Efficient and energy-saving voltage synchronization bootstrap tracking circuit

Abstract

The invention discloses a high-efficiency and energy-saving voltage synchronization bootstrap tracking circuit, which relates to the technical field of voltage bootstrap, and comprises a power supply module used for accessing voltage; the first conversion module is used for boosting and transmitting electric energy; the auxiliary power supply module is used for accessing voltage; the second conversion module is used for boosting and transmitting electric energy; the voltage tracking module is used for setting and adjusting an output voltage threshold value and calculating a voltage difference value between the electric energy output by the first change module and the voltage threshold value; the voltage comparison module is used for carrying out equal voltage ratio on the auxiliary power supply module and the voltage difference value; the voltage bootstrap control module is used for storage and electric energy superposition control; the intelligent control module is used for signal receiving and module control; the second output module is used for electric energy receiving control; and the first output module is used for receiving electric energy. The efficient and energy-saving voltage synchronization bootstrap tracking circuit can carry out bootstrap boost work according to the voltage states of the auxiliary power supply module and the power supply module, and the boost efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of voltage bootstrapping, in particular to a voltage synchronous bootstrapping tracking circuit with high efficiency and energy saving. Background Art

[0002] A voltage synchronous bootstrap tracking circuit is a circuit that uses electronic components such as diodes and capacitors to achieve voltage boost by superimposing the capacitor discharge voltage and the power supply voltage. In order to achieve efficient boost control, the boost circuit in the prior art generally adopts a Boost circuit to perform boost work through an inductor. However, since the output voltage of the Boost circuit is limited by the input voltage and the bootstrap boost control cannot be performed, a higher voltage cannot be provided. At the same time, in order to perform energy-saving control, a multi-DC power supply hybrid method is adopted. However, when performing voltage bootstrap control, the circuit power consumption increases due to the inability to reasonably control the operation of the switching element, so it needs to be improved. Summary of the invention

[0003] The embodiment of the present invention provides a voltage synchronous bootstrap tracking circuit with high efficiency and energy saving to solve the problems raised in the above background technology.

[0004] According to an embodiment of the present invention, there is provided a high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit, comprising: a power supply module, a first conversion module, a first output module, an auxiliary power supply module, a second conversion module, a voltage tracking module, a voltage comparison module, a voltage bootstrap control module, a second output module and an intelligent control module;

[0005] A power module, connected to the intelligent control module and the second conversion module, for receiving direct current power, and transmitting the direct current power to the second conversion module upon receiving a first control signal output by the intelligent control module;

[0006] a first conversion module connected to the intelligent control module, the power module, the voltage bootstrap control module and the first output module, and configured to boost the DC power and output the first power when receiving the first pulse signal output by the intelligent control module, and directly transmit the DC power to the voltage bootstrap control module and the first output module when not receiving the first pulse signal;

[0007] Auxiliary power supply module, used to access DC voltage regulation and provide a second electric energy;

[0008] a second conversion module, connected to the auxiliary power module, the intelligent control module, the voltage bootstrap control module and the second output module, for boosting the second electric energy or the DC electric energy and outputting the third electric energy when receiving the second pulse signal output by the intelligent control module, and directly transmitting the second electric energy or the DC electric energy to the voltage bootstrap control module and the second output module when not receiving the second pulse signal;

[0009] A voltage tracking module, connected to the intelligent control module and the first output module, for setting an output voltage threshold upon receiving a first adjustment signal output by the intelligent control module, sampling the electric energy input to the first output module and calculating a voltage difference between the output voltage threshold and the sampled signal, and outputting a first difference signal;

[0010] A voltage comparison module, connected to the auxiliary power module and the voltage tracking module, for sampling the DC power or the second power and outputting a first sampling signal, and determining whether the voltage of the first difference signal is equal to that of the first sampling signal, whether the voltage of the first difference signal is equal to that of the first sampling signal, and outputting a second control signal when the voltages are equal;

[0011] a voltage bootstrap control module, connected to the intelligent control module, and used to store the DC power output by the first conversion module, and store the third power, the second power or the DC power output by the second conversion module, and when receiving the bootstrap signal output by the intelligent control module, superimpose the third power, the second power or the DC power output by the second conversion module and the DC power output by the first conversion module, and output the fourth power;

[0012] an intelligent control module, connected to the voltage comparison module, configured to output a first pulse signal and a second pulse signal, output a bootstrap signal when receiving a first difference signal, stop outputting the second pulse signal when receiving a second control signal, receive a first detection signal, output a first control signal when not receiving the first detection signal but receiving the first difference signal, output a first adjustment signal according to a desired output voltage, and adjust an output voltage threshold set by a voltage tracking module;

[0013] A second output module, connected to the intelligent control module, is used to receive the third electric energy, the second electric energy transmitted by the second conversion module, or the DC electric energy transmitted by the second conversion module, and stops the electric energy receiving work when receiving the bootstrap signal;

[0014] The first output module is used to receive the first electric energy, the direct current electric energy transmitted by the first conversion module or the fourth electric energy.

[0015] As a further solution of the present invention: the power module includes a power interface, a first capacitor, a fourth diode and a sixth power tube; the first conversion module includes a first inductor, a first diode and a first power tube; the first output module includes a fifth capacitor and a first output port; the intelligent control module includes a first controller;

[0016] Preferably, the first end of the power interface is connected to the anode of the fourth diode and one end of the first capacitor and is connected to the drain of the first power tube and the anode of the first diode through the first inductor, the cathode of the first diode is connected to one end of the fifth capacitor and the first end of the first output port, the other end of the first capacitor is connected to the second end of the power interface, the source of the first power tube, the other end of the fifth capacitor, the second end of the first output port and the ground, the gate of the first power tube is connected to the IO1 end of the first controller, the cathode of the fourth diode is connected to the drain of the sixth power tube, the source of the sixth power tube is connected to the second change module, and the gate of the sixth power tube is connected to the IO5 end of the first controller.

[0017] As a further solution of the present invention: the auxiliary power supply module includes an auxiliary power supply interface, a second capacitor and a second diode; the second conversion module includes a second inductor, a third diode and a second power tube;

[0018] Preferably, the first end of the auxiliary power supply interface is connected to the anode of the second diode and is connected to the second end of the auxiliary power supply interface, the source of the second power tube and the ground terminal through the second capacitor, the cathode of the second diode is connected to the source of the sixth power tube and is connected to the anode of the third diode and the drain of the second power tube through the second inductor, the cathode of the third diode is connected to the second output module and the voltage bootstrap control module, and the gate of the second power tube is connected to the IO2 terminal of the first controller.

[0019] As a further solution of the present invention: the voltage bootstrap control module includes a third capacitor, a third power tube, a fourth power tube, a third resistor, a first switch tube, a fourth capacitor and a fifth resistor;

[0020] Preferably, one end of the third capacitor is connected to the cathode of the third energy and the drain of the third power tube, the source of the third power tube is connected to the drain of the fourth power tube and is connected to the cathode of the first diode and one end of the third resistor through the fourth capacitor, the other end of the third resistor is connected to the gate of the fourth power tube and the collector of the first switch tube, the base of the first switch tube is connected to the gate of the third power tube and the IO3 end of the first controller through the fifth resistor, and the source of the fourth power tube is connected to the emitter of the first switch tube, the other end of the third capacitor and the ground.

[0021] As a further solution of the present invention: the second output module includes a fourth resistor, a fifth power tube, a second switch tube and a second output port;

[0022] Preferably, the drain of the fifth power tube is connected to the cathode of the third diode and is connected to the gate of the fifth power tube and the collector of the second switching tube through a fourth resistor, the base of the second switching tube is connected to the base of the first switching tube, the emitter of the second switching tube and the second end of the second output port are both grounded, and the source of the fifth power tube is connected to the first end of the second output port.

[0023] As a further solution of the present invention: the voltage comparison module includes a first resistor, a second resistor, a first comparator, a second comparator and a first logic chip;

[0024] Preferably, one end of the first resistor is connected to the anode of the second diode, the other end of the first resistor is connected to the IO8 end of the first controller, the inverting end of the first comparator and the non-inverting end of the second comparator and the second end of the auxiliary power interface through the second resistor, the non-inverting end of the first comparator is connected to the inverting end of the second comparator and the voltage tracking module, the output end of the first comparator and the output end of the second comparator are respectively connected to the A end and the B end of the first logic chip, and the Y end of the first logic chip is connected to the IO6 end of the first controller.

[0025] As a further solution of the present invention: the voltage tracking module includes a sixth resistor, a seventh resistor, a first power supply, an eighth resistor, a ninth resistor, a seventh power tube and a subtractor;

[0026] Preferably, one end of the sixth resistor is connected to the first end of the first output port, the other end of the sixth resistor is connected to the first input end of the subtractor and connected to the source of the seventh power tube, the ground end and the second end of the first output port through the seventh resistor, the first power supply is connected to the second input end of the subtractor through the eighth resistor and connected to the drain of the seventh power tube through the ninth resistor, the gate of the seventh power tube is connected to the IO7 end of the first controller, and the output end of the subtractor is connected to the IO4 end of the first controller and the inverting end of the second comparator.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the efficient and energy-saving voltage synchronous bootstrap tracking circuit of the present invention can perform a voltage boost processing on the power module by the first conversion module, and can perform a voltage boost processing on the power module or the auxiliary power module by the second change module. When the auxiliary power module provides a DC voltage, the voltage tracking module determines the voltage difference between the required output voltage and the output voltage of the first conversion module, and according to the voltage difference, the voltage bootstrap control module controls the second conversion module and the first conversion module to perform an electric energy superposition processing to meet the voltage boost requirement. When the voltage comparison module detects that the required voltage difference is equal to the voltage provided by the auxiliary power module, the electric energy will be directly transmitted through the second conversion module to avoid switching losses. When the auxiliary power module has no power, the power module will provide a DC voltage to the second change module to complete the bootstrap boost work and improve the voltage bootstrap efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 A schematic block diagram of a principle of a voltage synchronous bootstrap tracking circuit with high efficiency and energy saving provided by an embodiment of the present invention.

[0030] Figure 2 A circuit diagram of a high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit provided by an embodiment of the present invention.

[0031] Figure 3 A circuit diagram of a voltage tracking module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In one embodiment, see Figure 1 , a high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit, comprising: a power supply module 1, a first conversion module 2, a first output module 3, an auxiliary power supply module 4, a second conversion module 5, a voltage tracking module 6, a voltage comparison module 7, a voltage bootstrap control module 8, a second output module 9 and an intelligent control module 10;

[0034] Specifically, the power module 1 is connected to the intelligent control module 10 and the second conversion module 5, and is used to access the DC power, and transmit the DC power to the second conversion module 5 when receiving the first control signal output by the intelligent control module 10;

[0035] The first conversion module 2 is connected to the intelligent control module 10, the power module 1, the voltage bootstrap control module 8 and the first output module 3, and is used to boost the DC power and output the first power when receiving the first pulse signal output by the intelligent control module 10, and directly transmit the DC power to the voltage bootstrap control module 8 and the first output module 3 when not receiving the first pulse signal;

[0036] Auxiliary power supply module 4, used for connecting to DC voltage regulation and providing second electric energy;

[0037] The second conversion module 5 is connected to the auxiliary power module 4, the intelligent control module 10, the voltage bootstrap control module 8 and the second output module 9, and is used to boost the second electric energy or the DC electric energy and output the third electric energy when receiving the second pulse signal output by the intelligent control module 10, and directly transmit the second electric energy or the DC electric energy to the voltage bootstrap control module 8 and the second output module 9 when not receiving the second pulse signal;

[0038] The voltage tracking module 6 is connected to the intelligent control module 10 and the first output module 3, and is used to set the output voltage threshold when receiving the first adjustment signal output by the intelligent control module 10, sample the electric energy input to the first output module 3 and calculate the voltage difference between the output voltage threshold and the sampled signal, and output a first difference signal;

[0039] A voltage comparison module 7, connected to the auxiliary power module 4 and the voltage tracking module 6, for sampling the DC power or the second power and outputting a first sampling signal, and determining whether the voltage of the first difference signal is equal to that of the first sampling signal, whether the voltage of the first difference signal is equal to that of the first sampling signal, and outputting a second control signal when the voltages are equal;

[0040] A voltage bootstrap control module 8 is connected to the intelligent control module 10 and is used to store the DC power output by the first conversion module 2, and store the third power, the second power or the DC power output by the second conversion module 5. When receiving the bootstrap signal output by the intelligent control module 10, the third power, the second power or the DC power output by the second conversion module 5 is superimposed with the DC power output by the first conversion module 2 and outputs the fourth power.

[0041] The intelligent control module 10 is connected to the voltage comparison module 7, and is used to output a first pulse signal and a second pulse signal, output a bootstrap signal when receiving a first difference signal, stop outputting the second pulse signal when receiving a second control signal, receive a first detection signal, and output a first control signal when not receiving the first detection signal but receiving a first difference signal, output a first adjustment signal according to a desired output voltage, and adjust the output voltage threshold set by the voltage tracking module 6;

[0042] The second output module 9 is connected to the intelligent control module 10 and is used to receive the third electric energy, the second electric energy transmitted by the second conversion module 5 or the DC electric energy transmitted by the second conversion module 5, and stops the electric energy receiving work when receiving the bootstrap signal;

[0043] The first output module 3 is used to receive the first electric energy, the direct current electric energy transmitted by the first conversion module 2 or the fourth electric energy.

[0044] In a specific embodiment, the power supply module 1 may adopt a power supply circuit composed of a power supply interface, a capacitor, a field effect transistor, etc., which may be connected to direct current power and control the transmission of direct current power; the first conversion module 2 may adopt a first conversion circuit composed of an inductor, a field effect transistor, a diode, etc., which may perform boosting and power transmission control; the first output module 3 may adopt a first output circuit composed of a capacitor and an output port to receive the power output by the first conversion module 2 or the voltage bootstrap control module 8; the auxiliary power supply module 4 may adopt an auxiliary power supply circuit composed of an auxiliary power supply interface, a capacitor, and a diode, which may be connected to direct current voltage stabilization and perform filtering and unidirectional transmission control; the second conversion module 5 may adopt a second conversion circuit composed of an inductor, a field effect transistor, and a diode to perform boost control and power transmission control; the voltage tracking module 6 may adopt a voltage tracking circuit composed of a resistor, a field effect transistor, and a subtractor, which may set an output voltage threshold, which is the output voltage required by the first output module 3. The voltage comparison module 7 can adopt a voltage comparison circuit composed of a resistor, a comparator and a logic chip, can perform voltage division sampling on the auxiliary power module 4, and judge whether the voltage output by the auxiliary power module 4 is equal to the voltage difference output by the voltage tracking circuit; the voltage bootstrap control module 8 can adopt a voltage bootstrap control circuit composed of a field effect tube, a storage capacitor, a triode, etc., can perform electric energy storage, electric energy transmission control and electric energy superposition control; the second output module 9 can adopt a second output circuit composed of a field effect tube, an output port, a triode, etc., to perform electric energy transmission control and electric energy reception; the intelligent control module 10 can adopt an intelligent control circuit composed of a single-chip microcomputer and a driver, which integrates many components such as an arithmetic unit, a controller, a memory and an input and output device to realize signal processing, data storage, module control, timing control, drive control and other functions.

[0045] In another embodiment, see Figure 1 , Figure 2 and Figure 3 The power module 1 includes a power interface, a first capacitor C1, a fourth diode D4 and a sixth power tube Q6; the first conversion module 2 includes a first inductor L1, a first diode D1 and a first power tube Q1; the first output module 3 includes a fifth capacitor C5 and a first output port; the intelligent control module 10 includes a first controller U1;

[0046] Specifically, the first end of the power interface is connected to the anode of the fourth diode D4 and one end of the first capacitor C1, and is connected to the drain of the first power tube Q1 and the anode of the first diode D1 through the first inductor L1. The cathode of the first diode D1 is connected to one end of the fifth capacitor C5 and the first end of the first output port. The other end of the first capacitor C1 is connected to the second end of the power interface, the source of the first power tube Q1, the other end of the fifth capacitor C5, the second end of the first output port and the ground. The gate of the first power tube Q1 is connected to the IO1 end of the first controller U1. The cathode of the fourth diode D4 is connected to the drain of the sixth power tube Q6, the source of the sixth power tube Q6 is connected to the second change module, and the gate of the sixth power tube Q6 is connected to the IO5 end of the first controller U1.

[0047] In a specific embodiment, the sixth power tube Q6 can be an N-channel field effect tube; the first power tube Q1 can be an N-channel field effect tube, which cooperates with the first inductor L1 and the first diode D1 to perform boost control; the first controller U1 can be composed of an STM32 microcontroller and a field effect tube driver, wherein the field effect tube driver improves the driving capability of the output signal of the STM32 microcontroller, and then completes the driving control of the field effect tube.

[0048] Furthermore, the auxiliary power supply module 4 includes an auxiliary power supply interface, a second capacitor C2 and a second diode D2; the second conversion module 5 includes a second inductor L2, a third diode D3 and a second power tube Q2;

[0049] Specifically, the first end of the auxiliary power interface is connected to the anode of the second diode D2 and is connected to the second end of the auxiliary power interface, the source of the second power tube Q2 and the ground terminal through the second capacitor C2, the cathode of the second diode D2 is connected to the source of the sixth power tube Q6 and is connected to the anode of the third diode D3 and the drain of the second power tube Q2 through the second inductor L2, the cathode of the third diode D3 is connected to the second output module 9 and the voltage bootstrap control module 8, and the gate of the second power tube Q2 is connected to the IO2 terminal of the first controller U1.

[0050] In a specific embodiment, the second power tube Q2 may be an N-channel field effect tube, which cooperates with the third diode D3 and the second inductor L2 to perform boost control.

[0051] Further, the voltage bootstrap control module 8 includes a third capacitor C3, a third power tube Q3, a fourth power tube Q4, a third resistor R3, a first switch tube V1, a fourth capacitor C4 and a fifth resistor R5;

[0052] Specifically, one end of the third capacitor C3 is connected to the cathode of the third energy and the drain of the third power tube Q3, the source of the third power tube Q3 is connected to the drain of the fourth power tube Q4 and is connected to the cathode of the first diode D1 and one end of the third resistor R3 through the fourth capacitor C4, the other end of the third resistor R3 is connected to the gate of the fourth power tube Q4 and the collector of the first switch tube V1, the base of the first switch tube V1 is connected to the gate of the third power tube Q3 and the IO3 end of the first controller U1 through the fifth resistor R5, and the source of the fourth power tube Q4 is connected to the emitter of the first switch tube V1, the other end of the third capacitor C3 and the ground.

[0053] In a specific embodiment, the third power tube Q3 and the fourth power tube Q4 can both be N-channel field effect tubes; the first switch tube V1 can be an NPN transistor; the fourth capacitor C4 cooperates with the first diode D1 and the third capacitor C3 cooperates with the third diode D3 to perform voltage bootstrap operation.

[0054] Further, the second output module 9 includes a fourth resistor R4, a fifth power tube Q5, a second switch tube V2 and a second output port;

[0055] Specifically, the drain of the fifth power tube Q5 is connected to the cathode of the third diode D3 and is connected to the gate of the fifth power tube Q5 and the collector of the second switch tube V2 through the fourth resistor R4, the base of the second switch tube V2 is connected to the base of the first switch tube V1, the emitter of the second switch tube V2 and the second end of the second output port are both grounded, and the source of the fifth power tube Q5 is connected to the first end of the second output port.

[0056] In a specific embodiment, the fifth power tube Q5 may be an N-channel field effect tube; and the second switch tube V2 may be an NPN transistor.

[0057] Further, the voltage comparison module 7 includes a first resistor R1, a second resistor R2, a first comparator A1, a second comparator A2 and a first logic chip J1;

[0058] Specifically, one end of the first resistor R1 is connected to the anode of the second diode D2, the other end of the first resistor R1 is connected to the IO8 end of the first controller U1, the inverting end of the first comparator A1 and the non-inverting end of the second comparator A2 and connected to the second end of the auxiliary power interface through the second resistor R2, the non-inverting end of the first comparator A1 is connected to the inverting end of the second comparator A2 and the voltage tracking module 6, the output end of the first comparator A1 and the output end of the second comparator A2 are respectively connected to the A end and the B end of the first logic chip J1, and the Y end of the first logic chip J1 is connected to the IO6 end of the first controller U1.

[0059] In a specific embodiment, the first comparator A1 and the second comparator A2 can both be LM358 comparators; the first logic chip J1 can be a NOR gate chip.

[0060] Further, the voltage tracking module 6 includes a sixth resistor R6, a seventh resistor R7, a first power source VCC1, an eighth resistor R8, a ninth resistor R9, a seventh power tube Q7 and a subtractor;

[0061] Specifically, one end of the sixth resistor R6 is connected to the first end of the first output port, the other end of the sixth resistor R6 is connected to the first input end of the subtractor and is connected to the source of the seventh power tube Q7, the ground end and the second end of the first output port through the seventh resistor R7, the first power supply VCC1 is connected to the second input end of the subtractor through the eighth resistor R8 and is connected to the drain of the seventh power tube Q7 through the ninth resistor R9, the gate of the seventh power tube Q7 is connected to the IO7 end of the first controller U1, and the output end of the subtractor is connected to the IO4 end of the first controller U1 and the inverting end of the second comparator A2.

[0062] In a specific embodiment, the above-mentioned subtractor can be composed of a resistor and an operational amplifier, and the voltage at the first input terminal of the subtractor is subtracted from the voltage at the second input terminal of the subtractor; the above-mentioned seventh power tube Q7 can be an N-channel field effect tube, which cooperates with the ninth resistor R9, the eighth resistor R8 and the first power supply VCC1 to set the output voltage threshold.

[0063] In a high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit of the present embodiment, a power supply interface is connected to direct current power, a first capacitor C1 is used for filtering, a fourth power tube Q4 and a fifth power tube Q5 are turned on, an IO1 end of a first controller U1 controls the conduction state of the first power tube Q1, and a first inductor L1, a first diode D1, a fourth capacitor C4 and a fifth capacitor C5 are used for boosting processing, and then a required working voltage is provided for the first output port, a direct current voltage is connected to the auxiliary power supply interface, a second capacitor C2 is used for filtering, an IO2 end of the first controller U1 controls the conduction state of the second power tube Q2, and a second inductor L2, a first diode D1, a fourth capacitor C4 and a fifth capacitor C5 are used for boosting processing, and then a required working voltage is provided for the first output port, and a direct current voltage is connected to the auxiliary power supply interface, a second capacitor C2 is used for filtering, and an IO2 end of the first controller U1 controls the conduction state of the second power tube Q2, and a second inductor L2, a first diode D1, a fourth capacitor C4 and a fifth capacitor C5 are used for boosting processing, and then a required working voltage is provided for the first output port, The third diode D3 and the third capacitor C3 perform a voltage boost process, and then transmit it to the second output port through the fifth power tube Q5. The IO7 terminal of the first controller U1 controls the conduction state of the seventh power tube Q7, and then adjusts the first power supply VCC1, the output voltage threshold set by the eighth resistor R8 and the ninth resistor R9. The sixth resistor R6 and the seventh resistor R7 sample the electric energy input to the first output port. When the output voltage threshold is greater than the voltage of the signal sampled by the sixth resistor R6 and the seventh resistor R7, the subtractor outputs a first difference signal and is received by the IO7 terminal of the first controller U1. At this time, the IO3 of the first controller U1 The first output port outputs a bootstrap circuit to control the first switch tube V1, the second switch tube V2 and the third power tube Q3 to be turned on, and the fourth power tube Q4 and the fifth power tube Q5 to be turned off, so that the third capacitor C3 transmits the stored electric energy to the fourth capacitor C4, which is superimposed by the fourth capacitor C4 and then transmitted to the first output port to realize voltage bootstrap control. If the voltage of the first difference signal is equal to the voltage sampled by the first resistor R1 and the second resistor R2 at this time, the signals output by the first comparator A1 and the second comparator A2 become 0, so that the Y end of the first logic chip J1 outputs a high level and is received by the IO6 end of the first controller U1, and the first output port outputs a high level. The IO2 end of a controller U1 stops controlling the conduction of the second power tube Q2, and the electric energy of the auxiliary power interface is directly transmitted to the third capacitor C3 through the second inductor L2 and the third diode D3. If the auxiliary power interface has no power, the IO5 end of the first controller U1 will control the sixth power tube Q6 to be turned on, so that the electric energy connected to the power interface is transmitted to the second conversion module 5. Similarly, the subtractor outputs the first difference signal, and the electric energy output by the second conversion module 5 and the electric energy output by the first conversion module 2 will be superimposed through the first diode D1, the diode, the fourth capacitor C4 and the third capacitor C3, and then transmitted to the first output port.

[0064] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0065] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit, characterized in that: The high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit comprises: a power supply module, a first conversion module, a first output module, an auxiliary power supply module, a second conversion module, a voltage tracking module, a voltage comparison module, a voltage bootstrap control module, a second output module and an intelligent control module; The power supply module is connected to the intelligent control module and the second conversion module, and is used to access the DC power, and transmit the DC power to the second conversion module when receiving the first control signal output by the intelligent control module; The first conversion module is connected to the intelligent control module, the power module, the voltage bootstrap control module and the first output module, and is used to boost the DC power and output the first power when receiving the first pulse signal output by the intelligent control module, and directly transmit the DC power to the voltage bootstrap control module and the first output module when not receiving the first pulse signal; The auxiliary power supply module is used to access the DC voltage regulator and provide the second electric energy; The second conversion module is connected to the auxiliary power module, the intelligent control module, the voltage bootstrap control module and the second output module, and is used to boost the second electric energy or the DC electric energy and output the third electric energy when receiving the second pulse signal output by the intelligent control module, and directly transmit the second electric energy or the DC electric energy to the voltage bootstrap control module and the second output module when not receiving the second pulse signal; The voltage tracking module is connected to the intelligent control module and the first output module, and is used to set the output voltage threshold when receiving the first adjustment signal output by the intelligent control module, sample the electric energy input to the first output module and calculate the voltage difference between the output voltage threshold and the sampled signal, and output a first difference signal; The voltage comparison module is connected to the auxiliary power module and the voltage tracking module, and is used to sample the DC power or the second power and output a first sampling signal, and determine whether the voltage of the first difference signal is equal to that of the first sampling signal, whether the voltage of the first difference signal is equal to that of the first sampling signal, and output a second control signal when the voltages are equal; The voltage bootstrap control module is connected to the intelligent control module and is used to store the DC power output by the first conversion module, store the third power, the second power or the DC power output by the second conversion module, and when receiving the bootstrap signal output by the intelligent control module, superimpose the third power, the second power or the DC power output by the second conversion module and the DC power output by the first conversion module, and output the fourth power; The intelligent control module is connected to the voltage comparison module, and is used to output a first pulse signal and a second pulse signal, output a bootstrap signal when receiving a first difference signal, stop outputting the second pulse signal when receiving a second control signal, receive a first detection signal, and output a first control signal when not receiving the first detection signal but receiving the first difference signal, output a first adjustment signal according to a desired output voltage and adjust the output voltage threshold set by the voltage tracking module; The second output module is connected to the intelligent control module and is used to receive the third electric energy, the second electric energy transmitted by the second conversion module or the DC electric energy transmitted by the second conversion module, and stops the electric energy receiving work when receiving the bootstrap signal; The first output module is used to receive the first electric energy, the direct current electric energy transmitted by the first conversion module or the fourth electric energy.

2. The high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit according to claim 1, characterized in that: The power module includes a power interface, a first capacitor, a fourth diode and a sixth power tube; the first conversion module includes a first inductor, a first diode and a first power tube; the first output module includes a fifth capacitor and a first output port; the intelligent control module includes a first controller; The first end of the power interface is connected to the anode of the fourth diode and one end of the first capacitor and is connected to the drain of the first power tube and the anode of the first diode through the first inductor, the cathode of the first diode is connected to one end of the fifth capacitor and the first end of the first output port, the other end of the first capacitor is connected to the second end of the power interface, the source of the first power tube, the other end of the fifth capacitor, the second end of the first output port and the ground, the gate of the first power tube is connected to the IO1 end of the first controller, the cathode of the fourth diode is connected to the drain of the sixth power tube, the source of the sixth power tube is connected to the second change module, and the gate of the sixth power tube is connected to the IO5 end of the first controller.

3. The high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit according to claim 2, characterized in that: The auxiliary power supply module includes an auxiliary power supply interface, a second capacitor and a second diode; the second conversion module includes a second inductor, a third diode and a second power tube; The first end of the auxiliary power interface is connected to the anode of the second diode and is connected to the second end of the auxiliary power interface, the source of the second power tube and the ground through the second capacitor, the cathode of the second diode is connected to the source of the sixth power tube and is connected to the anode of the third diode and the drain of the second power tube through the second inductor, the cathode of the third diode is connected to the second output module and the voltage bootstrap control module, and the gate of the second power tube is connected to the IO2 end of the first controller.

4. The high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit according to claim 3, characterized in that: The voltage bootstrap control module includes a third capacitor, a third power tube, a fourth power tube, a third resistor, a first switch tube, a fourth capacitor and a fifth resistor; One end of the third capacitor is connected to the cathode of the third energy and the drain of the third power tube, the source of the third power tube is connected to the drain of the fourth power tube and is connected to the cathode of the first diode and one end of the third resistor through the fourth capacitor, the other end of the third resistor is connected to the gate of the fourth power tube and the collector of the first switch tube, the base of the first switch tube is connected to the gate of the third power tube and the IO3 end of the first controller through the fifth resistor, and the source of the fourth power tube is connected to the emitter of the first switch tube, the other end of the third capacitor and the ground.

5. The high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit according to claim 4, characterized in that: The second output module includes a fourth resistor, a fifth power tube, a second switch tube and a second output port; The drain of the fifth power tube is connected to the cathode of the third diode and is connected to the gate of the fifth power tube and the collector of the second switch tube through the fourth resistor, the base of the second switch tube is connected to the base of the first switch tube, the emitter of the second switch tube and the second end of the second output port are both grounded, and the source of the fifth power tube is connected to the first end of the second output port.

6. The high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit according to claim 5, characterized in that: The voltage comparison module includes a first resistor, a second resistor, a first comparator, a second comparator and a first logic chip; One end of the first resistor is connected to the anode of the second diode, the other end of the first resistor is connected to the IO8 end of the first controller, the inverting end of the first comparator and the non-inverting end of the second comparator and is connected to the second end of the auxiliary power interface through the second resistor, the non-inverting end of the first comparator is connected to the inverting end of the second comparator and the voltage tracking module, the output end of the first comparator and the output end of the second comparator are connected to the A end and the B end of the first logic chip respectively, and the Y end of the first logic chip is connected to the IO6 end of the first controller.

7. The high-efficiency and energy-saving voltage synchronous bootstrap tracking circuit according to claim 6, characterized in that: The voltage tracking module includes a sixth resistor, a seventh resistor, a first power supply, an eighth resistor, a ninth resistor, a seventh power tube and a subtractor; One end of the sixth resistor is connected to the first end of the first output port, the other end of the sixth resistor is connected to the first input end of the subtractor and connected to the source of the seventh power tube, the ground end and the second end of the first output port through the seventh resistor, the first power supply is connected to the second input end of the subtractor through the eighth resistor and connected to the drain of the seventh power tube through the ninth resistor, the gate of the seventh power tube is connected to the IO7 end of the first controller, and the output end of the subtractor is connected to the IO4 end of the first controller and the inverting end of the second comparator.

Images