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Backlight driver circuit and vehicle

A technology of backlight driving circuit and light source, which is applied in the direction of lighting circuit, etc., can solve the problem of high cost, achieve the effect of saving cost, satisfying driving light source, and avoiding the replacement of components such as controller

Active Publication Date: 2022-03-18
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 driver circuit and vehicle
  • Backlight driver circuit and vehicle
  • Backlight driver circuit and vehicle

Examples

Experimental program
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Embodiment Construction

[0026] The embodiment of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The following is exemplary, and is intended to explain the present application by referring to the embodiments described with reference to the accompanying drawings.

[0027] In the present invention, unless otherwise expressly specified and defined, the first feature "upper" or "lower" or "lower" may include direct contact between the first and second features, and may include first and second features. It is not directly in contact with additional feature between them. Moreover, the first feature "above", "above" and "upper" include the first feature to the second feature is directly above and obliquely, or only means that the first feature level is higher than the second feature. The first feature is in...

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PUM

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Abstract

A backlight drive circuit according to an embodiment of the present application includes a controller, a switch tube, an inductor, a capacitor, and a light source, the controller is configured to be connected to a power supply, and the switch tube is configured to control the controller's response to the inductor In the charging and discharging process, the inductor and the capacitor are configured to discharge to the light source. When the voltage of the power supply is greater than the required voltage of the light source, the controller, the switch tube, and the inductor , the capacitor and the light source form a step-down topology; when the voltage of the power supply is lower than the required voltage of the light source, the controller, the switch tube, the inductor, the The capacitor and the light source form a boost topology. The backlight driving circuit in the embodiment of the present application can be configured into different topological structures according to the voltage of the power supply and the voltage of the light source, which can not only meet the requirements of driving the light source, but also avoid replacing components such as a controller, and save costs.

Description

Technical field [0001] The present application relates to the field of automotive equipment, and more particularly to a backlight driving circuit and a vehicle. Background technique [0002] With the development of onboard electron, the display size of the in-vehicle system is getting bigger and larger, and the driving requirements for the display backlight are also higher and higher. The driving current requirements of the display backlight will be related to the number and arrangement of the LED of the backlight. Meet different display sizes and different brightness needs. [0003] In the related art, a suitable driving chip can be selected to satisfy the display of the display according to the driving voltage and backlight driving power supply requirements of the display backlight. Then, when the display or backlight drive power is replaced, the backlight driving chip is often required to meet the changed scheme application, and the new drive chip needs to be re-debuged, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60Q3/80
CPCB60Q3/80
Inventor 孙威峰
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD