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LED driver chip, LED drive circuit and LED lamp

A LED driver and chip technology, applied in the field of lighting, can solve the problems of limiting the design flexibility of lamp power and being unable to provide drivers higher than 18w

Active Publication Date: 2017-01-11
WUHU SUNSHINE ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fixed parameters of the MOS tubes in the prior art IC modules, such as providing a drive of up to 18W, in the a

Method used

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  • LED driver chip, LED drive circuit and LED lamp
  • LED driver chip, LED drive circuit and LED lamp

Examples

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Embodiment Construction

[0023] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0024] figure 1 It is a frame diagram of the LED driver chip in one of the embodiments of the present invention, such as figure 1 As shown, the LED driver chip includes a power factor control module 107, an overvoltage protection module 104, an overcurrent protection module 106, an overtemperature protection module 105, a logic driver module 101, a built-in MOS tube 102, a loop compensation pin COMP, and a ground pin GNP , chip power supply pin VCC, feedback signal pin FB, drain terminal pin D, gate terminal pin G and source terminal pin CS.

[0025] Wherein, the loop compensation pin COMP is connected to the input terminal of the power factor control module 107 , and the output terminal of the power factor contr...

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PUM

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Abstract

The invention provides an LED driver chip, an LED drive circuit and an LED lamp. The drive chip comprises a power factor control module, an overvoltage protection module, an over-current protection module, an over-temperature protection module, a logic drive module, a built-in MOS tube, a drain terminal pin, a gate terminal pin and a source terminal pin, wherein output ends of the power factor control module, the overvoltage protection module, the over-current protection module and the over-temperature protection module are connected with an input end of the logic drive module separately; a grid of the built-in MOS tube is connected with the output end of the logic drive module; the gate terminal pin is connected with the grid of the built-in MOS tube; the drain terminal pin is connected with a drain of the built-in MOS tube; and the source terminal pin is connected with a source of the built-in MOS tube. The LED driver chip provided by the invention can be connected with required external MOS tubes in parallel according to the drive requirements of the LED drive circuits with different power to achieve the diffusion effect on the LED driver chip.

Description

technical field [0001] The invention relates to the lighting field, in particular to an LED driving chip, an LED driving circuit and an LED lamp. Background technique [0002] As a fourth-generation lighting source, LED has significant advantages in energy saving and longevity. With the development of society, the problem of lighting energy consumption in daily life has become increasingly prominent. Therefore, LED power supply modules with significant energy-saving advantages are more and more popular among people. [0003] The drive for LED lamps is the key to the work of LED lamps. There is a MOS tube packaged inside the existing driver IC module, which provides comprehensive over-temperature, over-current, and over-voltage protection for LED lamps, and can provide better protection than LED lamps with matching current and power. A good driving solution, this type of IC module can provide low-cost driving for LED lighting factories, and has a wide range of applications. ...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 王冬雷王彦国苏方宁
Owner WUHU SUNSHINE ELECTRONICS TECH