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On Semi NCL30100 效率95% LED驱动解决方案

文章出处:8gled.com作者:格烁光电发表时间:2018-07-23
福建代孕-试管频道JCnf【助孕帮你忙】On Semi 公司的NCL30100是 效率大于95% 的LED驱动器控制器,开关频率高达700kHz,不需要输出电容,VCC工作范围从6.35 到18 V,可驱动一个或多个大功率LED,主要用在MR16 led照明,环境灯照明,太阳能LED,交通照明,室外照名和LED照明棒等。本文介绍了NCL30100主要特性,方框图,典型应用电路以及MR16应用电路图和MR16评估板材料清单,115Vac转换器设计案例电路图和相应的材料清单。
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Fixed Off Time Switched Mode LED Driver Controller

The NCL30100 is a compact switching regulator controller intended for space constrained constant current high?brightness LED driver applications where efficiency and small size are important. The controller is based on a peak current, quasi fixed?off time control architecture optimized for continuous conduction mode step?down (buck) operation. This allows the output filter capacitor to be ELiminated. In this configuration, a reverse buck topology is used to control a cost effective N?type MOSFET. Moreover, this controller employs negative current sensing thus minimizing power 泉州代孕-【让爱让家完整4FSF】婴儿频道dissipation in the current sense resistor. The off time is user adjustable through the selection of a small external capacitor, thus allowing the design to be optimized for a given switching frequency range. The control loop is designed to operate up to 700 kHz allowing the designer the flexibility to use a very small inductor for space constrained applications.

The device has been optimized to provide a flexible inductive step?down converter to drive one or more high power LED(s). The controller can also be used to implement non?isolated buck?boost driver topologies.

NCL30100主要特性:

Quasi?Fixed OFF Time, Peak Current Control Method

N?FET Based Controller Architecture

Up to 700 kHz Switching Frequency

Up to >95% Efficiency

No Output Capacitor Needed

VCC Operation from 6.35 ? 18 V

Adjustable Current Limit with Negative Sensing

Inherent Open LED Protected

Very Low Current Consumption at Startup

Undervoltage Lockout

Compact Thin TSOP?6 Pb?Free Package

?40 to + 125C Operating Temperature Range

This is a Pb?Free Device

NCL30100应用:

Low Voltage Halogen LED Replacement (MR 16)

LED Track Lighting

Landscape Lighting

Solar LED Applications

Transportation Lighting

12 V LED Bulb Replacement

Outdoor Area Lighting

LED Light Bars


图1。NCL30100方框图

图2。NCL30100典型LED转换器应用案例

图3。NCL30100案例设计电路图

图4。NCL30100案例设计PCB外形图
单层评估板材料清单(NL30100ASLPDGEVB)



图5。NCL30100 MR16应用电路图
MR16评估板材料清单(NL30100ADLRMGEVB)


图6。NCL30100 115Vac转换器设计案例电路图

NCL30100 115 Vac材料清单:



福建代孕-试管频道JCnf【助孕帮你忙】 On Semi NCL30100 效率95% LED驱动解决方案原创编辑请注明出来http://www.yzxinfa.com

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