Driving circuit and storage device

Abstract

The present disclosure provides a driving circuit and a storage device wherein the driving circuit is coupled to an electrically programmable fuse, the driving circuit comprising: a voltage divider for dividing a programming voltage and generating a driving voltage; the switching device is respectively coupled with the voltage dividing device and the electric programmable fuse, has a starting threshold voltage and conducts a path between the driving circuit and the electric programmable fuse; wherein when the driving voltage is greater than the starting threshold voltage, under the driving of the programming voltage and the word line voltage, the switching device is gated so as to conduct a path between the driving circuit and the electrically programmable fuse. By adopting the technical scheme, the probability of misconduction of the electrically programmable fuse can be reduced, so that the working stability of the storage device is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of semiconductor technology, and particularly to a driving circuit and a storage device. Background Art

[0002] An eFuse (electrically programmable fuse) belongs to a one-time programmable (OTP) memory, which has advantages such as small occupied area, high compatibility, and fast response, and is widely used in various devices, such as mobile phones and mobile devices.

[0003] In an eFuse storage device, data reading and storage operations are achieved by controlling the current flowing through the eFuse. During actual operation, when the eFuse is not blown, the resistance of the eFuse is small, and when there is a leakage current flowing through the eFuse, the eFuse will be mis-conducted.

[0004] Therefore, how to provide a technical solution to improve the working stability of the storage device has become an urgent problem to be solved. Summary of the Utility Model

[0005] In view of this, the present disclosure provides a driving circuit and a storage device, which can reduce the probability of mis-conduction of the electrically programmable fuse, and thus improve the working stability of the storage device.

[0006] The present disclosure provides a driving circuit, coupled to an electrically programmable fuse, including:

[0007] A voltage divider device for dividing the programming voltage to generate a driving voltage;

[0008] A switching device, coupled to the voltage divider device and the electrically programmable fuse respectively, having an opening threshold voltage, and conducting the path between the driving circuit and the electrically programmable fuse; wherein, when the driving voltage is greater than the opening threshold voltage, under the drive of the programming voltage and the word line voltage, the switching device is selected to conduct the path between the driving circuit and the electrically programmable fuse.

[0009] Optionally, the voltage division ratio of the voltage divider device is adjustable, and the voltage division ratio is used to characterize the voltage division coefficient of the programming voltage.

[0010] Optionally, the voltage divider device includes at least one voltage division branch, and any one voltage division branch includes a first resistor and a second resistor coupled to each other, wherein the first end of the first resistor inputs the programming voltage, the second end of the first resistor is coupled to the first end of the second resistor and the switching device respectively; the second end of the second resistor is grounded.

[0011] Optionally, the at least one voltage-dividing branch is one voltage-dividing branch, and the voltage division ratio of the voltage-dividing device is determined according to the resistance values of the first resistor and the second resistor in the voltage-dividing branch.

[0012] Optionally, the at least one voltage-dividing branch is multiple voltage-dividing branches, and the voltage division ratios of the respective voltage-dividing branches are different. The voltage division ratio is determined according to the resistance values of the first resistor and the second resistor in each voltage-dividing branch.

[0013] Optionally, the voltage-dividing device further includes multiple gating branches. One gating branch corresponds to one voltage-dividing branch, and the gating branch is coupled between the corresponding balance-voltage-dividing branch and the programming voltage. When the gating branch is gated, the path between the corresponding voltage-dividing branch and the programming voltage is turned on. Among them, the voltage division ratio of the voltage-dividing branch in the on state is the current voltage division ratio of the voltage-dividing device.

[0014] Optionally, the resistance value of the first resistor is greater than the resistance value of the second resistor.

[0015] Optionally, the switching device includes: a first switching transistor and a second switching transistor, where:

[0016] The first end of the first switching transistor is coupled to the voltage-dividing device, the second end of the first switching transistor inputs the word line voltage, and the third end of the first switching transistor is coupled to the first end of the second switching transistor. Among them, the threshold voltage of the first switching transistor serves as the turn-on threshold voltage of the switching device.

[0017] The second end of the second switching transistor inputs the programming voltage, and the third end of the second switching transistor is coupled to the electrically programmable fuse.

[0018] Optionally, when the path between the driving circuit and the electrically programmable fuse is turned on, the current flowing through the second switching transistor is greater than the current flowing through the first switching transistor.

[0019] Correspondingly, the present disclosure further provides a storage device, including:

[0020] The driving circuit described in any of the foregoing examples;

[0021] An electrically programmable fuse coupled to the driving circuit. Among them, when the path between the driving circuit and the electrically programmable fuse is turned on, the electrically programmable fuse has a first resistance value; and when the path between the driving circuit and the electrically programmable fuse is not turned on, the electrically programmable fuse has a second resistance value smaller than the first resistance.

[0022] A controller coupled to the driving circuit and providing a word line voltage to the driving circuit.

[0023] Compared with the prior art, the technical solution of the embodiments of the present disclosure has the following advantages:

[0024] By using the driving circuit provided by the present disclosure, the voltage divider device can divide the programming voltage to generate a driving voltage. Since the switching device has an opening threshold voltage, the switching device can be selected and turned on only when the driving voltage is greater than the opening threshold voltage under the drive of the programming voltage and the word line voltage, thereby conducting the path between the driving circuit and the electrically programmable fuse. That is, by setting the voltage divider device, the instantaneous voltage value of the driving voltage output to the switching device can be reduced, so that the instantaneous voltage value of the driving voltage is less than the opening threshold voltage, thus avoiding the mis-turn-on of the switching device, reducing the probability of mis-turn-on of the electrically programmable fuse, and improving the working stability of the storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments of the present disclosure or the prior art. Obviously, the following described drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 is a schematic structural diagram of a driving circuit in an embodiment of the present disclosure;

[0027] Figure 2 is a schematic structural diagram of a voltage divider device in an embodiment of the present disclosure;

[0028] Figure 3 is a schematic structural diagram of another voltage divider device in an embodiment of the present disclosure;

[0029] Figure 4 is a schematic structural diagram of a switching device in an embodiment of the present disclosure;

[0030] Figure 5 is a schematic structural diagram of a storage device in an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] As shown in the background art, when there is a leakage current flowing through the eFuse, the eFuse will be mis-turn-on. After the inventor analyzed the reasons for the above phenomenon, it was found that:

[0032] In the existing eFuse storage device, there is a coupling capacitor between the branch where the programming voltage is located and the branch where the switching device is located. During the power-on process, the programming voltage can charge the switching device through the coupling capacitor. During this process, there is a phenomenon that the switching device is mis-turn-on due to charging the coupling capacitor, and then the eFuse is mis-turn-on, resulting in an open circuit state of the programming loop.

[0033] To solve the above technical problems, an embodiment of the present disclosure provides a driving circuit coupled to an electrically programmable fuse. The driving circuit includes: a voltage divider device that divides a programming voltage to generate a driving voltage; a switching device coupled to the voltage divider device and the electrically programmable fuse respectively, having an opening threshold voltage, and conducting a path between the driving circuit and the electrically programmable fuse; wherein, when the driving voltage is greater than the opening threshold voltage, under the driving of the programming voltage and the word line voltage, the switching device is selected to conduct the path between the driving circuit and the electrically programmable fuse.

[0034] Adopting the above solution, by setting the voltage divider device, the instantaneous voltage value of the driving voltage output to the switching device can be reduced, so that the instantaneous voltage value of the driving voltage is less than the opening threshold voltage. Therefore, mis-conduction of the switching device can be avoided, thereby reducing the probability of mis-conduction of the electrically programmable fuse and improving the working stability of the storage device.

[0035] To make the above objects, features, and advantages of the present disclosure more obvious and understandable, the following will exemplarily illustrate specific embodiments of the present disclosure with reference to the accompanying drawings.

[0036] The present disclosure provides a driving circuit, as Figure 1 shown in the structural schematic diagram of a driving circuit in the present disclosure, the driving circuit 100 can be coupled to the electrically programmable fuse 10A to provide current for the electrically programmable fuse 10A to blow the electrically programmable fuse 10A.

[0037] In some embodiments, when no current flows through the electrically programmable fuse 10A, the electrically programmable fuse 10A has a first resistance value; when current flows through the electrically programmable fuse 10A, the electrically programmable fuse 10A has a second resistance value smaller than the first resistance.

[0038] In some embodiments, as Figure 1 shown, the driving circuit 100 may include:

[0039] a voltage divider device 110 that divides the programming voltage VDD to generate a driving voltage V1;

[0040] a switching device 120 coupled to the voltage divider device 110 and the electrically programmable fuse 10A respectively, having an opening threshold voltage, and conducting a path between the driving circuit 100 and the electrically programmable fuse 10A.

[0041] In some embodiments, when the driving voltage V1 is greater than the opening threshold voltage, under the driving of the programming voltage VDD and the word line voltage V2, the switching device 120 is selected to conduct the path between the driving circuit 100 and the electrically programmable fuse 10A.

[0042] In some embodiments, by providing a voltage divider 110 between the switching device 120 and the programming voltage VDD, the instantaneous value of the driving voltage V1 output by the voltage divider 110 to the switching device 120 is small. For example, the driving voltage V1 is less than the turn-on threshold voltage of the switching device 120. Therefore, even if there is a coupling capacitance in the branch where the switching device 120 and the programming voltage VDD are located, the switching device 120 will not be turned on, thereby reducing the probability of mis-turn-on of the electrically programmable fuse 10A and improving the operating stability of the storage device.

[0043] In some embodiments, considering the amplitude fluctuation of the programming voltage (for example, the set amplitude of the programming voltage is 5V, and when the power-on operation is completed, the programming voltage is in a stable state with an amplitude of 4V), or the turn-on voltage thresholds corresponding to different switching devices are different. Therefore, when using a voltage divider to divide the programming voltage, the voltage division ratio of the voltage divider can be flexibly set according to actual needs to obtain driving voltages with different amplitudes.

[0044] As an implementation example, the voltage division ratio of the voltage divider in the embodiments of the present disclosure is adjustable, and the voltage division ratio is used to characterize the voltage division coefficient of the programming voltage.

[0045] That is, through the voltage division ratio of the voltage divider, the voltage division coefficient of the programming voltage can be controlled to obtain driving voltages with different amplitudes, so that the driving circuit can be applicable to different scenarios.

[0046] In some embodiments, voltage dividers with different structures and characteristics can be used to divide the programming voltage to generate corresponding driving voltages.

[0047] As an optional example, the voltage divider in the embodiments of the present disclosure may include at least one voltage division branch. Any voltage division branch includes a first resistor and a second resistor connected in series. Wherein, the first end of the first resistor inputs the programming voltage, the second end of the first resistor is respectively connected to the first end of the second resistor and the switching device; the second end of the second resistor is grounded.

[0048] Combined Figure 1 and Figure 2 Referring to the structural schematic diagram of a voltage divider shown in, the voltage divider 110 may include a first resistor R1 and a second resistor R2 connected in series. The first end of the first resistor R1 inputs the programming voltage VDD, the second end of the first resistor R1 is respectively connected to the first end of the second resistor R2 and the switching device 120; the second end of the second resistor R2 is grounded.

[0049] Through the first resistor R1 and the second resistor R2, the programming voltage VDD can be divided, and the generated driving voltage V1 is output to the switching device 120 through the second end of the first resistor R1.

[0050] In an alternative implementation, when the voltage divider device is a voltage dividing branch composed of a first resistor and a second resistor, the voltage division ratio of the voltage divider device is determined according to the resistance values of the first resistor and the second resistor in the voltage dividing branch.

[0051] That is, by adjusting the resistance value of the first resistor and / or the second resistor in the voltage dividing branch, the voltage division ratio of the voltage divider device can be changed, and thus a driving voltage with different voltage amplitudes can be generated.

[0052] Continuing to refer to Figure 2 , by changing the resistance value of the first resistor R1 and / or the second resistor R2, the voltage division ratio of the voltage dividing branch can be changed, and the resistance ratio between the first resistor R1 and the second resistor R2 can be used as the current voltage division ratio of the voltage divider device 110.

[0053] For example, referring to Figure 2 , the voltage division ratio of the voltage dividing branch can be R R2 / (R R1 +R R2 ).

[0054] In an alternative example, by changing parameters such as the length, thickness, and material of the first resistor and the second resistor, the resistance values of the first resistor and the second resistor can be changed.

[0055] In some embodiments of the present disclosure, the resistance value of the first resistor is greater than the resistance value of the second resistor, that is, the amplitude of the driving voltage generated by the voltage divider device is much smaller than the amplitude of the programming voltage.

[0056] In an alternative example, the resistance value of the first resistor can be 2000Ω, while the resistance value of the second resistor can be 500Ω. In this case, the voltage division ratio of the voltage divider device is 0.2.

[0057] It can be understood that the resistance values of the first resistor and the second resistor listed in the above examples are only for illustrative purposes and are used to indicate that the resistance value of the first resistor is much greater than the resistance value of the second resistor, and should not be construed as a limitation to the present utility model. For example, in some other examples, the resistance value of the first resistor can be 3000Ω, and the resistance value of the second resistor can be 300Ω.

[0058] As can be seen from the foregoing, the resistance values of the first resistor and the second resistor in each voltage dividing branch can determine the voltage division ratio of the voltage divider device. Therefore, in some embodiments of the present disclosure, the resistance values of the first resistor and the second resistor can be adjusted so that each voltage dividing branch has a different voltage division ratio, and then a voltage dividing branch with a different voltage division ratio can be selected as the voltage divider device to be connected to the driving power supply.

[0059] As an implementation example, at least one of the voltage dividing branches in the embodiments of the present disclosure is a plurality of voltage dividing branches, and the voltage division ratios of the respective voltage dividing branches can be different.

[0060] As shown in Figure 3 FIG. [0000139], a schematic structural diagram of another voltage divider device in the embodiments of the present disclosure, where at least one voltage dividing branch is a plurality of voltage dividing branches, such as voltage dividing branches B11 to B1n. Among them, the voltage division ratios of voltage dividing branches B11 to B1n are all different.

[0061] For example, the voltage division ratios of voltage dividing branches B11 to B1n are k1, k2, …, kn respectively, and k1, k2, …, kn are all different, where n is an integer greater than 1. The specific structure of each voltage dividing branch can be referred to Figure 2 and its corresponding description content.

[0062] It should be noted that the embodiments of the present disclosure do not limit the specific values of the voltage division ratios of the voltage dividing branches, as long as the voltage division ratios of the plurality of voltage dividing branches are different.

[0063] In some embodiments, the voltage division ratio can be determined by the resistance values of the first resistor and the second resistor in one of the voltage dividing branches. Therefore, by selecting first resistors and second resistors with different resistance values, each voltage dividing branch can have a different voltage division ratio. Furthermore, by selecting different voltage dividing branches, the voltage divider device can have different voltage division ratios without adjusting the parameters of the voltage dividing branches.

[0064] In specific implementation, a plurality of voltage dividing branches can be arranged on a substrate, and by using different voltage dividing branches, drive voltages with different amplitudes can be generated.

[0065] In some embodiments of the present disclosure, the voltage divider device with different voltage division ratios can be connected between the programming voltage and the switching device in multiple ways.

[0066] As an optional example, the voltage divider device in the embodiments of the present disclosure may further include a plurality of selection branches. One selection branch corresponds to one voltage dividing branch, and the selection branch is coupled between the corresponding voltage dividing branch and the programming voltage. When the selection branch is selected, the path between the corresponding voltage dividing branch and the programming voltage is conducted. Among them, the voltage division ratio of the voltage dividing branch in the conducting state is the current voltage division ratio of the voltage divider device.

[0067] Continuing to refer to Figure 3 , the voltage divider device may further include n selection branches corresponding to n voltage dividing branches, such as selection branches XT1 to XTn. Among them, selection branch XT1 is coupled between voltage dividing branch B11 and programming voltage VDD, selection branch XT2 is coupled between voltage dividing branch B12 and programming voltage VDD, ……, selection branch XTn is coupled between voltage dividing branch B1n and programming voltage VDD.

[0068] When any one of the selected branches XT1 to XTn is selected, the path between the voltage dividing branch corresponding to the selected selected branch and the programming voltage VDD is turned on. For example, when the selected branch XT1 is selected, the path between the voltage dividing branch B11 and the programming voltage VDD is turned on. At this time, the voltage dividing ratio k1 of the voltage dividing branch B11 can be used as the current voltage dividing ratio of the voltage dividing device. Furthermore, the programming voltage VDD can be divided, and the generated driving voltage VDD*k1 is output to the switching device 120.

[0069] In some embodiments, the voltage dividing ratios of the respective voltage dividing branches can be preconfigured. Furthermore, according to actual requirements and different scenarios, by selecting the corresponding selected branch, the programming voltage can be divided to a corresponding degree. For example, in the case where the amplitude of the programming voltage is relatively large, a voltage dividing branch with a relatively small voltage dividing ratio can be selected to reduce the amplitude of the driving voltage and avoid burning out the switching device.

[0070] In some embodiments, any one of the selected branches can be selected in a variety of ways. For example, it can be automatically selected according to a determination condition, manually selected by a human, or by using an auxiliary device electrically connected to the selected branch. The auxiliary device can respond to an input selection signal to select any one of the selected branches.

[0071] Thus, by using the voltage dividing device in the above example, a driving voltage with a corresponding amplitude can be generated. Furthermore, when the driving voltage is greater than the turn-on threshold voltage of the switching device, the switching device is turned on.

[0072] See Figure 4 the schematic structural diagram of a switching device in the embodiment of the present disclosure shown in Figure 4 As shown, the switching device 120 includes: a first switching transistor T1 and a second switching transistor T2, where:

[0073] The first end of the first switching transistor T1 is coupled to the voltage dividing device 110. The second end of the first switching transistor T1 inputs the word line voltage V2. The third end of the first switching transistor T1 is coupled to the first end of the second switching transistor T2. Among them, the threshold voltage of the second switching transistor T2 is used as the turn-on threshold voltage of the switching device 120;

[0074] The second end of the second switching transistor T2 inputs the programming voltage VDD. The third end of the second switching transistor T2 is coupled to the electrically programmable fuse 10A.

[0075] Specifically, when the amplitude of the driving voltage V1 generated by the voltage divider 110 is greater than the threshold voltage of the first switching transistor T1, under the action of the word line voltage V2, the first switching transistor T1 conducts, and then the path between the programming voltage VDD and the second switching transistor T2 is selected and the second switching transistor T2 conducts. As a result, a current can be generated in the electrically programmable fuse 10A, and the electrically programmable fuse 10A can be blown to realize the read and write operations of data.

[0076] Furthermore, the electrically programmable fuse 10A is located between the second switching transistor T2 and the ground. When the second switching transistor T2 is not conducting, no current flows through the electrically programmable fuse 10A, and the voltage across the electrically programmable fuse 10A is constantly a low voltage, and the electrically programmable fuse 10A will not be mis-conducted.

[0077] Moreover, due to the existence of the voltage divider 110, even if there is a coupling capacitor between the branch where the programming voltage VDD is located and the branch where the switching device 120 is located, in the presence of a coupling voltage, the amplitude of the driving voltage V1 generated by the voltage divider 110 through voltage division is much smaller than the threshold voltage of the first switching transistor T1, and the first switching transistor T1 remains in the off state. Consequently, the second switching transistor T2 will not be mis-conducted, no current flows through the electrically programmable fuse 10A, and the resistance value of the electrically programmable fuse 10A is small. For example, the resistance value of the electrically programmable fuse 10A is around 100 Ω.

[0078] When the drive circuit is operating normally, as the power-on process progresses, the amplitude of the programming voltage VDD gradually increases, and the driving voltage V1 generated by the voltage divider 110 gradually increases. At a certain moment, the amplitude of the driving voltage V1 is greater than the threshold voltage of the first switching transistor T1, and the first switching transistor T1 turns on. At this time, the voltage at the input end of the second switching transistor T2 increases to the voltage provided by the programming voltage VDD, causing the second switching transistor T2 to turn on. Since the voltage at the input end of the second switching transistor T2 is relatively large, the current flowing through the electrically programmable fuse 10A increases rapidly, and the electrically programmable fuse 10A is in the blown state.

[0079] Since the larger the voltage at the input end of the second switching transistor T2, the larger the current flowing through the second switching transistor T2, the larger the fusing current flowing through the electrically programmable fuse 10A. Therefore, the electrically programmable fuse 10A is in a fully blown state, and the resistance value of the electrically programmable fuse 10A in the fully blown state is very large, for example, close to infinity.

[0080] In this case, when the path between the drive circuit 100 and the electrically programmable fuse 10A is conducting, the current flowing through the second switching transistor T2 is greater than the current flowing through the first switching transistor T1.

[0081] In some examples of the present disclosure, then refer to Figure 4, the first switching transistor T1 may include a first NMOS transistor, where the gate of the first NMOS transistor serves as the first end of the first switching transistor T1, the drain of the first NMOS transistor serves as the second end of the first switching transistor T1, and the source of the first NMOS transistor serves as the third end of the first switching transistor T1.

[0082] The second switching transistor T2 may include a second NMOS transistor, where the gate of the second NMOS transistor serves as the first end of the second switching transistor T2, the drain of the second NMOS transistor serves as the second end of the second switching transistor T2, and the source of the second NMOS transistor serves as the third end of the second switching transistor T2.

[0083] It can be understood that the types of the first switching transistor and the second switching transistor described in the above examples are only for illustrative purposes, and are used to indicate that different switching devices can be adopted to realize the path between the conduction driving circuit and the electrically programmable fuse, and should not be construed as a limitation to the present invention. For example, the first switching transistor and the second switching transistor can also be a transistor BJT or a power transistor IGBT.

[0084] It should be noted that the above describes multiple embodiment solutions provided by the present disclosure. The optional methods described in each embodiment solution can be combined and cross-referenced with each other without conflict, so as to extend multiple possible embodiment solutions, and all of these can be regarded as the embodiment solutions disclosed and made public by the present disclosure.

[0085] In a specific implementation, the above driving circuit can be applied to various memories and corresponding devices. The following gives an application example in a storage device.

[0086] See Figure 5 the structural schematic diagram of a storage device in the embodiment of the present disclosure shown in Figure 5 As shown, the storage device 200 may include:

[0087] A driving circuit 100. The specific structure and working principle of the driving circuit 100 can be referred to the foregoing examples and will not be elaborated here;

[0088] An electrically programmable fuse 10A coupled to the driving circuit 100; wherein, when the path between the driving circuit 100 and the electrically programmable fuse 10A is conducted, the electrically programmable fuse 10A has a first resistance value; and when the path between the driving circuit 100 and the electrically programmable fuse 10A is not conducted, the electrically programmable fuse 10A has a second resistance value smaller than the first resistance;

[0089] A controller 300 coupled to the driving circuit 100 and providing a word line voltage to the driving circuit 100.

[0090] In some embodiments, the controller 300 may be implemented by a processing chip such as a Central Processing Unit (CPU) or a Field Programmable Gate Array (FPGA), or may be implemented by an Application Specific Integrated Circuit (ASIC) or one or more integrated circuits configured to implement the embodiments of the present disclosure.

[0091] In some embodiments, the material of the electrically programmable fuse 10A is a polysilicon material.

[0092] It should be noted that the "one embodiment" or "embodiment" referred to in the present disclosure means a specific feature, structure or characteristic that may be included in at least one implementation manner of the present disclosure. And in the description of the present disclosure, terms such as "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with terms such as "first" and "second" may explicitly or implicitly include one or more of such features. Moreover, terms such as "first" and "second" are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or indicate importance. It can be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described.

[0093] Although the embodiments of the present disclosure are disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope defined by the claims.

Claims

1. A driving circuit is coupled to an electrically programmable fuse, characterized in that, The driving circuit includes: A voltage divider device that divides the programming voltage to generate a driving voltage; A switching device that is respectively coupled to the voltage divider device and the electrically programmable fuse, has an opening threshold voltage, and conducts the path between the driving circuit and the electrically programmable fuse; wherein, when the driving voltage is greater than the opening threshold voltage, under the drive of the programming voltage and the word line voltage, the switching device is selected to conduct the path between the driving circuit and the electrically programmable fuse.

2. The drive circuit according to claim 1, wherein The voltage division ratio of the voltage divider device is adjustable, and the voltage division ratio is used to characterize the voltage division coefficient of the programming voltage.

3. The drive circuit according to claim 2, wherein, The voltage divider device includes at least one voltage division branch, and any one voltage division branch includes a first resistor and a second resistor that are coupled to each other. Wherein, the first end of the first resistor inputs the programming voltage, the second end of the first resistor is respectively coupled to the first end of the second resistor and the switching device; the second end of the second resistor is grounded.

4. The drive circuit according to claim 3, wherein The at least one voltage division branch is one voltage division branch, and the voltage division ratio of the voltage divider device is determined according to the resistance values of the first resistor and the second resistor in the voltage division branch.

5. The drive circuit according to claim 3, wherein The at least one voltage division branch is multiple voltage division branches, and the voltage division ratios of each voltage division branch are different, and the voltage division ratio is determined by the resistance values of the first resistor and the second resistor in each voltage division branch.

6. The drive circuit according to claim 5, characterized in that, The voltage divider device further includes multiple selection branches, one selection branch corresponds to one voltage division branch, and the selection branch is coupled between the corresponding voltage division branch and the programming voltage; when the selection branch is selected, it conducts the path between the corresponding voltage division branch and the programming voltage; wherein, the voltage division ratio of the voltage division branch in the conduction state is the current voltage division ratio of the voltage divider device.

7. The drive circuit according to any one of claims 3 to 6, characterized in that, The resistance value of the first resistor is greater than the resistance value of the second resistor.

8. The drive circuit according to claim 1, characterized in that, The switching device includes: a first switching tube and a second switching tube, wherein: The first end of the first switching tube is coupled to the voltage divider device, the second end of the first switching tube inputs the word line voltage, and the third end of the first switching tube is coupled to the first end of the second switching tube; wherein, the threshold voltage of the first switching tube is used as the opening threshold voltage of the switching device; The second end of the second switching tube inputs the programming voltage, and the third end of the second switching tube is coupled to the electrically programmable fuse.

9. The drive circuit according to claim 8, wherein When the path between the driving circuit and the electrically programmable fuse is conducted, the current flowing through the second switching tube is greater than the current flowing through the first switching tube.

10. A storage device, characterized in that, Includes: The driving circuit according to any one of claims 1 to 9; An electrically programmable fuse coupled to the driving circuit; wherein, when the path between the driving circuit and the electrically programmable fuse is conducted, the electrically programmable fuse has a first resistance value; and when the path between the driving circuit and the electrically programmable fuse is not conducted, the electrically programmable fuse has a second resistance value smaller than the first resistance; A controller coupled to the driving circuit and providing a word line voltage to the driving circuit.

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