DC and TYPE-C power supply switching control circuit and device

Abstract

The utility model relates to a DC and TYPE-C power supply switching control circuit and device. The circuit comprises a TYPE-C module, a DC module, a power transmission module, a load switch, a continuous power supply module, a switch tube module and a system power supply. The input end of the TYPE-C module is connected with the power transmission module, and the power transmission module is further connected with the load switch and the switch tube module. The load switch is further connected with the output end of the TYPE-C module and the continuous power supply module. The switch tube module is further connected with a system power supply. The input end of the DC module is also connected with the system power supply; according to the power supply switching scheme, DC and TYPE-C power supply switching operation can be flexibly and effectively realized, the problems of power signal abnormity and power supply abnormity during power supply switching which are easy to occur during power-on and power-off can be solved, various adapters do not need to be configured, and multi-scene application is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to mobile PC power supply technical field more specifically, relate to a DC and TYPE C power supply switching control circuit and device. BACKGROUND

[0002] With the increasing social demand and the continuous development and innovation of PC computer technology, the use of mobile PC computer is more and more convenient to cope with different use scenarios. Most of the existing mobile PC computers only support one power supply mode, such as DC / PD, in some subsequent improvements, on the basis of DC / PD power supply mode, some mobile PC computers can still support TYPE-C / PD power supply mode, but DC / PD and TYPE-C / PD power supply modes cannot be effectively switched when used in mobile PC computer, there are power supply design and timing verification problems. For example, when designing the power supply circuit, the switch-off time, power-down timing and back-end load are not paid attention to, which may cause power-down during booting and restarting, resulting in power supply signal abnormality during power-up and power-down and power supply abnormality during power supply switching. Moreover, due to the insufficient design of the existing power supply circuit, the power supply mode cannot be effectively switched, and the mobile PC computer is not convenient for multiple scene use, because it is usually necessary to carry multiple adapters, which are heavy and complicated, not simple to use, and the user experience is not good. SUMMARY

[0003] The utility model solves the technical problem in that, in view of the above defects of prior art, a DC and TYPE-C power supply switching control circuit and device are provided.

[0004] The utility model adopts the technical scheme to solve the technical problem thereof:

[0005] On the one hand, the utility model provides a DC and TYPE-C power supply switching control circuit, the circuit includes TYPE-C module, DC module, power transmission module, load switch, continuous power supply module, switch tube module and system power supply, the input end of TYPE-C module is connected with power transmission module, power transmission module is connected with load switch and switch tube module respectively, load switch is connected with the output end of TYPE-C module and continuous power supply module respectively, switch tube module is connected with system power supply, the input end of DC module is also connected with system power supply.

[0006] In some embodiments, the circuit further comprises a first diode, one end of the first diode is connected with the input end of TYPE-C module, and the other end of the first diode is connected with the switch tube module.

[0007] In some embodiments, the circuit further comprises a second diode, one end of the second diode is connected with the input end of the DC module, and the other end of the second diode is connected with the system power supply.

[0008] In some embodiments, the power transmission module comprises a power transmission chip, the power transmission chip is connected with the input end of the TYPE-C module, the load switch and the switch tube module respectively.

[0009] In some embodiments, the switch tube module comprises a MOS switch tube, the MOS switch tube is connected with the power transmission chip and the system power supply respectively.

[0010] In some embodiments, the MOS switch tube is a P-type MOS tube.

[0011] In some embodiments, the load voltage of the load switch is 5V.

[0012] In some embodiments, the power supply voltage of the continuous power supply module is 5V.

[0013] In some embodiments, the output voltage of the output end of the TYPE-C module is 5V.

[0014] In another aspect, the utility model also provides a DC and TYPE-C power supply switching control device, including the DC and TYPE-C power supply switching control circuit as any above.

[0015] The utility model has the advantages that, different from the prior art, when the external power supply equipment is connected, the DC and TYPE-C power supply switching control circuit of the utility model can input the power supply of the external power supply equipment to the system power supply through the input end of the TYPE-C module, the power transmission module and the switch tube module, when there is no external power supply equipment, the system power supply is directly powered by the DC module, when the inserted external equipment is a device that needs power supply, the continuous power supply module, the load switch and the output end of the TYPE-C module are used to output power supply for the device, DC and TYPE-C power supply switching operation can be effectively realized, different power supply requirements can be met, power supply abnormalities during power-on and power-off and power supply abnormalities during power supply switching can be effectively solved, multiple adapters need not be configured, and the utility model is suitable for multiple scene applications. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the principle block diagram of the DC and TYPE-C power supply switching control circuit in the utility model embodiment;

[0017] Figure 2 It is the working flow chart of the DC and TYPE-C power supply switching control circuit in the utility model embodiment;

[0018] Marked name and serial number in the figure: TYPE-C module-1;DC module-2;Power transmission module-3;Load switch-4;Continuous power supply module-5;Switching tube module-6;System power supply-7;First diode-8;Second diode-9. DETAILED DESCRIPTION

[0019] The terms "first", "second", "third", and "fourth" and the like in the description and in the claims of the present application and the accompanying drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. The terms "comprises", "comprising", "includes", "including" and the like are to be construed open-ended, allowing for instances where there are equivalents to processes, methods, systems, products, or devices that do not literally include the recited steps or elements, but are otherwise equivalent in function, result, or effect. The terms "about" and "substantially" are used to describe a situation that is not perfect, but is close to being perfect.

[0020] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0021] "Multiple" means two or more. "And / or", describing the relationship between the associated objects, means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents that the associated objects before and after are a "or" relationship.

[0022] Furthermore, the terms "upper", "lower", "front", "back", "left", "right", "upper end", "lower end", and the like indicating the orientation are all with reference to the attitude position of the device or equipment described in the present scheme in normal use.

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, not all. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0024] Embodiment one: the embodiment of the present application provides a DC and TYPE-C power supply switching control circuit, such as Figure 1As shown in the figure, the DC and TYPE-C power supply switching control circuit comprises a TYPE-C module 1, a DC module 2, a power transmission module 3, a load switch 4, a continuous power supply module 5, a switch tube module 6 and a system power supply 7; the input end of the TYPE-C module 1 is connected with the power transmission module 3, and the power transmission module 3 is further connected with the load switch 4 and the switch tube module 6 respectively; the load switch 4 is further connected with the output end of the TYPE-C module 1 and the continuous power supply module 5 respectively, and the switch tube module 6 is further connected with the system power supply 7; and the input end of the DC module 2 is also connected with the system power supply 7.

[0025] The DC and TYPE-C power supply switching control circuit in the embodiment of the utility model, when the external power supply equipment, through the TYPE-C module 1's input end, power transmission module 3 and switch tube module 6, the power supply of external power supply equipment is given to system power supply 7, when no external power supply equipment, then through DC module 2 directly to system power supply 7 power supply, when the external equipment of insertion is the equipment that needs to supply power, through continuous power supply module 5, load switch 4 and the output end of TYPE-C module 1 output for its power supply.

[0026] Specifically, in the embodiment, the DC and TYPE-C power supply switching control circuit further comprises a first diode 8, one end of the first diode 8 is connected with the input end of the TYPE-C module 1, and the other end of the first diode 8 is connected with the switch tube module 6. Further, the DC and TYPE-C power supply switching control circuit further comprises a second diode 9, one end of the second diode 9 is connected with the input end of the DC module 2, and the other end of the second diode 9 is connected with the system power supply 7. The first diode 8 and the second diode 9 are arranged because there is a voltage difference between the two power supplies. This arrangement can prevent voltage and current from flowing backward and avoid affecting the power supply and preventing the circuit from being burned out. In combination with the working principle of the diode and the attached Figure 2 As shown in the figure, it can be understood that one end of the first diode 8 is the positive electrode of the first diode 8, and the other end of the first diode 8 is the negative electrode of the first diode 8. Similarly, one end of the second diode 9 is the positive electrode of the second diode 9, and the other end of the second diode 9 is the negative electrode of the second diode 9.

[0027] Specifically, in the embodiment, the power transmission module 3 comprises a power transmission chip (PD IC), and the power transmission chip (PD IC) is connected with the input end of the TYPE-C module 1, the load switch 4 and the switch tube module 6 respectively. The voltage input is controlled through the power transmission chip (PD IC). When the continuous power supply module 5 keeps continuous power supply, the output of the voltage is controlled through the load switch 4. Among them, the load voltage of the load switch 4 is 5V; the power supply voltage of the continuous power supply module 5 is 5V; and the output voltage of the output end of the TYPE-C module is 5V.

[0028] Specifically, in the embodiment, the switch tube module 6 includes MOS switch tubes, the MOS switch tubes are connected with a power transmission chip (PD IC) and a system power supply 7 respectively, and after the MOS switch tubes are turned on, an external power supply device can supply power to the system power supply 7 through an input end of the TYPE-C module 1. The MOS switch tubes are P-type MOS tubes.

[0029] The working principle of the DC and TYPE-C power supply switching control circuit in the specific implementation is described below in combination with the content of the above embodiment one, please refer to the attached Figure 2

[0030] 5V OUT is an output end of the TYPE-C module 1, an input end (TYPE-C IN) of the TYPE-C module 1 is connected with the power transmission chip (PD IC) through CC1 and CC2 pins, when an external plug-in device is a device requiring power supply, the SOURCE CTRL is high, and the continuous power supply module 5 provides a power supply output 5V.

[0031] When there is no TYPE-C power supply, the DC IN adapter supplies power 19V to the system power supply 7 through an input end (DC IN) of the DC module 2; when the external power supply device is plugged into the input end (TYPE-C IN) of the TYPE-C module 1, the TYPE-C module 1 communicates with the power supply device, when there is TYPE-C power supply, the voltage is started to be boosted, the SOURCE SENSE starts to detect the allowed 20V boost, the discharge function of the power transmission chip (PD IC) is involved, and the influence on power-on when plugging is prevented; the SINK CTRL is pulled down, the P-type MOS tube in it does not pull down the TYPE-C POWER, the P-type MOS tube is turned on, thereby realizing power supply to the system power supply 7.

[0032] It should be noted that since there is a pressure difference between 20V and 19V, when the power supply device and the DC IN adapter are connected at the same time, the TYPE-C POWER is mainly used for power supply.

[0033] It should be noted that the specific circuit layout of each module can be designed and selected according to actual application requirements, and in the embodiment, the specific circuit layout of each module is not limited.

[0034] Embodiment two: the utility model embodiment provides a DC and TYPE-C power supply switching control device, the DC and TYPE-C power supply switching control device includes the DC and TYPE-C power supply switching control circuit provided in embodiment one. Wherein, the description of the DC and TYPE-C power supply switching control circuit is referred to embodiment one, and details are not repeated here.

[0035] ​It should be understood that modifications or variations can be made to the above described embodiments by those of ordinary skill in the art, and that all such modifications and variations are intended to be within the scope of the present application as defined by the following claims.

Claims

1. A DC and TYPE-C power supply switching control circuit, characterized in that: The circuit includes a TYPE-C module, a DC module, a power transmission module, a load switch, a continuous power supply module, a switching transistor module, and a system power supply. The input terminal of the TYPE-C module is connected to the power transmission module, and the power transmission module is also connected to the load switch and the switching transistor module. The load switch is also connected to the output terminal of the TYPE-C module and the continuous power supply module, and the switching transistor module is also connected to the system power supply. The input terminal of the DC module is also connected to the system power supply.

2. The DC and TYPE-C power supply switching control circuit according to claim 1, characterized in that: The circuit also includes a first diode, one end of which is connected to the input terminal of the TYPE-C module, and the other end of which is connected to the switching transistor module.

3. The DC and TYPE-C power supply switching control circuit according to claim 1, characterized in that: The circuit also includes a second diode, one end of which is connected to the input terminal of the DC module, and the other end of which is connected to the system power supply.

4. The DC and TYPE-C power supply switching control circuit according to claim 1, characterized in that: The power transmission module includes a power transmission chip, which is connected to the input terminal of the TYPE-C module, the load switch, and the switching transistor module, respectively.

5. The DC and TYPE-C power supply switching control circuit according to claim 4, characterized in that: The switching module includes MOS switching transistors, which are connected to the power transmission chip and the system power supply, respectively.

6. The DC and TYPE-C power supply switching control circuit according to claim 5, characterized in that: The MOS switch is a P-type MOS transistor.

7. The DC and TYPE-C power supply switching control circuit according to any one of claims 1-6, characterized in that: The load voltage of the load switch is 5V.

8. The DC and TYPE-C power supply switching control circuit according to any one of claims 1-6, characterized in that: The power supply voltage of the continuous power supply module is 5V.

9. The DC and TYPE-C power supply switching control circuit according to any one of claims 1-6, characterized in that: The output voltage of the TYPE-C module is 5V.

10. A DC and TYPE-C power supply switching control device, characterized in that: Includes the DC and TYPE-C power supply switching control circuit as described in any one of claims 1-9.

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