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Lighting LED digital power-driven management control circuit

A LED power supply, management and control technology, applied in the direction of lamp circuit layout, electric light source, lighting device, etc., to achieve the effect of simplifying the design and manufacturing process, easy debugging and maintenance work, and reducing the board area

Inactive Publication Date: 2010-10-13
PEKING UNIV SHENZHEN GRADUATE SCHOOL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned shortcomings of the existing LED lamp analog power supply control module, and to provide a digital power supply drive management control circuit for LED lighting

Method used

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  • Lighting LED digital power-driven management control circuit
  • Lighting LED digital power-driven management control circuit
  • Lighting LED digital power-driven management control circuit

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Embodiment Construction

[0017] The present invention provides a digital power supply drive management control circuit for light-emitting diodes. The management control circuit replaces the previous analog circuit with a digital circuit, including a digital pulse width modulation module DPWM, an analog-to-digital converter module ADC, and an all-digital phase-locked loop. modules, microcontroller modules, and digital compensator modules. The specific structure is as figure 2 shown.

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The structure of digital LED power supply drive management control circuit of the present invention, as figure 2 shown. It includes a digital pulse width modulation module, an analog-to-digital converter module ADC (ADC module for short), an all-digital phase-locked loop module, a microcont...

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Abstract

The invention relates to a lighting LED digital power-driven management control circuit, which comprises a digital pulse width modulation module, an analog to digital converter module ADC, a full digital phase-locked loop module, a microcontroller module and a digital compensator module. A digital circuit replaces the traditional analog circuit or mixed signal circuit, and the digital pulse width modulation module DPWM is adopted to digitally manage an independent digital control loop and a phase to monitor, control and manage DC / DC load point power conversion so as to provide a stable power supply to adjust the brightness of the LED; and the required control function can be realized under the control of the microcontroller according to the requirement of a user. Therefore, the complexity of the system is reduced, the integrity of the circuit is improved, the whole design can be realized by the hardware description language and the design and manufacture flow is simplified.

Description

technical field [0001] The invention relates to a lighting power supply drive management control circuit, in particular to a digital power supply drive management control circuit for a light emitting diode (Light Emitting Diode). Background technique [0002] LED lights have the advantages of high energy saving, long life, environmental protection, easy dimming, and fast turn-on time. In addition, the awareness of environmental protection around the world is high, so LED lights with such high efficiency are very popular in the market. They are widely used in home lighting. , outdoor lighting and other fields have been widely used, and will become the development trend of the lighting industry. [0003] Most of the power management and control modules of the currently used LED driver chips are implemented in an analog or digital-analog hybrid manner. The structure diagram is as follows figure 1 As shown, the analog pulse width modulation PWM (PulseWidth Modulation) method is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 李挥马子龙宋思聪李江李锐源李烽
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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