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Backlight driving circuit and vehicle

A technology of backlight driving circuit and light source, applied in lighting circuits and other directions, can solve the problem of high cost, save costs, avoid replacing components such as controllers, and satisfy the effect of driving light sources

Active Publication Date: 2020-12-18
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then, when replacing the display screen or backlight drive power supply, it is often necessary to replace the backlight drive chip to meet the application of the changed solution, and it is necessary to re-adjust the new drive chip, which is costly

Method used

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  • Backlight driving circuit and vehicle
  • Backlight driving circuit and vehicle
  • Backlight driving circuit and vehicle

Examples

Experimental program
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Embodiment Construction

[0026] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, are only for explaining the present application, and should not be construed as limiting the present application.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first fea...

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PUM

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Abstract

The invention relates to a backlight driving circuit which comprises a controller, a switching tube, an inductor, a capacitor and a light source. The controller is configured to be connected with a power source, the switching tube is configured to control the charging and discharging process of the controller on the inductor, the inductor and the capacitor are both configured to discharge to the light source, under the condition that the voltage of the power supply is greater than the required voltage of the light source, the controller, the switching tube, the inductor, the capacitor and thelight source form a step-down topological structure; and under the condition that the voltage of the power supply is smaller than the required voltage of the light source, the controller, the switching tube, the inductor, the capacitor and the light source form a boost topological structure. According to the backlight driving circuit in the embodiment manner, different topological structures can be configured according to the voltage of the power supply and the voltage of the light source, the requirement for driving the light source can be met, replacement of components such as the controlleris avoided, and the cost is saved.

Description

technical field [0001] The present application relates to the field of automobile equipment, and more specifically, relates to a backlight driving circuit and a vehicle. Background technique [0002] With the development of in-vehicle electronics, the display size of the in-vehicle system is getting larger and larger, and the driving requirements for the display backlight are also getting higher and higher. The driving current requirements of the display backlight will be related to the number and arrangement of the LEDs in the backlight. Meet the needs of different display sizes and brightness. [0003] In the related art, a suitable driver chip can be selected according to the driving voltage of the display screen backlight and the requirements of the backlight driving power supply to meet the application of the display screen. Then, when replacing the display screen or the backlight drive power supply, it is often necessary to replace the backlight drive chip to meet the...

Claims

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Application Information

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IPC IPC(8): B60Q3/80
CPCB60Q3/80
Inventor 孙威峰
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD