On Semi NCL30160恒流高亮LED驱动解决方案
发布时间：2012-6-12 12:55
发布者：1770309616
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On Semi公司的NCL30160是恒流高亮LED驱动器,集成了1.0A MOSFET,输入电压从6.3V到40V,开关频率高达1.4MHz,其滞后控制在负载瞬变和PWM调光时具有良好的电源抑制和快速反应,不需要控制回路补偿,可调整LED电流,主要用在LED驱动器,恒流源,汽车照明,通用照明和工业照明.本文介绍了NCL30160主要特性,方框图,应用电路以及评估板NCL30160GEVB主要特性,电路图,材料清单和评估板NCL30160GEVB测试程序. NCL30160GEVB:Up to 40V, 1A NCL30160 LED Driver Buck Evaluation Board 1.0A Constant-Current Buck Regulator for Driving High Power LEDs The NCL30160 is an NFET hysteretic step−down, constant−current driver for high power LEDs. Ideal for automotive, industrial and general lighting applications utilizing minimal external components. The NCL30160 operates with an input voltage range from 6.3 V to 40 V. The hysteretic control gives good power supply rejection and fast response during load transients and PWM dimming to LED arrays of varying number and type. A dedicated PWM input (DIM/EN) enables wide range of pulsed dimming and a high switching frequency up to 1.4 MHz allows the use of smaller external components minimizing space and cost. Protection features include resistor−programmed constant LED current, shorted LED protection, under−voltage and thermal shutdown. The NCL30160 is available in a SOIC−8 package. NCL30160主要特性: • Integrated 1.0A MOSFET • VIN Range 6.3 V to 40 V • Short LED Shutdown Protection • Up to 1.4 MHz Switching Frequency • No Control Loop Compensation Required • Adjustable LED Current • Single Pin Brightness and Enable/Disable Control Using PWM • Supports All−Ceramic Output Capacitors and Capacitor−less Outputs • Thermal Shutdown Protection • Capable of 100% Duty Cycle Operation • This is a Pb−Free Device NCL30160典型应用: • LED Driver • Constant Current Source • Automotive Lighting • General Illumination • Industrial Lighting 
图1.NCL30160简化框图 
图2.NCL30160驱动一个LED的应用电路图(降压) NCL30160GEVB:高达40V, 1A 的NCL30160 LED驱动器降压评估板 NCL30160GEVB主要特性: Integrated MOSFET capable of 1.0 A Input voltage range from 6.3 V to 40 V Dimming capability using PWM LED short protection Thermal shutdown protection 
图3.评估板NCL30160GEVB外形图 
图4.评估板NCL30160GEVB电路图 评估板NCL30160GEVB材料清单: 
图5.评估板NCL30160GEVB测试程序图 所需要设备: 
详情请见: 
NCL30160-D[1].pdf
(216.66 KB)
NCL30160GEVB_SCHEMATIC[1].pdf
(69.26 KB)
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