Control circuit of electronic equipment and electronic equipment

Abstract

The utility model relates to a control circuit of electronic equipment and the electronic equipment, the electronic equipment comprises a first diode, a power management chip and a charging management chip, the positive electrode of the first diode is connected with the power management chip, and the negative electrode of the first diode is connected with the charging management chip; the power management chip is used for controlling the electronic equipment to be started on the basis of the received low-level signal; the control circuit comprises a second diode, wherein the positive electrode of the second diode is connected between the positive electrode of the first diode and the power management chip; the first end of the control unit is connected with the negative electrode of the second diode, the second end of the control unit is connected to a target port in a data transmission interface of the electronic equipment, and the data transmission interface is used for being connected with external data interconnection equipment; the control unit is connected with external data interconnection equipment, the control unit is kept in a high-level state, the control unit is not connected with the external data interconnection equipment, and the control unit is kept in a low-level state. Based on the scheme, automatic startup can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a control circuit of an electronic equipment and the electronic equipment. Background Art

[0002] OTG (On-The-Go) is a recently developed technology. Announced by the USB Standardization Organization on December 18, 2001, it is primarily used to connect different devices or mobile devices for data exchange.

[0003] Mobile phones and other electronic devices with OTG functionality are now widely used in our daily lives. For example, a typical way to power on a mobile phone is to press the power button or plug it into a charger. However, when using the OTG function while the phone is powered off, the OTG cable cannot be used to trigger the phone to power on. Therefore, the current situation requires manually turning on the phone to enable the OTG function. However, this approach is clearly inconvenient. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a control circuit of an electronic device and an electronic device.

[0005] In a first aspect, the present application provides a control circuit for an electronic device, the electronic device comprising a first diode, a power management chip, and a charging management chip, wherein the positive electrode of the first diode is connected to the power management chip, the negative electrode of the first diode is connected to the charging management chip, and the power management chip is configured to control the electronic device to start up based on a received low-level signal; the control circuit comprising:

[0006] a second diode, wherein an anode of the second diode is connected between the anode of the first diode and the power management chip;

[0007] a control unit, wherein a first end of the control unit is connected to the cathode of the second diode, and a second end of the control unit is connected to a target port in a data transmission interface of the electronic device, wherein the data transmission interface is used to connect to an external data interconnection device;

[0008] Wherein, when the control unit is connected to the external data interconnection device, the control unit maintains a high level state; when the control unit is not connected to the external data interconnection device, the control unit maintains a low level state.

[0009] Optionally, the second end of the control unit is connected to the CC1 port and the CC2 port in the Type-C female port of the electronic device.

[0010] Optionally, the control unit includes a first power supply, a second power supply, a first N-type MOS transistor, a second N-type MOS transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a third diode, and a fourth diode;

[0011] The cathode of the third diode serves as the second end of the control unit and is connected to the CC1 port of the Type-C female port of the electronic device. The cathode of the fourth diode serves as the second end of the control unit and is connected to the CC2 port of the Type-C female port of the electronic device. The anode of the third diode, the anode of the fourth diode, the second end of the first resistor, the first end of the second resistor, and the gate of the first N-type MOS transistor are interconnected.

[0012] The first end of the first resistor, the first end of the third resistor, and the first power supply are connected to each other;

[0013] The second end of the second resistor is grounded;

[0014] The source of the first N-type MOS transistor is grounded, and the drain of the first N-type MOS transistor, the second end of the third resistor, the first end of the fifth resistor, and the gate of the second N-type MOS transistor are connected to each other;

[0015] The second end of the fifth resistor is grounded;

[0016] The source of the second N-type MOS transistor is grounded, the drain of the second N-type MOS transistor is connected to the second end of the fourth resistor and serves as the first end of the control unit and is connected to the cathode of the second diode;

[0017] The first end of the fourth resistor is connected to the second power supply.

[0018] Optionally, the resistance of the second resistor is higher than the resistance of the first resistor.

[0019] Optionally, the control unit further includes a first capacitor and a second capacitor;

[0020] A first end of the first capacitor is connected to the gate of the first N-type MOS transistor, and a second end of the first capacitor is grounded;

[0021] A first end of the second capacitor is connected to the gate of the second N-type MOS transistor, and a second end of the second capacitor is grounded.

[0022] Optionally, the control unit includes a third power supply, a first P-type MOS transistor, a sixth resistor, a seventh resistor, an eighth resistor, a third capacitor, a fifth diode and a sixth diode;

[0023] The cathode of the fifth diode serves as the second end of the control unit and is connected to the CC1 port of the Type-C female port of the electronic device. The cathode of the sixth diode serves as the second end of the control unit and is connected to the CC2 port of the Type-C female port of the electronic device. The anode of the fifth diode, the anode of the sixth diode, the second end of the sixth resistor, the first end of the seventh resistor, and the gate of the first P-type MOS transistor are interconnected.

[0024] The first end of the sixth resistor, the first end of the eighth resistor and the third power supply are connected to each other;

[0025] The second end of the seventh resistor is grounded;

[0026] The drain of the first P-type MOS transistor is grounded, the source of the first P-type MOS transistor is connected to the second end of the eighth resistor and serves as the first end of the control unit and is connected to the cathode of the second diode;

[0027] A first end of the third capacitor is connected to the gate of the first P-type MOS transistor, and a second end of the third capacitor is grounded.

[0028] Optionally, a fourth capacitor and a fifth capacitor are further included;

[0029] A first end of the fourth capacitor is connected to the cathode of the second diode, and a second end of the fourth capacitor is grounded;

[0030] A first end of the fifth capacitor is connected to the anode of the second diode, and a second end of the fifth capacitor is grounded.

[0031] Optionally, the capacitance of the fourth capacitor is greater than the capacitance of the fifth capacitor.

[0032] In a second aspect, the present application further provides an electronic device, comprising a control circuit of the electronic device as described in any one of the first aspects.

[0033] The present application provides a control circuit of an electronic device and the electronic device, the electronic device including a first diode, a power management chip and a charging management chip, the positive pole of the first diode being connected to the power management chip, the negative pole of the first diode being connected to the charging management chip, the power management chip being used to control the electronic device to start up based on a received low-level signal; the control circuit including: a second diode, the positive pole of the second diode being connected between the positive pole of the first diode and the power management chip; a control unit, the first end of the control unit being connected to the negative pole of the second diode, the second end of the control unit being connected to a target port in a data transmission interface of the electronic device, the data transmission interface being used to connect to an external data interconnection device; wherein, when the control unit is connected to the external data interconnection device, the control unit remains in a high-level state, and when the control unit is not connected to the external data interconnection device, the control unit remains in a low-level state. Based on the above scheme, the present application actually sets up a bypass control circuit between the original power management chip and the charging management chip of the electronic device. In the circuit composed of the original power management chip, the first diode and the charging management chip, when the electronic device is connected to charge, the charging management chip remains at a low level, which can trigger the power management chip to turn on. The present scheme connects the control unit to the power management chip through the second diode. After being connected to the external data interconnection device, the control unit can also remain at a low level, thereby triggering the power management chip to control the electronic device to turn on. In summary, the present application can automatically trigger the electronic device to turn on after connecting to the external data interconnection device, thereby performing data interconnection, avoiding the process of manually controlling the power-on of the electronic device, simplifying the operation, and improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a control circuit structure of an electronic device and a partial structure of the electronic device provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of a control circuit structure of another electronic device and a partial structure of the electronic device provided in an embodiment of the present application;

[0036] Figure 3 A schematic diagram of a control circuit structure of another electronic device and a partial structure of the electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned objectives, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present application, not all of the embodiments.

[0039] The following is an illustrative description of a control circuit of an electronic device and an electronic device provided in an embodiment of the present application with reference to the accompanying drawings.

[0040] Figure 1 This is a schematic diagram of a control circuit structure of an electronic device and a partial structure of the electronic device provided in an embodiment of the present application. The electronic device includes a first diode D1, a power management chip 001, and a charging management chip 002. The positive electrode of the first diode D1 is connected to the power management chip 001, and the negative electrode of the first diode D1 is connected to the charging management chip 002. The power management chip 001 is used to control the power-on of the electronic device based on the received low-level signal. The control circuit includes:

[0041] The second diode D2 has an anode connected between the anode of the first diode D1 and the power management chip 001 .

[0042] The control unit 200 has a first end connected to the cathode of the second diode D2 and a second end connected to a target port in a data transmission interface of the electronic device, where the data transmission interface is used to connect to an external data interconnection device.

[0043] When the control unit 200 is connected to an external data interconnection device, the control unit 200 maintains a high level state; when the control unit 200 is not connected to an external data interconnection device, the control unit 200 maintains a low level state.

[0044] like Figure 1 As shown, the electronic device in the embodiment of the present application can be an electronic device capable of data transmission, such as a mobile phone, a tablet computer, etc. The external data interconnection device in the embodiment of the present application can be a device with an OTG function, such as another mobile phone, a tablet computer, etc., which is not limited here, and the OTG device is used in the subsequent description.

[0045] In the electronic equipment of the existing technical solution, a structure capable of controlling the automatic power-on of the electronic equipment has been set. Figure 1The charging management chip 002 (charge), the first diode D1 and the power management chip 001 (PMIC) in the embodiment of the present invention are connected to the power management chip 001. The SYS_OK port of the charging management chip 002 can be connected to the CBL_PWO_N port of the power management chip 001 through the first diode D1. When the electronic device is in the off state, when the electronic device is connected to the power supply, the charging management chip 002 changes from a high level state to a low level state. After the power management chip 001 detects that the charging management chip 002 changes to a low level state, it controls the electronic device to start up. The embodiment of the present application utilizes this structure and makes further improvements to realize the control of the electronic device to start up after connecting to the OTG device.

[0046] The control unit 200 can be a circuit structure that is connected to the target port in the data transmission interface of the electronic device. Therefore, when the electronic device is connected to the OTG device, the control unit 200 can automatically connect to the OTG device. Since the control unit 200 becomes a low-level state after connecting to the OTG device, the power management chip 001 can also detect the low-level signal, and therefore will also control the electronic device to start up.

[0047] In summary, the embodiments of the present application can enable an electronic device in a shutdown state to automatically power on after connecting to an OTG device, thereby saving the manual power-on process and improving the convenience of use.

[0048] In some embodiments, the second end of the control unit 200 is connected to the CC1 port and the CC2 port of the Type-C female port of the electronic device.

[0049] Specifically, the data transmission interface of the electronic device can be a Type-C type interface, and its ports include at least a CC1 port and a CC2 port. The Type-C port will not be described in detail here. For the CC1 port and the CC2 port, since the CC signal of the corresponding port of the OTG device has a certain pull-down resistor (for example, 5.1KΩ). The control unit 200 is in an open circuit state when the OTG device is not connected, and can be in a grounded state after the OTG device is connected, so that the high and low level conversion of the control unit 200 can be realized, thereby realizing the identification of the connected OTG device. The CC1 port and the CC2 port are actually centrally symmetrical ports, and the identification of the connected OTG device can be realized regardless of whether the Type-C interface is inserted forward or reverse.

[0050] Figure 2A schematic diagram of a control circuit structure of another electronic device and a partial structure of the electronic device provided in an embodiment of the present application. In some embodiments, the control unit 200 includes a first power supply U1, a second power supply U2, a first N-type MOS transistor Q1, a second N-type MOS transistor Q2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a third diode D3, and a fourth diode D4.

[0051] The cathode of the third diode D3 serves as the second end of the control unit 200 and is connected to the CC1 port of the Type-C female port of the electronic device. The cathode of the fourth diode D4 serves as the second end of the control unit 200 and is connected to the CC2 port of the Type-C female port of the electronic device. The anode of the third diode D3, the anode of the fourth diode D4, the second end of the first resistor R1, the first end of the second resistor R2, and the gate of the first N-type MOS transistor Q1 are interconnected.

[0052] The first end of the first resistor R1 , the first end of the third resistor R3 , and the first power supply U1 are connected to each other.

[0053] A second end of the second resistor R2 is grounded.

[0054] The source of the first N-type MOS transistor Q1 is grounded, and the drain of the first N-type MOS transistor Q1 , the second end of the third resistor R3 , the first end of the fifth resistor R5 , and the gate of the second N-type MOS transistor Q2 are interconnected.

[0055] A second terminal of the fifth resistor R5 is grounded.

[0056] The source of the second N-type MOS transistor Q2 is grounded, and the drain of the second N-type MOS transistor Q2 is connected to the second end of the fourth resistor R4 and serves as the first end of the control unit 200 connected to the cathode of the second diode D2.

[0057] A first end of the fourth resistor R4 is connected to the second power supply U2.

[0058] Specifically, the connection relationship of each component is as above and as Figure 2 The CC1 and CC2 ports are grounded when the Type-C port is connected forward or reverse.

[0059] When the CC1 port (and CC2 port) are not connected to an OTG device, due to the action of the first power supply U1, the m node is in a high level state, so the first N-type MOS tube Q1 is turned on, and then the n node is grounded and in a low level state, so the o node cannot be grounded. Affected by the second power supply U2, the o node is in a high level state, and the second diode D2 is not conducting.

[0060] When the CC1 port (or CC2 port) is connected to an OTG device, the CC1 port is grounded, so the m node is in a low level state. At this time, the first N-type MOS tube Q1 is turned off, and the n node cannot be grounded. Under the action of the first power supply U1, it is in a high level state. The second N-type MOS tube Q2 is turned on, so the o node is grounded. The o node is in a low level state, and the second diode D2 is turned on. Therefore, the power management chip 001 can control the electronic device to start up.

[0061] In some embodiments, the resistance of the second resistor R2 is higher than the resistance of the first resistor R1 .

[0062] Continue reading Figure 2 When connecting an OTG device, the second resistor R2 and the first resistor R1 jointly divide the voltage. When the resistance of the second resistor R2 is higher than that of the first resistor R1, more power is distributed to the second resistor R2, resulting in a higher voltage level at the first end of the second resistor R2, ensuring that the first N-type MOS transistor Q1 is turned on. Conversely, if the resistance of the first resistor R1 is higher, the potential at node m may be lower, causing the first N-type MOS transistor Q1 to turn off, thereby causing the electronic device to start up incorrectly. When connecting an OTG device, the second resistor R2 can act as a current divider. Specifically, the resistance of the first resistor R1 can be 10KΩ, the resistance of the second resistor R2 can be 100KΩ, the resistance of the third resistor R3 can be 100KΩ, the resistance of the fourth resistor R4 can be 470KΩ, and the resistance of the fifth resistor R5 can be 470KΩ. The output voltage of the first power supply U1 and the second power supply U2 can be 1.8V.

[0063] Continue reading Figure 2 In some embodiments, the control unit 200 further includes a first capacitor C1 and a second capacitor C2.

[0064] A first end of the first capacitor C1 is connected to the gate of the first N-type MOS transistor Q1 , and a second end of the first capacitor C1 is grounded.

[0065] A first end of the second capacitor C2 is connected to the gate of the second N-type MOS transistor Q2 , and a second end of the second capacitor C2 is grounded.

[0066] like Figure 2 As shown, in order to avoid fluctuations in the electrical signal in the circuit, filtering can be performed by the first capacitor C1 and the second capacitor C2 to ensure the stability of the electrical signal, thereby preventing the first N-type MOS transistor Q1 or the second N-type MOS transistor Q2 from being mis-turned on or mis-turned off due to fluctuations in the electrical signal, thereby preventing the electronic device from being mis-started.

[0067] Figure 3A schematic diagram of a control circuit structure of another electronic device and a partial structure of the electronic device provided in an embodiment of the present application. In some embodiments, the control unit 200 includes a third power supply U3, a first P-type MOS transistor Q3, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a third capacitor C3, a fifth diode D5, and a sixth diode D6.

[0068] The cathode of the fifth diode D5 serves as the second end of the control unit 200 and is connected to the CC1 port of the Type-C female port of the electronic device. The cathode of the sixth diode D6 serves as the second end of the control unit 200 and is connected to the CC2 port of the Type-C female port of the electronic device. The anode of the fifth diode D5, the anode of the sixth diode D6, the second end of the sixth resistor R6, the first end of the seventh resistor R7, and the gate of the first P-type MOS transistor Q3 are interconnected.

[0069] The first end of the sixth resistor R6, the first end of the eighth resistor R8, and the third power supply U3 are connected to each other.

[0070] A second terminal of the seventh resistor R7 is grounded.

[0071] The drain of the first P-type MOS transistor Q3 is grounded, and the source of the first P-type MOS transistor Q3 is connected to the second end of the eighth resistor R8 and serves as the first end of the control unit 200 connected to the cathode of the second diode D2.

[0072] A first end of the third capacitor C3 is connected to the gate of the first P-type MOS transistor Q3 , and a second end of the third capacitor C3 is grounded.

[0073] Specifically, the connection relationship of each component is as described above and Figure 3 shown.

[0074] When the CC1 port (and CC2 port) are not connected to an OTG device, the p-node is in a high-level state due to the action of the third power supply U3, so the first P-type MOS tube Q3 is turned off, and the q-node cannot be grounded. Affected by the third power supply U3, the q-node is in a high-level state, and the second diode D2 is not conducting.

[0075] When the CC1 port (or CC2 port) is connected to an OTG device, since the CC1 port is grounded, the p node is in a low level state. At this time, the first P-type MOS tube Q3 is turned on, so the q node is grounded, the q node is in a low level state, and the second diode D2 is turned on, so the power management chip 001 can control the electronic device to start up.

[0076] Continue reading Figure 2 or Figure 3 In some embodiments, a fourth capacitor C4 and a fifth capacitor C5 are also included.

[0077] A first end of the fourth capacitor C4 is connected to the cathode of the second diode D2 , and a second end of the fourth capacitor C4 is grounded.

[0078] A first end of the fifth capacitor C5 is connected to the anode of the second diode D2 , and a second end of the fifth capacitor C5 is grounded.

[0079] by Figure 2 For example, the fourth and fifth capacitors C4 and C5 function similarly to the first and second capacitors C1 and C2, both serving as filters to prevent excessive fluctuations in the electrical signal within the circuit. When the voltage drop across the positive and negative electrodes of the second diode D2 is too large due to large fluctuations in the electrical signal, this can cause the second diode D2 to conduct, potentially causing the power management chip 001 to incorrectly power on the electronic device. This problem can be avoided by providing the fourth and fifth capacitors C4 and C5.

[0080] Continue reading Figure 2 or Figure 3 In some embodiments, the capacitance of the fourth capacitor C4 is greater than the capacitance of the fifth capacitor C5.

[0081] Still Figure 2 For example, since node o is directly connected to the second power supply U2, large fluctuations in node o's voltage may cause the voltage level at node o to be too low, thereby causing the second diode D2 to conduct. This embodiment of the present application allows the capacitance of the fourth capacitor C4 to be larger. Since the fourth capacitor C4 itself has a certain energy storage function, it can release a certain amount of charge when the electrical signal in the circuit fluctuates to ensure that the voltage level at the cathode of the second diode D2 remains stable, thereby preventing the second diode D2 from being mis-conducted and thus preventing the electronic device from starting up inadvertently.

[0082] An embodiment of the present application further provides an electronic device, comprising a control circuit of the electronic device as described in any one of the above control circuit embodiments of the electronic device.

[0083] The electronic device provided in the embodiment of the present application can achieve the same technical effects as the control circuit of the above-mentioned electronic device and solve the same technical problems, which will not be repeated here.

[0084] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0085] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A control circuit of an electronic device, characterized in that: The electronic device includes a first diode, a power management chip, and a charging management chip, wherein the anode of the first diode is connected to the power management chip, the cathode of the first diode is connected to the charging management chip, and the power management chip is used to control the electronic device to start up based on a received low-level signal; The control circuit comprises: a second diode, wherein an anode of the second diode is connected between the anode of the first diode and the power management chip; a control unit, wherein a first end of the control unit is connected to the cathode of the second diode, and a second end of the control unit is connected to a target port in a data transmission interface of the electronic device, wherein the data transmission interface is used to connect to an external data interconnection device; Wherein, when the control unit is connected to the external data interconnection device, the control unit maintains a high level state; when the control unit is not connected to the external data interconnection device, the control unit maintains a low level state.

2. The control circuit of the electronic device according to claim 1, wherein: The second end of the control unit is connected to the CC1 port and the CC2 port of the Type-C female port of the electronic device.

3. The control circuit of the electronic device according to claim 2, wherein: The control unit includes a first power supply, a second power supply, a first N-type MOS transistor, a second N-type MOS transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a third diode and a fourth diode; The cathode of the third diode serves as the second end of the control unit and is connected to the CC1 port of the Type-C female port of the electronic device. The cathode of the fourth diode serves as the second end of the control unit and is connected to the CC2 port of the Type-C female port of the electronic device. The anode of the third diode, the anode of the fourth diode, the second end of the first resistor, the first end of the second resistor, and the gate of the first N-type MOS transistor are interconnected. The first end of the first resistor, the first end of the third resistor, and the first power supply are connected to each other; The second end of the second resistor is grounded; The source of the first N-type MOS transistor is grounded, and the drain of the first N-type MOS transistor, the second end of the third resistor, the first end of the fifth resistor, and the gate of the second N-type MOS transistor are connected to each other; The second end of the fifth resistor is grounded; The source of the second N-type MOS transistor is grounded, the drain of the second N-type MOS transistor is connected to the second end of the fourth resistor and serves as the first end of the control unit and is connected to the cathode of the second diode; The first end of the fourth resistor is connected to the second power supply.

4. The control circuit of the electronic device according to claim 3, wherein: The resistance of the second resistor is higher than the resistance of the first resistor.

5. The control circuit of the electronic device according to claim 3, wherein: The control unit further includes a first capacitor and a second capacitor; A first end of the first capacitor is connected to the gate of the first N-type MOS transistor, and a second end of the first capacitor is grounded; A first end of the second capacitor is connected to the gate of the second N-type MOS transistor, and a second end of the second capacitor is grounded.

6. The control circuit of the electronic device according to claim 2, wherein: The control unit includes a third power supply, a first P-type MOS transistor, a sixth resistor, a seventh resistor, an eighth resistor, a third capacitor, a fifth diode and a sixth diode; The cathode of the fifth diode serves as the second end of the control unit and is connected to the CC1 port of the Type-C female port of the electronic device. The cathode of the sixth diode serves as the second end of the control unit and is connected to the CC2 port of the Type-C female port of the electronic device. The anode of the fifth diode, the anode of the sixth diode, the second end of the sixth resistor, the first end of the seventh resistor, and the gate of the first P-type MOS transistor are interconnected. The first end of the sixth resistor, the first end of the eighth resistor and the third power supply are connected to each other; The second end of the seventh resistor is grounded; The drain of the first P-type MOS transistor is grounded, the source of the first P-type MOS transistor is connected to the second end of the eighth resistor and serves as the first end of the control unit and is connected to the cathode of the second diode; A first end of the third capacitor is connected to the gate of the first P-type MOS transistor, and a second end of the third capacitor is grounded.

7. The control circuit of the electronic device according to claim 3 or 6, characterized in that: Also including a fourth capacitor and a fifth capacitor; A first end of the fourth capacitor is connected to the cathode of the second diode, and a second end of the fourth capacitor is grounded; A first end of the fifth capacitor is connected to the anode of the second diode, and a second end of the fifth capacitor is grounded.

8. The control circuit of the electronic device according to claim 7, characterized in that: The capacitance of the fourth capacitor is greater than the capacitance of the fifth capacitor.

9. An electronic device, characterized in that: A control circuit comprising the electronic device according to any one of claims 1 to 8.

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