Electrostatic discharge protection mechanism for linear voltage regulator chip

Abstract

The utility model discloses an electrostatic discharge protection mechanism used for a linear voltage regulator chip, comprising a chip main body which is a body part of the linear voltage regulator chip, the chip main body is arranged at the upper end of a protection substrate bottom plate, and the protection substrate bottom plate is arranged to be a square gasket structure and is used for integrally installing the chip main body and isolating the chip main body from external current; strip-shaped sliding rails are symmetrically arranged on the two sides of the protection substrate bottom plate, and metal sliding ways are arranged in the strip-shaped sliding rails of the protection substrate bottom plate. According to the electrostatic discharge protection mechanism for the linear voltage regulator chip, the protection substrate bottom plate is cut and adjusted according to the size and position of the linear voltage regulator chip main body, so that the overall structure of the metal net power transmission switching end, the grounding discharge end and the ESD resistor mounting position is compact; the external static electricity part received by the linear voltage regulator chip main body in the working process is transmitted to the electrostatic protection assembly for discharge elimination processing, and the occupied area of the chip is reduced while the protection effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated circuits, and particularly relates to an electrostatic discharge protection mechanism for a linear voltage regulator chip. Background Technique

[0002] Linear voltage regulator chips play a crucial role in electronic devices. They can convert unstable input voltages into stable output voltages, providing reliable power supplies for various electronic components. They are mainly widely used in many electronic devices such as smart phones, computers, communication devices, and medical instruments. Linear voltage regulator chips provide stable voltages for components such as processors, memories, and displays to ensure their normal operation. Any voltage fluctuations may affect the performance and stability of the devices. The common electrostatic discharge during the operation of electronic devices is extremely harmful to linear voltage regulator chips.

[0003] The instantaneous high voltage and large current generated by electrostatic discharge can directly damage the circuit components inside the chip, resulting in the failure of the chip's functions and shortening the service life of the chip. Existing protection measures increase the overall area of the chip by adding complex protection circuits, affecting its normal installation and use. Moreover, the protection ability of increasing pin capacitance to affect signal transmission speed or increasing power consumption is limited, and the chip cannot be effectively protected in the case of strong electrostatic discharge events. Content of the Utility Model

[0004] The purpose of the utility model is to provide an electrostatic discharge protection mechanism for a linear voltage regulator chip, so as to solve the problems raised in the above background technique that existing protection measures increase the overall area of the chip by adding complex protection circuits, affecting its normal installation and use, and the protection ability of increasing pin capacitance to affect signal transmission speed or increasing power consumption is limited, and the chip cannot be effectively protected in the case of strong electrostatic discharge events.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An electrostatic discharge protection mechanism for a linear voltage regulator chip, including a chip body, which is the main body part of the linear voltage regulator chip. The chip body is installed on the upper end of a protection substrate bottom plate, and the protection substrate bottom plate is set as a square gasket structure to isolate the overall installation of the chip body from external current;

[0006] Strip-shaped slide rails are symmetrically arranged on both sides of the protection substrate bottom plate, and metal slideways are arranged in the strip-shaped slide rails of the protection substrate bottom plate. A contact slider is slidably connected in the strip-shaped slide rails of the protection substrate bottom plate, and the contact slider is in contact with the metal slideway. An insulating protection plate is arranged on one side of the contact slider, and a metal mesh power transmission transfer end is installed inside the insulating protection plate;

[0007] The adapter is installed inside the protective substrate bottom plate. The chip body is connected to the adapter, and an electrostatic protection component is arranged at the upper end of the adapter to weaken and eliminate the received static electricity and avoid affecting the chip body.

[0008] Adopting the above technical solution can effectively cope with electrostatic discharge events of various intensities and avoid the influence of static electricity on the linear voltage regulator chip.

[0009] Preferably, the metal slideway is in contact with the side wall of the adapter, and a connecting wire penetrating the protective substrate bottom plate is arranged inside the adapter.

[0010] Adopting the above technical solution makes a static current flow direction formed between the metal slideway and the adapter, facilitating the transfer of static electricity.

[0011] Preferably, a sealing gasket is arranged inside the connecting port of the connecting wire at the upper end of the metal mesh power transmission adapter end, a conducting wire connected to the contact slider is arranged on the metal mesh power transmission adapter end, and a grounding discharge end is arranged at the bottom end of the metal mesh power transmission adapter end.

[0012] Adopting the above technical solution increases the static electricity discharge transfer direction through the connection of the contact slider of the metal mesh power transmission adapter end.

[0013] Preferably, the grounding discharge end penetrates the bottom end of the insulating protection plate, and an insulating paint is coated on the surface of the grounding discharge end.

[0014] Adopting the above technical solution enables the grounding discharge end to quickly and directly conduct the externally introduced static electricity to the surrounding area.

[0015] Preferably, the electrostatic protection component includes:

[0016] An insulating bracket installed on the upper end face of the protective substrate bottom plate;

[0017] An ESD resistor installed inside the insulating bracket, and one end of the ESD resistor that is energized is connected to the connecting wire of the adapter;

[0018] An external plug symmetrically installed on the upper side wall surface of the insulating bracket;

[0019] A shape memory metal spring column, the bottom layer of which is arranged on the surface of the port of the external plug;

[0020] A limiting ring connected to the other end of the shape memory metal spring column, and the limiting ring is coaxially arranged with the external plug;

[0021] An insulating sleeve installed inside the limiting ring, and the insulating sleeve is arranged in a beveled petal shape.

[0022] Adopting the above technical solution, the electrostatic protection component achieves good electrostatic protection and minimizes the negative impact on the chip performance.

[0023] Preferably, the bottom end of the insulating holder is inserted by the adapter, and the insulating holder is arranged in a U-shaped structure.

[0024] By adopting the above technical solution, the insulating holder provides guiding installation for the adapter cable, avoiding the static electricity received by the adapter from discharging to the surrounding.

[0025] Preferably, the other energized end of the ESD resistor is connected to an external plug.

[0026] By adopting the above technical solution, the ESD resistor is connected in series with the external plug, facilitating the connection and discharge treatment of static electricity and the grounding cable.

[0027] Compared with the prior art, the beneficial effects of the present utility model are as follows: The electrostatic discharge protection mechanism for the linear voltage regulator chip:

[0028] 1. Through the protection substrate bottom plate being cut and adjusted according to the size and position of the linear voltage regulator chip body, the overall structure of the power transmission adapter end, grounding discharge end and the installation position of the ESD resistor of the metal mesh is compact, enabling part of the external static electricity received by the linear voltage regulator chip body during operation to be transmitted to the electrostatic protection component for discharge and elimination treatment. While improving the protection effect, it reduces the occupation of the chip area, lowers the manufacturing cost, makes the overall structure of the device suitable for the production of large-scale integrated circuits, and meets the requirements of modern electronic devices for chip miniaturization and low cost;

[0029] 2. The external plug added to the side wall surface of the insulating holder enables the external plug at the discharge port of the ESD resistor to increase the discharge path. When the ESD resistor receives excessive high-voltage static electricity for working treatment, the heat generated during its operation affects the shape of the shape memory alloy spring column. Through the deformation of the shape memory alloy spring column, the additional grounding cable restricted by the limit ring and the insulating sleeve is pulled to be inserted into the added external plug, increasing the static electricity discharge path, amplifying the charge discharge path, improving the overall static electricity discharge ability of the device, and at the same time reducing the risk of chip damage due to static electricity discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic external three-dimensional structure diagram of the whole of the present utility model;

[0031] Figure 2 is a schematic three-dimensional installation structure diagram of the protection substrate bottom plate and the insulating holder of the present utility model;

[0032] Figure 3 is a schematic internal side-sectional three-dimensional structure diagram of the whole of the present utility model;

[0033] Figure 4 is a schematic three-dimensional installation structure diagram of the adapter and the insulating holder of the present utility model;

[0034] Figure 5 This is a three-dimensional structural schematic diagram of the installation of the insulating protection plate and the metal mesh power transmission adapter end of the present utility model;

[0035] Figure 6 This is a three-dimensional structural schematic diagram of the installation of the insulating bracket and the external plug of the present utility model.

[0036] In the figure: 1. Chip body; 2. Protective substrate bottom plate; 3. Metal slideway; 4. Contact slider; 5. Insulating protection plate; 6. Metal mesh power transmission adapter end; 7. Ground discharge end; 8. Sealing gasket; 9. Adapter; 10. Insulating bracket; 11. ESD resistor; 12. External plug; 13. Memory metal spring column; 14. Limit ring; 15. Insulating sleeve. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0038] Please refer to Figures 1-6 , the present utility model provides a technical solution: an electrostatic discharge protection mechanism for a linear voltage regulator chip, including a chip body 1, a protective substrate bottom plate 2, a metal slideway 3, a contact slider 4, an insulating protection plate 5, a metal mesh power transmission adapter end 6, a ground discharge end 7, a sealing gasket 8, an adapter 9, an insulating bracket 10, an ESD resistor 11, an external plug 12, a memory metal spring column 13, a limit ring 14, and an insulating sleeve 15;

[0039] Among them, the chip body 1, which is the main body part of the linear voltage regulator chip, the chip body 1 is installed on the upper end of the protective substrate bottom plate 2, and the protective substrate bottom plate 2 is set as a square gasket structure to isolate the overall installation of the chip body 1 from the external current;

[0040] On both sides of the protective substrate bottom plate 2, strip-shaped slide rails are symmetrically arranged, and a metal slideway 3 is arranged in the strip-shaped slide rails of the protective substrate bottom plate 2. A contact slider 4 is slidably connected in the strip-shaped slide rails of the protective substrate bottom plate 2, and the contact slider 4 is in contact with the metal slideway 3. An insulating protection plate 5 is arranged on one side of the contact slider 4, and a metal mesh power transmission adapter 6 is installed inside the insulating protection plate 5. The metal slideway 3 is in contact with the side wall of the adapter 9, and a connecting wire passing through the protective substrate bottom plate 2 is arranged inside the adapter 9. A sealing gasket 8 is arranged in the connection port of the connecting wire at the upper end of the metal mesh power transmission adapter 6, and the metal mesh power transmission adapter 6 is provided with a connecting wire connected to the contact slider 4. And a grounding discharge terminal 7 is arranged at the bottom end of the metal mesh power transmission adapter 6. The grounding discharge terminal 7 penetrates through the bottom end of the insulating protection plate 5, and an insulating paint is coated on the surface of the grounding discharge terminal 7;

[0041] The adapter 9 is installed inside the protective substrate bottom plate 2. The chip body 1 is connected to the adapter 9, and an electrostatic protection component is arranged at the upper end of the adapter 9 for weakening and eliminating the received static electricity to avoid affecting the chip body 1;

[0042] Combined with the Figures 1-6 shown in the attached drawings of the specification, when in use, the protective substrate bottom plate 2 supports the bottom end of the chip body 1 and provides a positioning space for the metal mesh covering the outer layer of the chip body 1. Among them, the position where the inner layer of the metal mesh contacts the chip body 1 is provided with an insulating coating. The shape of the protective substrate bottom plate 2 is modified according to the installation area requirements of the chip body 1. The metal slideways 3 on both sides of the protective substrate bottom plate 2 are directly connected to the contact sliders 4 to transfer and transport static electricity to the adapter 9. The metal mesh power transmission adapter 6 arranged inside the insulating protection plate 5 is provided with two power transmission ports. The grounding discharge terminal 7 at the bottom end is directly connected to the grounding cable. When the installation position of the equipment is limited, the grounding discharge terminal 7 is removed and maintained. The static electricity is sent into the electrostatic protection component connected to the adapter 9 from the cable connecting the metal mesh power transmission adapter 6 and the contact slider 4 for static electricity discharge operation. The sealing gasket 8 arranged inside the grounding discharge terminal 7 provides a docking port for the cable connecting the metal mesh. Utilizing the conductivity of the metal, the transfer of static electricity is realized, so as to lead out static electricity to the surrounding area and provide protection for the linear voltage regulator chip;

[0043] The electrostatic protection component includes:

[0044] An insulating bracket 10 is installed on the upper end surface of the protective substrate bottom plate 2. The bottom end of the insulating bracket 10 is inserted by the adapter 9, and the insulating bracket 10 is arranged in a U-shaped structure;

[0045] An ESD resistor 11 is installed inside the insulating bracket 10. One end of the ESD resistor 11 that is energized is connected to the connecting wire of the adapter 9, and the other end of the ESD resistor 11 that is energized is connected to the external plug 12;

[0046] An external plug 12, symmetrically installed on the upper side wall surface of the insulating bracket 10;

[0047] A shape memory alloy spring post 13, its bottom layer is set on the surface of the port of the external plug 12;

[0048] A limiting ring 14, connected to the other end of the shape memory alloy spring post 13, and the limiting ring 14 is coaxially arranged with the external plug 12;

[0049] An insulating sleeve 15, installed inside the limiting ring 14, and the insulating sleeve 15 is arranged in a beveled petal shape;

[0050] Combined with the attached drawings of the specification Figures 1-6 As shown, the insulating bracket 10 provided at the top end of the protective substrate bottom plate 2 provides an installation position for the ESD resistor 11, avoiding excessive leakage of static electricity during the discharge process and affecting the operation of the chip body 1. The adapter 9 connected to both ends of the ESD resistor 11 is used to access the collected static electricity. The external plug 12 provides static electricity grounding and discharging work for the inserted external cable, avoiding excessive accumulation of static electricity in the ESD resistor 11 part and accelerating the loss of the ESD resistor 11. During use, part of the external plug 12 is docked with the grounding cable for discharging work. When a large amount of static electricity needs to be discharged, the shape memory alloy spring inside the shape memory alloy spring post 13 provided at the port of the external plug 12 is affected by the heat generated by the operation of the ESD resistor 11 and deforms and contracts, causing the limiting ring 14 connected to one end of the shape memory alloy spring post 13 to quickly reset. At this time, the insulating sleeve 15 clamped and connected to the external cable restricts the movement position of the cable through the beveled petal structure, enabling the external grounding cable to be docked with the corresponding idle external plug 12, increasing the static electricity discharge port, and avoiding excessive damage to the internal components of the chip body 1 caused by static electricity.

[0051] Working principle: When using the electrostatic discharge protection mechanism for the linear voltage regulator chip, the protective substrate bottom plate 2 protects the installation position of the chip body 1. The grounding discharge end 7 on the upper end of the metal mesh power transmission adapter 6 is installed with a metal mesh in contact with the outer layer of the chip body 1. The metal mesh collects external static electricity and guides it to the grounding wire connected to the grounding discharge end 7, or uses the connection guidance of the metal slideway 3, the contact slider 4, and the adapter 9. The high-voltage static electricity is conducted to the ESD resistor 11 through the cable of the adapter 9, enabling the ESD resistor 11 to consume electrical energy during the electrostatic discharge process to achieve the effect of quickly weakening static electricity. When the ESD resistor 11 is in a high-temperature state due to electrostatic discharge, the shape memory alloy spring post 13 at the port of the external plug 12 shrinks under the influence of heat, causing the cable connected to the external limiting ring 14 and the insulating sleeve 15 to be inserted into the external plug 12 and sent out to the external grounding cable, avoiding the high-temperature heat generated by the ESD resistor 11 from affecting the operation of the chip body 1 and increasing the overall practicality.

[0052] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An electrostatic discharge protection mechanism for a linear voltage regulator chip, comprising: A chip body (1), which is the main body part of the linear voltage regulator chip. The chip body (1) is installed at the upper end of a protective substrate bottom plate (2), and the protective substrate bottom plate (2) is arranged in a square gasket structure to isolate the overall installation of the chip body (1) from external current. It is characterized in that: strip-shaped slide rails are symmetrically arranged on both sides of the protective substrate bottom plate (2), and a metal slideway (3) is arranged in the strip-shaped slide rails of the protective substrate bottom plate (2). A contact slider (4) is slidably connected in the strip-shaped slide rails of the protective substrate bottom plate (2), and the contact slider (4) is in contact with the metal slideway (3). An insulating protection plate (5) is arranged on one side of the contact slider (4), and a metal mesh power transmission adapter (6) is installed inside the insulating protection plate (5). An adapter (9), which is installed inside the protective substrate bottom plate (2). The chip body (1) is connected to the adapter (9), and an electrostatic protection component is arranged at the upper end of the adapter (9) to weaken and eliminate the received static electricity and avoid affecting the chip body (1).

2. The electrostatic discharge protection mechanism for a linear voltage regulator chip according to claim 1, characterized in that: The metal slideway (3) is in contact with the side wall of the adapter (9), and a connecting wire penetrating the protective substrate bottom plate (2) is arranged inside the adapter (9).

3. An electrostatic discharge protection mechanism for a linear voltage regulator chip according to claim 1, characterized in that: A sealing gasket (8) is arranged in the connection port of the connecting wire at the upper end of the metal mesh power transmission adapter (6). The metal mesh power transmission adapter (6) is provided with a connecting wire connected to the contact slider (4), and a grounding discharge end (7) is arranged at the bottom end of the metal mesh power transmission adapter (6).

4. An electrostatic discharge protection mechanism for a linear voltage regulator chip according to claim 3, characterized in that: The grounding discharge end (7) penetrates the bottom end of the insulating protection plate (5), and the surface of the grounding discharge end (7) is coated with insulating paint.

5. The electrostatic discharge protection mechanism for a linear voltage regulator chip according to claim 1, characterized in that: The electrostatic protection component includes: An insulating bracket (10), which is installed on the upper end surface of the protective substrate bottom plate (2); An ESD resistor (11), which is installed inside the insulating bracket (10), and one end of the ESD resistor (11) that is energized is connected to the connecting wire of the adapter (9); External plugs (12), which are symmetrically installed on the upper side wall surface of the insulating bracket (10); Memory metal spring columns (13), the bottom layer of which is arranged on the surface of the port of the external plug (12); A limiting ring (14), which is connected to the other end of the memory metal spring column (13), and the limiting ring (14) is coaxially arranged with the external plug (12); An insulating sleeve (15), which is installed inside the limiting ring (14), and the insulating sleeve (15) is arranged in a beveled petal shape.

6. The electrostatic discharge protection mechanism for a linear voltage regulator chip according to claim 5, wherein: The bottom end of the insulating bracket (10) is inserted by the adapter (9), and the insulating bracket (10) is arranged in a U-shaped structure.

7. An electrostatic discharge protection mechanism for a linear voltage regulator chip according to claim 5, characterized in that: The other end of the ESD resistor (11) that is energized is connected to the external plug (12).

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