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DC-DC and linear combination LED driving circuit anddriving method thereof and storage medium

A technology of LED drive and linear combination, applied in the field of LED drive, can solve the problems of LED open-circuit protection, such as difficulty in meeting regulations, low driving efficiency, and high heat generation, and achieve simple and reliable LED open-circuit protection requirements, reduce system costs, and meet regulatory requirements Effect

Pending Publication Date: 2019-01-18
HASCO VISION TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a DC-DC and linear combination LED driving circuit, its driving method and storage medium, which are used to solve the problems existing in the existing LED driving methods. Low driving efficiency, high heat generation, difficulty in meeting regulations and high cost in LED open circuit protection

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  • DC-DC and linear combination LED driving circuit anddriving method thereof and storage medium
  • DC-DC and linear combination LED driving circuit anddriving method thereof and storage medium
  • DC-DC and linear combination LED driving circuit anddriving method thereof and storage medium

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Embodiment Construction

[0034] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...

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Abstract

The invention provides a DC-DC and linear combination LED driving circuit and adriving method thereof and a storage medium. The DC-DC constant voltage drive module and linear control chip are combinedin parallel with the multi-channel LED lamp group, and the corresponding protection circuit is provided for the multi-channel LED lamp group. The invention can improve the LED driving efficiency, reduce the system cost, and meet the LED open circuit protection requirement simply and reliably.

Description

technical field [0001] The invention relates to the technical field of LED driving, in particular to a DC-DC and linear combination LED driving circuit, a driving method and a storage medium thereof. Background technique [0002] With the popularization of the application of LED in the field of automobile lights, its driving methods are also in various forms, forming a variety of classifications. There are three main types: 1) Resistive type: the lowest efficiency, large driving heat, and the lowest cost; 2) Linear constant current type: low efficiency, large driving heat, and moderate cost; 3) DC-DC constant current type, Highest efficiency, low driving heat, but high cost. Each of the three methods has advantages and disadvantages. [0003] At present, the mainstream LED driving methods mostly use resistive or linear constant current. Generally, LEDs are used in a string of 1 to 3 pieces, and discrete devices are used to build complex LED open circuit protection circuits...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/50H05B45/00Y02B20/30
Inventor 刘兰保李佳颖
Owner HASCO VISION TECHNOLOGY CO LTD