Charging control circuit and notebook computer

Abstract

The present application discloses a charging control circuit and a laptop computer. The charging control circuit includes a first selection module, a second selection module, two TYPEC interface modules and two path conduction modules. The second interface selection module outputs a second control signal to the path conduction module corresponding to the target TYPEC interface module, thereby turning on the first switch tube. The first selection module outputs a first control signal to the path conduction module corresponding to the target TYPEC interface module. When the first switch tube is turned on, the second switch tube and the third switch tube are connected to the first control signal, thereby turning on the second switch tube and the third switch tube. When the second switch tube is turned on, the third switch tube is turned on with the corresponding power output end connected to the TYPEC interface module. When the third switch tube is turned on, the battery to be charged is turned on with the second switch tube, thereby turning on the power output end of the target TYPEC interface module and the battery to be charged for charging.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to a charging control circuit and a laptop computer. Background Art

[0002] Laptops are commonly used electronic products for work, life and entertainment. TYPEC interfaces are becoming more and more popular. Mobile phones, tablets, and notebooks all have TYPEC interfaces, and the requirements for universality are getting higher and higher. At the same time, the number of devices with dual TYPEC interfaces is also gradually increasing. When dual TYPEC interfaces are inserted into the corresponding power adapters at the same time, conflicts will occur, the device will not charge, and the device may even be damaged. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a charging control circuit and a laptop computer, which can select a TYPEC interface from two TYPEC interface modules for charging.

[0004] In a first aspect, an embodiment of the present application provides a charging control circuit, including:

[0005] 2 TYPEC interface modules;

[0006] 2 path conduction modules, the path conduction modules correspond one to one with the TYPEC interface modules;

[0007] A first interface selection module, the first interface selection module is connected to each of the TYPEC interface modules respectively, and the first interface selection module is also connected to each of the path conduction modules respectively, the first interface selection module is used to determine a target TYPEC interface module from the two TYPEC interface modules, and output a first control signal to the path conduction module corresponding to the target TYPEC interface module;

[0008] a second interface selection module, the second interface selection module being connected to the first interface selection module, the second interface selection module being connected to each of the path conduction modules, and the second interface selection module being used to output a second control signal to the path conduction module corresponding to the target TYPEC interface module;

[0009] Each of the path conduction modules includes a first switch tube, a second switch tube and a third switch tube, the first switch tube is connected to the first selection module, the second selection module, the second switch tube and the third switch tube respectively, the first switch tube is used to be turned on or off according to the second control signal, and the first switch tube enables the second switch tube and the third switch tube to access the first control signal when the first switch tube is turned on;

[0010] The second switch tube is respectively connected to the third switch tube and the corresponding power output terminal of the TYPEC interface module, and the second switch tube is used to be turned on or off according to the first control signal. When the second switch tube is turned on, the third switch tube is connected to the corresponding power output terminal of the TYPEC interface module;

[0011] The third switch tube is used to connect to the battery to be charged. The third switch tube is used to be turned on or off according to the first control signal. When the third switch tube is turned on, the battery to be charged is connected to the second switch tube.

[0012] According to the charging control circuit of the embodiment of the present application, at least the following beneficial effects are achieved: when two TYPEC interface modules are both connected to an external adapter, the second interface selection module is used to determine the target TYPEC interface module from the two TYPEC interface modules, and output a second control signal to the path conduction module corresponding to the target TYPEC interface module, so that the first switch tube is turned on according to the second control signal, and at the same time, the first selection module outputs a first control signal to the path conduction module corresponding to the target TYPEC interface module, and when the first switch tube is turned on, the second switch tube and the third switch tube are connected to the first control signal, so that the second switch tube and the third switch tube are turned on according to the first control signal, and when the second switch tube is turned on, the third switch tube is turned on with the corresponding power output end connected to the TYPEC interface module, and when the third switch tube is turned on, the battery to be charged is turned on with the second switch tube, so that the power output end of the target TYPEC interface module is turned on with the battery to be charged, so that the target TYPEC interface module can output a voltage to the battery to be charged for charging.

[0013] According to some embodiments of the present application, the gate of the first switch tube is connected to the first selection module, the source of the first switch tube is connected to the second selection module, and the drain of the first switch tube is respectively connected to the gate of the second switch tube and the gate of the third switch tube.

[0014] According to some embodiments of the present application, the drain of the first switch tube is connected to the gate of the second switch tube and the gate of the third switch tube respectively through a first resistor; the source of the second switch tube is connected to the source of the third switch tube, and the source of the third switch tube is connected to the first resistor through a second resistor, and the drain of the second switch tube is connected to the corresponding power output end of the TYPEC interface module.

[0015] According to some embodiments of the present application, the drain of the third switch tube is used to connect to the battery to be charged;

[0016] According to some embodiments of the present application, the resistance of the first resistor is one third of the resistance of the second resistor.

[0017] According to some embodiments of the present application, a first capacitor is further included, and the source of the second switch tube and the source of the third switch tube are also connected to the first resistor through the first capacitor, and the first capacitor is connected in parallel with the second resistor.

[0018] According to some embodiments of the present application, a third resistor is further included, and the gate of the first switch tube is connected to the first selection module through the third resistor.

[0019] According to some embodiments of the present application, a fourth resistor is further included, and the source of the first switch tube is connected to the second selection module through the third resistor.

[0020] According to some embodiments of the present application, a second capacitor is further included, and the drain of the second switch tube and the corresponding power output end of the TYPEC interface module are grounded through the second capacitor.

[0021] In a second aspect, an embodiment of the present application provides a laptop computer, including:

[0022] The charging control circuit as described in any one of the embodiments of the first aspect.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is a structural block diagram of a charging circuit according to an embodiment of the present application;

[0026] Figure 2 A circuit diagram of a first control module according to an embodiment of the present application;

[0027] Figure 3 A circuit diagram of a first control module according to an embodiment of the present application;

[0028] Figure 4 A circuit diagram of a second control module according to an embodiment of the present application;

[0029] Figure 5 A circuit diagram of a TYPEC interface and a corresponding path conduction module according to an embodiment of the present application;

[0030] Figure 6 A circuit diagram of another TYPEC interface and a corresponding path conduction module according to an embodiment of the present application.

[0031] Reference numerals:

[0032] TYPEC interface module 100;

[0033] Path conduction module 200; first switch tube 210; second switch tube 220; third switch tube 230; first resistor 240; second resistor 250; first capacitor 260; second capacitor 270; third resistor 280; fourth resistor 290;

[0034] A first selection module 300;

[0035] The second selection module 400. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0037] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In the description of this application, "several" means more than one, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0040] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0041] First, refer to Figures 1 to 6 , an embodiment of the present application provides a charging control circuit, comprising:

[0042] 2 TYPEC interface modules 100;

[0043] Two path conduction modules 200, the path conduction modules 200 correspond one to one with the TYPEC interface modules 100;

[0044] A first interface selection module, the first interface selection module is connected to each TYPEC interface module 100 respectively, and the first interface selection module is also connected to each path conduction module 200 respectively, and the first interface selection module is used to determine a target TYPEC interface module from two TYPEC interface modules 100, and output a first control signal to the path conduction module 200 corresponding to the target TYPEC interface module;

[0045] A second interface selection module, the second interface selection module is connected to the first interface selection module, the second interface selection module is connected to each path conduction module 200, and the second interface selection module is used to output a second control signal to the path conduction module 200 corresponding to the target TYPEC interface module;

[0046] Each path conduction module 200 includes a first switch tube 210, a second switch tube 220 and a third switch tube 230. The first switch tube 210 is connected to the first selection module 300, the second selection module 400, the second switch tube 220 and the third switch tube 230 respectively. The first switch tube 210 is used to be turned on or off according to the second control signal. When the first switch tube 210 is turned on, the second switch tube 220 and the third switch tube 230 are connected to the first control signal.

[0047] The second switch tube 220 is respectively connected to the third switch tube 230 and the corresponding power output terminal of the TYPEC interface module 100. The second switch tube 220 is used to be turned on or off according to the first control signal. When the second switch tube 220 is turned on, the third switch tube 230 is connected to the corresponding power output terminal of the TYPEC interface module 100.

[0048] The third switch tube 230 is used to connect to the battery to be charged. The third switch tube 230 is used to be turned on or off according to the first control signal. When the third switch tube 230 is turned on, the battery to be charged and the second switch tube 220 are connected.

[0049] It can be understood that when both TYPEC interface modules 100 are connected to the external adapter, the second interface selection module is used to determine the target TYPEC interface module from the two TYPEC interface modules 100, and output the second control signal to the path conduction module 200 corresponding to the target TYPEC interface module, so that the first switch tube 210 is turned on according to the second control signal, and at the same time, the first selection module 300 outputs the first control signal to the path conduction module 200 corresponding to the target TYPEC interface module, and the first switch tube 210 is turned on to make the second switch tube 220 , the third switch tube 230 is connected to the first control signal, so that the second switch tube 220 and the third switch tube 230 are turned on according to the first control signal. When the second switch tube 220 is turned on, the third switch tube 230 is connected to the corresponding power output end of the TYPEC interface module 100. When the third switch tube 230 is turned on, the battery to be charged is connected to the second switch tube 220, so that the power output end of the target TYPEC interface module is connected to the battery to be charged, so that the target TYPEC interface module can output a voltage to the battery to be charged for charging.

[0050] It is worth noting that the charging control circuit of the embodiment of the present application can be applied to electronic devices such as terminals, and the electronic devices are based on the TIGER LAKE processor, for example, a laptop computer, tablet computer or other terminal that uses the TIGER LAKE processor, and the battery to be charged is the battery in the above-mentioned terminal.

[0051] It is worth noting that each path conduction module 200 includes a first switch tube 210 , a second switch tube 220 , and a third switch tube 230 , and each path conduction module 200 does not interfere with each other.

[0052] It can be understood that, in one embodiment, when the first selection module 300 detects that only one TYPEC interface module 100 is connected to the adapter among two TYPEC interface modules 100, the first selection module 300 regards the TYPEC interface module 100 connected to the adapter as the target TYPEC interface module, and sends a first control signal to the first switch tube 210 of the path conduction module 200 corresponding to the target TYPEC interface module; and the second selection module 400 is connected to the first selection module 300, so the second selection module 400 can determine the target TYPEC interface module from the first selection module 300, and then send a second control signal to the first switch tube 210 of the path conduction module 200 corresponding to the target TYPEC interface module.

[0053] It is worth noting that in one embodiment, the first selection module 300300 can determine the target TYPEC interface module from two TYPEC interface modules 100, and output a first control signal to the path conduction module 200 corresponding to the target TYPEC interface module, and the second selection module 400 can output a second control signal to the path conduction module 200 corresponding to the target TYPEC interface module. For example, the priorities of two TYPEC interfaces are set in the first selection module 300. When both TYPEC interfaces are inserted into the adapter, the first selection module 300 uses the TYPEC interface with a higher priority as the target TYPEC interface module, and sends a first control signal to the first switch tube 210 of the path conduction module 200 corresponding to the target TYPEC interface module; and the second selection module 400 is connected to the first selection module 300, so the second selection module 400 can determine the target TYPEC interface module from the first selection module 300. For example, the first selection module 300 stores the relevant information of the TYPEC interface with a higher priority in the register, and the second selection module 400 accesses the register of the first selection module 300, so as to determine the target TYPEC interface module, and then send a second control signal to the first switch tube 210 of the path conduction module 200 corresponding to the target TYPEC interface module 100. It can avoid the situation that when two TYPEC interface modules 100 are both inserted into the adapter, there is a conflict and charging cannot be performed. It should be noted that, in the two TYPEC interface modules 100, those skilled in the art can set the priorities according to actual needs, and the present application does not limit the specific priorities.

[0054] It should be noted that when the TYPEC interface module 100 is inserted into an adapter, the adapter is connected to the mains or other power source, so that the power output end of the TYPEC interface module 100 can output voltage to the battery to be charged for charging.

[0055] It can be understood that the gate of the first switch tube 210 is connected to the first selection module 300, the source of the first switch tube 210 is connected to the second selection module 400, and the drain of the first switch tube 210 is connected to the gate of the second switch tube 220 and the gate of the third switch tube 230 respectively.

[0056] It can be understood that the drain of the first switch tube 210 is connected to the gate of the second switch tube 220 and the gate of the third switch tube 230 respectively through the first resistor 240; the source of the second switch tube 220 is connected to the source of the third switch tube 230, and the source of the third switch tube 230 is connected to the first resistor 240 through the second resistor 250, and the drain of the second switch tube 220 is connected to the power output end of the corresponding TYPEC interface module 100.

[0057] It can be understood that the drain of the third switch tube 230 is used to connect to the battery to be charged;

[0058] It is understandable that the resistance of the first resistor 240 is one third of the resistance of the second resistor 250. For example, the resistance of the first resistor 240 may be 100 kΩ, and the resistance of the second resistor 250 may be 300 kΩ.

[0059] It can be understood that a first capacitor 260 is also included, and the source of the second switch tube 220 and the source of the third switch tube 230 are also connected to the first resistor 240 through the first capacitor 260, and the first capacitor 260 is connected in parallel with the second resistor 250.

[0060] It can be understood that a third resistor 280 is further included, and the gate of the first switch tube 210 is connected to the first selection module 300 via the third resistor 280 .

[0061] It can be understood that a fourth resistor 290 is further included, and the source of the first switch tube 210 is connected to the second selection module 400 through the third resistor 280 .

[0062] It can be understood that a second capacitor 270 is further included, and the drain of the second switch tube 220 and the corresponding power output terminal of the TYPEC interface module 100 are grounded through the second capacitor 270 .

[0063] Specifically, refer to Figures 2 to 6 , showing a specific embodiment of the present application. The charging control circuit includes two TYPEC interfaces, namely JTYPEC_B interface and JTYPEC_A interface. The first selection module 300 includes two chips of model CYPD5225; the second selection module 400 uses a chip of model IT5570 LQFP. Figure 2 is a schematic diagram of a circuit of the first selection module 300 and some peripheral circuits; Figure 3 It is also a schematic diagram of the circuit of the first selection module 300 and some peripheral circuits of the embodiment of the present application; Figure 4 is a schematic diagram of a circuit of the second selection module 400 and some peripheral circuits; Figure 5 It is a circuit diagram of a TYPEC interface and a corresponding path conduction module 200; Figure 6 FIG. 2 is a circuit diagram of another TYPEC interface and a corresponding path conducting module 200 .

[0064] Reference Figure 5 , when the first selection module 300 determines that the JTYPEC_A interface is the target TYPEC interface module according to the preset priority rule, that is, it is determined to charge through the JTYPEC_A interface, and the JTYPEC_A interface is plugged into the adapter, CC1 and CC2 communications are established between the JTYPEC_A interface and the first selection module 300, and the output voltage of the JTYPEC_A interface can be increased from 5V to 20V, that is, the voltage of the voltage VBUS_TYPEC_A is increased from 5V to 20V, and then the first selection module 300 sends a first control signal to the gate of the first switch tube 210 of the corresponding path conduction module 200, and the first control signal is high level, Figure 5 In the example, the first control signal is the signal TYPEC_PWR_EN_A; the second selection module 400 reads from the register of the first control module that the target TYPEC interface module is the JTYPEC_A interface, therefore, the second selection module 400 sends a second control signal to the source of the first switch tube 210 of the corresponding path conduction module 200, and the second control signal is at a low level. Figure 5In the embodiment, the second control signal is the signal VBUS_C_CTRL_N_A. Since the signal TYPEC_PWR_EN_A is at a high level, the first switch tube 210 is turned on, and since VBUS_C_CTRL_N_A is at a low level, the drain and source of the first switch tube 210 are both at a low level, so one end of the first resistor 240 is at a low level, and the other end of the first resistor 240 is at a low level because the first resistor 240 and the second resistor 250 divide the voltage VBUS_TYPEC_A, and the resistance value of the first resistor 240 is 100kΩ, the resistance value of the second resistor 250 is 300kΩ, and the voltage VBUS_TYPEC_A is 20V, so the first resistor 240 is at a low level. The voltage at the other end of 0 is 5V, that is, the gate of the second switch tube 220 and the gate of the third switch tube 230 are both 5V, and the source of the second switch tube 220 is connected to the voltage VBUS_TYPEC_A, so the VGS of the second switch tube 220 is -15V, so the second switch tube 220 is turned on. When the second switch tube 220 is turned on, the source of the third switch tube 230 is connected to the voltage VBUS_TYPEC_A, that is, the VGS of the third switch tube 230 is also -15V, so the third switch tube 230 is also turned on, so that the battery to be charged is connected to the voltage VBUS_TYPEC_A for charging.

[0065] Reference Figure 6 , when the first selection module 300 determines that the JTYPEC_B interface is the target TYPEC interface module according to the preset priority rule, that is, it is determined to charge through the JTYPEC_B interface, and the JTYPEC_B interface is plugged into the adapter, then CC1 and CC2 communications are established between the JTYPEC_B interface and the first selection module 300, which can increase the output voltage of the JTYPEC_B interface from 5V to 20V, that is, the voltage of the voltage VBUS_TYPEC_B is increased from 5V to 20V, and then the first selection module 300 sends a first control signal to the gate of the first switch tube 210 of the corresponding path conduction module 200, and the first control signal is high level, Figure 5 In the example, the first control signal is the signal TYPEC_PWR_EN_B; the second selection module 400 reads from the register of the first control module that the target TYPEC interface module is the JTYPEC_B interface, therefore, the second selection module 400 sends a second control signal to the source of the first switch tube 210 of the corresponding path conduction module 200, and the second control signal is at a low level. Figure 5In the embodiment, the second control signal is the signal VBUS_C_CTRL_N_B. Since the signal TYPEC_PWR_EN_B is at a high level, the first switch tube 210 is turned on, and since VBUS_C_CTRL_N_B is at a low level, the drain and source of the first switch tube 210 are both at a low level, so one end of the first resistor 240 is at a low level, and the other end of the first resistor 240 is at a low level because the first resistor 240 and the second resistor 250 divide the voltage VBUS_TYPEC_B, and the resistance of the first resistor 240 is 100kΩ, the resistance of the second resistor 250 is 300kΩ, and the voltage VBUS_TYPEC_B is 20V, so the first resistor 240 is at a low level. The voltage at the other end of 0 is 5V, that is, the gate of the second switch tube 220 and the gate of the third switch tube 230 are both 5V, and the source of the second switch tube 220 is connected to the voltage VBUS_TYPEC_B, so the VGS of the second switch tube 220 is -15V, so the second switch tube 220 is turned on. When the second switch tube 220 is turned on, the source of the third switch tube 230 is connected to the voltage VBUS_TYPEC_B, that is, the VGS of the third switch tube 230 is also -15V, so the third switch tube 230 is also turned on, so that the battery to be charged is connected to the voltage VBUS_TYPEC_B for charging.

[0066] It should be noted that CC1 and CC2 communication refers to the connection between CC1 pin and CC2 pin, which is a public and common technology in the field of TYPEC interface charging, and the embodiments of the present application will not go into details.

[0067] It is worth noting that the first switch tube 210 is a low-current MOS tube, such as a 2SK3019_SOT523 MOS tube, while the second switch tube 220 and the third switch tube 230 are high-current MOS tubes, such as a LCC8_P65MM_SQ3MM_FET MOS tube.

[0068] In a second aspect, an embodiment of the present application provides a laptop computer, including:

[0069] The charging control circuit as described in any one of the embodiments of the first aspect.

[0070] Since the laptop computer includes the charging control circuit described in any one of the embodiments of the first aspect, all the embodiments mentioned in the first aspect are applicable to the laptop computer and have the same effects, and are not described in detail here.

[0071] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A charging control circuit, characterized in that: include: 2 TYPEC interface modules; 2 path conduction modules, the path conduction modules correspond one to one with the TYPEC interface modules; A first interface selection module, the first interface selection module is connected to each of the TYPEC interface modules respectively, and the first interface selection module is also connected to each of the path conduction modules respectively, the first interface selection module is used to determine a target TYPEC interface module from the two TYPEC interface modules, and output a first control signal to the path conduction module corresponding to the target TYPEC interface module; a second interface selection module, the second interface selection module being connected to the first interface selection module, the second interface selection module being connected to each of the path conduction modules, and the second interface selection module being used to output a second control signal to the path conduction module corresponding to the target TYPEC interface module; Each of the path conduction modules includes a first switch tube, a second switch tube and a third switch tube, the first switch tube is connected to the first interface selection module, the second interface selection module, the second switch tube and the third switch tube respectively, the first switch tube is used to be turned on or off according to the second control signal, and the first switch tube enables the second switch tube and the third switch tube to access the first control signal when the first switch tube is turned on; The second switch tube is respectively connected to the third switch tube and the corresponding power output terminal of the TYPEC interface module, and the second switch tube is used to be turned on or off according to the first control signal. When the second switch tube is turned on, the third switch tube is connected to the corresponding power output terminal of the TYPEC interface module; The third switch tube is used to connect to the battery to be charged, and the third switch tube is used to be turned on or off according to the first control signal. When the third switch tube is turned on, the battery to be charged is connected to the second switch tube; The gate of the first switch tube is connected to the first interface selection module, the source of the first switch tube is connected to the second interface selection module, and the drain of the first switch tube is connected to the gate of the second switch tube and the gate of the third switch tube respectively; The drain of the first switch tube is connected to the gate of the second switch tube and the gate of the third switch tube respectively through a first resistor; the source of the second switch tube is connected to the source of the third switch tube, and the source of the third switch tube is connected to the first resistor through a second resistor, and the drain of the second switch tube is connected to the corresponding power output end of the TYPEC interface module.

2. The charging control circuit according to claim 1, characterized in that: The drain of the third switch tube is used to connect to the battery to be charged.

3. The charging control circuit according to claim 1, characterized in that: The resistance value of the first resistor is one third of the resistance value of the second resistor.

4. The charging control circuit according to claim 1, characterized in that: It also includes a first capacitor, and the source of the second switch tube and the source of the third switch tube are connected to the first resistor through the first capacitor, and the first capacitor is connected in parallel with the second resistor.

5. The charging control circuit according to claim 1, characterized in that: A third resistor is also included, and the gate of the first switch tube is connected to the first selection module through the third resistor.

6. The charging control circuit according to claim 1, characterized in that: A fourth resistor is also included, and the source of the first switch tube is connected to the second selection module through the third resistor.

7. The charging control circuit according to claim 1, characterized in that: It also includes a second capacitor, and the drain of the second switch tube is grounded to the corresponding power output end of the TYPEC interface module through the second capacitor.

8. A notebook computer, characterized in that: include: A charging control circuit as claimed in any one of claims 1 to 7.

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