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Practical and efficient LED drive circuit

A technology of LED drive and drive circuit, which is applied in the direction of electric lamp circuit layout, electric light source, and protection against overcurrent, which can solve the problems of low drive efficiency and achieve the effects of perfect function, cost saving and low cost

Inactive Publication Date: 2011-04-13
MOSO POWER SUPPLY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned shortcomings of low driving efficiency of the LED drive circuit in the prior art, the present invention provides a new LED drive circuit to solve the above problems

Method used

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  • Practical and efficient LED drive circuit
  • Practical and efficient LED drive circuit
  • Practical and efficient LED drive circuit

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Embodiment Construction

[0019] This embodiment is a preferred implementation mode of the present invention, and other principles and basic structures that are the same or similar to this embodiment are within the protection scope of the present invention.

[0020] Please see attached figure 1 , the present invention mainly includes a DC input module, a switch module, a switch drive module, a freewheeling energy storage module, a shaping module and a control module, the DC input module inputs DC power to the switch module, and outputs it to the freewheeling energy storage module after passing through the switch module The LED light group is driven by the freewheeling energy storage module, the control module outputs a control signal to the shaping module, and the shaping module drives the switching module to act through the switch driving module. The invention also includes an output short-circuit protection module, the freewheeling energy storage module outputs power to the output short-circuit prote...

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Abstract

The invention discloses a practical and efficient LED drive circuit, which comprises a direct-current input module, a switch module, a switch drive module, a follow-current storage module, a shaping module and an oscillating feedback module, wherein the direct-current input module inputs the direct-current power supply to the switch module, and then the direct-current power supply after passing through the switch module is output to the follow-current storage module, so that an LED lighting set is driven by the follow-current storage module; the oscillating feedback module outputs oscillating signals to the shaping module; and the shaping module drives the switch module to operate by the switch drive module. A short-circuit protection circuit and a switching circuit in the LED drive circuit are completely independent without any contact, and when the LED drive circuit of the invention is protected, the protection is not affected by the preceding stage and dose not affect the preceding stage, thereby enhancing the reliability of the whole circuit. The LED drive circuit in the invention has the advantages that: through artfully combining self-sustained oscillation, shaping and current feedback, the circuit can be high in efficiency and low in cost; and the short-circuit protection is completely independent, so that the function of the whole circuit is perfect.

Description

technical field [0001] The invention discloses an LED driving circuit, in particular an efficient and practical LED driving circuit. Background technique [0002] With the application of LEDs in people's lives more and more widely, LED lighting has become a new direction of people's research in the field of lighting. For LED lighting, it is essential to use an LED driver circuit. The switching power supply circuit is a kind of LED driving circuit commonly used by people. However, the current switching power supply circuit usually has disadvantages such as low driving efficiency and low controllability. Contents of the invention [0003] Aiming at the disadvantage of low driving efficiency of the LED driving circuit in the prior art mentioned above, the present invention provides a new LED driving circuit to solve the above problem. [0004] The technical solution adopted by the present invention to solve the technical problem is: an efficient and practical LED drive circ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02H02H3/08
Inventor 顾永德苏周徐兵
Owner MOSO POWER SUPPLY TECH
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