Multi-channel power supply circuit

Abstract

The invention provides a multichannel power supply circuit. The multichannel power supply circuit comprises a plurality of power supply sub-circuits connected in parallel and a time sequence controller; each power supply sub-circuit comprises a current output unit, and a sensing control unit electrically connected with the current output unit; and the time sequence controller is electrically connected with the sensing control units of the plurality of power supply sub-circuits, the time sequence controller is respectively in communication connection with the current output unit of each power supply sub-circuit, the sensing control unit is electrically connected with a load, each sensing control unit receives current outputted by the corresponding current output unit, transmits the current to the load, and generates a control signal according to the current outputted by the current output unit to send the control signal to the time sequence controller, and the time sequence controller controls the output current of the corresponding power supply sub-circuit according to the control signal when receiving the control signal, so that the output current of the power supply sub-circuits is reduced, and the damage risk of elements and devices caused by the excessively high temperature caused by the excessively high current can be reduced.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to a multi-channel power supply circuit. Background technique [0002] With the development of display technology, liquid crystal displays (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, televisions, personal Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream of display devices. [0003] Most of the liquid crystal display devices currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module (Backlight Module). The working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates. The direction of the liquid crystal mole...

AI Technical Summary

Problems solved by technology

[0005] like figure 1 As shown, it is an existing multi-channel power supply circuit applied in a liquid crystal display device, including a first current output unit 101 and a second current output unit 102 connected in parallel, and the first current output unit 101 and the second current output unit 101 The output unit 102 is electrically connected to the load 103, and the first current output unit 101 and the second current output unit 102 supply power to the load 103 at the same time, and the multi-channel power supply circuit does not have a power supply for the first current output unit 101 and the second current output unit. The unit that controls the current output by 102 may cause the output current of the first current output unit 101 or the output current of the second current output unit 102 to exceed the preset output current, resulting in the first current output unit 101 and the second current output unit One of the 102 is overheated, which leads to the risk of component damage and reduces the reliability of the circuit

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