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LED driving hot swap control circuit

A technology of LED drive and LED driver, which is applied in the direction of electric lamp circuit layout, electric light source, lighting device, etc. It can solve the problems of high output current, easy burning of LED lamp beads, and easy damage of LED lamp beads, so as to prolong life and simplify implementation Effective, Inexpensive Effects

Active Publication Date: 2014-07-23
SHANGHAI MOONS AUTOMATION CONTROL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the LED lamp beads on the market are connected in series. If the LED lamp bead fails in a short circuit, the output current of the LED driver will exceed the rated current of the LED by several times, and the LED lamp bead is easily burned.
In addition, during the maintenance and repair of the lamps, if the AC is not cut off, if the LED lamp module is directly replaced, the output current will be higher, and the LED lamp beads will be easily damaged.

Method used

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Embodiment

[0016] Such as figure 1 As shown, a LED driver hot swap control circuit, the control circuit is connected between the LED driver and the LED lamp module, the control circuit includes a current detection locking unit, a soft start unit and a reset unit, the described The current detection locking unit is respectively connected with the LED driver, the soft start unit and the reset unit, and the soft start unit is respectively connected with the reset unit and the LED lamp module;

[0017] When the current signal detected by the current detection locking unit exceeds the set threshold, the soft start unit will be turned off to disconnect the LED driver from the LED lamp module, and the reset unit will reset the current detection locking unit after disconnection. The current detection locking unit turns on the soft start unit, so that the LED driver and the LED lamp module are connected.

[0018] Such as figure 2 As shown, the current detection locking unit includes a transist...

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Abstract

The invention relates to an LED driving hot swap control circuit. The control circuit is connected between an LED driver and an LED lamp module; the control circuit comprises a current detection locking unit, a soft starting unit and a reset unit, wherein the current detection locking unit is respectively connected with the LED driver, the soft starting unit and the reset unit, and the soft starting unit is respectively connected with the reset unit and the LED lamp module; and when a current signal detected by the current detection locking unit exceeds a set threshold, the soft starting unit is switched off, the LED driver is disconnected from the LED lamp module, after disconnection, the reset unit enables the current detection locking unit to be reset, and the current detection locking unit starts the soft starting unit to enable the LED driver to be connected with the LED lamp module. Compared to the prior art, the LED driving hot swap control circuit has the advantages of long service life, convenient maintenance and repair, low realization cost and the like.

Description

technical field [0001] The invention relates to a technology related to LED driving, in particular to a LED driving hot swap control circuit. Background technique [0002] At present, most of the LED lamp beads on the market are connected in series. If the LED lamp bead fails in a short circuit, the output current of the LED driver will exceed the rated current of the LED by several times, and the LED lamp bead is easily burned. . In addition, when the lamp is being maintained and overhauled, if the AC is not cut off, if the LED lamp module is directly replaced, the output current will be higher, and the LED lamp beads will be easily damaged. Contents of the invention [0003] The object of the present invention is to provide an LED drive hot-swap control circuit with long service life, convenient maintenance and low implementation cost in order to overcome the above-mentioned defects in the prior art. [0004] The purpose of the present invention can be achieved through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 涂必林胡国勤庄勤锋刘强储呈阳李胜陈显林陈春鹿
Owner SHANGHAI MOONS AUTOMATION CONTROL CO LTD
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