CN114342237A - Negative bootstrap circuit, micro-energy device and control method thereof - Google Patents
Negative bootstrap circuit, micro-energy device and control method thereof Download PDFInfo
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- CN114342237A CN114342237A CN202180003341.2A CN202180003341A CN114342237A CN 114342237 A CN114342237 A CN 114342237A CN 202180003341 A CN202180003341 A CN 202180003341A CN 114342237 A CN114342237 A CN 114342237A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Transmitters (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a negative bootstrap circuit, micro energy equipment and a control method thereof; the grid electrode of the first switching tube is connected to the first control end of the negative bootstrap circuit, the grid electrode of the third switching tube and the grid electrode of the fourth switching tube are connected to the second control end of the negative bootstrap circuit, the grid electrode of the fifth switching tube and the grid electrode of the sixth switching tube are connected to the third control end of the negative bootstrap circuit, the positive electrode of the first energy storage component 11 is connected with the drain electrode of the first switching tube and the power supply end of the radio frequency component 10, the source electrode of the first switching tube is connected with the drain electrode of the third switching tube, the drain electrode of the fifth switching tube and the positive electrode of the third energy storage component 13, the source electrode of the third switching tube is connected with the source electrode of the fourth switching tube and the positive electrode of the second energy storage component 12, and the source electrode of the fifth switching tube, the source electrode of the sixth switching tube, the negative electrode of the second energy storage component 12 and the ground end of the radio frequency component 10 are connected to a signal ground; the bootstrap circuit is prevented from failing.
Description
Technical Field
The application belongs to the field of weak energy collection, and particularly relates to a negative bootstrap circuit, micro-energy equipment and a control method of the negative bootstrap circuit.
Background
In the field of weak energy collection, the energy use efficiency is very low, for example, a pressing collection circuit is taken, micro-energy alternating current is obtained through pressing, and then micro-energy voltage is generated according to the micro-energy alternating current, and in one period, from 0V to the highest point, the micro-energy voltage at the highest point is determined by the size of an energy storage capacitor. During the period of 0V rising to 2V, the charge stored in the capacitor can not be utilized, and the chip (including a microprocessor and a radio frequency chip) can not work. Therefore, a bootstrap circuit is required to perform voltage doubling to improve the energy utilization efficiency.
According to the related technical scheme, a positive bootstrap circuit is adopted, namely one end of a system capacitor is used as the positive pole of bootstrap voltage, one end of a chip capacitor is used as the negative pole of the bootstrap voltage, a diode needs to be configured in the bootstrap mode to prevent current from flowing backwards, a plurality of switching tubes are needed to communicate the bootstrap voltage and the chip capacitor, and the voltage drop of the bootstrap voltage is large due to the impedance effect of the PN junctions of the plurality of switching tubes and the diode, so that the bootstrap circuit is easy to fail.
Disclosure of Invention
The application provides a negative bootstrap circuit, a micro-energy device and a control method thereof, aiming at solving the problem that the bootstrap circuit is easy to fail due to the fact that the voltage drop of bootstrap voltage is large under the action of impedance of PN junctions of a plurality of switching tubes and diodes in the related technology.
In order to solve the technical problem, the embodiment of the application adopts the following technical scheme:
the embodiment of the application provides a negative bootstrap circuit, which comprises a radio frequency component, a first energy storage component, a second energy storage component, a third energy storage component, a first switch tube, a third switch tube, a fourth switch tube, a fifth switch tube and a sixth switch tube;
the grid electrode of the first switching tube is connected to the first control end of the negative bootstrap circuit, the grid electrode of the third switching tube and the grid electrode of the fourth switching tube are connected to the second control end of the negative bootstrap circuit together, the grid electrode of the fifth switching tube and the grid electrode of the sixth switching tube are connected to the third control end of the negative bootstrap circuit in common, the anode of the first energy storage component is connected with the drain of the first switch tube and the power supply end of the radio frequency component, the source electrode of the first switching tube is connected with the drain electrode of the third switching tube, the drain electrode of the fifth switching tube and the anode of the third energy storage component, the source electrode of the third switching tube is connected with the source electrode of the fourth switching tube and the anode of the second energy storage component, the source electrode of the fifth switching tube, the source electrode of the sixth switching tube, the cathode of the second energy storage component and the grounding end of the radio frequency component are connected to a signal ground in common; and the drain electrode of the fourth switching tube, the drain electrode of the sixth switching tube, the cathode of the first energy storage assembly and the cathode of the third energy storage assembly are connected to a power ground in common.
The embodiment of the application also provides micro energy equipment which comprises the negative bootstrap circuit.
An embodiment of the present application further provides a control method of the negative bootstrap circuit, including:
inputting a first control signal, a third control signal and a sixth control signal, wherein the first switching tube is communicated with the first energy storage assembly and the third energy storage assembly according to the first control signal so that the third energy storage assembly is charged according to the power supply voltage output by the first energy storage assembly and generates a third voltage, the sixth switching tube is communicated with the cathode of the second energy storage assembly and a power ground according to the sixth control signal, and the third switching tube is communicated with the second energy storage assembly and the first switching tube according to the third control signal so that the second energy storage assembly is charged according to the power supply voltage and generates a second voltage;
inputting a second control signal, a fourth control signal and a fifth control signal, wherein the first switching tube is cut off according to the second control signal, the third switching tube is cut off according to the fourth control signal, the sixth switching tube is cut off according to the fifth control signal, and the fourth switching tube is communicated with the cathode of the first energy storage assembly and the anode of the second energy storage assembly according to the fourth control signal so that the first energy storage assembly and the second energy storage assembly are connected in series to generate a bootstrap voltage;
the radio frequency component generates a wireless communication signal according to the bootstrap voltage and the data signal and sends the wireless communication signal from a wireless link.
The beneficial effect that technical scheme that this application provided brought is: the grid electrode of the first switching tube is connected to the first control end of the negative bootstrap circuit, the grid electrode of the third switching tube and the grid electrode of the fourth switching tube are connected to the second control end of the negative bootstrap circuit together, the grid electrode of the fifth switching tube and the grid electrode of the sixth switching tube are connected to the third control end of the negative bootstrap circuit together, the positive electrode of the first energy storage component is connected with the drain electrode of the first switching tube and the power end of the radio frequency component, the source electrode of the first switching tube is connected with the drain electrode of the third switching tube, the drain electrode of the fifth switching tube and the positive electrode of the third energy storage component, the source electrode of the third switching tube is connected with the source electrode of the fourth switching tube and the positive electrode of the second energy storage component, and the source electrode of the fifth switching tube, the source electrode of the sixth switching tube, the negative electrode of the second energy storage component and the ground end of the radio frequency component are connected to a signal ground together; the drain electrode of the fourth switching tube, the drain electrode of the sixth switching tube, the cathode of the first energy storage assembly and the cathode of the third energy storage assembly are connected to a power ground in common; because the negative bootstrap mode does not need to be provided with a diode to prevent the current from flowing backwards, and only one switching tube (a fourth switching tube Q4) is needed to communicate the first energy storage assembly and the second energy storage assembly, the voltage drop of the bootstrap voltage caused by the impedance of PN junctions of a plurality of switching tubes and diodes is avoided being large, and the bootstrap circuit is prevented from failing.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic circuit structure diagram of a negative bootstrap circuit provided in an embodiment of the present application;
fig. 2 is a schematic circuit diagram of another circuit structure of a negative bootstrap circuit provided in the embodiment of the present application;
fig. 3 is a diagram illustrating a relationship between a voltage and time generated by a negative bootstrap circuit when a power supply voltage is reset and when the power supply voltage is not reset according to an embodiment of the present application;
fig. 4 is a schematic circuit diagram of another circuit structure of a negative bootstrap circuit provided in the embodiment of the present application;
fig. 5 is a schematic circuit diagram of another circuit structure of a negative bootstrap circuit provided in the embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can 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 be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Fig. 1 shows an exemplary circuit structure of a negative bootstrap circuit provided in an embodiment of the present application, and for convenience of explanation, only the parts related to the embodiment of the present application are shown, and detailed descriptions are as follows:
a negative bootstrap circuit comprises 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 switch tube Q1, a third switch tube Q3, a fourth switch tube Q4, a fifth switch tube Q5 and a sixth switch tube Q6;
the grid electrode of the first switching tube Q1 is connected to the first control end of the negative bootstrap circuit, the grid electrode of the third switching tube Q3 and the grid electrode of the fourth switching tube Q4 are connected to the second control end of the negative bootstrap circuit, the grid electrode of the fifth switching tube Q5 and the grid electrode of the sixth switching tube Q6 are connected to the third control end of the negative bootstrap circuit, the positive electrode of the first energy storage component 11 is connected to the drain electrode of the first switching tube Q1 and the power supply end of the radio frequency component 10, the source electrode of the first switching tube Q1 is connected to the drain electrode of the third switching tube Q3, the drain electrode of the fifth switching tube Q5 and the positive electrode of the third energy storage component 13, the source electrode of the third switching tube Q3 is connected to the source electrode of the fourth switching tube Q4 and the positive electrode of the second energy storage component 12, the source electrode of the fifth switching tube Q5, the source of the sixth switching tube Q6, the cathode of the second energy storage component 12 and the ground terminal of the radio frequency component 10 are commonly connected to the signal ground; the drain electrode of the second switching tube Q2, the drain electrode of the fourth switching tube Q4, the drain electrode of the sixth switching tube Q6, the cathode of the first energy storage assembly 11 and the cathode of the third energy storage assembly 13 are connected to the power ground in common.
In a specific implementation, the first energy storage component 11 is configured to output a supply voltage; the first switching tube Q1 is communicated with the first energy storage assembly 11 and the third energy storage assembly 13 according to the first control signal so that the third energy storage assembly 13 charges according to the supply voltage and generates a third voltage, the sixth switching tube Q6 is communicated with the negative electrode of the second energy storage assembly 12 and the power ground according to the sixth control signal, and the third switching tube Q3 is communicated with the second energy storage assembly 12 and the first switching tube Q1 according to the third control signal so that the second energy storage assembly 12 charges according to the supply voltage and generates a second voltage; the first switching tube Q1 is cut off according to the second control signal, the third switching tube Q3 is cut off according to the fourth control signal, the sixth switching tube Q6 is cut off according to the fifth control signal, and the fourth switching tube Q4 communicates the negative electrode of the first energy storage assembly 11 and the positive electrode of the second energy storage assembly 12 according to the fourth control signal so that the first energy storage assembly 11 and the second energy storage assembly 12 are connected in series to generate a bootstrap voltage; the radio frequency assembly 10 is configured to generate a wireless communication signal from the bootstrap voltage and the data signal and to transmit the wireless communication signal from the wireless link.
Because this negative bootstrap mode need not to dispose the diode in order to prevent the electric current from flowing backward, only need a switch tube (fourth switch tube Q4) to communicate first energy storage component 11 and second energy storage component 12 simultaneously, avoided the effect of the impedance of the PN junction of a plurality of switch tubes and diode to lead to the voltage drop of bootstrap voltage great, prevented that the bootstrap circuit from becoming invalid.
It is noted that 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 in one chip; or
The radio frequency component 10, the first switch transistor Q1, the third switch transistor Q3, the fourth switch transistor Q4, the fifth switch transistor Q5 and the sixth switch transistor Q6 are integrated in one chip.
As shown in fig. 2, the negative bootstrap circuit further includes a second switch Q2; the gate of the second switch Q2 is commonly connected to the first control terminal of the negative bootstrap circuit, the source of the second switch Q2 is connected to the positive electrode of the first energy storage device 11, the drain of the first switch Q1 and the power source terminal of the rf device 10, and the drain of the second switch Q2 is connected to the power ground.
In a specific implementation, after the radio frequency assembly 10 transmits the wireless communication signal, the second switch Q2 connects the first energy storage assembly 11 and the power ground according to the second control signal to release the supply voltage.
After the radio frequency assembly 10 sends the wireless communication signal, the second switching tube Q2 connects the first energy storage assembly 11 and the power ground according to the second control signal to release the power supply voltage, so as to consume the residual charge, and the power supply voltage is restored to 0V (power supply voltage reset), thereby preventing the problem that the sending of the wireless communication signal by the ground system is unstable due to the superposition of the residual power supply voltage and the regenerated power supply voltage.
Taking the negative bootstrap circuit for collecting the power supply voltage by pressing as an example, fig. 3 shows a relationship diagram of voltage and time generated by the negative bootstrap circuit by pressing under two conditions of power supply voltage reset and power supply voltage no-reset, respectively.
The upper graph of fig. 3 is a graph of voltage and time generated by pressing under the condition that the power supply voltage is not reset, the voltage generated by one pressing is between 0 and T1a, the V axis A is a voltage trigger point, the power supply voltage reaches the point A, and the radio frequency circuit sends a wireless communication signal. 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 continuously pressed, after the first key is pressed to send a code, the power supply voltage returns to the value B, then the key is pressed again, the generated charges enable the power supply voltage to be superposed on the value B, the power supply voltage can reach the point A at the moment of pressing the key, and the power supply voltage can reach the point A again at the moment of releasing the key, so that wireless communication signals are transmitted twice through T1d and T2d in the figure. When the key is not continuously pressed, after the code sending is completed by the key for the first time, the power supply voltage returns to the value B, then due to the discharging effect, the power supply voltage returns to 0V, when the key is pressed again, the generated charges enable the power supply voltage to be superposed on the value 0V, the power supply voltage can reach the point A at the moment of pressing the release key after the key is pressed, and therefore the wireless communication signal is sent once when the key is pressed again. Therefore, the problem of unstable system code sending is caused.
In the embodiment of the application, when T2c is performed, the residual charges in the first storage component are actively discharged, as shown in the lower diagram of fig. 3, so that the power supply voltage is restored to 0V (power supply voltage is reset), the superposition of the residual charges cannot be generated by subsequent continuous key pressing, the whole key pressing process stably sends a wireless communication signal only once, and the problem that the wireless communication signal sent by the system is unstable is solved.
It is 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 into 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 in one chip.
When 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 in a chip, an exemplary circuit structure of the negative bootstrap circuit is shown in fig. 4.
In fig. 4, the source of the second switch Q2 and the drain of the first switch Q1 are commonly connected to the first capacitor PC1 of the chip 20, the source of the first switch Q1, the drain of the third switch Q3 and the drain of the fifth switch Q5 are commonly connected to the third capacitor PC3 of the chip 20, the source of the third switch Q3 and the source of the fourth switch Q4 are commonly connected to the second capacitor 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 AGND of the chip 20, and the drain of the second switch Q2, the drain of the fourth switch Q4 and the drain of the sixth switch Q6 are commonly connected to the power ground.
The signal ground terminal AGND of the chip 20 is connected to the cathode 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 anode of the second energy storage component 12, the third capacitor terminal PC3 of the chip 20 is connected to the anode of the third energy storage component 13, the first capacitor terminal PC1 of the chip 20 is connected to the power terminal of the radio frequency component 10 and the anode of the first energy storage component 11, and the cathode of the first energy storage component 11 and the cathode of the third energy storage component 13 are commonly connected to the power ground.
When 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 in one chip 20, an exemplary circuit structure of the negative bootstrap circuit is shown in fig. 5.
In fig. 5, the power supply terminal of the rf component 10, the source of the second switch Q2, and the drain of the first switch Q1 are commonly connected to the first capacitor terminal PC1 of the chip 20, the source of the first switch Q1, the drain of the third switch Q3, and the drain of the fifth switch Q5 are commonly connected to the third capacitor terminal PC3 of the chip 20, the source of the third switch Q3 and the source of the fourth switch Q4 are commonly connected to the second capacitor terminal PC2 of the chip 20, the ground terminal of the rf component 10, 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, and the drain of the second switch Q2, the drain of the fourth switch Q4, and the drain of the sixth switch Q6 are commonly connected to the power ground.
The signal ground terminal AGND of the chip 20 is connected to the cathode of the second energy storage assembly 12, the second capacitor terminal PC2 of the chip 20 is connected to the anode of the second energy storage assembly 12, the third capacitor terminal PC3 of the chip 20 is connected to the anode of the third energy storage assembly 13, the first capacitor terminal PC1 of the chip 20 is connected to the anode of the first energy storage assembly 11, and the cathode of the first energy storage assembly 11 and the cathode of the third energy storage assembly 13 are connected to the power ground in common.
By way of example and not limitation, 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 all field effect transistors.
By way of example and not limitation, the first energy storage assembly 11 includes a first capacitor C1, the second energy storage assembly 12 includes a second capacitor C2, and the third energy storage assembly 13 includes a third capacitor C3.
The embodiment of the present application further provides a control method of the negative bootstrap circuit shown in fig. 1 or 2, including steps 101 to 103.
Step 101: the first control signal, the third control signal and the sixth control signal are input, the first switch tube Q1 is communicated with the first energy storage assembly and the third energy storage assembly according to the first control signal so that the third energy storage assembly is charged according to the power supply voltage output by the first energy storage assembly and generates a third voltage, the sixth switch tube Q6 is communicated with the negative electrode of the second energy storage assembly and the power ground according to the sixth control signal, and the third switch tube Q3 is communicated with the second energy storage assembly and the first switch tube Q1 according to the third control signal so that the second energy storage assembly is charged according to the power supply voltage and generates a second voltage.
Step 102: the second control signal, the fourth control signal and the fifth control signal are input, the first switch tube Q1 is cut off according to the second control signal, the third switch tube Q3 is cut off according to the fourth control signal, the sixth switch tube Q6 is cut off according to the fifth control signal, and the fourth switch tube Q4 is communicated with the negative electrode of the first energy storage component and the positive electrode 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 and generate bootstrap voltage.
Step 103: the radio frequency component generates a wireless communication signal from the bootstrap voltage and the data signal and transmits the wireless communication signal from the wireless link.
In a specific implementation, the control method of the negative bootstrap circuit shown in fig. 2 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 switching tube Q2 is communicated with the first energy storage component and the power ground according to the second control signal to release the supply voltage.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (12)
1. A negative bootstrap circuit is characterized by comprising a radio frequency component, a first energy storage component, a second energy storage component, a third energy storage component, a first switch tube, a third switch tube, a fourth switch tube, a fifth switch tube and a sixth switch tube;
the grid electrode of the first switching tube is connected to the first control end of the negative bootstrap circuit, the grid electrode of the third switching tube and the grid electrode of the fourth switching tube are connected to the second control end of the negative bootstrap circuit together, the grid electrode of the fifth switching tube and the grid electrode of the sixth switching tube are connected to the third control end of the negative bootstrap circuit in common, the anode of the first energy storage component is connected with the drain of the first switch tube and the power supply end of the radio frequency component, the source electrode of the first switching tube is connected with the drain electrode of the third switching tube, the drain electrode of the fifth switching tube and the anode of the third energy storage component, the source electrode of the third switching tube is connected with the source electrode of the fourth switching tube and the anode of the second energy storage component, the source electrode of the fifth switching tube, the source electrode of the sixth switching tube, the cathode of the second energy storage component and the grounding end of the radio frequency component are connected to a signal ground in common; and the drain electrode of the fourth switching tube, the drain electrode of the sixth switching tube, the cathode of the first energy storage assembly and the cathode of the third energy storage assembly are connected to a power ground in common.
2. The negative bootstrap circuit of claim 1, wherein the first energy storage component is configured to output a supply voltage;
the first switching tube is communicated with the first energy storage assembly and the third energy storage assembly according to a first control signal so that the third energy storage assembly is charged according to the power supply voltage and generates a third voltage, the sixth switching tube is communicated with the negative electrode of the second energy storage assembly and a power ground according to a sixth control signal, and the third switching tube is communicated with the second energy storage assembly and the first switching tube according to a third control signal so that the second energy storage assembly is charged according to the power supply voltage and generates a second voltage;
the first switching tube is cut off according to a second control signal, the third switching tube is cut off according to a fourth control signal, the sixth switching tube is cut off according to a fifth control signal, and the fourth switching tube is communicated with the negative electrode of the first energy storage assembly and the positive electrode of the second energy storage assembly according to the fourth control signal so that the first energy storage assembly and the second energy storage assembly are connected in series to generate bootstrap voltage;
the radio frequency component is configured to generate a wireless communication signal from the bootstrap voltage and a data signal and to transmit the wireless communication signal from a wireless link.
3. The negative bootstrap circuit of claim 1, wherein the first switch tube, the third switch tube, the fourth switch tube, the fifth switch tube and the sixth switch tube are integrated in one chip.
4. The negative bootstrap circuit of 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 sixth switch tube are integrated in one chip.
5. The negative bootstrap circuit of claim 2, further comprising a second switch tube; the grid electrode of the second switch tube is commonly connected to the first control end of the negative bootstrap circuit, the source electrode of the second switch tube is connected with the positive electrode of the first energy storage component, the drain electrode of the first switch tube and the power supply end of the radio frequency component, and the drain electrode of the second switch tube is connected with the power supply ground.
6. The negative bootstrap circuit of claim 5, wherein after the radio frequency component sends the wireless communication signal, the second switch tube connects the first energy storage component and a power ground to release the supply voltage according to a second control signal.
7. The negative bootstrap circuit of claim 5, wherein the first switch tube, the second switch tube, the third switch tube, the fourth switch tube, the fifth switch tube and the sixth switch tube are integrated in one chip.
8. The negative bootstrap circuit of claim 5, wherein the radio frequency component, the first switch tube, the second switch tube, the third switch tube, the fourth switch tube, the fifth switch tube and the sixth switch tube are integrated in one chip.
9. The negative bootstrap circuit as recited in claim 5, wherein said first switch tube, said second switch tube, said third switch tube, said fourth switch tube, said fifth switch tube and said sixth switch tube are all field effect transistors.
10. A micro energy device comprising a negative bootstrap circuit as claimed in any one of claims 1 to 9.
11. A method for controlling a negative bootstrap circuit recited in any one of claims 1 to 9, characterized by comprising:
inputting a first control signal, a third control signal and a sixth control signal, wherein the first switching tube is communicated with the first energy storage assembly and the third energy storage assembly according to the first control signal so that the third energy storage assembly is charged according to the power supply voltage output by the first energy storage assembly and generates a third voltage, the sixth switching tube is communicated with the cathode of the second energy storage assembly and a power ground according to the sixth control signal, and the third switching tube is communicated with the second energy storage assembly and the first switching tube according to the third control signal so that the second energy storage assembly is charged according to the power supply voltage and generates a second voltage;
inputting a second control signal, a fourth control signal and a fifth control signal, wherein the first switching tube is cut off according to the second control signal, the third switching tube is cut off according to the fourth control signal, the sixth switching tube is cut off according to the fifth control signal, and the fourth switching tube is communicated with the cathode of the first energy storage assembly and the anode of the second energy storage assembly according to the fourth control signal so that the first energy storage assembly and the second energy storage assembly are connected in series to generate a bootstrap voltage;
the radio frequency component generates a wireless communication signal according to the bootstrap voltage and the data signal and sends the wireless communication signal from a wireless link.
12. The method for controlling a negative bootstrap circuit recited in claim 11, further comprising:
after the radio frequency assembly sends the wireless communication signal, a second control signal is input, and the second switching tube is communicated with the first energy storage assembly and the power ground according to the second control signal to release power supply voltage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2021/130038 WO2023082135A1 (en) | 2021-11-11 | 2021-11-11 | Negative bootstrap circuit, micro-energy device, and control method for negative bootstrap circuit |
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| CN114342237A true CN114342237A (en) | 2022-04-12 |
| CN114342237B CN114342237B (en) | 2023-01-24 |
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Citations (5)
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|---|---|---|---|---|
| CN103580290A (en) * | 2013-10-24 | 2014-02-12 | 深圳市迈安杰科技有限公司 | Weak energy collecting and control circuit |
| WO2017149289A1 (en) * | 2016-02-29 | 2017-09-08 | Cambridge Enterprise Limited . | Energy harvesting systems and methods |
| CN208539785U (en) * | 2018-07-26 | 2019-02-22 | 东莞市动力之星电子有限公司 | A kind of negative voltage regulator circuit |
| CN111699607A (en) * | 2020-04-28 | 2020-09-22 | 武文静 | Micro-energy acquisition chip, circuit, equipment and control method thereof |
| CN217010704U (en) * | 2021-11-11 | 2022-07-19 | 武文静 | Negative bootstrap circuit and micro-energy device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410974B (en) * | 2016-12-13 | 2018-11-02 | 苏州瑞铬优电子科技有限公司 | A kind of two-stage energy storage system for wireless sensor node |
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2021
- 2021-11-11 WO PCT/CN2021/130038 patent/WO2023082135A1/en unknown
- 2021-11-11 CN CN202180003341.2A patent/CN114342237B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580290A (en) * | 2013-10-24 | 2014-02-12 | 深圳市迈安杰科技有限公司 | Weak energy collecting and control circuit |
| WO2017149289A1 (en) * | 2016-02-29 | 2017-09-08 | Cambridge Enterprise Limited . | Energy harvesting systems and methods |
| CN208539785U (en) * | 2018-07-26 | 2019-02-22 | 东莞市动力之星电子有限公司 | A kind of negative voltage regulator circuit |
| CN111699607A (en) * | 2020-04-28 | 2020-09-22 | 武文静 | Micro-energy acquisition chip, circuit, equipment and control method thereof |
| CN217010704U (en) * | 2021-11-11 | 2022-07-19 | 武文静 | Negative bootstrap circuit and micro-energy device |
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| Publication number | Publication date |
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| WO2023082135A1 (en) | 2023-05-19 |
| CN114342237B (en) | 2023-01-24 |
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