CN-122026709-A - Power supply circuit, control method thereof, display device and electronic equipment

CN122026709ACN 122026709 ACN122026709 ACN 122026709ACN-122026709-A

Abstract

The application provides a power supply circuit, a control method thereof, a display device and electronic equipment, and relates to the technical field of power electronics, wherein the power supply circuit comprises a power supply module and a main control unit connected with the power supply module; the main control unit comprises a control module, a protocol communication module, a power supply starting circuit and a connecting port, wherein the control module is connected with one end of the power supply module, the other end of the power supply module is connected with the connecting port through the power supply starting circuit, the protocol communication module is respectively connected with the connecting port and the control module, the control module is configured to drive the power supply module to output a first power supply under the condition that the connecting port is connected with a terminal device, and the protocol communication module is configured to control the power supply starting circuit to be conducted after the power supply module outputs the first power supply. The embodiment of the application can solve the problem that the connection between the display and the notebook can not be awakened, and improves the user experience.

Inventors

WEI HAO
LIU JUNJIE
JIANG FENG
WANG LU

Assignees

高创(苏州)电子有限公司
京东方科技集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260114

Claims (11)

1. The power supply circuit is characterized by comprising a power supply module and a main control unit connected with the power supply module; The main control unit comprises a control module, a protocol communication module, a power supply starting circuit and a connecting port, wherein the control module is connected with one end of the power supply module, and the other end of the power supply module is connected with the connecting port through the power supply starting circuit; The control module is configured to drive the power supply module to output a first power supply under the condition that the terminal equipment is connected to the connection port; the protocol communication module is configured to control the power starting circuit to be conducted after the power module outputs the first power.
2. The power circuit of claim 1, wherein the power module comprises a first power generation module for outputting the first power, the power start circuit comprises a power management chip and a control switch in series, the first power generation module is connected to the power management chip, and the control switch is connected to the connection port.
3. The power circuit of claim 2, wherein the power module further comprises a second power generation module for outputting a second power, the second power generation module having a voltage value smaller than the first power, the second power generation module being connected to a control module subunit, the control module subunit being another control unit on a control motherboard where the master control unit is located, the second power generation module being configured to be in a normally open state.
4. The power circuit of claim 3, wherein the second power generation module is further coupled to the power management chip.
5. The power circuit of claim 2, wherein a power switch is disposed between the first power generation module and the power management chip, the control module is connected to the power switch, and the first power generation module is further connected to the control module subunit.
6. The power circuit of any one of claims 1-4, wherein the connection port is further connected to the control module.
7. The power supply circuit of any one of claims 1-4, wherein the control switch comprises a first MOS transistor and a second MOS transistor, the first MOS transistor and the second MOS transistor being symmetrically arranged in series.
8. A method of controlling a power supply circuit, the method comprising: according to the connection signal of the connection port, determining that the connection port is connected with terminal equipment; sending a wake-up signal to a control module to enable the control module to generate a driving signal, wherein the driving signal is used for driving a power supply module to output a first power supply; And sending a switch closing signal to a power supply starting circuit so as to enable the power supply starting circuit to be conducted and supply power to the connecting port.
9. The control method of claim 8, wherein the connection port of the power circuit is further connected to the control module, the method further comprising: and generating the driving signal according to the connection signal through the control module.
10. A display device comprising the power supply circuit according to any one of claims 1 to 7.
11. An electronic device comprising the display device according to claim 10 and a terminal device, the terminal device and the display device being connected through a connection port.

Description

Power supply circuit, control method thereof, display device and electronic equipment Technical Field The present application relates to the field of power electronics, and in particular, to a power supply circuit, a control method thereof, a display device, and an electronic apparatus. Background In some scenarios, the display device includes a Monitor (MNT) and a notebook, both of which may be a power supply or a power receiving terminal. When the MNT is used as a Power supply terminal and the notebook is used as a Power receiving terminal, the MNT and the notebook communicate with each other through a Power transmission Protocol (PD), because the Power on time of the Power bus Vbus is not synchronous with the Power supply time sequence of the Power management integrated circuit PMIC in the MNT, or the PMIC is powered on slowly, a communication failure occurs. Therefore, when the display is in a standby state and the notebook computer is in a normal running state for the first time, the display cannot be awakened after the notebook computer is started, and power cannot be supplied, so that user experience is affected. It should be noted that the foregoing statements are merely to provide background information related to the present disclosure and may not necessarily constitute prior art. Disclosure of Invention In view of the above, the present application aims to provide a power supply circuit, a control method thereof, a display device and an electronic device, which can solve the problem that the conventional display cannot wake up when being connected with a terminal. According to the first aspect, the application provides a power supply circuit, which comprises a power supply module and a main control unit connected with the power supply module, wherein the main control unit comprises a control module, a protocol communication module, a power supply starting circuit and a connecting port, the control module is connected with one end of the power supply module, the other end of the power supply module is connected with the connecting port through the power supply starting circuit, the protocol communication module is respectively connected with the connecting port and the control module, the control module is configured to drive the power supply module to output a first power supply when the connecting port is connected with a terminal device, and the protocol communication module is configured to control the power supply starting circuit to be conducted after the power supply module outputs the first power supply. In some embodiments, the power module includes a first power generation module for outputting the first power, the power starting circuit includes a power management chip and a control switch connected in series, the first power generation module is connected to the power management chip, and the control switch is connected to the connection port. In some embodiments, the power module further includes a second power generation module for outputting a second power, where a voltage value of the second power is smaller than that of the first power, the second power generation module is connected to a control module subunit, the control module subunit is another control unit on a control motherboard where the main control unit is located, and the second power generation module is configured to be in a normally open state. In some embodiments, the second power generation module is further coupled to the power management chip. In some embodiments, a power switch is disposed between the first power generation module and the power management chip, the control module is connected to the power switch, and the first power generation module is further connected to the control module subunit. In some embodiments, the connection port is also connected to the control module. In some embodiments, the control switch includes a first MOS transistor and a second MOS transistor, the first MOS transistor and the second MOS transistor being symmetrically arranged in series. The second aspect further provides a control method of the power supply circuit, which comprises the steps of determining that the terminal equipment is connected to the connection port according to a connection signal of the connection port, sending a wake-up signal to the control module to enable the control module to generate a driving signal, wherein the driving signal is used for driving the power supply module to output a first power supply, and sending a switch closing signal to the power supply starting circuit to enable the power supply starting circuit to be conducted and supply power to the connection port. In some embodiments, the connection port of the power supply circuit is further connected to the control module, and the method further includes generating, by the control module, the driving signal according to the connection signal. In a third aspect, there is also provided a display device comprising the power supply circuit