High-power electronic switch with key control

Abstract

The utility model discloses a high-power electronic switch with key control, which can control the on-off of a DC9-DC36V power supply, so that the electronic switch can be suitable for various different power supply voltage environments, and the application range and the flexibility of the electronic switch are greatly improved. Through the design of the key detection chip and the MOSFET driving circuit, the inching trigger control function is realized, and a user can select the initial state of the MOSFET to be on or off when the MOSFET is powered on according to the requirement. The characteristic not only improves the usability of the equipment, but also enables the equipment to work more flexibly in a specific application scene; the MOSFET selected by the utility model can bear overlarge current, so that the electronic switch can be suitable for occasions where large current passes, such as a main power switch of electronic equipment such as a display. And meanwhile, the reliability and the stability of the equipment are also improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic switch technology, and in particular to a high-power electronic switch with button control. Background Technology

[0002] In electronic devices such as monitors, OSD buttons are typically used to control various functions of the device. However, traditional OSD buttons are momentary, lack latching functionality, and require the video board to be powered on before they can detect button signals. This necessitates that the video board be continuously powered on while the monitor's main power cord remains plugged in.

[0003] When a video board crashes or malfunctions, it requires a power-off reset to restore normal operation, which is impractical. Therefore, there is an urgent need for a high-power electronic switch with button control that can directly control the main power supply to improve the reliability and ease of use of the equipment. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Therefore, to solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-power electronic switch with button control, comprising:

[0006] A DC-DC converter chip is used to convert a wide range of input voltages into a stable DC 5V power supply.

[0007] The button detection chip is connected to the button, detects the button's trigger signal, and outputs high and low levels according to the signal.

[0008] The control logic module, including a MOSFET driving circuit, is connected to the output of the key detection chip and is used to receive high and low level signals transmitted by the key detection chip and control the on and off state of the MOSFET accordingly.

[0009] MOSFET, as the core component of high-power electronic switches, has its gate connected to the output terminal of the control logic module, its drain connected to the power supply voltage (VIN), and its source connected to the output voltage (VOUT), and is used to realize the on-off control of the power supply.

[0010] When powered on, the button detection chip outputs a low-level signal, which keeps the MOSFET off through the control logic module. When the button is pressed, the button detection chip outputs a high-level signal, which turns on the MOSFET through the control logic module, thus enabling the power supply. When the button is pressed again, the button detection module outputs a low-level signal again, which turns off the MOSFET through the control logic module, thus turning off the power supply.

[0011] As a preferred embodiment of the high-power electronic switch with button control described in this utility model, the DC-DC conversion chip, the button detection chip, and the MOSFET driving circuit are all integrated on the same circuit board, forming a compact and reliable electronic switch structure.

[0012] In a preferred embodiment of the high-power electronic switch with button control described in this utility model, a DC 5V power supply is used to power the button detection chip, and the voltage value is set in the range of 3V to 5V.

[0013] As a preferred embodiment of the high-power electronic switch with button control described in this utility model, the selected MOSFET is capable of withstanding excessive current. The magnitude of the current it can withstand is related to the specifications of the selected MOSFET, making the electronic switch suitable for use in applications requiring large current flow, thus meeting the needs of different application scenarios and ensuring the safety and stability of the electronic switch.

[0014] As a preferred embodiment of the high-power electronic switch with button control described in this utility model, the button detection chip adopts the EJ2130E-DDC9E4 chip from Shenzhen Lijing Microelectronics Technology Co., Ltd., and the DC-DC conversion chip adopts the ME3132 chip from Weimeng Electronics. The operating voltage range of these chips is 4.7V to 40V, and the operating temperature range is -40℃ to 85℃, ensuring the stability and reliability of the power supply. Both the button detection chip and the button control chip are domestically produced chips, achieving complete localization, reducing costs, and improving the product's independent controllability.

[0015] As a preferred embodiment of the high-power electronic switch with button control described in this utility model, it further includes an adjustable output voltage module. The output voltage of the DC-DC converter chip can be determined by adjusting the resistance values ​​of resistors R1 and R2, and the specific calculation formula is V. out =0.6*(R1+R2) / R2, which allows users to adjust the output voltage according to actual needs.

[0016] As a preferred embodiment of the high-power electronic switch with button control described in this utility model, it further includes an initial state setting module for setting the initial state of the MOSFET to be on or off when powered on. This module can be configured according to user needs.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model can control the switching on and off of DC9 to DC36V power supplies. This feature makes the electronic switch applicable to a variety of different power supply voltage environments, greatly improving its applicability and flexibility.

[0019] 2. This invention achieves a momentary trigger control function through the design of a button detection chip and a MOSFET driving circuit. Users can select whether the initial state of the MOSFET is on or off upon power-up. This feature not only improves the ease of use of the device but also enables it to operate more flexibly in specific application scenarios.

[0020] 3. The MOSFET used in this invention can withstand excessive current, which makes the electronic switch suitable for applications requiring high current flow, such as the main power switch of electronic devices like displays. This also improves the reliability and stability of the equipment.

[0021] 4. This invention reduces costs by using domestically produced DC-DC converter chips, button detection chips, and MOSFETs, while maintaining the simplicity and reliability of control. This feature gives the electronic switch a significant advantage in market competition. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0023] Figure 1 This is a schematic diagram of the overall framework structure of this utility model.

[0024] Figure 2 This is the circuit diagram of the DC-DC power supply of this utility model.

[0025] Figure 3 This is a circuit diagram of the key detection chip of this utility model.

[0026] Figure 4 This is a schematic diagram of the MOSFRET control principle of this utility model. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0030] Reference Figures 1-4 This invention provides a high-power electronic switch with button control, which consists of a DC-DC converter chip for generating DC5V power, a button detection chip, a control logic module (i.e., a MOSFET drive circuit), and MOSFETs, among other core components.

[0031] The DC-DC converter chip is used to convert a wide input voltage (DC9V to DC36V) into a stable DC5V power supply to power the entire switching system; the DC5V power supply is used to power the key detection chip EJ2130E-DDC9E4, and the voltage value can be set from 3V to 5V.

[0032] The button detection chip is connected to the button to detect the button's trigger signal and transmit the signal to the MOSFET drive circuit.

[0033] After receiving the signal from the button detection chip, the MOSFET driver circuit uses a P-MOSFET to control the on / off state of the positive terminal of the power supply, thereby achieving power supply on / off control. Its circuit schematic is shown below. Figure 4 .

[0034] This invention relates to a high-power electronic switch with button control that integrates components such as a DC-DC converter chip, a button detection chip, and a MOSFET drive circuit onto the same circuit board, forming a compact and reliable electronic switch structure that is easy to install and use.

[0035] The high-power electronic switch with button control of this invention uses a MOSFET that can withstand excessive current. The current magnitude is related to the specifications of the selected MOSFET to meet the needs of different application scenarios.

[0036] The button detection chip used is the EJ2130E-DDC9E4 chip from Shenzhen Lijing Microelectronics Technology Co., Ltd. This solution uses out1 output, which outputs a low level upon power-up to keep the MOSFET off. The circuit schematic is shown below. Figure 3 .

[0037] The DC-DC power supply uses the ME3132 DC-DC converter chip from Micromob Electronics. The chip has an operating voltage range of 4.7V to 40V and an operating temperature range of -40℃ to 85℃.

[0038] This invention also includes an adjustable output voltage module. The output voltage of the DC-DC converter chip can be determined by adjusting the resistance values ​​of resistors R1 and R2. The specific calculation formula is V. out =0.6*(R1+R2) / R2, which allows users to adjust the output voltage according to actual needs, ensuring the stability and reliability of the power supply;

[0039] Both the button detection chip and the button detection chip of this utility model are domestically produced, achieving complete localization, reducing costs, and improving the product's independent controllability.

[0040] This invention also includes an initial state setting module, which is used to set the initial state of the MOSFET to be on or off when powered on. This module can be configured according to user needs, further improving the flexibility and ease of use of the device.

[0041] In this embodiment, the specific steps in actual use are as follows:

[0042] Power supply stage: The switching power supply provides a stable DC5V power supply to the key detection chip EJ2130E-DDC9E4 to ensure that the chip can work normally; the voltage value can be set as needed, ranging from 3V to 5V;

[0043] Power-on reset phase: Upon power-on, the button detection chip's OUT1 outputs a low-level signal; this signal controls the transistor, causing the transistor's V... BE =0V, transistor Q5 is cut off; at this time, the V of the MOSFET is... GS =0V, the MOSFET is also in the off state, and the power supply is not powered;

[0044] Button-triggered power-on phase: When a button is pressed, the OUT1 of the button detection chip outputs a high-level signal; this signal causes the transistor's VBE to be greater than or equal to 0.6V, turning the transistor on; at this time, the MOSFET's VBE... GS =Vin / 2 (Vin is the power supply voltage), the MOSFET turns on, and the power supply starts to supply power;

[0045] Button-triggered power-off phase: When the button is pressed again, the OUT1 of the button detection chip outputs a low-level signal again; this signal causes the transistor to turn off, the VGS of the MOSFET to be 0V, the MOSFET also turns off again, and the power supply is cut off.

[0046] Cyclic control phase: By repeatedly pressing and releasing the button, the power supply can be cyclically controlled. This function allows users to conveniently control the on / off state of electronic devices via buttons.

[0047] The key step of this invention lies in the design of a button detection chip and a MOSFET drive circuit, which realizes a momentary trigger control function and allows selection of the initial power-on state through circuit settings. This design not only improves the flexibility and ease of use of the device but also makes the device more intelligent and user-friendly in terms of control.

[0048] In practical implementation, assembly and debugging can be carried out according to the circuit diagram and component connection method shown in the attached diagram. In actual applications, appropriate DC-DC conversion chips, key detection chips, MOSFETs, and other components can be selected as needed, and relevant circuit parameters can be adjusted to meet the requirements of specific application scenarios.

[0049] It is worth noting that the entire device is controlled by a controller. Since the controller is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-power electronic switch with push-button control, characterized in that, include: A DC-DC converter chip is used to convert a wide range of input voltages into a stable DC 5V power supply. The button detection chip is connected to the button, detects the button's trigger signal, and outputs high and low levels according to the signal. The control logic module, including a MOSFET driving circuit, is connected to the output of the key detection chip and is used to receive high and low level signals transmitted by the key detection chip and control the on and off state of the MOSFET accordingly. MOSFET, as the core component of high-power electronic switches, has its gate connected to the output terminal of the control logic module, its drain connected to the power supply voltage, and its source connected to the output voltage, and is used to realize the on and off control of the power supply. When powered on, the button detection chip outputs a low-level signal, which keeps the MOSFET off through the control logic module. When the button is pressed, the button detection chip outputs a high-level signal, which turns on the MOSFET through the control logic module, thus enabling the power supply. When the button is pressed again, the button detection module outputs a low-level signal again, which turns off the MOSFET through the control logic module, thus turning off the power supply.

2. The high-power electronic switch with button control as described in claim 1, characterized in that: The DC-DC converter chip, key detection chip, and MOSFET drive circuit are all integrated on the same circuit board, forming a compact and reliable electronic switch structure.

3. The high-power electronic switch with button control as described in claim 1, characterized in that: This electronic switch is suitable for use in applications requiring high current flow, such as the main power switch for displays.

4. The high-power electronic switch with button control as described in claim 1, characterized in that: The DC 5V power supply is used to power the button detection chip, and the voltage value is set in the range of 3V~5V.

5. The high-power electronic switch with push-button control as described in claim 1, characterized in that: It also includes an adjustable output voltage module, where the output voltage of the DC-DC converter chip is determined by adjusting the resistance values ​​of resistors R1 and R2.

6. The high-power electronic switch with button control as described in claim 1, characterized in that: It also includes an initial state setting module, which is used to set the initial state of the MOSFET to be on or off when powered on. This module can be configured according to user needs.

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