Discharging circuit

Abstract

The utility model discloses a discharging circuit, and the circuit comprises a discharging module which comprises a discharging resistor and a first controllable switch. One end of the discharge resistor is connected with a to-be-discharged power supply, and the other end is connected with the input end of the first controllable switch; the output end of the first controllable switch is grounded; and the output end of the control module is connected with the control end of the first controllable switch, and the control module is used for controlling the first controllable switch to be switched on and switched off so as to control the power supply to be discharged to discharge through the discharge resistor. Thus, the dischargeable circuit is arranged outside the to-be-discharged power supply, the discharge time of the to-be-discharged power supply can be adjusted by adjusting the size of the discharge resistor in the discharge circuit in real time, and the actual demand of a user for the discharge time of the to-be-discharged power supply is met.

Description

Technical Field

[0001] This application relates to the field of power supply discharge technology, and in particular to a discharge circuit. Background Technology

[0002] Currently, the most common method for fast power supply discharge technology relies on the power supply's built-in discharge resistor. However, since the resistance value of the power supply's built-in discharge resistor is fixed, the discharge time cannot be adjusted according to actual conditions. Utility Model Content

[0003] In view of this, embodiments of this application provide a discharge circuit.

[0004] This application provides a discharge circuit, including:

[0005] The discharge module includes a discharge resistor and a first controllable switch; one end of the discharge resistor is connected to the power supply to be discharged, and the other end is connected to the input terminal of the first controllable switch; the output terminal of the first controllable switch is grounded.

[0006] The control module has its output connected to the control terminal of the first controllable switch, and is used to control the first controllable switch to turn on and off, so as to control the power supply to be discharged to discharge through the discharge resistor.

[0007] Optionally, there may be multiple discharge resistors connected in parallel.

[0008] Optionally, there may be multiple discharge modules, each of which is used to connect to a power source to be discharged.

[0009] Optionally, the control module has multiple output terminals, and each output terminal of the control module is connected to at least one discharge module.

[0010] Optionally, the discharge circuit further includes:

[0011] The logic control module is located between the output terminal of the control module and the control terminal of the first controllable switch. It is used to output a low-level signal when the control module outputs a high-level signal to control the first controllable switch to be turned on, and to output a high-level signal when the control module outputs a low-level signal to control the first controllable switch to be turned off.

[0012] Optionally, the logic control module includes: a first resistor, a second resistor, a third resistor, a fourth resistor, a capacitor, and a second controllable switch;

[0013] The first end of the first resistor is connected to the target power supply, and the second end is connected to the input end of the second controllable switch. The capacitor is connected in parallel with the first resistor. The control end of the second controllable switch is connected to the output end of the control module through the second resistor and grounded through the third resistor. The output end of the second controllable switch is grounded. The control end of the second controllable switch is grounded through the fourth resistor.

[0014] Optionally, the discharge circuit further includes:

[0015] The target power supply is connected to the control module and is used to power the control module.

[0016] Optionally, the control module is also used to control the on-time and off-time of the first controllable switch to control the discharge time of the power supply to be discharged.

[0017] Optionally, the first controllable switch is a MOSFET.

[0018] The discharge circuit provided in this embodiment includes a discharge module and a control module. The discharge module includes a discharge resistor and a first controllable switch. One end of the discharge resistor is connected to the power supply to be discharged, and the other end is connected to the input terminal of the first controllable switch. The output terminal of the first controllable switch is grounded. The output terminal of the control module is connected to the control terminal of the first controllable switch to control the switching on and off of the first controllable switch, thereby controlling the power supply to be discharged to discharge through the discharge resistor. In this way, the discharge circuit is located outside the power supply to be discharged, and the discharge time of the power supply to be discharged can be adjusted by adjusting the size of the discharge resistor in the discharge circuit in real time, meeting the user's actual needs for the discharge time of the power supply to be discharged. Furthermore, the discharge circuit can adapt to the discharge of different power supplies, reducing the user's requirements for power supply selection. Moreover, since the discharge circuit includes a control module to control the switching on and off of the first controllable switch, the first controllable switch can be kept off when the power supply to be discharged is working normally, so that the discharge circuit will not discharge the power supply to be discharged when the power supply to be discharged is working normally, thereby reducing the additional power consumption of the power supply to be discharged.

[0019] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a discharge circuit in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of another discharge circuit in an embodiment of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] This application provides a discharge circuit, such as... Figure 1 As shown, it includes:

[0024] The discharge module 11 includes a discharge resistor 111 and a first controllable switch 112. One end of the discharge resistor 111 is connected to the power supply to be discharged, and the other end is connected to the input terminal of the first controllable switch 112. The output terminal of the first controllable switch 112 is grounded.

[0025] The control module 12 has its output terminal connected to the control terminal of the first controllable switch 112. It is used to control the first controllable switch 112 to turn on and off, so as to control the power supply to be discharged to discharge through the discharge resistor.

[0026] In this embodiment, as Figure 1 As shown, the control module 12 can be a microcontroller unit (MCU).

[0027] In some embodiments, such as Figure 1 As shown, the first controllable switch 112 can be a MOSFET.

[0028] In some embodiments, the control module 12 is further configured to control the on-time and off-time of the first controllable switch 112 to control the discharge time of the power supply to be discharged. This allows for flexible control of the discharge time of the power supply to be discharged.

[0029] In some embodiments, such as Figure 1 As shown, there are multiple discharge resistors 111 connected in parallel.

[0030] In specific implementation, such as Figure 1 As shown, the discharge module 11 may include multiple discharge resistors 111 connected in parallel, such as R1, R2, and R3 connected in parallel, forming a discharge resistor for the power supply VSYS-4.4V to be discharged. Thus, by setting multiple discharge resistors in parallel in the discharge module, the discharge resistor can be protected, preventing it from being damaged.

[0031] In this embodiment, when the power supply to be discharged needs to be discharged, the control module 12 can control the first controllable switch 112 to be turned on, so that the power supply to be discharged is grounded through the discharge resistor and discharged. The discharge duration of the power supply to be discharged can be adjusted by adjusting the resistance value of the discharge resistor.

[0032] In this embodiment, when the power supply to be discharged is working, or when it is not necessary to discharge, the first controllable switch 112 can be turned off by the control module 12, so that the power supply to be discharged cannot be grounded through the discharge resistor and the power supply to be discharged cannot discharge.

[0033] In this embodiment, the discharge sequence of the power supply to be discharged can be set in the control module 12, so that the control module 12 can control the opening and closing of the first controllable switch 12 based on the discharge sequence of the power supply to be discharged, so that the control module can automatically discharge the power supply to be discharged according to the discharge sequence of the power supply to be discharged.

[0034] The discharge circuit provided in this embodiment includes a discharge module and a control module. The discharge module includes a discharge resistor and a first controllable switch. One end of the discharge resistor is connected to the power supply to be discharged, and the other end is connected to the input terminal of the first controllable switch. The output terminal of the first controllable switch is grounded. The output terminal of the control module is connected to the control terminal of the first controllable switch to control the switching on and off of the first controllable switch, thereby controlling the power supply to be discharged to discharge through the discharge resistor. In this way, the discharge circuit is located outside the power supply to be discharged, and the discharge time of the power supply to be discharged can be adjusted by adjusting the size of the discharge resistor in the discharge circuit in real time, meeting the user's actual needs for the discharge time of the power supply to be discharged. Furthermore, the discharge circuit can adapt to the discharge of different power supplies, reducing the user's requirements for power supply selection. Moreover, since the discharge circuit includes a control module to control the switching on and off of the first controllable switch, the first controllable switch can be kept off when the power supply to be discharged is working normally, so that the discharge circuit will not discharge the power supply to be discharged when the power supply to be discharged is working normally, thereby reducing the additional power consumption of the power supply to be discharged.

[0035] In an optional embodiment, such as Figure 2 As shown, the discharge circuit also includes:

[0036] The target power supply 14 is connected to the control module 12 and is used to supply power to the control module 12.

[0037] In an optional embodiment, such as Figure 2 As shown, the discharge circuit also includes:

[0038] The logic control module 13 is located between the output terminal of the control module 12 and the control terminal of the first controllable switch 112. When the control module 12 outputs a high-level signal, it outputs a low-level signal to control the first controllable switch 112 to be turned on; when the control module 12 outputs a low-level signal, it outputs a high-level signal to control the first controllable switch 112 to be turned off.

[0039] In specific implementation, the logic control module 13, as follows: Figure 2 As shown, it includes: a first resistor 131, a second resistor 132, a third resistor 133, a fourth resistor 134, a capacitor 135, and a second controllable switch 136.

[0040] The first terminal of the first resistor 131 is used to connect to the target power supply 14. Figure 2 The example is shown as follows: connected to MCU-3.3V, the second terminal is connected to the input terminal of the second controllable switch 136, and the capacitor 135 is connected in parallel with the first resistor 131; the control terminal of the second controllable switch 136 is connected to the output terminal of the control module 12 through the second resistor 132, and grounded through the third resistor 133; the output terminal of the second controllable switch 136 is grounded; the control terminal of the second controllable switch 136 is grounded through the fourth resistor 134.

[0041] In this embodiment, by setting the logic control module 13, when the control module 12 outputs a high-level signal, the first controllable switch 112 is turned on, and the power supply to be discharged discharges; when the control module 12 outputs a low-level signal, the first controllable switch 112 is turned off, and the power supply to be discharged does not discharge. This is more in line with the user's usage habits and can improve the user experience.

[0042] In an optional embodiment, such as Figure 2 As shown, there are multiple discharge modules 11, and each discharge module 11 is used to connect to a power supply to be discharged.

[0043] In this embodiment, if it is necessary to discharge multiple power supplies, such as multiple power supplies on a circuit board, the discharge circuit can be designed to include multiple discharge modules 11, each of which is connected to the control module 12. Each discharge module 11 is used to connect to one power supply circuit. In this way, multiple power supplies can be discharged through a single discharge circuit.

[0044] For example, such as Figure 2As shown, the power supplies to be discharged include VSYS-4.4V, SOC-3.3V, SOC-1.8V, and SOC-1.1V. Each power supply to be discharged has a corresponding discharge module. Each discharge module can contain multiple discharge resistors. For example, R1, R2, and R3 are connected in parallel to form a discharge resistor for the VSYS-4.4V power supply; R4, R5, and R6 are connected in parallel to form a discharge resistor for the SOC-3.3V power supply; R7, R8, and R9 are connected in parallel to form a discharge resistor for the SOC-1.8V power supply; and R10, R11, and R12 are connected in parallel to form a discharge resistor for the SOC-1.1V power supply.

[0045] In some embodiments, such as Figure 2 As shown, the control module 12 may have multiple output terminals, and each output terminal of the control module 12 is connected to at least one discharge module 11.

[0046] In practical implementation, the discharge module 11 corresponding to the power supply to be discharged with the same discharge time can be connected to the same output terminal of the control module 12, for example, such as Figure 2 As shown, the discharge modules corresponding to the power supplies VSYS-4.4V and SOC-3.3V can each be connected to a logic control module 13. This logic control module 13 is connected to the output terminal VSYS_4V 4_EN of the control module 12, thus connecting the output terminal VSYS_4V 4_EN of the control module 12 to two discharge modules 11. Similarly, the discharge modules corresponding to the power supplies SOC-1.8V and SOC-1.1V can each be connected to another logic control module. This logic control module is connected to the output terminal SOC_1V 8_EN of the control module 12, thus connecting the output terminal SOC_1V 8_EN of the control module 12 to two discharge modules. This facilitates control of the discharge time of the power supplies and allows control of multiple discharge modules through a single output terminal.

[0047] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0048] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] The terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention. When an element such as a layer, film, region, or substrate is referred to as being located “above” or “below” another element, the element may be located “directly” above or below the other element, or there may be intermediate elements present.

[0050] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A discharge circuit, characterized by comprising: The application relates to a power supply discharging device. The discharging module comprises a discharging resistor and a first controllable switch. One end of the discharging resistor is connected with a power supply to be discharged, and the other end is connected with the input end of the first controllable switch; the output end of the first controllable switch is connected with the ground. The control module is connected with the control end of the first controllable switch, and is used for controlling the conduction and disconnection of the first controllable switch, so as to control the power supply to be discharged to discharge through the discharging resistor.

2. The discharge circuit according to claim 1, characterized by The number of the discharging resistors is plural, and the plural discharging resistors are connected in parallel.

3. The discharge circuit of claim 1, wherein The number of the discharging modules is plural, and each discharging module is connected with one power supply to be discharged.

4. The discharge circuit of claim 3, wherein The number of the output ends of the control module is plural, and each output end of the control module is connected with at least one discharging module.

5. The discharge circuit of claim 1, wherein The application further comprises: The logic control module is arranged between the output end of the control module and the control end of the first controllable switch, and is used for outputting a low-level signal when the control module outputs a high-level signal, so as to control the conduction of the first controllable switch; and outputting a high-level signal when the control module outputs a low-level signal, so as to control the disconnection of the first controllable switch.

6. The discharge circuit of claim 5, wherein The logic control module comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a capacitor and a second controllable switch. The first end of the first resistor is connected with a target power supply, the second end is connected with the input end of the second controllable switch, and the capacitor is connected with the first resistor in parallel; the control end of the second controllable switch is connected with the output end of the control module through the second resistor and is connected with the ground through the third resistor; the output end of the second controllable switch is connected with the ground; and the control end of the second controllable switch is connected with the ground through the fourth resistor.

7. The discharge circuit of claim 1, wherein The application further comprises: The target power supply is connected with the control module, and is used for supplying power to the control module.

8. The discharge circuit of claim 1, wherein The control module is further used for controlling the conduction time and disconnection time of the first controllable switch, so as to control the discharging time of the power supply to be discharged.

9. The discharge circuit of claim 1, wherein The first controllable switch is a MOS tube.

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