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Adaptive led drive power supply

An LED driving and self-adaptive technology, applied in electric light source, light source, electric light circuit layout, etc., can solve the problems of the inability to exert the advantages of LED lighting, and achieve humanized operation, strong controllability, and reduced output ripple. Effect

Inactive Publication Date: 2011-12-07
CHANGZHOU WUJIN FENGTAI ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the field of LED lighting, to reflect the characteristics of energy saving and long life, it is very important to choose a good LED driving power supply. Without a good matching of driving power supply, the advantages of LED lighting cannot be brought into play

Method used

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  • Adaptive led drive power supply
  • Adaptive led drive power supply

Examples

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Embodiment 1

[0029] See figure 1 , the adaptive LED drive power supply of this embodiment includes: input filter rectification unit 1, PCF unit 2, voltage conversion unit 3, output unit 4, DSP main control chip unit 6, isolation drive unit 7, current feedback unit 8, temperature A detection unit 9 , a volt-ampere characteristic detection unit 10 , a synchronous drive unit 11 , a PC communication interface unit 12 and an auxiliary power supply unit 13 .

[0030]The input filtering and rectifying unit 1 is connected to the input terminal of the power supply. The PFC unit 2 is connected to the output terminal of the input filter rectifier unit 1 . The voltage conversion unit 3 is connected to the output end of the PCF unit 2 . The output unit 4 is connected to the output terminal of the voltage conversion unit 3 . The output end of the output unit 4 is connected with the LED lamp 5 . The DSP main control chip unit 6 sends out a PWM pulse width modulation signal to control the isolated dri...

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Abstract

The invention discloses an adaptive LED drive power supply, which comprises an input filter rectification unit connected with the input end of the power supply; a PFC unit connected with the output end of the input filter rectification unit; a voltage conversion unit connected with the output end of the PCF unit; An output unit connected to the output of the unit; the output of the output unit is connected to the LED lamp; it also includes a DSP main control chip unit and an isolated drive unit; the DSP main control chip unit sends a PWM pulse width modulation signal to control the isolated drive unit, and then controls The voltage conversion of the voltage conversion unit. The invention adopts the DSP main control chip unit to intelligently manage the entire digital LED drive circuit, realizes the optimal configuration of long-life power supply and LED load, improves light efficiency to the greatest extent, saves energy, is very intelligent, and completely solves the problem of LED application problems due to its own inconsistencies.

Description

technical field [0001] The invention relates to a driving power supply, in particular to an adaptive LED driving power supply. Background technique [0002] High-brightness light-emitting diode LEDs are becoming a new generation of green lighting sources due to their energy saving, environmental protection, high efficiency, long life and many other advantages. Manufacturing high-efficiency, low-cost, high-power-factor, and long-life drive power supplies is the key to ensuring LED luminous quality and overall performance and promoting the rapid development of the LED industry. [0003] At present, in daily lighting occasions where mains power is input, a circuit including an adapter and a driver is often used to drive the LED to light up. The function of the adapter is to implement input power factor correction (PFC) and AC-DC conversion (AC-DC). The latter stage provides stable voltage. The driver is composed of LED-specific driver chips, which provide constant current for...

Claims

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Application Information

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IPC IPC(8): H05B37/02
CPCY02B20/48Y02B20/40
Inventor 谢伟文贺建平丁玉红
Owner CHANGZHOU WUJIN FENGTAI ELECTROMECHANICAL
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