Control circuit capable of realizing automatic power-on of electronic equipment

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By designing the main power-on main control circuit and other circuits that cooperate with each other in 3C electronic products, the level signal of the charging head triggers the automatic power-on program, the problems of damage to the power-on button or function conflict, USB port occupation and RC circuit unstable are solved, and the automatic power-on function with stable and non-occupancy USB port is achieved.

CN223022564UActive Publication Date: 2025-06-24SHENZHEN EMDOOR DIGITAL TECH

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Patent Information

Application Number: CN202422224633.2
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-09-11
Publication Date: 2025-06-24
Estimated Expiration: 2034-09-11

AI Technical Summary

Technical Problem

The existing 3C electronic products cannot be turned on when the power-on button is damaged or the function conflicts. They rely on the activation opportunity to be inserted into the USB device to occupies the USB port, and the power-on and boot of the RC circuit on the key end is unstable.

Method used

A control circuit is designed, including a power-on switch circuit, a power-on automatic power-on main control circuit and a USB main device port circuit. The automatic power-on program is triggered by the level signal on the charging head, so that it can automatically turn on without the power-on button and USB device.

Benefits of technology

It realizes stable and automatic power-on of 3C electronic products when the boot button function fails, avoids the occupation of USB ports, reduces the number and cost of electrical components, and has a simple and reliable circuit, which does not affect the use of other functions.

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Abstract

The utility model provides a control circuit capable of realizing power-on automatic power-on of electronic equipment, which comprises an input end of a power-on power-on switching circuit, an input end of a power-on automatic power-on master control circuit is connected with a charging head output end of a 3C electronic product, an input end of a USB master equipment port circuit can be connected with USB slave equipment, and an output end of the USB master equipment port circuit can be connected with the charging head output end of the 3C electronic product. The output end of the power-on power-on switch circuit and the output end of the USB main device port circuit are connected with the input end of the power-on automatic power-on main control circuit, the output end of the power-on automatic power-on main control circuit is connected with the input end of a power management chip of the 3C electronic product, and the output end of the power management chip of the 3C electronic product is connected with an MCU chip of the 3C electronic product. And the MCU chip of the 3C electronic product is also connected with the input end of the power-on starting switch circuit. The beneficial effects of the utility model are that the power-on automatic power-on function can be triggered through charging, a power-on button is not needed, and a USB port is not occupied.

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Description

Technical Field

[0001] The utility model relates to the technical field of circuits, and particularly relates to a control circuit capable of realizing automatic power-on and startup of an electronic device. Background Art

[0002] 3C products refer to the combination of computers (Computer), communications (Communication), and consumer electronics (Consumer Electronics), also known as information appliances. A PMIC (Power Management IC), also known as a power management IC, is an integrated circuit for specific purposes, and its function is to manage the power supply for the main system. Currently, for 3C electronic products on the market such as advertising machines and treadmills, the general power-on and startup methods are the three mainstream automatic power-on methods. The first is to achieve startup by fixedly pulling down the level state through the power-on button. The second is to trigger startup by inserting a USB device to change the level state. The third is to achieve automatic power-on by adding an RC circuit at the power-on button terminal. However, all of these methods inevitably have some drawbacks:

[0003] First: Achieving startup by fixedly pulling down the power-on button. However, if the power-on button is damaged or has other functions, such as waking up the screen or other functions that require the combination of the power-on button, it may cause other functions to be unavailable.

[0004] Second: Triggering startup by inserting a USB device. However, this method can only start up on the premise that a USB device is inserted. If no USB device is inserted, startup cannot be achieved. Moreover, this method will directly occupy the USB port of the 3C electronic product, resulting in the inability to use other functions of the USB port of the 3C electronic product. For example, some advertising machines that need to insert a USB device to start playing.

[0005] Third: Achieving automatic power-on by adding an RC circuit at the button terminal of the 3C electronic product. However, due to the uncontrollable charging and discharging time of the RC circuit, there is a certain delay, and stable automatic power-on cannot be achieved in some specific scenarios of continuous power-on and power-off. For example, within the delay time of the RC circuit, repeatedly plugging and unplugging the power plug of the 3C electronic product may cause the 3C electronic product to directly crash. Summary of the Utility Model

[0006] To solve the problems in the prior art, the present utility model provides a control circuit capable of realizing automatic power-on and boot-up of an electronic device. By setting up a power-on and boot-up switch circuit, a main control circuit for automatic power-on and a USB host device port circuit that cooperate with each other in a 3C electronic product, the main control circuit for automatic power-on can receive the level signal of the power-on and boot-up switch circuit when the charger of the 3C electronic product is powered on and transmit it to the power management chip of the 3C electronic product to trigger the automatic boot-up program. It can realize the function of triggering automatic power-on and boot-up through charging, can automatically boot up without a power-on button, does not occupy the USB port, and has stable power-on and boot-up, solving the problems in the prior art that the 3C electronic product cannot boot up when the power-on button fails, relying on inserting a USB device to trigger boot-up will occupy the USB port, and adding an RC circuit at the button terminal results in unstable power-on and boot-up.

[0007] A control circuit capable of realizing automatic power-on and boot-up of an electronic device provided by the present utility model is arranged between the charger of a 3C electronic product and the power management chip of the 3C electronic product, and includes a power-on and boot-up switch circuit, a main control circuit for automatic power-on and a USB host device port circuit. The input end of the power-on and boot-up switch circuit and the input end of the main control circuit for automatic power-on are connected to the output end of the charger of the 3C electronic product. The input end of the USB host device port circuit can access a USB slave device. The output end of the power-on and boot-up switch circuit and the output end of the USB host device port circuit are connected to the input end of the main control circuit for automatic power-on. The output end of the main control circuit for automatic power-on is connected to the input end of the power management chip of the 3C electronic product. The output end of the power management chip of the 3C electronic product is connected to the MCU chip of the 3C electronic product. The MCU chip of the 3C electronic product is also connected to the input end of the power-on and boot-up switch circuit. The main control circuit for automatic power-on can receive the level signal of the power-on and boot-up switch circuit when the charger of the 3C electronic product is powered on and transmit it to the power management chip of the 3C electronic product to trigger the automatic boot-up program.

[0008] For further improvement of the present utility model, the power-on and boot-up switch circuit is provided with a triode Q2, a resistor R5, a resistor R7, a resistor R8 and a resistor R9. Among them, the base of the triode Q2 is connected to one end of the resistor R7 and one end of the resistor R9. The other end of the resistor R7 is connected to the MCU chip of the 3C electronic product. The collector of the triode Q2 is connected to one end of the resistor R5, one end of the resistor R8 and the input end of the main control circuit for automatic power-on. The other end of the resistor R5 is connected to the output end of the charger of the 3C electronic product. The other ends of the resistor R8, the resistor R9 and the emitter of the triode Q2 are grounded.

[0009] The present utility model is further improved. The power-on automatic startup main control circuit is provided with a main control chip U1, an OR gate D1, a capacitor C1, a capacitor C2 and a resistor R3. Among them, the main control chip U1 has 5 pins. The first pin of the main control chip U1 is connected to the input end of the power management chip of the 3C electronic product and one end of the capacitor C2. The third pin of the main control chip U1 is connected to one end of the resistor R3. The fourth pin of the main control chip U1 is connected to the output end of the OR gate D1. The input end of the OR gate D1 is connected to the collector of the triode Q2 and the output end of the USB host device port circuit. The fifth pin of the main control chip U1 is connected to the output end of the charger head of the 3C electronic product and one end of the capacitor C1. The second pin of the main control chip U1, the other end of the resistor R3, the other end of the capacitor C2 and the other end of the capacitor C1 are grounded.

[0010] The present utility model is further improved. The USB host device port circuit is provided with a triode Q1, a resistor R2, a resistor R4 and a resistor R6. Among them, the base of the triode Q1 is connected to one end of the resistor R4 and one end of the resistor R6. The other end of the resistor R4 can be connected to a USB slave device. The collector of the triode Q1 is connected to one end of the resistor R2 and the input end of the OR gate D1. The other end of the resistor R2 can be connected to a USB slave device. The other end of the resistor R6 and the emitter of the triode Q1 are grounded.

[0011] The present utility model is further improved. The model of the main control chip U1 is LPW5210.

[0012] The present utility model is further improved. The resistance value of the resistor R5 is 10 KΩ, the resistance value of the resistor R7 is 1 KΩ, the resistance value of the resistor R8 is 47 KΩ, and the resistance value of the resistor R9 is 100 KΩ.

[0013] The present utility model is further improved. The resistance value of the resistor R3 is 7.5 KΩ, and the capacitance values of the capacitor C1 and the capacitor C2 are both 4.7 μF.

[0014] The present utility model is further improved. The model of the power management chip of the 3C electronic product is MT6358.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: A control circuit capable of realizing automatic power-on and startup of an electronic device is provided. By arranging a power-on startup switch circuit, a main control circuit for automatic power-on startup, and a USB host device port circuit that cooperate with each other in a 3C electronic product, the main control circuit for automatic power-on startup can receive the level signal of the power-on startup switch circuit when the charger of the 3C electronic product is powered on and transmit it to the power management chip of the 3C electronic product to trigger the automatic startup program. It can realize the function of triggering automatic power-on startup through charging, can automatically start without a power-on button, does not occupy the USB port, has stable power-on startup, can realize automatic power-on startup when the power-on button function fails, and does not rely on inserting a USB device to trigger startup. The additional electrical components required are few, the cost is low, the circuit is simple, it utilizes the charging trigger startup mechanism of the power management chip, is stable and reliable, and does not affect the use of other functions, such as the USB function. It solves the problems in the prior art that 3C electronic products cannot start when the power-on button is unavailable, relying on inserting a USB device to trigger startup will occupy the USB port, and adding an RC circuit at the button end for power-on startup is unstable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic block diagram of a control circuit capable of realizing automatic power-on and startup of an electronic device according to the present utility model;

[0018] Figure 2 It is a circuit diagram of the power-on startup switch circuit according to the present utility model;

[0019] Figure 3 It is a circuit diagram of the main control circuit for automatic power-on startup according to the present utility model;

[0020] Figure 4 It is a circuit diagram of the USB host device port circuit according to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this utility model; the terms "comprising" and "having" and any variations thereof in the specification and claims of this utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this utility model or the above drawings are used to distinguish different objects and not to describe a specific order.

[0022] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this utility model. The phrase appearing in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] To enable those skilled in the art to better understand the solution of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0024] As Figures 1 - 4As shown in the figure, a control circuit capable of realizing automatic power-on and boot-up of an electronic device provided by the present utility model is arranged between the charger of a 3C electronic product and the power management chip of the 3C electronic product. It includes a power-on and boot-up switch circuit, a main control circuit for automatic power-on and boot-up, and a USB host device port circuit. The input end of the power-on and boot-up switch circuit and the input end of the main control circuit for automatic power-on and boot-up are connected to the output end of the charger of the 3C electronic product. The input end of the USB host device port circuit can access a USB slave device. The output end of the power-on and boot-up switch circuit and the output end of the USB host device port circuit are connected to the input end of the main control circuit for automatic power-on and boot-up. The output end of the main control circuit for automatic power-on and boot-up is connected to the input end of the power management chip of the 3C electronic product. The output end of the power management chip of the 3C electronic product is connected to the MCU chip of the 3C electronic product. The MCU chip of the 3C electronic product is also connected to the input end of the power-on and boot-up switch circuit. The model of the power management chip of the 3C electronic product is MT6358. In this embodiment, the main control circuit for automatic power-on and boot-up can receive the level signal of the power-on and boot-up switch circuit when the charger of the 3C electronic product is powered on and transmit it to the power management chip of the 3C electronic product to trigger the automatic boot-up program, which can realize the function of automatic power-on and boot-up triggered by charging. It can be powered on automatically without a power-on button, does not occupy the USB port, has stable power-on, can realize automatic power-on when the power-on button function fails, and does not rely on inserting a USB device to trigger power-on. The additional electronic components required are few, the cost is low, the circuit is simple, it utilizes the charging-triggered boot-up mechanism of the power management chip, is stable and reliable, and does not affect the use of other functions, such as the USB function.

[0025] As Figure 2 shown, the power-on and boot-up switch circuit is provided with a triode Q2, a resistor R5, a resistor R7, a resistor R8, and a resistor R9. Among them, the base of the triode Q2 is connected to one end of the resistor R7 and one end of the resistor R9. The other end of the resistor R7 is connected to the MCU chip of the 3C electronic product. The collector of the triode Q2 is connected to one end of the resistor R5, one end of the resistor R8, and the input end of the main control circuit for automatic power-on and boot-up. The other end of the resistor R5 is connected to the output end of the charger of the 3C electronic product. The other ends of the resistor R8, the resistor R9, and the emitter of the triode Q2 are grounded. The resistance value of the resistor R5 is 10KΩ, the resistance value of the resistor R7 is 1KΩ, the resistance value of the resistor R8 is 47KΩ, and the resistance value of the resistor R9 is 100KΩ. In this embodiment, the power-on and boot-up switch circuit is used to send a power-on and boot-up switch signal to the main control circuit for automatic power-on and boot-up when the charger of the 3C electronic product is powered on.

[0026] As Figure 3As shown in the figure, the power-on automatic startup main control circuit is provided with a main control chip U1, an OR gate D1, a capacitor C1, a capacitor C2, and a resistor R3. Among them, the model of the main control chip U1 is LPW5210. The main control chip U1 has 5 pins. The first pin of the main control chip U1 is connected to the input end of the power management chip of the 3C electronic product and one end of the capacitor C2. The third pin of the main control chip U1 is connected to one end of the resistor R3. The fourth pin of the main control chip U1 is connected to the output end of the OR gate D1. The input end of the OR gate D1 is connected to the collector of the triode Q2 and the output end of the USB host device port circuit. The fifth pin of the main control chip U1 is connected to the output end of the charger head of the 3C electronic product and one end of the capacitor C1. The second pin of the main control chip U1, the other end of the resistor R3, the other end of the capacitor C2, and the other end of the capacitor C1 are grounded. The resistance value of the resistor R3 is 7.5 KΩ, and the capacitance values of the capacitor C1 and the capacitor C2 are both 4.7 μF. In this embodiment, the power-on automatic startup main control circuit is used to receive the level signal of the power-on startup switch circuit when the charger head of the 3C electronic product is powered on and transmit it to the power management chip of the 3C electronic product to trigger the automatic startup program.

[0027] As Figure 4 shown in the figure, the USB host device port circuit is provided with a triode Q1, a resistor R2, a resistor R4, and a resistor R6. Among them, the base of the triode Q1 is connected to one end of the resistor R4 and one end of the resistor R6. The other end of the resistor R4 can be connected to a USB slave device. The collector of the triode Q1 is connected to one end of the resistor R2 and the input end of the OR gate D1. The other end of the resistor R2 can be connected to a USB slave device. The other end of the resistor R6 and the emitter of the triode Q1 are grounded. In this embodiment, the USB host device port circuit is used to insert a USB slave device and can be shared with the power-on automatic startup function without being occupied by the power-on automatic startup function for the USB port.

[0028] Working principle: The utility model provides a control circuit capable of realizing automatic power-on of electronic equipment. When the charging head of the 3C electronic product is connected to the power supply for charging, the charging head of the 3C electronic product outputs a 5V voltage to the main control chip U1 for power supply. At the same time, an enable signal is given to the main control chip U1 through the pull-up resistor R5 and the OR gate D1, so that the main control chip U1 outputs a 5V voltage to the power management chip of the 3C electronic product. After receiving the 5V voltage signal, the power management chip of the 3C electronic product executes the automatic power-on process. This is the power management chip of the 3C electronic product with a USB power supply to trigger the power-on function. , stable and reliable. After the power-on automatic startup process is executed, the MCU chip of the 3C electronic product outputs a high-level POWER_ONIO signal to the transistor Q2. The transistor Q2 is turned on and the enable high-level signal to the main control chip U1 is pulled down through R5. The main control chip U1 enables a low level and cannot output a 5V voltage to the power management chip of the 3C electronic product. At this time, the startup process has been completed. The power-on startup switch circuit only plays a startup role. After the startup is completed, it is completely turned off without affecting the use of other functions of the USB port. At this time, the USB host device port circuit can normally connect to the USB slave device. In addition, the power-on button is not occupied and can be used normally.

[0029] As can be seen from the above, the utility model provides a control circuit capable of realizing automatic power-on of an electronic device. By arranging a power-on power-on switch circuit, a power-on automatic power-on main control circuit and a USB host device port circuit that cooperate with each other in a 3C electronic product, the power-on automatic power-on main control circuit can receive the level signal of the power-on power-on switch circuit when the charging head of the 3C electronic product is powered on and transmit it to the power management chip of the 3C electronic product to trigger the automatic power-on program, so that the automatic power-on function triggered by charging can be realized, and the device can be automatically powered on without a power button, and the USB port is not occupied. The power-on is stable, and the automatic power-on can be realized when the power button function fails, and there is no need to rely on inserting a USB device to trigger the power-on. Few electrical components need to be added, the cost is low, the circuit is simple, and the charging trigger power-on mechanism of the power management chip is utilized. It is stable and reliable, and does not affect the use of other functions, such as the USB function. The problem that the 3C electronic product cannot be powered on when the power button cannot be used, the USB port is occupied by relying on inserting a USB device to trigger the power-on, and the power-on is unstable when an RC circuit is added to the button end in the prior art is solved.

[0030] The specific implementation methods described above are preferred implementation methods of the present utility model, and are not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A control circuit capable of automatically starting up an electronic device when powered on, arranged between a charging head of a 3C electronic product and a power management chip of the 3C electronic product, characterized in that: The electronic device comprises a power-on switch circuit, a power-on automatic power-on main control circuit and a USB host device port circuit. The input end of the power-on switch circuit and the input end of the power-on automatic power-on main control circuit are connected to the output end of the charging head of the 3C electronic product. The input end of the USB host device port circuit can be connected to a USB slave device. The output end of the power-on switch circuit and the output end of the USB host device port circuit are connected to the input end of the power-on automatic power-on main control circuit. The output end of the power-on automatic power-on main control circuit is connected to the input end of the power management chip of the 3C electronic product. The output end of the power management chip of the 3C electronic product is connected to the MCU chip of the 3C electronic product. The MCU chip of the 3C electronic product is also connected to the input end of the power-on switch circuit. The power-on automatic power-on main control circuit can receive the level signal of the power-on switch circuit when the charging head of the 3C electronic product is powered on and transmit it to the power management chip of the 3C electronic product to trigger the automatic power-on program.

2. The control circuit capable of realizing automatic power-on of an electronic device according to claim 1, characterized in that: The power-on switch circuit is provided with a transistor Q2, a resistor R5, a resistor R7, a resistor R8 and a resistor R9, wherein the base of the transistor Q2 is connected to one end of the resistor R7 and one end of the resistor R9, the other end of the resistor R7 is connected to the MCU chip of the 3C electronic product, the collector of the transistor Q2 is connected to one end of the resistor R5, one end of the resistor R8, and the input end of the power-on automatic start main control circuit, the other end of the resistor R5 is connected to the output end of the charging head of the 3C electronic product, and the other end of the resistor R8, the other end of the resistor R9, and the emitter of the transistor Q2 are grounded.

3. The control circuit capable of realizing automatic power-on of electronic equipment according to claim 2, characterized in that: The power-on automatic startup main control circuit is provided with a main control chip U1, an OR gate D1, a capacitor C1, a capacitor C2 and a resistor R3, wherein the main control chip U1 is provided with 5 pins, the first pin of the main control chip U1 is connected to the input end of the power management chip of the 3C electronic product and one end of the capacitor C2, the third pin of the main control chip U1 is connected to one end of the resistor R3, the fourth pin of the main control chip U1 is connected to the output end of the OR gate D1, the input end of the OR gate D1 is connected to the collector of the transistor Q2 and the output end of the USB host device port circuit, the fifth pin of the main control chip U1 is connected to the output end of the charging head of the 3C electronic product and one end of the capacitor C1, the second pin of the main control chip U1, the other end of the resistor R3, the other end of the capacitor C2, and the other end of the capacitor C1 are grounded.

4. The control circuit capable of realizing automatic power-on of electronic equipment according to claim 3, characterized in that: The USB host device port circuit is provided with a transistor Q1, a resistor R2, a resistor R4 and a resistor R6, wherein the base of the transistor Q1 is connected to one end of the resistor R4 and one end of the resistor R6, the other end of the resistor R4 can be connected to a USB slave device, the collector of the transistor Q1 is connected to one end of the resistor R2 and the input end of the OR gate D1, the other end of the resistor R2 can be connected to a USB slave device, and the other end of the resistor R6 and the emitter of the transistor Q1 are grounded.

5. The control circuit capable of realizing automatic power-on of electronic equipment according to claim 4, characterized in that: The model of the main control chip U1 is LPW5210.

6. The control circuit capable of realizing automatic power-on of electronic equipment according to claim 5, characterized in that: The resistance value of the resistor R5 is 10KΩ, the resistance value of the resistor R7 is 1KΩ, the resistance value of the resistor R8 is 47KΩ, and the resistance value of the resistor R9 is 100KΩ.

7. The control circuit capable of realizing automatic power-on of electronic equipment according to claim 6, characterized in that: The resistance value of the resistor R3 is 7.5KΩ, and the capacitance values of the capacitor C1 and the capacitor C2 are both 4.7μF.

8. The control circuit capable of realizing automatic power-on of electronic equipment according to claim 7, characterized in that: The model of the power management chip of the 3C electronic product is MT6358.