Driving circuit and electronic equipment

Abstract

The utility model discloses a driving circuit and electronic equipment, and belongs to the technical field of power electronics. The driving circuit comprises an anti-interference module, the input end of which is connected with alternating current, and which is used for suppressing interference; the input end of the rectification module is connected with the anti-interference module, and the rectification module is used for rectifying the alternating current to obtain first direct current; the input end of the filtering module is connected with the rectifying module, and the filtering module is used for filtering the first direct current to obtain second direct current; the input end of the boosting module is connected with the filtering module, and the boosting module is used for boosting the second direct current to obtain third direct current; the input end of the peak absorption module is connected with the boosting module, and the peak absorption module is used for absorbing overvoltage and overcurrent generated by the third direct current to obtain fourth direct current; and the flyback module is respectively connected with the peak absorption module and the load and is used for supplying power to the load. The driving circuit is composed of modules small in size and light in weight, and the technical problems that a switching power supply is large in size, heavy in weight and inconvenient to install and use are solved.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and in particular to drive circuits and electronic equipment. Background Art

[0002] Currently, isolated constant current drive designs on the market are generally large and heavy, and the power supply color selection generally adopts dark gray and black industrial style. Large-volume switching power supplies will take up more space, which is an obvious disadvantage for equipment or environments with limited space. Especially in some compact equipment or small installation environments, large-volume switching power supplies may make installation difficult or impossible. Large-volume switching power supplies are not only heavy, but also require more materials and components, which will increase manufacturing costs. Most drivers use open-hole heat dissipation solutions, which are easy to get damp, and mosquitoes and foreign objects fall into the power supply, causing short circuits and fires, which pose serious safety hazards. Utility Model Content

[0003] The main purpose of the present application is to provide a driving circuit and an electronic device, aiming to solve the technical problem that the switching power supply is large in size and occupies too much space.

[0004] To achieve the above object, the present application provides a driving circuit, the driving circuit comprising:

[0005] An anti-interference module, the input end of which is connected to alternating current, and the anti-interference module is used to suppress interference;

[0006] A rectifier module, wherein an input end of the rectifier module is connected to an output end of the anti-interference module, and the rectifier module is used to rectify the alternating current to obtain a first direct current;

[0007] A filter module, wherein an input end of the filter module is connected to an output end of the rectifier module, and the filter module is used to filter the first direct current to obtain a second direct current;

[0008] A boost module, the input end of the boost module is connected to the output end of the filter module, and the boost module is used to boost the second direct current to obtain a third direct current;

[0009] A peak absorption module, the input end of which is connected to the output end of the boost module, and the peak absorption module is used to absorb overvoltage and overcurrent generated by the third direct current to obtain a fourth direct current;

[0010] A flyback module, wherein the input end of the flyback module is connected to the output end of the peak absorption module, the output end of the flyback module is connected to a load, and the flyback module is used to convert the fourth direct current into a fifth direct current to power the load.

[0011] In one embodiment, the anti-interference module includes:

[0012] A surge suppression unit, wherein an input end of the surge suppression unit is connected to the alternating current, and the surge suppression unit is used to suppress lightning surges;

[0013] A noise suppression unit, wherein the input end of the noise suppression unit is connected to the output end of the surge suppression unit, the output end of the noise suppression unit is connected to the input end of the rectifier module, and the noise suppression unit is used to suppress electromagnetic interference noise.

[0014] In one embodiment, the surge suppression unit comprises:

[0015] A fuse, one end of which is connected to the neutral terminal of the alternating current;

[0016] A varistor, one end of which is connected to the live wire end of the alternating current and the live wire input end of the noise suppression unit, and the other end of which is connected to the other end of the fuse and the neutral wire input end of the noise suppression unit.

[0017] In one embodiment, the noise suppression unit includes:

[0018] A first suppression inductor, wherein a first end and a second end of the first suppression inductor are respectively connected to one end and the other end of the varistor;

[0019] A suppression capacitor, wherein two ends of the suppression capacitor are respectively connected to the third end and the fourth end of the first suppression inductor;

[0020] A second suppression inductor, wherein a first end and a second end of the second suppression inductor are respectively connected to two ends of the suppression capacitor, and a third end and a fourth end of the second suppression inductor are respectively connected to a live line input end and a neutral line input end of the rectifier module.

[0021] In one embodiment, the rectifier module includes:

[0022] A full-wave rectifier bridge, wherein the live wire input end of the full-wave rectifier bridge is connected to the third end of the second suppression inductor, the neutral wire input end of the full-wave rectifier bridge is connected to the fourth end of the second suppression inductor, the positive output end of the full-wave rectifier bridge is connected to the positive input end of the filter module, and the negative output end of the full-wave rectifier bridge is connected to the negative input end of the filter module.

[0023] In one embodiment, the filtering module includes:

[0024] A first capacitor, wherein two ends of the first capacitor are respectively connected to the positive output terminal and the negative output terminal of the full-wave rectifier bridge;

[0025] A first inductor, one end of which is connected to the positive output end of the full-wave rectifier bridge;

[0026] a first resistor, wherein one end of the first resistor is connected to one end of the first inductor, and the other end of the first resistor is connected to the other end of the first inductor and an input end of the boost module;

[0027] A second capacitor, one end of the second capacitor is connected to the other end of the first resistor, and the other end of the second capacitor is connected to the negative output end of the full-wave rectifier bridge and ground.

[0028] In one embodiment, the boost module comprises:

[0029] A first chip, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a second inductor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a first diode, a second diode, a third diode, a fourth diode, a Schottky diode and a first switch tube;

[0030] The first end of the first chip is connected to one end of the second resistor; the second end of the first chip is respectively connected to the cathode of the first diode, one end of the third capacitor and one end of the fourth capacitor; the third end of the first chip is respectively connected to one end of the fifth capacitor and one end of the sixth capacitor; the fifth end of the first chip is respectively connected to the sixth end of the first chip, the third resistor and one end of the seventh capacitor; the seventh end of the first chip is connected to one end of the fourth resistor; the eighth end of the first chip is respectively connected to the cathode of the second diode, the fifth resistor and one end of the eighth capacitor; the cathode of the Schottky diode is connected to the anode of the first diode; one end of the sixth resistor is connected to the other end of the fifth capacitor; one end of the seventh resistor, the eighth resistor and the ninth resistor are connected to the other end of the fourth resistor; the anode of the Schottky diode, the other end of the sixth resistor, the other end of the sixth capacitor, the fourth end of the first chip, the other end of the third resistor, the other end of the seventh capacitor, the other end of the seventh resistor, the other end of the eighth resistor, the other end of the ninth resistor and the first end of the first switch tube are grounded; the first end of the first switch tube is also connected to the ground The first switch tube is connected to one end of the tenth resistor; the second end of the first switch tube is respectively connected to the anode of the second diode, the other end of the fifth resistor and the other end of the tenth resistor; the third end of the first switch tube is respectively connected to one end of the ninth capacitor, one end of the tenth capacitor, one end of the eleventh resistor, one end of the second inductor and the anode of the third diode; the other end of the ninth capacitor is connected to the other end of the fourth resistor; the twelfth resistor is respectively connected to the other end of the tenth capacitor and the anode of the first diode; the other end of the eleventh resistor is connected to the other end of the eighth capacitor; one end of the thirteenth resistor is respectively connected to the cathode of the third diode, the cathode of the fourth diode, one end of the eleventh capacitor and one end of the twelfth capacitor; the anode of the fourth diode is respectively connected to the other end of the first inductor, the other end of the eleventh capacitor, the other end of the second inductor and one end of the fifteenth resistor; the fourteenth resistor is respectively connected to the sixth end of the first chip and the other end of the thirteenth resistor; the other end of the fifteenth resistor is connected to the other end of the second resistor; one end of the twelfth capacitor is connected to the input end of the spike absorption module; the other end of the twelfth capacitor is grounded.

[0031] In one embodiment, the peak absorption module comprises:

[0032] a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a thirteenth capacitor and a fifth diode;

[0033] One end of the sixteenth resistor is respectively connected to one end of the twelfth capacitor, one end of the seventeenth resistor, one end of the thirteenth capacitor and the first end of the flyback module; the other end of the sixteenth resistor is respectively connected to the other end of the seventeenth resistor, the other end of the thirteenth capacitor, one end of the eighteenth resistor and one end of the nineteenth resistor; the other end of the eighteenth resistor is respectively connected to the other end of the nineteenth resistor and the cathode of the fifth diode; the anode of the fifth diode is connected to the second end of the flyback module.

[0034] In one embodiment, the flyback module includes:

[0035] The second chip, the twentieth resistor, the twenty-first resistor, the twenty-second resistor, the twenty-third resistor, the twenty-fourth resistor, the twenty-fifth resistor, the twenty-sixth resistor, the twenty-seventh resistor, the twenty-eighth resistor, the twenty-ninth resistor, the thirtieth resistor, the fourteenth capacitor, the fifteenth capacitor, the sixteenth capacitor, the seventeenth capacitor, the sixth diode, the seventh diode, the eighth diode, the second switch tube, the transformer and the third suppression inductor;

[0036] The first end of the second chip is respectively connected to one end of the 20th resistor, one end of the 21st resistor, one end of the 22nd resistor, one end of the 23rd resistor, the first end of the second switch tube and one end of the 14th capacitor; the other ends of the 20th resistor, the 21st resistor and the 22nd resistor are grounded; the second end of the second chip is connected to one end of the 24th resistor; the third end of the second chip is respectively connected to the third end of the second switch tube, the other end of the 14th capacitor and the first end of the transformer; the cathode of the sixth diode is respectively connected to the other end of the 24th resistor and one end of the 25th resistor; the anode of the sixth diode is respectively connected to the other end of the 23rd resistor, the other end of the 25th resistor and the second end of the second switch tube; the fourth end of the second chip is connected to one end of the 26th resistor, the other end of the 26th resistor is connected to the second end of the transformer and one end of the 13th capacitor; the fifth end of the second chip is connected to one end of the twenty-seventh resistor; the sixth end of the second chip is respectively connected to one end of the fifteenth capacitor, one end of the sixteenth capacitor and one end of the twenty-eighth resistor; the other end of the twenty-seventh resistor, the other end of the fifteenth capacitor, the other end of the sixteenth capacitor and the seventh end of the second chip are grounded; the cathode of the seventh diode is connected to the other end of the twenty-eighth resistor, and the anode of the seventh diode is connected to the third end of the transformer; the fourth end of the transformer is grounded; the fifth end of the transformer is connected to the anode of the eighth diode; the sixth end of the transformer is grounded; the cathode of the eighth diode is respectively connected to the twenty-ninth resistor, the thirtieth resistor, one end of the seventeenth capacitor and the first end of the third suppression inductor; the twenty-ninth resistor, the thirtieth resistor, the other end of the seventeenth capacitor and the second end of the third suppression inductor are grounded; the third end of the third suppression inductor is connected to the positive input end of the load; the fourth end of the third suppression inductor is connected to the negative output end of the load.

[0037] In addition, to achieve the above-mentioned purpose, the present application also provides an electronic device, which includes the driving circuit as described above.

[0038] The present application proposes a driving circuit and an electronic device, the driving circuit comprising: an anti-interference module, the input end of the anti-interference module is connected to an alternating current, and the anti-interference module is used to suppress interference; a rectifier module, the input end of the rectifier module is connected to the output end of the anti-interference module, the rectifier module is used to rectify the alternating current to obtain a first direct current; a filter module, the input end of the filter module is connected to the output end of the rectifier module, the filter module is used to filter the first direct current to obtain a second direct current; a boost module, the input end of the boost module is connected to the output end of the filter module, the boost module is used to boost the second direct current to obtain a third direct current; a peak absorption module, the input end of the peak absorption module is connected to the output end of the boost module, the peak absorption module is used to absorb overvoltage and overcurrent generated by the third direct current to obtain a fourth direct current; a flyback module, the input end of the flyback module is connected to the output end of the peak absorption module, the output end of the flyback module is connected to a load, and the flyback module is used to convert the fourth direct current into a fifth direct current to power the load. The driving circuit of the present application is composed of an anti-interference module, a rectifier module, a filter module, a boost module, a peak absorption module and a flyback module, which can convert 220-volt AC power into the DC power required by the load. Compared with the traditional switching power supply, the driving circuit of the present application adopts an integrated and compact design and uses small and light modules, overcoming the technical problems of the switching power supply in the prior art, which is large in size, heavy in weight, occupies a lot of space, and is inconvenient to install and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0040] Figure 1 A schematic diagram of a driving circuit provided in an embodiment of the present application;

[0041] Figure 2 A schematic diagram of the structure of an anti-interference module provided in an embodiment of the present application;

[0042] Figure 3 A schematic diagram of the structure of a surge suppression unit provided in an embodiment of the present application;

[0043] Figure 4 A schematic diagram of the structure of a noise suppression unit provided in an embodiment of the present application;

[0044] Figure 5A schematic diagram of the structure of a rectifier module provided in an embodiment of the present application;

[0045] Figure 6 A structural schematic diagram of a filtering module provided in an embodiment of the present application;

[0046] Figure 7 A schematic diagram of the structure of a boost module provided in an embodiment of the present application;

[0047] Figure 8 A schematic diagram of the structure of a tip absorption module provided in an embodiment of the present application;

[0048] Fig. 9 A schematic diagram of the structure of a flyback module provided in an embodiment of the present application;

[0049] Fig.10 A detailed structural diagram of a driving circuit provided in an embodiment of the present application;

[0050] Fig.11 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0051] Description of Figure Numbers:

[0052]

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0055] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the meaning of "and / or" appearing in the full text is to include three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B.

[0057] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] It should also be understood that the references to "one embodiment" or "some embodiments" described in the specification of the embodiments of the present application mean that one or more embodiments of the embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Thus, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0059] Currently, isolated constant current drive designs on the market are generally large and heavy, and the power supply color selection generally adopts dark gray and black industrial style. Large-volume switching power supplies will take up more space, which is an obvious disadvantage for equipment or environments with limited space. Especially in some compact equipment or small installation environments, large-volume switching power supplies may make installation difficult or impossible. Large-volume switching power supplies are not only heavy, but also require more materials and components, which will increase manufacturing costs. Most drivers use open-hole heat dissipation solutions, which are easy to get damp, and mosquitoes and foreign objects fall into the power supply, causing short circuits and fires, which pose serious safety hazards.

[0060] Based on this, the present application proposes a driving circuit and an electronic device, the driving circuit comprising: an anti-interference module, the input end of the anti-interference module is connected to the alternating current, and the anti-interference module is used to suppress interference; a rectifier module, the input end of the rectifier module is connected to the output end of the anti-interference module, the rectifier module is used to rectify the alternating current to obtain a first direct current; a filter module, the input end of the filter module is connected to the output end of the rectifier module, the filter module is used to filter the first direct current to obtain a second direct current; a boost module, the input end of the boost module is connected to the output end of the filter module, the boost module is used to boost the second direct current to obtain a third direct current; a peak absorption module, the input end of the peak absorption module is connected to the output end of the boost module, the peak absorption module is used to absorb overvoltage and overcurrent generated by the third direct current to obtain a fourth direct current; a flyback module, the input end of the flyback module is connected to the output end of the peak absorption module, the output end of the flyback module is connected to a load, and the flyback module is used to convert the fourth direct current into a fifth direct current to power the load. The driving circuit of the present application is composed of an anti-interference module, a rectifier module, a filter module, a boost module, a peak absorption module and a flyback module, which can convert 220-volt AC power into the DC power required by the load. Compared with the traditional switching power supply, the driving circuit of the present application adopts an integrated and compact design and uses small and light modules, overcoming the technical problems of the switching power supply in the prior art, which is large in size, heavy in weight, occupies a lot of space, and is inconvenient to install and use.

[0061] The present application embodiment provides a driving circuit, referring to Figure 1 , Figure 1 A schematic diagram of a driving circuit provided in an embodiment of the present application is provided, wherein the driving circuit comprises:

[0062] An anti-interference module 10, the input end of the anti-interference module 10 is connected to an alternating current, and the anti-interference module 10 is used to suppress interference;

[0063] A rectifier module 20, wherein the input end of the rectifier module 20 is connected to the output end of the anti-interference module 10, and the rectifier module 20 is used to rectify the alternating current to obtain a first direct current;

[0064] A filter module 30, wherein the input end of the filter module 30 is connected to the output end of the rectifier module 20, and the filter module 30 is used to filter the first direct current to obtain a second direct current;

[0065] A boost module 40, wherein the input end of the boost module 40 is connected to the output end of the filter module 30, and the boost module 40 is used to boost the second direct current to obtain a third direct current;

[0066] A peak absorption module 50, wherein the input end of the peak absorption module 50 is connected to the output end of the boost module 40, and the peak absorption module 50 is used to absorb overvoltage and overcurrent generated by the third direct current to obtain a fourth direct current;

[0067] The flyback module 60 has an input end connected to the output end of the peak absorption module 50, and an output end of the flyback module 60 is connected to the load. The flyback module 60 is used to convert the fourth direct current into a fifth direct current to power the load.

[0068] In this embodiment, the driving circuit can convert 220V AC into DC required by the load, and the load can be a light bulb. It has a wide range of application scenarios in actual production. Compared with the traditional switching power supply, the driving circuit of this embodiment has the advantages of small size and light weight. Considering the small size, in order to make the driving circuit have a good heat dissipation effect, materials with good heat dissipation performance are selected during design, and a layout with heat dissipation effect is adopted, so that the driving circuit has better heat dissipation than the traditional switching power supply, thereby improving the reliability of the driving circuit.

[0069] The driving circuit of this embodiment includes an anti-interference module 10, a rectifier module 20, a filter module 30, a boost module 40, a peak absorption module 50 and a flyback module 60. The anti-interference module 10 first performs noise reduction, anti-interference and other operations on the input AC power to improve the quality of the AC power input to the rectifier module 20 so that the rectifier module 20 can perform better rectification. After the rectifier module 20 rectifies the AC power, it outputs DC power, and filters the DC power through the filter module 30. The boost module 40 boosts the filtered DC power to obtain the boosted DC power, that is, the third DC power. The boosted DC power needs to be input to the flyback module 60, but the flyback module 60 includes a coil element, which is prone to instantaneous overvoltage and overcurrent. Therefore, before the DC power is input to the flyback module 60, the peak absorption module 50 needs to be used to absorb the overvoltage and overcurrent. The flyback module 60 is used to convert the DC power into the DC power required by the load and supply power to the load.

[0070] This embodiment forms a driving circuit through an anti-interference module 10, a rectifier module 20, a filter module 30, a boost module 40, a peak absorption module 50 and a flyback module 60, and obtains a direct current that meets the load requirements through a series of processing of the alternating current, and supplies power to the load, completely replacing the power supply function of the switching power supply. Compared with the traditional switching power supply, each module constituting the driving circuit is small in size and light in weight, and pays attention to the heat dissipation layout during design, selects components with strong heat dissipation, and improves the heat dissipation capacity, thereby overcoming the technical problems of the switching power supply in the prior art, such as large size, heavy weight, large space occupation, and inconvenient installation and use.

[0071] Reference Figure 2In some feasible embodiments, the anti-interference module 10 includes:

[0072] A surge suppression unit 11, an input end of the surge suppression unit 11 is connected to an alternating current, and the surge suppression unit 11 is used to suppress a lightning surge;

[0073] The noise suppression unit 12 has an input end connected to the output end of the surge suppression unit 11 , and an output end of the noise suppression unit 12 connected to the input end of the rectifier module 20 . The noise suppression unit 12 is used to suppress electromagnetic interference noise.

[0074] In this embodiment, the anti-interference module 10 includes a surge suppression unit 11 and a noise suppression unit 12. Compared with the switching power supply, the driving circuit of this embodiment has the function of preventing lightning surges. The surge suppression unit 11 is arranged at the input end of the driving circuit, connected to the alternating current, suppresses the surge, and protects the modules or components at the rear end. The noise suppression unit 12 suppresses the noise of the alternating current input to the rectifier module 20, so as to facilitate the rectification of the rectifier module 20. The noise suppression unit 12 mainly suppresses electromagnetic interference noise.

[0075] Reference Figure 3 In some feasible embodiments, the surge suppression unit 11 includes:

[0076] Fuse F1, one end of the fuse F1 is connected to the neutral terminal of the AC power;

[0077] A varistor RV, one end of the varistor RV is connected to the live wire end of the AC power and the live wire input end of the noise suppression unit 12 , and the other end of the varistor RV is connected to the other end of the fuse F1 and the neutral wire input end of the noise suppression unit 12 .

[0078] In this embodiment, the surge suppression unit 11 includes a fuse F1 and a varistor RV. In some circuits with protection functions, a varistor RV is usually set at the input end of the circuit or close to the circuit load. The varistor RV will change resistance when the voltage exceeds its rated value, thereby absorbing the energy of the overvoltage. A fuse F1 is set at the input end of the circuit. The fuse F1 will blow when the current exceeds its rated value, cutting off the circuit to protect the modules or components at the back end. When a surge voltage appears in the circuit, the varistor RV will absorb part of the energy and reduce the impact of the surge. At the same time, the fuse F1 will blow when the current reaches or exceeds its rated value, cutting off the connection with the alternating current. Selecting a suitable varistor RV and a suitable fuse F1 can effectively suppress surge voltage.

[0079] Reference Figure 4 In some feasible embodiments, the noise suppression unit 12 includes:

[0080] A first suppression inductor LF1, wherein a first end and a second end of the first suppression inductor LF1 are respectively connected to one end and the other end of the varistor RV;

[0081] A suppression capacitor CX, where two ends of the suppression capacitor CX are respectively connected to the third end and the fourth end of the first suppression inductor LF1;

[0082] The second suppression inductor LF2 has a first end and a second end connected to the two ends of the suppression capacitor CX respectively, and a third end and a fourth end connected to the live input end and the neutral input end of the rectifier module 20 respectively.

[0083] In this embodiment, the noise suppression unit 12 includes a first suppression inductor LF1, a second suppression inductor LF2 and a suppression capacitor CX. The first suppression inductor LF1 and the second suppression inductor LF2 can be common mode inductors. A capacitor connected between the two common mode inductors can form an LC (inductor / capacitor) filter for suppressing EMI (Electromagnetic Interference) noise. This configuration can be called a common mode filter. Common mode inductors are used to suppress EMI noise, mainly common mode noise. The capacitor plays a filtering role in this configuration to help eliminate high-frequency noise. When common mode noise passes through the system, it generates a voltage in the common mode inductor. The voltage will be filtered out or weakened through the capacitor in the middle, thereby reducing its impact.

[0084] Reference Figure 5 In some feasible embodiments, the rectifier module 20 includes:

[0085] Full-wave rectifier bridge BD, the live wire input end of the full-wave rectifier bridge BD is connected to the third end of the second suppression inductor LF2, the neutral wire input end of the full-wave rectifier bridge BD is connected to the fourth end of the second suppression inductor LF2, the positive output end of the full-wave rectifier bridge BD is connected to the positive input end of the filter module 30, and the negative output end of the full-wave rectifier bridge BD is connected to the negative input end of the filter module 30.

[0086] In this embodiment, the rectifier module 20 can be a full-wave rectifier bridge BD or other rectifier structures, as long as the purpose of rectification can be achieved. It is worth noting that the full-wave rectifier bridge BD can not only achieve the function of rectification, but also has a simple structure and is composed of four diodes. Compared with other rectifier structures, the full-wave rectifier bridge BD is smaller in size and has a lower cost. The power consumption generated during operation is also relatively small, which is conducive to heat dissipation. Overall, the full-wave rectifier bridge BD has certain advantages in terms of occupied space, cost and heat dissipation, and has made certain contributions to overcoming the problems of large size, heavy weight and poor heat dissipation of traditional switching power supplies.

[0087] Reference Figure 6In some feasible embodiments, the filtering module 30 includes:

[0088] A first capacitor C1, two ends of the first capacitor C1 are respectively connected to the positive output terminal and the negative output terminal of the full-wave rectifier bridge BD;

[0089] A first inductor L1, one end of the first inductor L1 is connected to the positive output end of the full-wave rectifier bridge BD;

[0090] a first resistor R1, one end of the first resistor R1 is connected to one end of the first inductor L1, and the other end of the first resistor R1 is connected to the other end of the first inductor L1 and the input end of the boost module 40;

[0091] A second capacitor C2, one end of the second capacitor C2 is connected to the other end of the first resistor R1, and the other end of the second capacitor C2 is connected to the negative output end of the full-wave rectifier bridge BD and the ground.

[0092] In this embodiment, the filter module 30 includes a first capacitor C1, a second capacitor C2, a first inductor L1 and a first resistor R1, and the first capacitor C1, the second capacitor C2, the first inductor L1 and the first resistor R1 form a π-type filter circuit. The rectifier module 20 converts the AC power supply into a DC power supply. However, the output DC power supply may still contain some AC components, which may cause ripples in the output DC power supply. Therefore, a π-type filter circuit is used to filter the DC power supply. In the π-type filter circuit, the first capacitor C1 and the second capacitor C2 are used to filter the ripples in the DC signal. The first capacitor C1 is located at the input end, and the second capacitor C2 is located at the output end. The impedance of the first inductor L1 for the DC signal is very small, so the DC signal is hardly hindered, while the AC signal is hindered by the inductor and is filtered out. The first resistor R1 plays a role in regulation. The first resistor R1 can help match the impedance between the capacitor and the inductor to ensure that the entire filter circuit can work effectively at the design frequency. By adjusting the size of the first resistor R1, the damping of the filter circuit can be adjusted to affect the frequency response characteristics of the filter circuit. The first capacitor C1, the second capacitor C2, the first inductor L1 and the first resistor R1 work together to achieve filtering and regulation of the DC power supply.

[0093] Reference Figure 7 In some feasible embodiments, the boost module 40 includes:

[0094] A first chip 41, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a second inductor L2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a Schottky diode ZD and a first switch tube Q1;

[0095] The first end of the first chip 41 is connected to one end of the second resistor R2; the second end of the first chip 41 is respectively connected to the cathode of the first diode D1, one end of the third capacitor C3 and one end of the fourth capacitor C4; the third end of the first chip 41 is respectively connected to one end of the fifth capacitor C5 and one end of the sixth capacitor C6; the fifth end of the first chip 41 is respectively connected to the sixth end of the first chip 41, one end of the third resistor R3 and one end of the seventh capacitor C7; the seventh end of the first chip 41 is connected to one end of the fourth resistor R4; the eighth end of the first chip 41 is respectively connected to the cathode of the second diode D2, the fifth resistor R5 and one end of the eighth capacitor C8; the cathode of the Schottky diode ZD The anode of the first diode D1 is connected to the anode of the first diode D1; one end of the sixth resistor R6 is connected to the other end of the fifth capacitor C5; one end of the seventh resistor R7, the eighth resistor R8 and the ninth resistor R9 are connected to the other end of the fourth resistor R4; the anode of the Schottky diode ZD, the other end of the sixth resistor R6, the other end of the sixth capacitor C6, the fourth end of the first chip 41, the other end of the third resistor R3, the other end of the seventh capacitor C7, the other end of the seventh resistor R7, the other end of the eighth resistor R8, the other end of the ninth resistor R9 and the first end of the first switch tube Q1 are grounded; the first end of the first switch tube Q1 is also connected to one end of the tenth resistor R10; the The second end of the first switch tube Q1 is respectively connected to the anode of the second diode D2, the other end of the fifth resistor R5 and the other end of the tenth resistor R10; the third end of the first switch tube Q1 is respectively connected to one end of the ninth capacitor C9, one end of the tenth capacitor C10, one end of the eleventh resistor R11, one end of the second inductor L2 and the anode of the third diode D3; the other end of the ninth capacitor C9 is connected to the other end of the fourth resistor R4; the twelfth resistor R12 is respectively connected to the other end of the tenth capacitor C10 and the anode of the first diode D1; the other end of the eleventh resistor R11 is connected to the other end of the eighth capacitor C8; one end of the thirteenth resistor R13 is respectively connected to the other end of the eighth capacitor C8; The cathode of the third diode D3, the cathode of the fourth diode D4, one end of the eleventh capacitor C11 and one end of the twelfth capacitor C12 are respectively connected; the anode of the fourth diode D4 is respectively connected to the other end of the first inductor L1, the other end of the eleventh capacitor C11, the other end of the second inductor L2 and one end of the fifteenth resistor R15; the fourteenth resistor R14 is respectively connected to the sixth end of the first chip 41 and the other end of the thirteenth resistor R13; the other end of the fifteenth resistor R15 is connected to the other end of the second resistor R2; one end of the twelfth capacitor C12 is connected to the input end of the spike absorption module 50; the other end of the twelfth capacitor C12 is grounded.

[0096] In this embodiment, the direct current output from the filter module 30 is supplied to the first end of the first chip 41 through the fifteenth resistor R15 and the second resistor R2, and the first chip 41 is powered. The second resistor R2 and the fifteenth resistor R15 can provide the first chip 41 with certain anti-interference and anti-surge capabilities. The first end of the first chip 41 is the power supply end of the chip. After the power supply end receives the power supply, the first chip 41 can start and run normally. The eighth end of the first chip 41 is connected to the second end of the first switch tube Q1 through the fifth resistor R5, wherein the first switch tube Q1 can be a field effect tube, which is turned on at a high level, and the first end of the first switch tube Q1 corresponds to the source of the field effect tube, the second end of the first switch tube Q1 corresponds to the gate of the field effect tube, and the third end of the first switch tube Q1 corresponds to the drain of the field effect tube. The eighth end of the first chip 41 is a control signal output end. When the first chip 41 is started, the eighth end outputs a control signal, and the control signal can be a periodic signal with alternating high and low levels. After receiving the periodic signal, the field effect tube alternately conducts between the source and the drain. When the field effect tube is turned on, the second inductor L2 forms a loop to the ground, and the second inductor L2 converts electrical energy into magnetic energy. When the field effect tube is turned off, the second inductor L2 releases magnetic energy, generates a self-inductance voltage and a voltage superposition of the DC power output by the filter module 30, and outputs it to the twelfth capacitor C12 through the third diode D3 to supply power to the twelfth capacitor C12. When the voltage of the AC power connected to the anti-interference module 10 is 220 volts, the voltage of the DC power output to the twelfth capacitor C12 is approximately 400V, thereby achieving the purpose of boosting. Other components in the boost module 40 are used to assist the operation of the first chip 41 or the first switch tube Q1. For example, the second end of the first chip 41 is a power supply enable end, and a stable power supply circuit can be formed at the second end of the first chip 41 through the tenth capacitor C10, the twelfth resistor R12, the first diode D1, the Schottky diode ZD, the third capacitor C3 and the fourth capacitor C4; the third end of the first chip 41 is a compensation end, and a compensation path is formed by the fifth capacitor C5, the sixth resistor R6 and the sixth capacitor C6; the fourth end of the first chip is a ground end; the fifth end of the first chip is an output voltage adjustment end, and the output voltage is adjusted through the third resistor R3, the seventh capacitor C7, the thirteenth resistor R13 and the fourteenth resistor R14; the sixth end of the first chip 41 is connected to the fifth end and has an overvoltage protection function; one end of the ninth capacitor C9 is connected to the third end of the first switch tube Q1, and the other end is connected to the seventh resistor R7, the eighth resistor R8 and the ninth resistor R9 to ground, and the seventh end of the first chip 41 is connected to C9 through the fourth resistor R4 to realize current feedback control. The specific needs include which components constitute other auxiliary circuits. In actual production, they are set according to the selected model of the first chip 41 to meet the needs of each connection terminal of the first chip 41.

[0097] Reference Figure 8In some feasible embodiments, the peak absorption module 50 includes:

[0098] a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a thirteenth capacitor C13 and a fifth diode D5;

[0099] One end of the sixteenth resistor R16 is respectively connected to one end of the twelfth capacitor C12, one end of the seventeenth resistor R17, one end of the thirteenth capacitor C13 and the first end of the flyback module 60; the other end of the sixteenth resistor R16 is respectively connected to the other end of the seventeenth resistor R17, the other end of the thirteenth capacitor C13, one end of the eighteenth resistor R18 and one end of the nineteenth resistor R19; the other end of the eighteenth resistor R18 is respectively connected to the other end of the nineteenth resistor R19 and the cathode of the fifth diode D5; the anode of the fifth diode D5 is connected to the second end of the flyback module 60.

[0100] In the present embodiment, a bridge is formed by a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, and a nineteenth resistor R19. The bridge can limit the influence of overvoltage on the circuit. When the voltage exceeds a certain threshold, the bridge can adjust the resistance value in the circuit, thereby reducing the influence of overvoltage on other components. By using a bridge, it can help balance the voltage and current in the circuit, thereby improving the stability and reliability of the entire system. The thirteenth capacitor C1 can be used to absorb overcurrent, and the fifth diode D5 also has a certain limiting effect on the current, limiting the flow direction of the current. The sixteenth resistor R16, the seventeenth resistor R17, the eighteenth resistor R18, the nineteenth resistor R19, the thirteenth capacitor C13 and the fifth diode D5 absorb overvoltage and overcurrent to avoid overvoltage and overcurrent affecting the flyback module 60.

[0101] Reference Fig. 9 In some feasible embodiments, the flyback module 60 includes:

[0102] The second chip 61, the twentieth resistor R20, the twenty-first resistor R21, the twenty-second resistor R22, the twenty-third resistor R23, the twenty-fourth resistor R24, the twenty-fifth resistor R25, the twenty-sixth resistor R26, the twenty-seventh resistor R27, the twenty-eighth resistor R28, the twenty-ninth resistor R29, the thirtieth resistor R30, the fourteenth capacitor C14, the fifteenth capacitor C15, the sixteenth capacitor C16, the seventeenth capacitor C17, the sixth diode D6, the seventh diode D7, the eighth diode D8, the second switch tube Q2, the transformer T1 and the third suppression inductor LF3;

[0103] The first end of the second chip 61 is respectively connected to one end of the twentieth resistor R20, one end of the twenty-first resistor R21, one end of the twenty-second resistor R22, one end of the twenty-third resistor R23, the first end of the second switch tube Q2 and one end of the fourteenth capacitor C14; the other ends of the twentieth resistor R20, the twenty-first resistor R21 and the twenty-second resistor R22 are grounded; the second end of the second chip 61 is connected to one end of the twenty-fourth resistor R24; the third end of the second chip 61 is respectively connected to the third end of the second switch tube Q2, the other end of the fourteenth capacitor C14 and the first end of the transformer T1; the cathode of the sixth diode D6 is respectively connected to the other end of the twenty-fourth resistor R24 ​​and one end of the twenty-fifth resistor R25; the anode of the sixth diode D6 is respectively connected to the other end of the twenty-third resistor R23, the other end of the twenty-fifth resistor R25 and the second end of the second switch tube Q2; the fourth end of the second chip 61 is connected to one end of the twenty-sixth resistor R26, and the other end of the twenty-sixth resistor R26 is connected to the second end of the transformer T1 and one end of the thirteenth capacitor C13; the fifth end of the second chip 61 is connected to The sixth end of the second chip 61 is connected to one end of the 27th resistor R27; the sixth end of the second chip 61 is respectively connected to one end of the 15th capacitor C15, one end of the 16th capacitor C16 and one end of the 28th resistor R28; the other end of the 27th resistor R27, the other end of the 15th capacitor C15, the other end of the 16th capacitor C16 and the seventh end of the second chip 61 are grounded; the cathode of the seventh diode D7 is connected to the other end of the 28th resistor R28, and the anode of the seventh diode D7 is connected to the third end of the transformer T1; the fourth end of the transformer T1 is grounded; the transformer T1 The fifth end is connected to the positive electrode of the eighth diode D8; the sixth end of the transformer T1 is grounded; the cathode of the eighth diode D8 is respectively connected to the twenty-ninth resistor R29, the thirtieth resistor R30, one end of the seventeenth capacitor C17 and the first end of the third suppression inductor LF3; the other end of the twenty-ninth resistor R29, the thirtieth resistor R30, the seventeenth capacitor C17 and the second end of the third suppression inductor LF3 are grounded; the third end of the third suppression inductor LF3 is connected to the positive input end of the load; the fourth end of the third suppression inductor LF3 is connected to the negative output end of the load.

[0104] In this embodiment, the twelfth capacitor C12 can be an electrolytic capacitor, and the energy stored in it is output to the fourth end of the second chip 61 through the twenty-sixth resistor R26, providing the second chip 61 with a startup power supply. When the second chip 61 is started, the second end of the second chip 61 outputs a control signal, which is output to the second end of the second switch tube Q2 through the twenty-fourth resistor R24 ​​and the twenty-fifth resistor R25. Similarly, the second switch tube Q2 can be a field effect tube, which is turned on at a high level. The first end of the second switch tube Q2 corresponds to the source of the field effect tube, the second end of the second switch tube Q2 corresponds to the gate of the field effect tube, and the third end of the second switch tube Q2 corresponds to the drain of the field effect tube. The twenty-third resistor R23 serves as the input resistor of the field effect tube. The control signal output from the second end of the second chip 61 is a periodic signal with alternating high and low levels, and the second switch tube Q2 is alternately turned on and off under the control of the periodic signal. When the second switch tube Q2 is turned on, the primary coil of the transformer T1 forms a loop to the ground to convert electrical energy into magnetic energy. When the second switch tube Q2 is turned off, the primary coil releases magnetic energy and couples to the secondary coil to form an induced voltage. The induced voltage is rectified under the action of the unidirectional conduction of the eighth diode D8, and the seventeenth capacitor C17 is charged. The seventeenth capacitor C17 supplies power to the load by discharging. The seventeenth capacitor C17 can also be an electrolytic capacitor. The twenty-ninth capacitor R29 and the thirtieth capacitor R30 are used to protect the seventeenth capacitor C17 when it is discharged. The third suppression inductor LF3 is used to filter out noise and interference signals in the circuit, improve the quality of the electric energy input to the load, and help to extend the service life of the load. The third end of the second chip 61 is connected to the third end of the second switch tube Q2 as a voltage sampling. The fifth end of the second chip 61 is connected to the twenty-seventh resistor to form a no-load voltage regulation circuit. The first end of the second chip 61 forms a ground current sampling circuit through the twentieth resistor, the twenty-first resistor and the twenty-second resistor. The transformer T1 flows back to the ground through the seventh diode D7, the twenty-eighth resistor R28, the fifteenth capacitor C15 and the sixteenth capacitor C16, and the generated voltage provides a stable voltage for the sixth end of the second chip 61.

[0105] Combining the above embodiments, it can be concluded that Fig.10 The detailed structural diagram of the driving circuit shown in the figure realizes various functions of the driving circuit through the interconnection of various parts of the structure.

[0106] The present embodiment provides a driving circuit, which is composed of an anti-interference module, a rectifier module, a filter module, a boost module, a peak absorption module and a flyback module, and can convert alternating current into direct current required by the load. The driving circuit of the present embodiment has a strong anti-interference ability and can output high-quality power supply. In actual production, it is beneficial to improve the service life of the load. The modules of the present embodiment are mainly composed of common resistors, capacitors, inductors, switch tubes and chips. Compared with the traditional switching power supply, the production cost is greatly reduced, and the resistors, capacitors, inductors, switch tubes and chips are light in weight and small in size, which greatly reduces the space occupied by the driving circuit and is easy to install and use. At the same time, compared with the problem of heat dissipation difficulties in traditional switching power supplies, the driving circuit of the present embodiment adopts a reasonable heat dissipation layout in design, and uses materials with good heat dissipation, so that the driving circuit has good heat dissipation performance while ensuring that the driving circuit has the advantage of small size. Therefore, the driving circuit of the present embodiment integrates the advantages of small size, light weight, low cost and good heat dissipation, and solves the technical problems of large size, heavy weight, large space occupation, and inconvenient installation and use of traditional switching power supplies.

[0107] In addition, the present application embodiment also provides an electronic device 01, referring to Fig.11 The electronic device 01 includes the driving circuit 02 provided in the above embodiment.

[0108] In this embodiment, the electronic device 01 may be a switching power supply or other power supply equipment, which includes the entire driving circuit 02 therein.

[0109] Since the electronic device proposed in this embodiment includes the driving circuit proposed in the above embodiments, it has the beneficial effects of the above embodiments. For details of the specific working process and principle of the driving circuit, please refer to the driving circuit provided in the above embodiments, which will not be described one by one here, and they are all within the protection scope of this embodiment.

[0110] It should be noted that the technical solutions of the various embodiments of the present application can be combined with each other, but it must be based on the fact that they can be implemented by technical personnel in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0111] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A driving circuit, characterized in that: The driving circuit comprises: An anti-interference module, the input end of which is connected to alternating current, and the anti-interference module is used to suppress interference; A rectifier module, wherein an input end of the rectifier module is connected to an output end of the anti-interference module, and the rectifier module is used to rectify the alternating current to obtain a first direct current; A filter module, wherein an input end of the filter module is connected to an output end of the rectifier module, and the filter module is used to filter the first direct current to obtain a second direct current; A boost module, the input end of the boost module is connected to the output end of the filter module, and the boost module is used to boost the second direct current to obtain a third direct current; A peak absorption module, the input end of which is connected to the output end of the boost module, and the peak absorption module is used to absorb overvoltage and overcurrent generated by the third direct current to obtain a fourth direct current; A flyback module, wherein the input end of the flyback module is connected to the output end of the peak absorption module, the output end of the flyback module is connected to a load, and the flyback module is used to convert the fourth direct current into a fifth direct current to power the load.

2. The driving circuit according to claim 1, characterized in that: The anti-interference module comprises: A surge suppression unit, wherein an input end of the surge suppression unit is connected to the alternating current, and the surge suppression unit is used to suppress lightning surges; A noise suppression unit, wherein the input end of the noise suppression unit is connected to the output end of the surge suppression unit, the output end of the noise suppression unit is connected to the input end of the rectifier module, and the noise suppression unit is used to suppress electromagnetic interference noise.

3. The driving circuit according to claim 2, characterized in that: The surge suppression unit comprises: A fuse, one end of which is connected to the neutral terminal of the alternating current; A varistor, one end of which is connected to the live wire end of the alternating current and the live wire input end of the noise suppression unit, and the other end of which is connected to the other end of the fuse and the neutral wire input end of the noise suppression unit.

4. The driving circuit according to claim 3, characterized in that: The noise suppression unit comprises: A first suppression inductor, wherein a first end and a second end of the first suppression inductor are respectively connected to one end and the other end of the varistor; A suppression capacitor, wherein two ends of the suppression capacitor are respectively connected to the third end and the fourth end of the first suppression inductor; A second suppression inductor, wherein a first end and a second end of the second suppression inductor are respectively connected to two ends of the suppression capacitor, and a third end and a fourth end of the second suppression inductor are respectively connected to a live line input end and a neutral line input end of the rectifier module.

5. The driving circuit according to claim 4, characterized in that: The rectifier module comprises: A full-wave rectifier bridge, wherein the live wire input end of the full-wave rectifier bridge is connected to the third end of the second suppression inductor, the neutral wire input end of the full-wave rectifier bridge is connected to the fourth end of the second suppression inductor, the positive output end of the full-wave rectifier bridge is connected to the positive input end of the filter module, and the negative output end of the full-wave rectifier bridge is connected to the negative input end of the filter module.

6. The driving circuit according to claim 5, characterized in that: The filtering module comprises: A first capacitor, wherein two ends of the first capacitor are respectively connected to the positive output terminal and the negative output terminal of the full-wave rectifier bridge; A first inductor, one end of which is connected to the positive output end of the full-wave rectifier bridge; a first resistor, wherein one end of the first resistor is connected to one end of the first inductor, and the other end of the first resistor is connected to the other end of the first inductor and an input end of the boost module; A second capacitor, one end of the second capacitor is connected to the other end of the first resistor, and the other end of the second capacitor is connected to the negative output end of the full-wave rectifier bridge and ground.

7. The driving circuit according to claim 6, characterized in that: The boost module comprises: A first chip, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a second inductor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a first diode, a second diode, a third diode, a fourth diode, a Schottky diode and a first switch tube; The first end of the first chip is connected to one end of the second resistor; the second end of the first chip is respectively connected to the cathode of the first diode, one end of the third capacitor and one end of the fourth capacitor; the third end of the first chip is respectively connected to one end of the fifth capacitor and one end of the sixth capacitor; the fifth end of the first chip is respectively connected to the sixth end of the first chip, the third resistor and one end of the seventh capacitor; the seventh end of the first chip is connected to one end of the fourth resistor; the eighth end of the first chip is respectively connected to the cathode of the second diode, the fifth resistor and one end of the eighth capacitor; the cathode of the Schottky diode is connected to the anode of the first diode; one end of the sixth resistor is connected to the other end of the fifth capacitor; one end of the seventh resistor, the eighth resistor and the ninth resistor are connected to the other end of the fourth resistor; the anode of the Schottky diode, the other end of the sixth resistor, the other end of the sixth capacitor, the fourth end of the first chip, the other end of the third resistor, the other end of the seventh capacitor, the other end of the seventh resistor, the other end of the eighth resistor, the other end of the ninth resistor and the first end of the first switch tube are grounded; the first end of the first switch tube is also connected to the ground The first switch tube is connected to one end of the tenth resistor; the second end of the first switch tube is respectively connected to the anode of the second diode, the other end of the fifth resistor and the other end of the tenth resistor; the third end of the first switch tube is respectively connected to one end of the ninth capacitor, one end of the tenth capacitor, one end of the eleventh resistor, one end of the second inductor and the anode of the third diode; the other end of the ninth capacitor is connected to the other end of the fourth resistor; the twelfth resistor is respectively connected to the other end of the tenth capacitor and the anode of the first diode; the other end of the eleventh resistor is connected to the other end of the eighth capacitor; one end of the thirteenth resistor is respectively connected to the cathode of the third diode, the cathode of the fourth diode, one end of the eleventh capacitor and one end of the twelfth capacitor; the anode of the fourth diode is respectively connected to the other end of the first inductor, the other end of the eleventh capacitor, the other end of the second inductor and one end of the fifteenth resistor; the fourteenth resistor is respectively connected to the sixth end of the first chip and the other end of the thirteenth resistor; the other end of the fifteenth resistor is connected to the other end of the second resistor; one end of the twelfth capacitor is connected to the input end of the spike absorption module; the other end of the twelfth capacitor is grounded.

8. The driving circuit according to claim 7, characterized in that: The peak absorption module comprises: a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a thirteenth capacitor and a fifth diode; One end of the sixteenth resistor is respectively connected to one end of the twelfth capacitor, one end of the seventeenth resistor, one end of the thirteenth capacitor and the first end of the flyback module; the other end of the sixteenth resistor is respectively connected to the other end of the seventeenth resistor, the other end of the thirteenth capacitor, one end of the eighteenth resistor and one end of the nineteenth resistor; the other end of the eighteenth resistor is respectively connected to the other end of the nineteenth resistor and the cathode of the fifth diode; the anode of the fifth diode is connected to the second end of the flyback module.

9. The driving circuit according to claim 8, characterized in that: The flyback module comprises: The second chip, the twentieth resistor, the twenty-first resistor, the twenty-second resistor, the twenty-third resistor, the twenty-fourth resistor, the twenty-fifth resistor, the twenty-sixth resistor, the twenty-seventh resistor, the twenty-eighth resistor, the twenty-ninth resistor, the thirtieth resistor, the fourteenth capacitor, the fifteenth capacitor, the sixteenth capacitor, the seventeenth capacitor, the sixth diode, the seventh diode, the eighth diode, the second switch tube, the transformer and the third suppression inductor; The first end of the second chip is respectively connected to one end of the 20th resistor, one end of the 21st resistor, one end of the 22nd resistor, one end of the 23rd resistor, the first end of the second switch tube and one end of the 14th capacitor; the other ends of the 20th resistor, the 21st resistor and the 22nd resistor are grounded; the second end of the second chip is connected to one end of the 24th resistor; the third end of the second chip is respectively connected to the third end of the second switch tube, the other end of the 14th capacitor and the first end of the transformer; the cathode of the sixth diode is respectively connected to the other end of the 24th resistor and one end of the 25th resistor; the anode of the sixth diode is respectively connected to the other end of the 23rd resistor, the other end of the 25th resistor and the second end of the second switch tube; the fourth end of the second chip is connected to one end of the 26th resistor, the other end of the 26th resistor is connected to the second end of the transformer and one end of the 13th capacitor; the fifth end of the second chip is connected to one end of the twenty-seventh resistor; the sixth end of the second chip is respectively connected to one end of the fifteenth capacitor, one end of the sixteenth capacitor and one end of the twenty-eighth resistor; the other end of the twenty-seventh resistor, the other end of the fifteenth capacitor, the other end of the sixteenth capacitor and the seventh end of the second chip are grounded; the cathode of the seventh diode is connected to the other end of the twenty-eighth resistor, and the anode of the seventh diode is connected to the third end of the transformer; the fourth end of the transformer is grounded; the fifth end of the transformer is connected to the anode of the eighth diode; the sixth end of the transformer is grounded; the cathode of the eighth diode is respectively connected to the twenty-ninth resistor, the thirtieth resistor, one end of the seventeenth capacitor and the first end of the third suppression inductor; the twenty-ninth resistor, the thirtieth resistor, the other end of the seventeenth capacitor and the second end of the third suppression inductor are grounded; the third end of the third suppression inductor is connected to the positive input end of the load; the fourth end of the third suppression inductor is connected to the negative output end of the load.

10. An electronic device, characterized in that: The electronic device comprises the driving circuit according to any one of claims 1 to 9.

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