A zero voltage switching control device for GaN devices

Abstract

The utility model relates to the technical field of semiconductor device especially is a kind of GaN device zero-voltage switch control device, including zero-voltage switch control circuit board and GaN chip main part, zero-voltage switch control circuit board upper end fixed mounting has GaN chip main part, zero-voltage switch control circuit board inside plug-in installation has wiring terminal, wiring terminal includes compression type wiring terminal shell, compression type wiring terminal shell bottom end is fixedly connected with pin, compression type wiring terminal shell inside spiral connection has screwing pressure subassembly, compression type wiring terminal shell inside installation has moving assembly, compression type wiring terminal shell inside fixedly connected with guide tube, compression type wiring terminal shell inside slidingly connected with moving plate, in the utility model, device has realized to the three-dimensional wrapping formula fixing of wire, anti-skid groove on pressure disc and anti-rotation groove on pressure block can effectively suppress the radial displacement and radial rotation of wire under high-frequency vibration environment, prevent wire from sliding from wiring terminal.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor device technology, specifically to a zero-voltage switching control device for GaN devices. Background Technology

[0002] GaN devices, or gallium nitride devices, are electronic devices made of a wide-bandgap semiconductor material. Compared to traditional silicon devices, GaN devices have a higher breakdown electric field, which means they can withstand higher voltages and have a significant advantage in high-power applications. At the same time, GaN devices have high electron mobility, which enables them to perform well in high-frequency applications, such as radio frequency communications, where they can achieve higher data transmission rates.

[0003] Zero-voltage switching of GaN devices is a soft-switching technology. At the instant the GaN device is turned on, the control circuit reduces the voltage across the device to zero. When the device is turned on again, theoretically, switching losses can be reduced to zero, while reducing electromagnetic interference and improving the efficiency and reliability of the power supply system.

[0004] GaN device zero-voltage switching control devices typically connect to wires via screw-pressed terminals. However, since the outer edge of the wire has an arc-shaped cross-section, point contact is easily formed when pressing a rigid plane. This makes it difficult to press the wires firmly, and even after tightening the screws, the wires are prone to slippage. Therefore, a GaN device zero-voltage switching control device is proposed to address these issues. Summary of the Invention

[0005] The purpose of this invention is to provide a zero-voltage switching control device for GaN devices to solve the problem that due to their extremely high switching speed, severe electromagnetic vibrations are generated inside the device. There is no good buffer between the device and the packaging structure. This electromagnetic vibration will cause fatigue damage to the packaging material, leading to cracks in the packaging material, which in turn affects the heat dissipation performance and electrical connection reliability of the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A zero-voltage switching control device for GaN devices includes a zero-voltage switching control circuit board and a GaN chip body. The GaN chip body is fixedly mounted on the upper end of the zero-voltage switching control circuit board. A terminal block is inserted and installed inside the zero-voltage switching control circuit board. The terminal block includes a crimp-type terminal housing, a pin fixedly connected to the bottom end of the crimp-type terminal housing, a screw-on assembly screwed to the inner side of the crimp-type terminal housing, a moving assembly installed inside the crimp-type terminal housing, and a guide tube fixedly connected to the inner side of the crimp-type terminal housing. A movable plate is slidably connected to the inner side of the clamping terminal housing, and a rubber rotating plate is rotatably connected to the inner side of the clamping terminal housing. The tightening assembly includes a screw, a chuck is fixedly connected to the bottom end of the screw, a pressure plate is rotatably connected to the outer side of the chuck, a slot is opened on the inner side of the pressure plate, a pressure block is fixedly connected to the outer side of the pressure plate, an anti-slip groove is opened at the bottom end of the pressure plate, and an anti-rotation groove is opened on one side of the pressure block. The movable assembly includes a wedge, a pull rope is fixedly connected to one side of the wedge, a return spring is fixedly connected to one side of the wedge, and a wire is inserted and installed inside the clamping terminal housing.

[0008] As a further optimization of this utility model, the bottom surface of the crimping terminal housing and the top surface of the zero-voltage switch control circuit board are on the same horizontal plane, the included angle between the pin and the zero-voltage switch control circuit board is 90°, and two screwing components are provided and symmetrically distributed inside the crimping terminal housing.

[0009] As a further optimization of this utility model, the positions of the guide tubes correspond one-to-one with the positions of the moving components, the projection of the moving plate in the vertical direction is rectangular, the upper end of the moving plate is arc-shaped, and one side of the rubber rotating plate is arc-shaped.

[0010] As a further optimization of this utility model, the screw and the chuck are on the same axis, the opening shape of the slot is exactly the same as that of the chuck, and two pressure blocks are provided, which are symmetrically distributed on both sides of the pressure plate.

[0011] As a further optimization of this utility model, the anti-slip groove is provided in several forms, and the multiple anti-slip grooves are evenly and equidistantly distributed at the lower end of the pressure plate. The anti-rotation groove is provided on the side of the pressure block near the pressure plate, and the anti-rotation groove is provided in several forms.

[0012] As a further optimization of this utility model, the lateral projection shape of the inclined block is a right trapezoid, the bottom end of the inclined block is attached to the inner side of the housing of the clamping terminal, and the upper end of the inclined block is attached to the bottom end of the pressure block.

[0013] As a further optimization of this utility model, the pull rope passes through the guide tube, the outer side of the pull rope is in contact with the inner side of the guide tube, one end of the pull rope is fixedly connected to a movable plate, and one end of the reset spring is fixedly connected to a compression-type wiring terminal housing.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the device achieves three-dimensional wrapping and fixing of the wires through the set wiring terminals. The anti-slip groove on the pressure plate and the anti-rotation groove on the pressure block can effectively suppress the radial displacement and radial rotation of the wires in the high-frequency vibration environment, prevent the wires from slipping out of the wiring terminals, and significantly improve the stability and reliability of the electrical connection of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the terminal block structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the terminal block of this utility model;

[0019] Figure 4 This is an exploded structural diagram of the screwing assembly of this utility model;

[0020] Figure 5 This utility model Figure 4 Schematic diagram of the structure at point A in the middle;

[0021] Figure 6 This is a schematic diagram of the structure of the mobile component of this utility model.

[0022] In the diagram: 1. Zero-voltage switch control circuit board; 2. GaN chip body;

[0023] 3. Terminal block; 31. Press-fit terminal block housing; 32. Pin;

[0024] 33. Tightening assembly; 331. Screw; 332. Chuck; 333. Pressure plate; 334. Slot; 335. Pressure block; 336. Anti-slip groove; 337. Anti-rotation groove;

[0025] 34. Moving component; 341. Inclined block; 342. Pull rope; 343. Return spring;

[0026] 35. Guide tube; 36. Moving plate; 37. Rubber rotating plate;

[0027] 4. Wires. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Please see Figure 1-6 This utility model provides a technical solution:

[0031] A zero-voltage switching control device for GaN devices includes a zero-voltage switching control circuit board 1 and a GaN chip body 2. The GaN chip body 2 is fixedly mounted on the upper end of the zero-voltage switching control circuit board 1. A terminal block 3 is inserted and installed inside the zero-voltage switching control circuit board 1. The terminal block 3 includes a clamping terminal housing 31, a pin 32 fixedly connected to the bottom end of the clamping terminal housing 31, a screw-on assembly 33 screwed inside the clamping terminal housing 31, a moving assembly 34 installed inside the clamping terminal housing 31, a guide tube 35 fixedly connected inside the clamping terminal housing 31, and a sliding connection inside the clamping terminal housing 31. The movable plate 36 has a rubber rotating plate 37 rotatably connected to the inner side of the clamping terminal housing 31. The tightening assembly 33 includes a screw 331, a chuck 332 fixedly connected to the bottom of the screw 331, a pressure plate 333 rotatably connected to the outer side of the chuck 332, a slot 334 opened on the inner side of the pressure plate 333, a pressure block 335 fixedly connected to the outer side of the pressure plate 333, an anti-slip groove 336 opened at the bottom of the pressure plate 333, and an anti-rotation groove 337 opened on one side of the pressure block 335. The movable assembly 34 includes a wedge 341, a pull rope 342 fixedly connected to one side of the wedge 341, and a return spring 343 fixedly connected to one side of the wedge 341. A wire 4 is inserted and installed inside the clamping terminal housing 31.

[0032] As a further implementation of this solution, the bottom surface of the crimping terminal housing 31 and the top surface of the zero-voltage switch control circuit board 1 are on the same horizontal plane, and the angle between the pin 32 and the zero-voltage switch control circuit board 1 is 90°. Two screwing components 33 are provided and symmetrically distributed inside the crimping terminal housing 31. The design that the bottom surface of the crimping terminal housing 31 and the top surface of the zero-voltage switch control circuit board 1 are on the same horizontal plane allows the two to fit tightly, ensuring the stability and reliability of the electrical connection. The vertical connection method with the pin 32 and the zero-voltage switch control circuit board 1 forming a 90° angle can reduce interference factors such as signal reflection and crosstalk, and improve the integrity and accuracy of the signal.

[0033] As a further implementation of this solution, the position of the guide tube 35 corresponds one-to-one with the position of the moving component 34. The projection of the moving plate 36 in the vertical direction is rectangular. The upper end of the moving plate 36 is arc-shaped, and one side of the rubber rotating plate 37 is arc-shaped. The arc-shaped setting at the upper end of the moving plate 36 can prevent the moving plate 36 from scratching or damaging the rubber rotating plate 37 when it comes into contact with the rubber rotating plate 37. The arc-shaped setting on one side of the rubber rotating plate 37 can prevent it from squeezing and breaking the wire 4 when it comes into contact with the wire 4.

[0034] As a further implementation of this solution, screw 331 and chuck 332 are coaxial, the shape of the groove 334 is exactly the same as that of chuck 332, two pressure blocks 335 are provided, the two pressure blocks 335 are symmetrically distributed on both sides of pressure plate 333, several anti-slip grooves 336 are provided, the multiple anti-slip grooves 336 are evenly and equidistantly distributed at the lower end of pressure plate 333, and several anti-rotation grooves 337 are provided on the side of pressure block 335 near pressure plate 333. The concentric design between screw 331 and chuck 332 ensures that screw 331 is tightened... During the process, the chuck 332 can apply a stable downward pressure to the pressure plate 333 to avoid uneven force due to axial deviation. The opening shape of the groove 334 is exactly the same as that of the chuck 332, so that the chuck 332 can be tightly engaged with the matching pressure block 335, increasing the strength of the connection and preventing relative displacement between components due to vibration and other factors during equipment operation. The design of the anti-slip groove 336 can increase the friction between the pressure plate 333 and the wire 4, playing a key anti-slip role. The setting of the anti-rotation groove 337 can prevent the wire 4 from rotating radially when it shakes.

[0035] As a further implementation of this solution, the lateral projection shape of the inclined block 341 is a right-angled trapezoid. The bottom end of the inclined block 341 is attached to the inner side of the clamping terminal housing 31, and the top end of the inclined block 341 is attached to the bottom end of the pressure block 335. The pull rope 342 passes through the guide tube 35, and the outer side of the pull rope 342 is attached to the inner side of the guide tube 35. One end of the pull rope 342 is fixedly connected to the moving plate 36, and one end of the return spring 343 is fixedly connected to the clamping terminal housing 31. The top end of the inclined block 341 is attached to the pressure block 335. The bottom end of block 335 is attached, which forms a clear and stable force transmission path. When the pressure block 335 exerts a pressing force on the inclined block 341, the inclined block 341 can be squeezed and displaced. When the bottom end of the inclined block 341 is attached to the inner side of the clamping terminal housing 31, it can apply a stable force to the reset spring 343 and the pull rope 342. The design of the guide tube 35 provides a stable guide for the movement of the pull rope 342, so that it can better pull the moving plate 36.

[0036] Working process: When using the device, insert the wire 4 into the crimping terminal housing 31, then use a screwdriver to rotate the tightening assembly 33, thereby changing the relative position of the screw 331 and the crimping terminal housing 31. When the screw 331 rotates downward, the chuck 332 rotates in the pressure plate 333. This prevents the screw 331 from driving the pressure plate 333 to rotate through the fixedly connected chuck 332 when the screw 331 is tightened, thus avoiding displacement of the pressure plate 333. The chuck 332 will press the pressure plate 333 downward, causing the pressure plate 333 to move the outer fixed connection slot 334 downward. When the slot 334 moves downward, it will press the inclined block 341, causing the inclined block 341 to slide. When the inclined block 341 slides, it will press the return spring 343, causing the return spring 343 to deform. At the same time, the inclined block 341 will pull the pull rope 342, causing the pull rope 342 to pull... The movable plate 36, which is fixedly connected to one end, moves. The guide tube 35 makes the movement of the pull rope 342 more precise, ensuring that the movable plate 36 slides smoothly. When the movable plate 36 slides, it will exert a force on the rubber rotating plate 37, causing the rubber rotating plate 37 to rotate upward and squeeze the wire 4 inserted into the inner side of the clamping terminal housing 31. The material of the rubber rotating plate 37 allows it to deform to better fit and squeeze the wire 4. At the same time, after the wire 4 is deformed by the pressure plate 333, it will contact the side of the pressure block 335 with the anti-rotation groove 337. The anti-rotation groove 337 can prevent the wire 4 from rotating radially. The anti-slip groove 336 at the lower end of the pressure plate 333 can prevent the wire 4 from slipping out of the clamping terminal housing 31, which enhances the connection stability of the wire 4 and strengthens the mechanical strength of the electrical connection of the device.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A zero-voltage switching control device of GaN device, comprising a zero-voltage switching control circuit board (1) and a GaN chip main body (2), characterized in that: The zero-voltage switch control circuit board (1) has a GaN chip body (2) fixedly installed on its upper end, and a wiring terminal (3) is inserted and installed on the inner side of the zero-voltage switch control circuit board (1). The terminal block (3) includes a crimping terminal housing (31), a pin (32) is fixedly connected to the bottom of the crimping terminal housing (31), a screwing assembly (33) is screwed to the inside of the crimping terminal housing (31), a moving assembly (34) is installed inside the crimping terminal housing (31), a guide tube (35) is fixedly connected to the inside of the crimping terminal housing (31), a moving plate (36) is slidably connected to the inside of the crimping terminal housing (31), and a rubber rotating plate (37) is rotatably connected to the inside of the crimping terminal housing (31). The tightening assembly (33) includes a screw (331), a chuck (332) is fixedly connected to the bottom end of the screw (331), a pressure plate (333) is rotatably connected to the outside of the chuck (332), a slot (334) is provided on the inner side of the pressure plate (333), a pressure block (335) is fixedly connected to the outside of the pressure plate (333), an anti-slip groove (336) is provided at the bottom end of the pressure plate (333), and an anti-rotation groove (337) is provided on one side of the pressure block (335). The moving component (34) includes a wedge (341), a pull rope (342) is fixedly connected to one side of the wedge (341), and a return spring (343) is fixedly connected to one side of the wedge (341). A wire (4) is inserted and installed inside the housing (31) of the compression type terminal.

2. The zero-voltage switching control device for GaN devices according to claim 1, characterized in that: The bottom surface of the crimped terminal housing (31) is on the same horizontal plane as the top surface of the zero voltage switch control circuit board (1). The angle between the pin (32) and the zero voltage switch control circuit board (1) is 90°. Two screwing components (33) are provided and are symmetrically distributed inside the crimped terminal housing (31).

3. The zero-voltage switching control device for GaN devices according to claim 1, characterized in that: The position of the guide tube (35) corresponds one-to-one with the position of the moving component (34). The projection of the moving plate (36) in the vertical direction is rectangular. The upper end of the moving plate (36) is arc-shaped. One side of the rubber rotating plate (37) is arc-shaped.

4. The zero-voltage switching control device for GaN devices according to claim 1, characterized in that: The screw (331) and the chuck (332) are on the same axis. The opening shape of the slot (334) is exactly the same as that of the chuck (332). There are two pressure blocks (335), which are symmetrically distributed on both sides of the pressure plate (333).

5. The zero-voltage switching control device for GaN devices according to claim 1, characterized in that: The anti-slip groove (336) is provided in a plurality of manners, and the plurality of anti-slip grooves (336) are evenly and equidistantly distributed at the lower end of the pressure plate (333). The anti-rotation groove (337) is provided on the side of the pressure block (335) near the pressure plate (333), and the anti-rotation groove (337) is provided in a plurality of manners.

6. The zero-voltage switching control device for GaN devices according to claim 1, characterized in that: The horizontal projection shape of the inclined block (341) is a right trapezoid. The bottom end of the inclined block (341) is attached to the inner side of the housing (31) of the clamping terminal, and the upper end of the inclined block (341) is attached to the bottom end of the pressure block (335).

7. The zero-voltage switching control device for GaN devices according to claim 1, characterized in that: The pull rope (342) passes through the guide tube (35), the outer side of the pull rope (342) is in contact with the inner side of the guide tube (35), one end of the pull rope (342) is fixedly connected to a moving plate (36), and one end of the reset spring (343) is fixedly connected to a clamping terminal housing (31).

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