A parameter-configurable led driver chip and led driver circuit

A technology for driving LEDs and configuring parameters. It is used in electric light sources, electrical components, lighting devices, etc. It can solve the problems of inability to display, interrupt display, and low control efficiency, and achieve the effect of improving stability.

Active Publication Date: 2018-01-16
GENESIS SYSTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When it is necessary to control each LED driver chip, it is necessary to send configuration data separately to control the LED driver chip, which makes the control efficiency not high and will interrupt the display. In addition, the driver chip is also easy to process the configuration data as display data, resulting in failure Shown

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  • A parameter-configurable led driver chip and led driver circuit
  • A parameter-configurable led driver chip and led driver circuit
  • A parameter-configurable led driver chip and led driver circuit

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Embodiment Construction

[0026] The present invention provides an LED driver chip and LED driver circuit with configurable parameters. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] See figure 1 , figure 1 A structural block diagram of an LED drive circuit with configurable parameters provided by the present invention. Such as figure 1 As shown, the LED driving circuit includes a controller 10 and n LED driving chips 20, wherein n is a positive integer greater than 1. n LED driver chips 20 are connected in series to form a multi-stage LED driver, and the input end of the first-stage LED driver chip 1 is connected to the output end of the controller 10 .

[0028] The controller 10 is configured to output external cont...

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Abstract

The invention discloses an LED driving chip and an LED driving circuit with configurable parameters, wherein the LED driving chip includes a port detection module, an external control module and a PWM display module. Through the external control module, when the external control data is input at the input end, the present invention extracts the display data required by the LED driver chip of the current level and obtains the configuration data for configuring the parameters of the LED driver chip, and extracts the external control data or the display data from the display data. The remaining external control data after the data is output to the next-level LED driver chip; thus, the control of the LED driver chip is realized without affecting the normal display. The external control data includes display data and a set of configuration data, and the length of the increased data frame is small and will not affect the number of LED driving chips connected in series. The number of bits of the display data extracted by the external control module is different from the number of bits of the configuration data, so that the driver chip will not confuse the display data and the configuration data, and the stability of the display is improved.

Description

technical field [0001] The invention relates to the technical field of LED lamp control, in particular to an LED drive chip and an LED drive circuit with configurable parameters. Background technique [0002] At present, in the prior art, the LED driver chips of the serial display system are connected in series step by step, and the external control data (including display data) is transmitted step by step between the LED driver chips of each level. When it is necessary to control each LED driver chip, it is necessary to send configuration data separately to control the LED driver chip, which makes the control efficiency not high and will interrupt the display. In addition, the driver chip is also easy to process the configuration data as display data, resulting in failure The displayed situation. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] In view of the above-mentioned deficiencies in the prior art, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00Y02B20/30
Inventor 林斌斌姚瑞琨
Owner GENESIS SYSTECH CO LTD
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