250VAC离线LED驱动解决方案
关键词：
ed驱动 , ir , irs2980 , 离线
ir公司的irs2980采用该公司的控制和高压技术,实现简单高性能调光led驱动解决方案,包括调光led驱动控制器,滞后电流调整,闭环led电流调光控制,模拟/pwm调光输入,集成了高压稳压器,250ua微功耗起动,主要用在led照明/cfl替代灯以及led驱动模块.本文介绍了irs2980主要特性,方框图, 应用电路图以及90-250vac离线led驱动器irplled7参考设计主要特性,方框图, 电路图和材料清单.
the irs2980 utilizes international rectifier’s control and high-voltage technologies to realize a simple, high performance dimming led driver solution. this solution is based on a hysteretic topology where the high frequency ac output current is controlled by adjusting the oscillator frequency and duty cycle.
irs2980主要特性:
• dimming led driver controller
• hysteretic current regulation
• closed-loop led current dimming control
• analog/pwm dimming input
• internal high voltage regulator
• internal 15.6v zener clamp diode on vcc
• micropower startup (250μa)
• latch immunity and esd protection
led驱动器系统特性:
• single chip dimming solution
• simple led current dimming control method
• no external protection circuits required (fully internal)
• easy to use for fast design cycle time
• increased manufacturability and reliability
irs2980典型应用:
• led incandescent/cfl replacement lamps
• led driver module
2011-11-8 12:43:44 上传
下载附件 (16.91 kb)
图1. irs2980方框图
2011-11-8 12:43:44 上传
下载附件 (17.02 kb)
图2. irs2980应用电路图
采用irs2980的90-250vac离线led驱动器irplled7
solid state light sources are now available that offer viable alternatives to fluorescent and hid lamps and far surpass incandescent lamps. luminous efficacy expressed in lumens per watt has now reached levels enabling leds to be used for general illumination. high brightness leds also possess the added advantages of longer operating life span up to 50000 hours and greater robustness than other less efficient light sources making them suitable for outside applications such as street lighting.
high power leds are ideally driven with constant regulated dc current, requiring a driver or converter to provide the required current from an ac or dc power source. a simple single stage power converter based around the irs2980 led driver ic provides a controlled current output over a wide ac line or dc voltage input range.
the irplled7 evaluation board is an off line non-isolated constant current buck regulator led driver designed to supply a 350ma dc output current. the led output voltage can be up to 90% of the input voltage, operating from an ac line input voltage between 90 and 250vac 50/60hz. it also includes pwm dimming capability from 10% to 100% of light output controlled by an on board potentiometer.
2011-11-8 12:43:44 上传
下载附件 (56.92 kb)
图3. 90-250vac离线led驱动器外形图
90-250vac离线led驱动器主要特性:
featuring irs2980s hvic led driver
non-isolated buck regulator
90-250v ac input voltage
0-50v dc output voltage
regulated output current of 350ma
pwm dimmable
2011-11-8 12:43:44 上传
下载附件 (8.19 kb)
图4.90-250vac离线led驱动器irplled7方框图
2011-11-8 12:43:44 上传
下载附件 (37.53 kb)
图5. irplled7电路图
90-250vac离线led驱动器irplled7材料清单:
2011-11-8 12:43:44 上传
下载附件 (116.01 kb)
详情请见:
irs2980spbf.pdf(193.01 kb, 下载次数: 3)2011-11-8 12:45:23 上传
下载次数: 3
下载积分: 积分 -1
和
an-1171.pdf(195.11 kb, 下载次数: 1)2011-11-8 12:45:08 上传
下载次数: 1
下载积分: 积分 -1
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ir公司的irs2980采用该公司的控制和高压技术,实现简单高性能调光led驱动解决方案,包括调光led驱动控制器,滞后电流调整,闭环led电流调光控制,模拟/pwm调光输入,集成了高压稳压器,250ua微功耗起动,主要用在led照明/cfl替代灯以及led驱动模块.本文介绍了irs2980主要特性,方框图, 应用电路图以及90-250vac离线led驱动器irplled7参考设计主要特性,方框图, 电路图和材料清单.
the irs2980 utilizes international rectifier’s control and high-voltage technologies to realize a simple, high performance dimming led driver solution. this solution is based on a hysteretic topology where the high frequency ac output current is controlled by adjusting the oscillator frequency and duty cycle.
irs2980主要特性:
• dimming led driver controller
• hysteretic current regulation
• closed-loop led current dimming control
• analog/pwm dimming input
• internal high voltage regulator
• internal 15.6v zener clamp diode on vcc
• micropower startup (250μa)
• latch immunity and esd protection
led驱动器系统特性:
• single chip dimming solution
• simple led current dimming control method
• no external protection circuits required (fully internal)
• easy to use for fast design cycle time
• increased manufacturability and reliability
irs2980典型应用:
• led incandescent/cfl replacement lamps
• led driver module
2011-11-8 12:43:44 上传
下载附件 (16.91 kb)
图1. irs2980方框图
2011-11-8 12:43:44 上传
下载附件 (17.02 kb)
图2. irs2980应用电路图
采用irs2980的90-250vac离线led驱动器irplled7
solid state light sources are now available that offer viable alternatives to fluorescent and hid lamps and far surpass incandescent lamps. luminous efficacy expressed in lumens per watt has now reached levels enabling leds to be used for general illumination. high brightness leds also possess the added advantages of longer operating life span up to 50000 hours and greater robustness than other less efficient light sources making them suitable for outside applications such as street lighting.
high power leds are ideally driven with constant regulated dc current, requiring a driver or converter to provide the required current from an ac or dc power source. a simple single stage power converter based around the irs2980 led driver ic provides a controlled current output over a wide ac line or dc voltage input range.
the irplled7 evaluation board is an off line non-isolated constant current buck regulator led driver designed to supply a 350ma dc output current. the led output voltage can be up to 90% of the input voltage, operating from an ac line input voltage between 90 and 250vac 50/60hz. it also includes pwm dimming capability from 10% to 100% of light output controlled by an on board potentiometer.
2011-11-8 12:43:44 上传
下载附件 (56.92 kb)
图3. 90-250vac离线led驱动器外形图
90-250vac离线led驱动器主要特性:
featuring irs2980s hvic led driver
non-isolated buck regulator
90-250v ac input voltage
0-50v dc output voltage
regulated output current of 350ma
pwm dimmable
2011-11-8 12:43:44 上传
下载附件 (8.19 kb)
图4.90-250vac离线led驱动器irplled7方框图
2011-11-8 12:43:44 上传
下载附件 (37.53 kb)
图5. irplled7电路图
90-250vac离线led驱动器irplled7材料清单:
2011-11-8 12:43:44 上传
下载附件 (116.01 kb)
详情请见:
irs2980spbf.pdf(193.01 kb, 下载次数: 3)2011-11-8 12:45:23 上传
下载次数: 3
下载积分: 积分 -1
和
an-1171.pdf(195.11 kb, 下载次数: 1)2011-11-8 12:45:08 上传
下载次数: 1
下载积分: 积分 -1
外骨骼机器人的概述与分类
10款常见的稳压电源器件解析
音乐频谱LED显示屏驱动控制程序案例解析
双调光蘑菇灯与维修
监控系统中经常被忽略的故障原因
250VAC离线LED驱动解决方案
救灾现场,应急通信车来干嘛?
时钟分频原理详解
景嘉微获10万片9系GPU芯片大单；三星3nm客户订单大量转向台积电
plc编程入门_如何学习PLC编程
提高直升机航空电子设备的态势感知能力
美科学家为机器人视觉开发4D相机_能生成4D图像及捕捉近140度的信息
网友票选魅族最强5功能 多任务处理排第一
三星Fold评测 不要再让惊艳变成惊吓
iphone8什么时候上市?iphone8最新消息:增强现实体验,可能是iphone8的最大卖点?
数据信息大时代下，分布式存储将成为变局的突破点
物联网应用怎样和工厂与医疗相联系
大疆RoboMaster EP与机甲大师S1有何区别
纳米技术在航空航天工业中的潜力
电机驱动集成的故事