Electrostatic protection driving circuit and data transmission equipment

Abstract

The invention discloses an electrostatic protection driving circuit and data transmission equipment. The circuit relates to the technical field of electrostatic protection, and comprises a first electrostatic protection branch circuit, the first end of the first electrostatic protection branch circuit is connected to the first output end of a driving circuit, and the second end of the first electrostatic protection branch circuit is connected to the second output end of the driving circuit; the first end of the electrostatic protection unit is connected with the first input end of the driving circuit, the second end of the electrostatic protection unit is connected with the second input end of the driving circuit, and the third end of the electrostatic protection unit is connected with the fourth end of the first electrostatic protection branch circuit; the fourth end of the electrostatic protection unit is connected with the fifth end of the first electrostatic protection branch; and a second electrostatic protection branch. According to the invention, the technical problem of poor stability of the driving circuit caused by low electrostatic protection capability of the driving circuit in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of data transmission and electrostatic protection, and in particular to an electrostatic protection driving circuit and a data transmission device. Background Art

[0002] With the improvement of the degree of social informatization, data transmission has become an indispensable technology in all walks of life, and the rate of data transmission often determines the efficiency of the work of relevant personnel. In order to improve the rate of data transmission in related technologies, the electrostatic protection ability of the driving circuit is often ignored. The electrostatic protection ability of the driving circuit in related technologies is low, resulting in excessive electrostatic discharge during the operation of the driving circuit, which seriously affects the data transmission and even causes damage to the components in the driving circuit. Therefore, the low electrostatic protection ability of the driving circuit in related technologies leads to poor stability of the driving circuit and low anti-interference ability, which seriously affects the stability of data transmission and affects the user experience.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiments of the present invention provide an electrostatic protection driving circuit and a data transmission device to at least solve the technical problem of poor stability of the driving circuit caused by low electrostatic protection capability of the driving circuit in the related art.

[0005] According to one aspect of an embodiment of the present invention, an electrostatic protection driving circuit is provided, comprising: a first electrostatic protection branch, wherein a first end of the first electrostatic protection branch is connected to a first output end of the driving circuit, a second end of the first electrostatic protection branch is connected to a second output end of the driving circuit, a third end of the first electrostatic protection branch is grounded, and the first electrostatic protection branch is used to eliminate electrostatic discharge returned from the output end of the driving circuit; an electrostatic protection unit, wherein a first end of the electrostatic protection unit is connected to a first input end of the driving circuit, a second end of the electrostatic protection unit is connected to a second input end of the driving circuit, a third end of the electrostatic protection unit is connected to a fourth end of the first electrostatic protection branch, a fourth end of the electrostatic protection unit is connected to a fifth end of the first electrostatic protection branch, a fifth end of the electrostatic protection unit and a sixth end of the electrostatic protection unit are grounded, and the electrostatic protection unit is used to eliminate electrostatic discharge that has not been consumed by the first electrostatic protection branch; and a second electrostatic protection branch, wherein a first end of the second electrostatic protection branch is connected to a seventh end of the electrostatic protection unit, a second end of the second electrostatic protection branch is connected to an eighth end of the electrostatic protection unit, a third end of the second electrostatic protection branch is grounded, and the second electrostatic protection branch is used to eliminate electrostatic discharge that has not been consumed by the electrostatic protection unit.

[0006] Further, the first electrostatic protection branch includes: a first inductor, a first end of the first inductor is connected to the first output end of the driving circuit; a second inductor, a first end of the second inductor is connected to the second end of the first inductor, and the second end of the second inductor is connected to the third end of the electrostatic protection unit; a third inductor, a first end of the third inductor is connected to the second output end of the driving circuit; a fourth inductor, a first end of the fourth inductor is connected to the second end of the third inductor, and the second end of the fourth inductor is connected to the fourth end of the electrostatic protection unit; a first clamping circuit, a first end of the first clamping circuit is connected to the first end of the second inductor and the second end of the first inductor, a second end of the first clamping circuit is connected to the first end of the fourth inductor and the second end of the third inductor, and the third end of the first clamping circuit is grounded; wherein the first inductor, the second inductor, the third inductor and the fourth inductor are used to absorb the parasitic capacitance generated by the first electrostatic protection branch.

[0007] Furthermore, the first electrostatic protection branch also includes: a first diode, the anode of the first diode is connected to the first end of the second inductor and the second end of the first inductor, and the cathode of the first diode is connected to the first end of the first clamping circuit; a second diode, the anode of the second diode is grounded, and the cathode of the second diode is connected to the first end of the second inductor and the second end of the first inductor; a third diode, the anode of the third diode is connected to the first end of the fourth inductor and the second end of the third inductor, and the cathode of the third diode is connected to the second end of the first clamping circuit; a fourth diode, the anode of the fourth diode is grounded, and the cathode of the fourth diode is connected to the first end of the fourth inductor and the second end of the third inductor.

[0008] Further, the electrostatic protection unit includes: a fifth inductor, a first end of the fifth inductor is connected to the fifth end of the electrostatic protection unit, and a second end of the fifth inductor is connected to the third end of the electrostatic protection unit; a sixth inductor, a first end of the sixth inductor is connected to the sixth end of the electrostatic protection unit, and a second end of the sixth inductor is connected to the fourth end of the electrostatic protection unit; a first resistor, a first end of the first resistor is connected to the second end of the fifth inductor, and a second end of the first resistor is connected to the first end of the electrostatic protection unit; a second resistor, a first end of the second resistor is connected to the second end of the sixth inductor, and a second end of the second resistor is connected to the second end of the electrostatic protection unit; a fifth diode, a positive electrode of the fifth diode is connected to the second end of the first resistor, and a negative electrode of the fifth diode is connected to the sixth end of the electrostatic protection unit; a sixth diode, a positive electrode of the sixth diode is connected to the second end of the second resistor, and a negative electrode of the sixth diode is connected to the seventh end of the electrostatic protection unit.

[0009] Furthermore, the circuit also includes: a first switch device, a first end of the first switch device is grounded, and a second end of the first switch device is connected to the fifth end of the electrostatic protection unit; a second switch device, a first end of the second switch device is grounded, and a second end of the second switch device is connected to the sixth end of the electrostatic protection unit; a first controller, the first controller is connected to the third end of the first switch device and is used to control the on and off of the first switch device; and a second controller, the second controller is connected to the third end of the second switch device and is used to control the on and off of the second switch device.

[0010] Furthermore, the circuit also includes: a third resistor, a first end of the third resistor is connected to the second end of the first switching device, and a second end of the third resistor is connected to the fifth end of the electrostatic protection unit; a fourth resistor, a first end of the fourth resistor is connected to the second end of the second switching device, and a second end of the fourth resistor is connected to the sixth end of the electrostatic protection unit.

[0011] Furthermore, impedances of the third resistor, the fourth resistor, the first switch device and the second switch device are matched in pairs.

[0012] Furthermore, the circuit also includes: a third switching device, a first end of the third switching device is connected to the first input end of the driving circuit, a second end of the third switching device is connected to the first end of the electrostatic protection unit, and a third end of the third switching device is grounded; a fourth switching device, a first end of the fourth switching device is connected to the second input end of the driving circuit, a second end of the fourth switching device is connected to the second end of the electrostatic protection unit, and a third end of the fourth switching device is grounded.

[0013] Furthermore, the second electrostatic protection branch is a second clamping circuit.

[0014] According to another aspect of the embodiments of the present invention, a data transmission device is provided. The device includes: the electrostatic protection driving circuit in each embodiment of the present invention.

[0015] In an embodiment of the present invention, an electrostatic protection driving circuit is provided, which includes: a first electrostatic protection branch, wherein the first end of the first electrostatic protection branch is connected to the first output end of the driving circuit, the second end of the first electrostatic protection branch is connected to the second output end of the driving circuit, and the third end of the first electrostatic protection branch is grounded; an electrostatic protection unit, wherein the first end of the electrostatic protection unit is connected to the first input end of the driving circuit, the second end of the electrostatic protection unit is connected to the second input end of the driving circuit, the third end of the electrostatic protection unit is connected to the fourth end of the first electrostatic protection branch, the fourth end of the electrostatic protection unit is connected to the fifth end of the first electrostatic protection branch, and the fifth end and the sixth end of the electrostatic protection unit are grounded; a second electrostatic protection branch, wherein the first end of the second electrostatic protection branch is connected to the seventh end of the electrostatic protection unit, the second end of the second electrostatic protection branch is connected to the eighth end of the electrostatic protection unit, and the third end of the second electrostatic protection branch is grounded. In the present application, a first electrostatic protection branch is set to eliminate the electrostatic discharge returned from the output end of the driving circuit. If the first electrostatic protection branch cannot completely eliminate the electrostatic discharge, the electrostatic discharge that has not been consumed by the first electrostatic protection unit is eliminated by the set electrostatic protection unit. If the electrostatic protection unit still has not consumed the electrostatic discharge, the electrostatic discharge that has not been consumed by the electrostatic protection unit is eliminated by the set second electrostatic protection branch. This allows the electrostatic protection circuit provided in the present application to fully consume the electrostatic discharge in the driving circuit, thereby achieving the purpose of improving the electrostatic protection capability of the driving circuit, thereby achieving the technical effect of improving the stability of the driving circuit, and further solving the technical problem of poor stability of the driving circuit caused by the low electrostatic protection capability of the driving circuit in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 is a schematic structural diagram of an optional electrostatic protection driving circuit according to an embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of an optional first electrostatic protection branch according to an embodiment of the present invention;

[0019] Figure 3 is a schematic structural diagram of a preferred first electrostatic protection branch according to an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of an optional electrostatic protection unit according to an embodiment of the present invention;

[0021] Figure 5It is a schematic structural diagram of a preferred electrostatic protection driving circuit according to an embodiment of the present invention.

[0022] Among them, the above-mentioned drawings include the following drawing marks: 11, a first electrostatic protection branch; 12, an electrostatic protection unit; 13, a second electrostatic protection branch; 111, a first output end of the driving circuit; 112, a second output end of the driving circuit; 121, a first input end of the driving circuit; 122, a second input end of the driving circuit; 21, a first clamping circuit; 211, a first inductor; 212, a second inductor; 213, a third inductor; 214, a fourth inductor; 311, a first diode; 312, a second diode; 313, a third diode; 314, a fourth diode; 411, a first resistor; 412, a second resistor; 413, a fifth diode; 414, a sixth diode; 415, a fifth inductor; 416, a sixth inductor; 511, a first switching device; 512, a second switching device; 513, a first controller; 514, a second controller; 515, a third resistor; 516, a fourth resistor; 517, a third switching device; 518, a fourth switching device. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0027] Figure 1 is a schematic diagram of an optional electrostatic protection driving circuit according to an embodiment of the present invention, combined with Figure 1 As shown, according to a specific embodiment of the present application, an electrostatic protection driving circuit is provided, which includes: a first electrostatic protection branch 11, a first end of the first electrostatic protection branch 11 is connected to a first output terminal 111 of the driving circuit, a second end of the first electrostatic protection branch 11 is connected to a second output terminal 112 of the driving circuit, a third end of the first electrostatic protection branch 11 is grounded, and the first electrostatic protection branch 11 is used to eliminate electrostatic discharge returned from the output terminal of the driving circuit; an electrostatic protection unit 12, a first end of the electrostatic protection unit 12 is connected to a first input terminal 121 of the driving circuit, a second end of the electrostatic protection unit 12 is connected to a second input terminal 122 of the driving circuit, and a third end of the first electrostatic protection branch 11 is grounded. The third end is connected to the fourth end of the first electrostatic protection branch 11, the fourth end of the electrostatic protection unit 12 is connected to the fifth end of the first electrostatic protection branch 11, the fifth end of the electrostatic protection unit 12 and the sixth end of the electrostatic protection unit 12 are grounded, and the electrostatic protection unit 12 is used to eliminate the electrostatic discharge that has not been consumed by the first electrostatic protection branch 11; the second electrostatic protection branch 13, the first end of the second electrostatic protection branch 13 is connected to the seventh end of the electrostatic protection unit 12, the second end of the second electrostatic protection branch 13 is connected to the eighth end of the electrostatic protection unit 12, the third end of the second electrostatic protection branch 13 is grounded, and the second electrostatic protection branch 13 is used to eliminate the electrostatic discharge that has not been consumed by the electrostatic protection unit 12.

[0028] The above-mentioned driving circuit refers to a circuit that controls and drives other electronic components or devices. In the present application, the above-mentioned driving circuit refers to a circuit used to drive the device to transmit data. During operation, the above-mentioned driving circuit will return electrostatic discharge from the output end of the above-mentioned driving circuit, which will affect the performance and stability of the driving circuit.

[0029] The above-mentioned electrostatic protection refers to measures to eliminate electrostatic discharge in the above-mentioned driving circuit to reduce the damage caused by electrostatic discharge to other electronic equipment in the above-mentioned driving circuit. In the present application, the electrostatic discharge returned from the output end of the driving circuit is eliminated by setting a first electrostatic protection branch, an electrostatic protection unit and a second electrostatic protection branch to perform electrostatic protection on the above-mentioned driving circuit.

[0030] The above-mentioned first electrostatic protection branch refers to a circuit connected to the output end of the above-mentioned driving circuit and used to eliminate the electrostatic discharge returned from the output end of the driving circuit. The above-mentioned first electrostatic protection branch can be a clamping circuit, a resistor-capacitor absorption network (RC absorption network for short) or an electrostatic discharge protection chip (ESD protection chip for short), etc. In the present application, the above-mentioned first electrostatic protection branch can be a circuit composed of an inductor and a clamping circuit to eliminate the electrostatic discharge returned from the output end of the driving circuit.

[0031] The electrostatic protection unit refers to a circuit connected to the first electrostatic protection branch for eliminating the electrostatic discharge that has not been consumed by the first electrostatic protection branch. When the electrostatic discharge in the driving circuit cannot be completely consumed by the first electrostatic protection branch, the remaining electrostatic discharge will be input to the electrostatic protection unit through the fourth end of the first electrostatic protection branch and the fifth end of the first electrostatic protection branch, and the electrostatic protection unit consumes the electrostatic discharge that has not been consumed by the first electrostatic protection branch. Among them, the electrostatic protection unit can be: a circuit provided with a transient voltage suppression diode, a circuit provided with a varistor, a circuit provided with a gas discharge tube, a circuit provided with an electrostatic discharge protection chip, or a resistor-capacitor absorption network. In the present application, the electrostatic protection unit is a circuit composed of an inductor, a resistor and a diode for eliminating the electrostatic discharge that has not been consumed by the first electrostatic protection branch.

[0032] The second electrostatic protection branch refers to a circuit connected to the electrostatic protection unit for eliminating the electrostatic discharge that has not been consumed by the electrostatic protection unit. When the electrostatic discharge in the driving circuit is eliminated by the first electrostatic protection branch and the electrostatic protection unit, there is still residual electrostatic discharge. The residual electrostatic discharge will be transmitted to the second electrostatic protection branch through the seventh end of the electrostatic protection unit and the eighth end of the electrostatic protection unit, and the residual electrostatic discharge will be eliminated through the second electrostatic protection branch. Among them, the second electrostatic protection branch can be: a clamping circuit, a resistor-capacitor absorption network or an electrostatic discharge protection chip, etc. In the present application, the second electrostatic protection branch can be a clamping circuit.

[0033] In an optional embodiment, the electrostatic protection driving circuit can use a circuit composed of an inductor and a clamping circuit as a first electrostatic protection branch, can use a circuit composed of an inductor, a resistor and a diode as an electrostatic protection unit, and can use a clamping circuit as a second electrostatic protection branch; the first end of the first electrostatic protection branch is connected to the first output end of the driving circuit, the second end of the first electrostatic protection branch is connected to the second output end of the driving circuit, the first end of the electrostatic protection unit is connected to the first input end of the driving circuit, the second end of the electrostatic protection unit is connected to the second input end of the driving circuit, the third end of the electrostatic protection unit is connected to the fourth end of the first electrostatic protection branch, the fourth end of the electrostatic protection unit is connected to the fifth end of the first electrostatic protection branch, the fifth end of the electrostatic protection unit and the sixth end of the electrostatic protection unit are grounded, the first end of the second electrostatic protection branch is connected to the seventh end of the electrostatic protection unit, the second end of the second electrostatic protection branch is connected to the eighth end of the electrostatic protection unit, and the third end of the second electrostatic protection branch is grounded. In the present application, the electrostatic discharge returned from the output end of the driving circuit is first input into the first electrostatic protection branch through the first end of the first electrostatic protection branch and the second end of the first electrostatic protection branch. The first electrostatic protection branch eliminates the electrostatic discharge. When the first electrostatic protection branch cannot completely consume the electrostatic discharge, the remaining electrostatic discharge will flow into the third end and the fourth end of the electrostatic protection unit through the fourth end of the first electrostatic protection branch and the fifth end of the first electrostatic protection branch respectively. After the electrostatic protection unit receives the remaining electrostatic discharge, it consumes the remaining electrostatic discharge. When the electrostatic protection unit cannot completely consume the remaining electrostatic discharge, the remaining electrostatic discharge needs to be eliminated through the second electrostatic protection branch. The remaining electrostatic discharge flows into the first end and the second end of the second electrostatic protection branch through the seventh end and the eighth end of the electrostatic protection unit respectively. After the second electrostatic protection branch receives the residual electrostatic discharge, it eliminates the residual electrostatic discharge.

[0034] In another optional embodiment, the electrostatic protection driving circuit can also use a resistor-capacitor absorption network as a first electrostatic protection branch, can also use a circuit provided with a transient voltage suppression diode as an electrostatic protection unit, and can also use an electrostatic discharge protection chip as a second electrostatic protection branch. The first end of the first electrostatic protection branch is connected to the first output end of the driving circuit, the second end of the first electrostatic protection branch is connected to the second output end of the driving circuit, the first end of the electrostatic protection unit is connected to the first input end of the driving circuit, the second end of the electrostatic protection unit is connected to the second input end of the driving circuit, the third end of the electrostatic protection unit is connected to the fourth end of the first electrostatic protection branch, the fourth end of the electrostatic protection unit is connected to the fifth end of the first electrostatic protection branch, the fifth end of the electrostatic protection unit and the sixth end of the electrostatic protection unit are grounded, the first end of the second electrostatic protection branch is connected to the seventh end of the electrostatic protection unit, the second end of the second electrostatic protection branch is connected to the eighth end of the electrostatic protection unit, and the third end of the second electrostatic protection branch is grounded. In the present application, the electrostatic discharge returned from the output end of the driving circuit is first input into the first electrostatic protection branch through the first end of the first electrostatic protection branch and the second end of the first electrostatic protection branch. The first electrostatic protection branch eliminates the electrostatic discharge. When the first electrostatic protection branch cannot completely consume the electrostatic discharge, the remaining electrostatic discharge will flow into the third end and the fourth end of the electrostatic protection unit through the fourth end of the first electrostatic protection branch and the fifth end of the first electrostatic protection branch respectively. After the electrostatic protection unit receives the remaining electrostatic discharge, it consumes the remaining electrostatic discharge. When the electrostatic protection unit cannot completely consume the remaining electrostatic discharge, the remaining electrostatic discharge needs to be eliminated through the second electrostatic protection branch. The remaining electrostatic discharge flows into the first end and the second end of the second electrostatic protection branch through the seventh end and the eighth end of the electrostatic protection unit respectively. After the second electrostatic protection branch receives the residual electrostatic discharge, it eliminates the residual electrostatic discharge.

[0035] In another optional embodiment, a clamping circuit can also be used as the first electrostatic protection branch, a circuit provided with a gas discharge tube can also be used as an electrostatic protection unit, and a clamping circuit can be used as the second electrostatic protection branch; the first end of the first electrostatic protection branch is connected to the first output end of the driving circuit, the second end of the first electrostatic protection branch is connected to the second output end of the driving circuit, the first end of the electrostatic protection unit is connected to the first input end of the driving circuit, the second end of the electrostatic protection unit is connected to the second input end of the driving circuit, the third end of the electrostatic protection unit is connected to the fourth end of the first electrostatic protection branch, the fourth end of the electrostatic protection unit is connected to the fifth end of the first electrostatic protection branch, the fifth end of the electrostatic protection unit and the sixth end of the electrostatic protection unit are grounded, the first end of the second electrostatic protection branch is connected to the seventh end of the electrostatic protection unit, the second end of the second electrostatic protection branch is connected to the eighth end of the electrostatic protection unit, and the third end of the second electrostatic protection branch is grounded. In the present application, the electrostatic discharge returned from the output end of the driving circuit is first input into the first electrostatic protection branch through the first end of the first electrostatic protection branch and the second end of the first electrostatic protection branch. The first electrostatic protection branch eliminates the electrostatic discharge. When the first electrostatic protection branch cannot completely consume the electrostatic discharge, the remaining electrostatic discharge will flow into the third end and the fourth end of the electrostatic protection unit through the fourth end of the first electrostatic protection branch and the fifth end of the first electrostatic protection branch respectively. After the electrostatic protection unit receives the remaining electrostatic discharge, it consumes the remaining electrostatic discharge. When the electrostatic protection unit cannot completely consume the remaining electrostatic discharge, the remaining electrostatic discharge needs to be eliminated through the second electrostatic protection branch. The remaining electrostatic discharge flows into the first end and the second end of the second electrostatic protection branch through the seventh end and the eighth end of the electrostatic protection unit respectively. After the second electrostatic protection branch receives the residual electrostatic discharge, it eliminates the residual electrostatic discharge.

[0036] In the present application, a first electrostatic protection branch, an electrostatic protection unit, and a second electrostatic protection branch are provided so that when the electrostatic discharge is large, it is first eliminated through the first electrostatic protection branch. When the first electrostatic protection branch cannot completely consume the electrostatic discharge, the electrostatic discharge is eliminated through the electrostatic protection unit. When the electrostatic protection unit cannot completely consume the electrostatic discharge, the electrostatic discharge is eliminated through the second electrostatic protection branch until the electrostatic discharge is completely consumed, thereby effectively improving the electrostatic protection capability of the electrostatic protection drive circuit, improving the stability of the drive circuit, and improving the user experience.

[0037] Through the above circuit, the circuit includes: a first electrostatic protection branch, the first end of the first electrostatic protection branch is connected to the first output end of the driving circuit, the second end of the first electrostatic protection branch is connected to the second output end of the driving circuit, and the third end of the first electrostatic protection branch is grounded; an electrostatic protection unit, the first end of the electrostatic protection unit is connected to the first input end of the driving circuit, the second end of the electrostatic protection unit is connected to the second input end of the driving circuit, the third end of the electrostatic protection unit is connected to the fourth end of the first electrostatic protection branch, the fourth end of the electrostatic protection unit is connected to the fifth end of the first electrostatic protection branch, and the fifth end of the electrostatic protection unit and the sixth end of the electrostatic protection unit are grounded; a second electrostatic protection branch, the first end of the second electrostatic protection branch is connected to the seventh end of the electrostatic protection unit, the second end of the second electrostatic protection branch is connected to the eighth end of the electrostatic protection unit, and the third end of the second electrostatic protection branch is grounded. In the present application, a first electrostatic protection branch is set to eliminate the electrostatic discharge returned from the output end of the driving circuit. If the first electrostatic protection branch cannot completely eliminate the electrostatic discharge, the electrostatic discharge that has not been consumed by the first electrostatic protection unit is eliminated by the set electrostatic protection unit. If the electrostatic protection unit still has not consumed the electrostatic discharge, the electrostatic discharge that has not been consumed by the electrostatic protection unit is eliminated by the set second electrostatic protection branch. This allows the electrostatic protection circuit provided in the present application to fully consume the electrostatic discharge in the driving circuit, thereby achieving the purpose of improving the electrostatic protection capability of the driving circuit, thereby achieving the technical effect of improving the stability of the driving circuit, and further solving the technical problem of poor stability of the driving circuit caused by the low electrostatic protection capability of the driving circuit in the related technology.

[0038] Optionally, the first electrostatic protection branch includes: a first inductor, a first end of the first inductor is connected to the first output end of the driving circuit; a second inductor, a first end of the second inductor is connected to the second end of the first inductor, and the second end of the second inductor is connected to the third end of the electrostatic protection unit; a third inductor, a first end of the third inductor is connected to the second output end of the driving circuit; a fourth inductor, a first end of the fourth inductor is connected to the second end of the third inductor, and the second end of the fourth inductor is connected to the fourth end of the electrostatic protection unit; a first clamping circuit, a first end of the first clamping circuit is connected to the first end of the second inductor and the second end of the first inductor, a second end of the first clamping circuit is connected to the first end of the fourth inductor and the second end of the third inductor, and the third end of the first clamping circuit is grounded; wherein the first inductor, the second inductor, the third inductor and the fourth inductor are used to absorb the parasitic capacitance generated by the first electrostatic protection branch.

[0039] The above-mentioned parasitic capacitance refers to the non-ideal capacitance formed by the proximity of conductors in the circuit and the coupling between the conductors and the ground or other conductors. In the present application, since a large amount of parasitic capacitance is introduced by setting the first electrostatic protection branch, the electrostatic protection unit and the second electrostatic protection branch, the first inductor, the second inductor, the third inductor and the fourth inductor are required to absorb the above-mentioned parasitic capacitance.

[0040] In an optional embodiment, Figure 2 is a schematic diagram of the structure of an optional first electrostatic protection branch according to an embodiment of the present invention, such as Figure 2As shown, the first electrostatic protection branch includes: a first inductor 211, a second inductor 212, a third inductor 213, a fourth inductor 214 and a first clamping circuit 21. The first end of the first inductor 211 is connected to the first output end 111 of the driving circuit, the second end of the first inductor 211 is connected to the first end of the second inductor 212, the second end of the second inductor 212 is connected to the third end of the electrostatic protection unit 12, the first end of the third inductor 213 is connected to the second output end 112 of the driving circuit, the second end of the third inductor 213 is connected to the first end of the fourth inductor 214, and the second end of the fourth inductor 214 is connected to the fourth end of the electrostatic protection unit 12. The first end of the first clamping circuit 21 is connected to the first end of the second inductor 212 and the second end of the first inductor 211, the second end of the first clamping circuit 21 is connected to the second end of the third inductor 213 and the first end of the fourth inductor 214, and the third end of the first clamping circuit 21 is grounded. When the first output terminal 111 of the driving circuit returns electrostatic discharge, the electrostatic discharge flows through the first inductor 211 through the first end of the first inductor 211, and flows into the first clamping circuit 21 from the second end of the first inductor 211; when the second output terminal 112 of the driving circuit returns electrostatic discharge, the electrostatic discharge flows through the third inductor 213 through the first end of the third inductor 213, and flows into the first clamping circuit 21 from the second end of the third inductor 213. The first clamping circuit 21 eliminates the electrostatic discharge. If the first clamping circuit cannot completely consume the electrostatic discharge, the remaining electrostatic discharge flows into the third end and the fourth end of the electrostatic protection unit 12 through the second end of the second inductor 212 and the second end of the fourth inductor 214 respectively. The electrostatic protection unit 12 eliminates the remaining electrostatic discharge. The first end of the electrostatic protection unit 12 is connected to the first input end 121 of the driving circuit, the second end of the electrostatic protection unit 12 is connected to the second input end 122 of the driving circuit, the first end of the second electrostatic protection branch 13 is connected to the seventh end of the electrostatic protection unit 12, and the second end of the second electrostatic protection branch 13 is connected to the eighth end of the electrostatic protection unit 12. When the electrostatic protection unit 12 cannot completely consume the remaining electrostatic discharge, the remaining electrostatic discharge is transmitted to the second electrostatic protection branch 13 through the seventh end of the electrostatic protection unit 12 and the eighth end of the electrostatic protection unit 12, respectively, and the remaining electrostatic discharge is consumed by the second electrostatic protection branch 13. Since the first electrostatic protection branch, the electrostatic protection unit 12, and the second electrostatic protection branch 13 are provided, a large parasitic capacitance is introduced into the driving circuit. The parasitic capacitance is consumed by forming a T-type filter structure with the first inductor 211 and the second inductor 212, and forming a T-type filter structure with the third inductor 213 and the fourth inductor 214.

[0041] In the present application, by setting the first inductor, the second inductor, the third inductor and the fourth inductor to eliminate the parasitic capacitance in the first electrostatic protection branch, the data transmission speed is effectively improved, the stability of the driving circuit is improved, and the user experience is improved.

[0042] Optionally, the first electrostatic protection branch also includes: a first diode, the anode of the first diode is connected to the first end of the second inductor and the second end of the first inductor, and the cathode of the first diode is connected to the first end of the first clamping circuit; a second diode, the anode of the second diode is grounded, and the cathode of the second diode is connected to the first end of the second inductor and the second end of the first inductor; a third diode, the anode of the third diode is connected to the first end of the fourth inductor and the second end of the third inductor, and the cathode of the third diode is connected to the second end of the first clamping circuit; a fourth diode, the anode of the fourth diode is grounded, and the cathode of the fourth diode is connected to the first end of the fourth inductor and the second end of the third inductor.

[0043] In an optional embodiment, Figure 3 is a schematic diagram of a preferred structure of a first electrostatic protection branch according to an embodiment of the present invention, such as Figure 3As shown, the first electrostatic protection branch also includes: a first diode 311, a second diode 312, a third diode 313 and a fourth diode 314, the anode of the first diode 311 is connected to the first end of the second inductor 212 and the second end of the first inductor 211, the cathode of the first diode 311 is connected to the first end of the first clamping circuit 21, the anode of the second diode 312 is grounded, the cathode of the second diode 312 is connected to the first end of the second inductor 212 and the second end of the first inductor 211, the anode of the third diode 313 is connected to the first end of the fourth inductor 214 and the second end of the third inductor 213, the cathode of the third diode 313 is connected to the second end of the first clamping circuit 21, the anode of the fourth diode 314 is grounded, and the cathode of the fourth diode 314 is connected to the first end of the fourth inductor 214 and the second end of the third inductor 213. When the first output terminal 111 of the driving circuit returns electrostatic discharge, the electrostatic discharge flows through the first inductor 211 through the first end of the first inductor 211, flows into the positive electrode of the first diode 311 from the second end of the first inductor 211, and flows into the first clamping circuit 21 through the negative electrode of the first diode 311; when the second output terminal 112 of the driving circuit returns electrostatic discharge, the electrostatic discharge flows through the third inductor 213 through the first end of the third inductor 213, flows into the positive electrode of the third diode 313 from the second end of the third inductor 213, and flows into the first clamping circuit 21 through the negative electrode of the third diode 313. The first clamping circuit 21 eliminates the electrostatic discharge. If the first clamping circuit cannot completely consume the electrostatic discharge, the remaining electrostatic discharge flows into the third end and the fourth end of the electrostatic protection unit 12 through the second end of the second inductor 212 and the second end of the fourth inductor 214 respectively. The electrostatic protection unit 12 eliminates the remaining electrostatic discharge. The first end of the electrostatic protection unit 12 is connected to the first input end 121 of the driving circuit, the second end of the electrostatic protection unit 12 is connected to the second input end 122 of the driving circuit, the first end of the second electrostatic protection branch 13 is connected to the seventh end of the electrostatic protection unit 12, and the second end of the second electrostatic protection branch 13 is connected to the eighth end of the electrostatic protection unit 12. When the electrostatic protection unit 12 cannot completely consume the remaining electrostatic discharge, the remaining electrostatic discharge is transmitted to the second electrostatic protection branch 13 through the seventh end of the electrostatic protection unit 12 and the eighth end of the electrostatic protection unit 12, respectively, and the residual electrostatic discharge is consumed by the second electrostatic protection branch 13.

[0044] In the present application, the first diode and the third diode are set to direct the electrostatic discharge in the driving circuit to the first clamping circuit and prevent the electrostatic discharge from flowing back. The second diode and the fourth diode are set to prevent the electrostatic discharge from directly reaching the ground, thereby effectively improving the stability of the first electrostatic protection branch, improving the stability of the electrostatic protection driving circuit, and improving the user experience.

[0045] Optionally, the electrostatic protection unit includes: a fifth inductor, a first end of the fifth inductor is connected to the fifth end of the electrostatic protection unit, and a second end of the fifth inductor is connected to the third end of the electrostatic protection unit; a sixth inductor, a first end of the sixth inductor is connected to the sixth end of the electrostatic protection unit, and a second end of the sixth inductor is connected to the fourth end of the electrostatic protection unit; a first resistor, a first end of the first resistor is connected to the second end of the fifth inductor, and a second end of the first resistor is connected to the first end of the electrostatic protection unit; a second resistor, a first end of the second resistor is connected to the second end of the sixth inductor, and a second end of the second resistor is connected to the second end of the electrostatic protection unit; a fifth diode, a positive electrode of the fifth diode is connected to the second end of the first resistor, and a negative electrode of the fifth diode is connected to the sixth end of the electrostatic protection unit; a sixth diode, a positive electrode of the sixth diode is connected to the second end of the second resistor, and a negative electrode of the sixth diode is connected to the seventh end of the electrostatic protection unit.

[0046] In an optional embodiment, Figure 4 is a schematic structural diagram of an optional electrostatic protection unit according to an embodiment of the present invention, such as Figure 4As shown, the electrostatic protection unit includes: a fifth inductor 415, a sixth inductor 416, a first resistor 411, a second resistor 412, a fifth diode 413 and a sixth diode 414, a first end of the fifth inductor 415 is connected to the fifth end of the electrostatic protection unit, a second end of the fifth inductor 415 is connected to the third end of the electrostatic protection unit, a first end of the sixth inductor 416 is connected to the sixth end of the electrostatic protection unit, a second end of the sixth inductor 416 is connected to the fourth end of the electrostatic protection unit, a first end of the first resistor 411 is connected to the first end of the fifth inductor 415, and a second end of the sixth inductor 416 is connected to the fourth end of the electrostatic protection unit. The two ends are connected, the second end of the first resistor 411 is connected to the first end of the electrostatic protection unit, the first end of the second resistor 412 is connected to the second end of the sixth inductor 416, the second end of the second resistor 412 is connected to the second end of the electrostatic protection unit, the anode of the fifth diode 413 is connected to the second end of the first resistor 411, the cathode of the fifth diode 413 is connected to the sixth end of the electrostatic protection unit, the anode of the sixth diode 414 is connected to the second end of the second resistor 412, and the cathode of the sixth diode 414 is connected to the seventh end of the electrostatic protection unit. When the first output terminal 111 of the driving circuit returns electrostatic discharge, the electrostatic discharge flows through the first inductor 211 through the first end of the first inductor 211, flows into the positive electrode of the first diode 311 from the second end of the first inductor 211, and flows into the first clamping circuit 21 through the negative electrode of the first diode 311; when the second output terminal 112 of the driving circuit returns electrostatic discharge, the electrostatic discharge flows through the third inductor 213 through the first end of the third inductor 213, flows into the positive electrode of the third diode 313 from the second end of the third inductor 213, and flows into the first clamping circuit 21 through the negative electrode of the third diode 313. The first clamping circuit 21 eliminates the electrostatic discharge. If the first clamping circuit cannot completely consume the electrostatic discharge, the remaining electrostatic discharge flows into the third end and the fourth end of the electrostatic protection unit through the second end of the second inductor 212 and the second end of the fourth inductor 214 respectively. The remaining electrostatic discharge flows into the first end of the first resistor 411 and the first end of the second resistor 412 respectively through the third end of the electrostatic protection unit and the fourth end of the electrostatic protection unit. The first resistor 411 and the fifth diode 413 are used to eliminate the remaining electrostatic discharge, and the second resistor 412 and the sixth diode 414 are used to eliminate the remaining electrostatic discharge. The remaining electrostatic discharge flows into the positive electrode of the fifth diode 413 through the second end of the first resistor 411, and the remaining electrostatic discharge also flows into the positive electrode of the sixth diode 414 through the second end of the second resistor 412. When the electrostatic protection unit cannot completely consume the remaining electrostatic discharge, the remaining electrostatic discharge flows into the second electrostatic protection branch 13 through the negative electrode of the fifth diode 413 and the negative electrode of the sixth diode 414, respectively, and the residual electrostatic discharge is consumed through the second electrostatic protection branch 13. Among them, the fifth inductor 415 and the second inductor 212 form a T-type structure, and the sixth inductor 416 and the fourth inductor 214 are used to eliminate the parasitic capacitance in the electrostatic protection unit.

[0047] In the present application, the parasitic capacitance in the electrostatic protection unit is eliminated by setting the fifth inductor and the sixth inductor, and the remaining electrostatic discharge is eliminated by setting the first resistor, the second resistor, the fifth diode and the sixth diode, thereby effectively improving the stability and safety of the electrostatic protection drive circuit and improving the user experience.

[0048] Optionally, the circuit also includes: a first switching device, a first end of the first switching device is grounded, and a second end of the first switching device is connected to a fifth end of the electrostatic protection unit; a second switching device, a first end of the second switching device is grounded, and a second end of the second switching device is connected to a sixth end of the electrostatic protection unit; a first controller, the first controller is connected to a third end of the first switching device and is used to control the on and off of the first switching device; and a second controller, the second controller is connected to a third end of the second switching device and is used to control the on and off of the second switching device.

[0049] In an optional embodiment, Figure 5 is a schematic diagram of a preferred electrostatic protection driving circuit according to an embodiment of the present invention. Figure 5 As shown, the electrostatic protection driving circuit also includes: a first switch device 511, a second switch device 512, a first controller 513 and a second controller 514. The first end of the first switch device 511 is grounded, the second end of the first switch device 511 is connected to the fifth end of the electrostatic protection unit, the first end of the second switch device 512 is grounded, the second end of the second switch device 512 is connected to the sixth end of the electrostatic protection unit, the first controller 513 is connected to the third end of the first switch device 511, and the second controller 514 is connected to the third end of the second switch device 512. The first controller 513 is used to control the on and off of the first switch device 511, and the second controller 514 is used to control the on and off of the second switch device 512.

[0050] In the present application, by setting a first switch device, a second switch device, a first controller and a second controller, the user can control the on and off of the fifth end of the electrostatic protection unit and the sixth end of the electrostatic protection unit according to needs to control the opening and closing of the electrostatic protection function of the driving circuit, which effectively improves the use scenario of the electrostatic protection driving circuit and improves the user experience.

[0051] Optionally, the circuit also includes: a third resistor, a first end of the third resistor is connected to the second end of the first switching device, and a second end of the third resistor is connected to the fifth end of the electrostatic protection unit; a fourth resistor, a first end of the fourth resistor is connected to the second end of the second switching device, and a second end of the fourth resistor is connected to the sixth end of the electrostatic protection unit.

[0052] In an optional embodiment, if Figure 5As shown, the electrostatic protection driving circuit also includes: a third resistor 515 and a fourth resistor 516, the first end of the third resistor 515 is connected to the second end of the first switching device 511, the second end of the third resistor 515 is connected to the fifth end of the electrostatic protection unit, the first end of the fourth resistor 516 is connected to the second end of the second switching device 512, and the second end of the fourth resistor 516 is connected to the sixth end of the electrostatic protection unit.

[0053] Optionally, impedances of the third resistor, the fourth resistor, the first switch device and the second switch device are matched in pairs.

[0054] The above-mentioned impedance matching means that the input impedance and output impedance of multiple circuit elements connected together are equal. In the present application, the impedances of the third resistor, the fourth resistor, the first switching device and the second switching device are matched in pairs to reduce the power loss in the electrostatic protection driving circuit.

[0055] In an optional embodiment, impedances of the third resistor, the fourth resistor, the first switch device, and the second switch device are matched in pairs.

[0056] In the present application, impedance matching is performed between the third resistor, the fourth resistor, the first switch device, and the second switch device to reduce power loss in the electrostatic protection drive circuit, thereby improving the user experience.

[0057] Optionally, the circuit also includes: a third switching device, a first end of the third switching device is connected to the first input end of the driving circuit, a second end of the third switching device is connected to the first end of the electrostatic protection unit, and a third end of the third switching device is grounded; a fourth switching device, a first end of the fourth switching device is connected to the second input end of the driving circuit, a second end of the fourth switching device is connected to the second end of the electrostatic protection unit, and a third end of the fourth switching device is grounded.

[0058] In an optional embodiment, if Figure 5As shown, the electrostatic protection driving circuit further includes: a third switch device 517 and a fourth switch device 518, wherein the first end of the third switch device 517 is connected to the first input end 121 of the driving circuit, the second end of the third switch device 517 is connected to the first end of the electrostatic protection unit, the third end of the third switch device 517 is grounded, the first end of the fourth switch device 518 is connected to the second input end 122 of the driving circuit, the second end of the fourth switch device 518 is connected to the second end of the electrostatic protection unit, and the third end of the fourth switch device 518 is grounded. The first input end 121 of the driving circuit and the second input end 122 of the driving circuit are powered, the third switch device 517 and the fourth switch device 518 are closed, and the driving circuit starts to work. When the first output end 111 of the driving circuit returns electrostatic discharge, the electrostatic discharge flows through the first inductor 211 through the first end of the first inductor 211, flows into the positive electrode of the first diode 311 from the second end of the first inductor 211, and flows into the first clamping circuit 21 through the negative electrode of the first diode 311; when the second output end 112 of the driving circuit returns electrostatic discharge, the electrostatic discharge flows into the positive electrode of the first diode 311 through the negative electrode of the first diode 311; During discharge, the electrostatic discharge flows through the third inductor 213 through the first end of the third inductor 213, flows into the positive electrode of the third diode 313 from the second end of the third inductor 213, and flows into the first clamping circuit 21 through the negative electrode of the third diode 313. The first clamping circuit 21 eliminates the electrostatic discharge. If the first clamping circuit cannot completely consume the electrostatic discharge, the remaining electrostatic discharge flows into the third end and the fourth end of the electrostatic protection unit through the second end of the second inductor 212 and the second end of the fourth inductor 214 respectively. The remaining electrostatic discharge flows into the first end of the first resistor 411 and the first end of the second resistor 412 respectively through the third end of the electrostatic protection unit and the fourth end of the electrostatic protection unit. The first resistor 411 and the fifth diode 413 are used to eliminate the remaining electrostatic discharge, and the second resistor 412 and the sixth diode 414 are used to eliminate the remaining electrostatic discharge. The remaining electrostatic discharge flows into the positive electrode of the fifth diode 413 through the second end of the first resistor 411, and the remaining electrostatic discharge also flows into the positive electrode of the sixth diode 414 through the second end of the second resistor 412. When the electrostatic protection unit cannot completely consume the remaining electrostatic discharge, the remaining electrostatic discharge flows into the second electrostatic protection branch 13 through the negative electrode of the fifth diode 413 and the negative electrode of the sixth diode 414 respectively, and the remaining electrostatic discharge is consumed by the second electrostatic protection branch 13.

[0059] In the present application, by setting a third switch device and a fourth switch device to control the drive circuit to work when and only when the third switch device is closed and the fourth switch device is closed, the application scenario of the electrostatic protection drive circuit is effectively improved and the user experience is improved.

[0060] Optionally, the second electrostatic protection branch is a second clamping circuit.

[0061] According to another aspect of an embodiment of the present invention, a data transmission device is also provided. The device may include the electrostatic protection driving circuit of the above embodiment. The specific implementation method and preferred application scenario are the same as those of the above embodiment and will not be described in detail here.

[0062] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0063] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0064] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0066] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0067] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0068] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0069] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An electrostatic protection driving circuit, characterized in that: include: a first electrostatic protection branch, wherein a first end of the first electrostatic protection branch is connected to a first output end of the driving circuit, a second end of the first electrostatic protection branch is connected to a second output end of the driving circuit, a third end of the first electrostatic protection branch is grounded, and the first electrostatic protection branch is used to eliminate electrostatic discharge returned from the output end of the driving circuit; an electrostatic protection unit, wherein a first end of the electrostatic protection unit is connected to a first input end of the driving circuit, a second end of the electrostatic protection unit is connected to a second input end of the driving circuit, a third end of the electrostatic protection unit is connected to a fourth end of the first electrostatic protection branch, a fourth end of the electrostatic protection unit is connected to a fifth end of the first electrostatic protection branch, a fifth end of the electrostatic protection unit and a sixth end of the electrostatic protection unit are grounded, and the electrostatic protection unit is used to eliminate the electrostatic discharge that is not consumed by the first electrostatic protection branch; A second electrostatic protection branch, wherein the first end of the second electrostatic protection branch is connected to the seventh end of the electrostatic protection unit, the second end of the second electrostatic protection branch is connected to the eighth end of the electrostatic protection unit, the third end of the second electrostatic protection branch is grounded, and the second electrostatic protection branch is used to eliminate the electrostatic discharge that has not been consumed by the electrostatic protection unit.

2. The electrostatic protection driving circuit according to claim 1, characterized in that: The first electrostatic protection branch comprises: a first inductor, wherein a first end of the first inductor is connected to a first output end of the driving circuit; a second inductor, wherein a first end of the second inductor is connected to a second end of the first inductor, and a second end of the second inductor is connected to a third end of the electrostatic protection unit; a third inductor, wherein a first end of the third inductor is connected to a second output end of the driving circuit; a fourth inductor, wherein a first end of the fourth inductor is connected to a second end of the third inductor, and a second end of the fourth inductor is connected to a fourth end of the electrostatic protection unit; a first clamping circuit, wherein a first end of the first clamping circuit is connected to a first end of the second inductor and a second end of the first inductor, a second end of the first clamping circuit is connected to a first end of the fourth inductor and a second end of the third inductor, and a third end of the first clamping circuit is grounded; The first inductor, the second inductor, the third inductor and the fourth inductor are used to absorb the parasitic capacitance generated by the first electrostatic protection branch.

3. The electrostatic protection driving circuit according to claim 2, characterized in that: The first electrostatic protection branch further includes: a first diode, wherein an anode of the first diode is connected to a first end of the second inductor and a second end of the first inductor, and a cathode of the first diode is connected to a first end of the first clamping circuit; a second diode, wherein an anode of the second diode is grounded, and a cathode of the second diode is connected to a first end of the second inductor and a second end of the first inductor; a third diode, wherein an anode of the third diode is connected to the first end of the fourth inductor and the second end of the third inductor, and a cathode of the third diode is connected to the second end of the first clamping circuit; A fourth diode, wherein an anode of the fourth diode is grounded, and a cathode of the fourth diode is connected to a first end of the fourth inductor and a second end of the third inductor.

4. The electrostatic protection driving circuit according to claim 1, characterized in that: The electrostatic protection unit comprises: a fifth inductor, wherein a first end of the fifth inductor is connected to a fifth end of the electrostatic protection unit, and a second end of the fifth inductor is connected to a third end of the electrostatic protection unit; a sixth inductor, wherein a first end of the sixth inductor is connected to a sixth end of the electrostatic protection unit, and a second end of the sixth inductor is connected to a fourth end of the electrostatic protection unit; a first resistor, wherein a first end of the first resistor is connected to a second end of the fifth inductor, and a second end of the first resistor is connected to a first end of the electrostatic protection unit; a second resistor, wherein a first end of the second resistor is connected to a second end of the sixth inductor, and a second end of the second resistor is connected to a second end of the electrostatic protection unit; a fifth diode, wherein an anode of the fifth diode is connected to the second end of the first resistor, and a cathode of the fifth diode is connected to the sixth end of the electrostatic protection unit; A sixth diode, wherein an anode of the sixth diode is connected to the second end of the second resistor, and a cathode of the sixth diode is connected to the seventh end of the electrostatic protection unit.

5. The electrostatic protection driving circuit according to claim 1, characterized in that: Also includes: a first switch device, wherein a first end of the first switch device is grounded, and a second end of the first switch device is connected to a fifth end of the electrostatic protection unit; a second switch device, wherein a first end of the second switch device is grounded, and a second end of the second switch device is connected to a sixth end of the electrostatic protection unit; a first controller, the first controller being connected to the third end of the first switch device and being used to control the on and off of the first switch device; A second controller is connected to the third end of the second switch device and is used to control the on and off of the second switch device.

6. The electrostatic protection driving circuit according to claim 5, characterized in that: Also includes: a third resistor, wherein a first end of the third resistor is connected to a second end of the first switch device, and a second end of the third resistor is connected to a fifth end of the electrostatic protection unit; A fourth resistor, wherein a first end of the fourth resistor is connected to a second end of the second switch device, and a second end of the fourth resistor is connected to a sixth end of the electrostatic protection unit.

7. The electrostatic protection driving circuit according to claim 6, characterized in that: The third resistor, the fourth resistor, the first switch device and the second switch device are impedance matched in pairs.

8. The electrostatic protection driving circuit according to claim 1, characterized in that: Also includes: a third switch device, wherein a first end of the third switch device is connected to the first input end of the drive circuit, a second end of the third switch device is connected to the first end of the electrostatic protection unit, and a third end of the third switch device is grounded; A fourth switch device, wherein a first end of the fourth switch device is connected to the second input end of the drive circuit, a second end of the fourth switch device is connected to the second end of the electrostatic protection unit, and a third end of the fourth switch device is grounded.

9. The electrostatic protection driving circuit according to claim 1, characterized in that: The second electrostatic protection branch is a second clamping circuit.

10. A data transmission device, characterized in that: include: An electrostatic protection driving circuit as claimed in any one of claims 1 to 9.

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