leads to the problem of unstable code sending by the system.

In the embodiment of the present application, at T2c, the residual charge in the first storage component is actively discharged, as shown in the lower figure of Figure 3, so that the power supply voltage returns to 0V (power supply voltage reset), and subsequent consecutive keys will not The superposition of residual charges is generated, and only one wireless communication signal is stably sent out during the whole key-press process, which solves the problem of unstable wireless communication signal sent by the system.

It should be noted that the first switching tube Q1, the second switching tube Q2, the third switching tube Q3, the fourth switching tube Q4, the fifth switching tube Q5 and the sixth switching tube Q6 are integrated in one chip; or

The radio frequency component 10 , the first switch tube Q1 , the second switch tube Q2 , the third switch tube Q3 , the fourth switch tube Q4 , the fifth switch tube Q5 and the sixth switch tube Q6 are integrated into one chip.

When the first switching tube Q1, the second switching tube Q2, the third switching tube Q3, the fourth switching tube Q4, the fifth switching tube Q5 and the sixth switching tube Q6 are integrated in one chip, the example circuit structure of the negative bootstrap circuit As shown in Figure 4.

In FIG. 4, the source of the second switching transistor Q2 and the drain of the first switching transistor Q1 are commonly connected to the first capacitance terminal PC1 of the chip 20, the source of the first switching transistor Q1, and the drain of the third switching transistor Q3 pole and the drain of the fifth switching transistor Q5 are commonly connected to the third capacitor terminal PC3 of the chip 20, and the source of the third switching transistor Q3 and the source of the fourth switching transistor Q4 are commonly connected to the second capacitor terminal PC2 of the chip 20 , the source of the fifth switch Q5 and the source of the sixth switch Q6 are commonly connected to the signal ground terminal AGND of the chip 20, the drain of the second switch Q2, the drain of the fourth switch Q4 and the sixth switch The drain of the transistor Q6 is commonly connected to the power ground.

The signal ground terminal AGND of the chip 20 is connected to the negative pole of the second energy storage component 12 and the ground terminal of the radio frequency component 10, the second capacitor terminal PC2 of the chip 20 is connected to the positive pole of the second energy storage component 12, and the third capacitor of the chip 20 Terminal PC3 is connected to the positive pole of the third energy storage component 13, the first capacitor terminal PC1 of the chip 20 is connected to the power supply terminal of the radio frequency component 10 and the positive pole of the first energy storage component 11, the negative pole of the first energy storage component 11 and the third The negative electrodes of the energy storage components 13 are commonly connected to the power ground.

When the radio frequency component 10, the first switching tube Q1, the second switching tube Q2, the third switching tube Q3, the fourth switching tube Q4, the fifth switching tube Q5, and the sixth switching tube Q6 are integrated in one chip 20, the negative bootstrap An example circuit structure of the circuit is shown in Figure 5.

In FIG. 5, the power supply terminal of the radio frequency component 10, the source of the second switching transistor Q2, and the drain of the first switching transistor Q1 are commonly connected to the first capacitor terminal PC1 of the chip 20, and the source of the first switching transistor Q1, The drain of the third switching transistor Q3 and the drain of the fifth switching transistor Q5 are commonly connected to the third capacitor terminal PC3 of the chip 20, and the source of the third switching transistor Q3 and the source of the fourth switching transistor Q4 are commonly connected to the chip. The second capacitor terminal PC2 of 20, the ground terminal of the radio frequency component 10, the source of the fifth switching tube Q5 and the source of the sixth switching tube Q6 are commonly connected to the signal ground terminal AGND of the chip 20, and the drain of the second switching tube Q2 The pole, the drain of the fourth switching transistor Q4 and the drain of the sixth switching transistor Q6 are commonly connected to the power ground.

The signal ground terminal AGND of the chip 20 is connected to the negative pole of the second energy storage component 12, the second capacitor terminal PC2 of the chip 20 is connected to the positive pole of the second energy storage component 12, and the third capacitor terminal PC3 of the chip 20 is connected to the third energy storage component 12. The positive pole of the component 13 is connected, the first capacitor terminal PC1 of the chip 20 is connected with the positive pole of the first energy storage component 11, the negative pole of the first energy storage component 11 and the negative pole of the third energy storage component 13 are connected to the power ground.

As an example but not a limitation, the first switching transistor Q1 , the second switching transistor Q2 , the third switching transistor Q3 , the fourth switching transistor Q4 , the fifth switching transistor Q5 and the sixth switching transistor Q6 are field effect transistors.

As an example but not a limitation, the first energy storage component 11 includes a first capacitor C1, the second energy storage component 12 includes a second capacitor C2, and the third energy storage component 13 includes a third capacitor C3.

The embodiment of the present application also provides a control method for the negative bootstrap circuit as shown in FIG. 1 or 2 , including step 101 to step 103 .

Step 101: Input the first control signal, the third control signal and the sixth control signal, and the first switching tube Q1 connects the first energy storage component and the third energy storage component according to the first control signal so that the third energy storage component The power supply voltage output by an energy storage component is charged to generate a third voltage, and the sixth switch tube Q6 is connected to the negative electrode of the second energy storage component and the power ground according to the sixth control signal, and the third switch tube Q3 is connected to the negative electrode of the second energy storage component according to the third control signal. The second energy storage component is connected to the first switch tube Q1 so that the second energy storage component is charged according to the supply voltage and generates a second voltage.

Step 102: Input the second control signal, the fourth control signal and the fifth control signal, the first switch tube Q1 is turned off according to the second control signal, the third switch tube Q3 is turned off according to the fourth control signal, and the sixth switch tube Q6 is turned off according to the The fifth control signal is turned off, and the fourth switching tube Q4 is connected to the negative pole of the first energy storage component and the positive pole of the second energy storage component according to the fourth control signal so that the first energy storage component and the second energy storage component are connected in series to generate a bootstrap Voltage.

Step 103: The radio frequency component generates a wireless communication signal according to the bootstrap voltage and the data signal, and sends the wireless communication signal through the wireless link.

In a specific implementation, the control method of the negative bootstrap circuit shown in FIG. 2 further includes step 104 in addition to step 101 to step 103 .

Step 104: After the radio frequency component sends the wireless communication signal, a second control signal is input, and the second switch tube Q2 connects the first energy storage component and the power ground according to the second control signal to release the power supply voltage.

It should be understood that the sequence numbers of the steps in the above embodiments do not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.

The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still implement the foregoing embodiments Modifications to the technical solutions described in the examples, or equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application, and should be included in the Within the protection scope of this application.

Claims

A negative bootstrap circuit, characterized in that it includes a radio frequency component, a first energy storage component, a second energy storage component, a third energy storage component, a first switching tube, a third switching tube, a fourth switching tube, a fifth a switch tube and a sixth switch tube;

The grid of the first switching transistor is connected to the first control terminal of the negative bootstrap circuit, and the grid of the third switching transistor and the gate of the fourth switching transistor are commonly connected to the negative bootstrap circuit. The second control terminal of the circuit, the gate of the fifth switch tube and the gate of the sixth switch tube are commonly connected to the third control terminal of the negative bootstrap circuit, the positive pole of the first energy storage component is connected to the The drain of the first switching tube is connected to the power supply terminal of the radio frequency component, the source of the first switching tube is connected to the drain of the third switching tube, the drain of the fifth switching tube and the The positive pole of the third energy storage component is connected, the source of the third switching tube is connected to the source of the fourth switching tube and the positive pole of the second energy storage component, the source of the fifth switching tube, The source of the sixth switching transistor, the negative electrode of the second energy storage component, and the ground terminal of the radio frequency component are commonly connected to the signal ground; the drain of the fourth switching transistor, the The drain, the negative pole of the first energy storage component and the negative pole of the third energy storage component are commonly connected to the power ground.
The negative bootstrap circuit according to claim 1, wherein the first energy storage component is configured to output a supply voltage;

The first switch tube communicates with the first energy storage component and the third energy storage component according to the first control signal so that the third energy storage component is charged according to the power supply voltage and generates a third voltage, so The sixth switch tube is connected to the negative electrode of the second energy storage component and the power ground according to a sixth control signal, and the third switch tube is connected to the second energy storage component and the first switch according to a third control signal a tube to enable the second energy storage component to be charged according to the supply voltage and generate a second voltage;

The first switch tube is turned off according to the second control signal, and the third switch tube is turned off according to the fourth control signal, the sixth switch tube is turned off according to the fifth control signal, and the fourth switch tube is turned off according to the first control signal. Four control signals are connected to the negative pole of the first energy storage component and the positive pole of the second energy storage component so that the first energy storage component and the second energy storage component are connected in series to generate a bootstrap voltage;

The radio frequency component is configured to generate a wireless communication signal based on the bootstrap voltage and a data signal and to transmit the wireless communication signal from a wireless link.
The negative bootstrap circuit according to claim 1, wherein the first switch tube, the third switch tube, the fourth switch tube, the fifth switch tube and the sixth switch tube integrated in one chip.
The negative bootstrap circuit according to claim 1, wherein the radio frequency component, the first switch tube, the third switch tube, the fourth switch tube, the fifth switch tube and the The sixth switch tube is integrated in one chip.
The negative bootstrap circuit according to claim 2, further comprising a second switch tube; the gate of the second switch tube is commonly connected to the first control terminal of the negative bootstrap circuit, and the first The sources of the two switch tubes are connected to the anode of the first energy storage component, the drain of the first switch tube and the power supply terminal of the radio frequency component, and the drain of the second switch tube is connected to the power supply ground.
The negative bootstrap circuit according to claim 5, wherein after the radio frequency component sends the wireless communication signal, the second switching tube connects the first energy storage component and the power ground according to the second control signal to release the supply voltage.
The negative bootstrap circuit according to claim 5, wherein the first switch tube, the second switch tube, the third switch tube, the fourth switch tube, and the fifth switch tube And the sixth switch tube is integrated in one chip.
The negative bootstrap circuit according to claim 5, wherein the radio frequency component, the first switch tube, the second switch tube, the third switch tube, the fourth switch tube, the The fifth switch tube and the sixth switch tube are integrated into one chip.
The negative bootstrap circuit according to any one of claim 5, wherein the first switching tube, the second switching tube, the third switching tube, the fourth switching tube, the The fifth switching transistor and the sixth switching transistor are field effect transistors.
A micro-energy device, characterized by comprising the negative bootstrap circuit according to any one of claims 1-9.
A control method for a negative bootstrap circuit according to any one of claims 1 to 9, characterized in that it comprises:

The first control signal, the third control signal and the sixth control signal are input, and the first switch tube communicates with the first energy storage component and the third energy storage component according to the first control signal so that the third energy storage component The power supply voltage output by an energy storage component is charged to generate a third voltage, the sixth switch tube is connected to the negative pole of the second energy storage component and the power ground according to the sixth control signal, and the third switch tube is connected to the second power supply ground according to the third control signal. The energy storage component and the first switch tube enable the second energy storage component to be charged according to the supply voltage and generate a second voltage;

The second control signal, the fourth control signal and the fifth control signal are input, the first switch tube is turned off according to the second control signal, and the third switch tube is turned off according to the fourth control signal, and the sixth switch tube is turned off according to the The fifth control signal is turned off, and the fourth switching tube is connected to the negative pole of the first energy storage component and the positive pole of the second energy storage component according to the fourth control signal to make the first energy storage component and the second energy storage component The components can be connected in series and generate a bootstrap voltage;

A radio frequency component generates a wireless communication signal based on the bootstrap voltage and a data signal and transmits the wireless communication signal from a wireless link.
The control method of the negative bootstrap circuit according to claim 11, further comprising:

After the radio frequency component sends the wireless communication signal, a second control signal is input, and the second switch transistor connects the first energy storage component and the power ground according to the second control signal to release the power supply voltage.