CN108495400A - 一种大功率的led日光灯驱动器 - Google Patents

一种大功率的led日光灯驱动器 Download PDF

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Publication number
CN108495400A
CN108495400A CN201810158383.3A CN201810158383A CN108495400A CN 108495400 A CN108495400 A CN 108495400A CN 201810158383 A CN201810158383 A CN 201810158383A CN 108495400 A CN108495400 A CN 108495400A
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CN
China
Prior art keywords
power
circuit
fluorescent light
light initiator
led fluorescent
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Pending
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CN201810158383.3A
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English (en)
Inventor
不公告发明人
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Shangsi County Dongdong Electronic Science & Technology Co Ltd
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Shangsi County Dongdong Electronic Science & Technology Co Ltd
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Application filed by Shangsi County Dongdong Electronic Science & Technology Co Ltd filed Critical Shangsi County Dongdong Electronic Science & Technology Co Ltd
Priority to CN201810158383.3A priority Critical patent/CN108495400A/zh
Publication of CN108495400A publication Critical patent/CN108495400A/zh
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits

Abstract

一种大功率的LED日光灯驱动器,其外型和尺寸与同类产品一样,其电路结构由交流滤波电路、全桥整流电路和功率因数校正电路组成。它具有约25W功率,完全满足用户的照明要求。

Description

一种大功率的LED日光灯驱动器
技术领域
本发明涉及一种大功率的LED日光灯驱动器。
背景技术
目前市场上流行的LED日光灯驱动器,其驱动功率都在20W以下,给一些用户的照明感到亮度不够。
发明内容
本发明一种大功率的LED日光灯驱动器,公开一种大功率的LED日光灯驱动器,它具有驱动约25W功率,当用于驱动LED日光灯时,能使日光灯的亮度比普通的LED日光灯亮度提高很多,完全满足用户的照明要求。
一种大功率的LED日光灯驱动器,其电路结构由交流滤波电路、全桥整流电路、功率因数校正电路和PWM调制电路组成。
附图说明
图1是一种大功率的LED日光灯驱动器的电路原理图。
具体实施方式
如图1所示,交流滤波电路由C1、C2、L1、L2、L3电路组成,其中C1、C2是安规电容,L1、L2是差模电感,L3是共模电感,由上述电子元器件组成交流滤波电路,把输入交流220V电源的非正弦波滤除,以优质交流电源供给整流电路整流。
如图1所示,IC1是桥式整流电路,把交流220V电源变成脉动的直流电源,然后送功率因数校正电路。桥式整流电路输出的电压信号连续,但电流信号出现不连续现象,使负载的功率因数降低,影响电源的利用率。为此,引入功率因数校正电路,它由R1、C3、C4、C5、D1、D2、D3组成,能把功率因数提高到0.9以上。
如图1所示,IC2及外围电路组成PWM调制电路,IC2为型号PT4207芯片,电阻R2是启动电阻,经过芯片内部齐纳二极管的钳制后给信片供电。R5是关断时间设定电阻,芯片PT4207的内部MOS管、高压MOS管T、快速恢复二极管D5、功率电感L4、采样电阻R6,组成自举式驱动电路,给负载供电。R6同时也是电流采样电阻,采样通过芯片内部MOS管的峰值电流,反馈给芯片进行PWM控制,从而达到恒流效果。
如图1所示,V是压敏电阻,在电路中起到抗雷击及瞬间过电压保护作用。B是保险丝,在电路中起过载保护。E是负温度系数热敏电阻,在电路中起到抗浪涌作用。

Claims (1)

1.一种大功率的LED日光灯驱动器,电路组成由交流滤波电路、全桥整流电路、功率因数校正电路和PWM调制电路组成,其特征在于:LED日光灯的驱动能力具有约25W功率,当用于驱动LED日光灯时,能使日光灯的亮度比普通的同类产品亮度提高很多。
CN201810158383.3A 2018-02-23 2018-02-23 一种大功率的led日光灯驱动器 Pending CN108495400A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810158383.3A CN108495400A (zh) 2018-02-23 2018-02-23 一种大功率的led日光灯驱动器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810158383.3A CN108495400A (zh) 2018-02-23 2018-02-23 一种大功率的led日光灯驱动器

Publications (1)

Publication Number Publication Date
CN108495400A true CN108495400A (zh) 2018-09-04

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CN201810158383.3A Pending CN108495400A (zh) 2018-02-23 2018-02-23 一种大功率的led日光灯驱动器

Country Status (1)

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CN (1) CN108495400A (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201706256U (zh) * 2010-04-30 2011-01-12 深圳市东昊光电子有限公司 一种大功率led日光灯
CN201846506U (zh) * 2010-10-09 2011-05-25 大连森谷新能源电力技术有限公司 高效恒流源驱动的led电路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201706256U (zh) * 2010-04-30 2011-01-12 深圳市东昊光电子有限公司 一种大功率led日光灯
CN201846506U (zh) * 2010-10-09 2011-05-25 大连森谷新能源电力技术有限公司 高效恒流源驱动的led电路

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Application publication date: 20180904

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