原标题：On Semi NCL30030 150W LED驱动器参考设计

　　On Semi公司的NCL30030集成了功率因子修正(PFC)和准谐振反激功能,实现紧凑和高效LED驱动器,以满足高性能LED照明的需要.工作范围9-30V,内置过压保护,主要用在大功率LED驱动器,商用LED灯,LED标识电源,适配器,开架电源和LED电子控制装置.本文介绍了NCL30030主要特性,框图, 应用电路,以及150W高性能LED驱动器评估板主要特性,电路图,材料清单和PCB设计图,元件布局图.

　　This combination IC integrates power factor correction (PFC) and quasi−resonant flyback functionality necessary to implement a compact and highly efficient LED driver for high performance LED lighting applications.

　　The PFC stage utilizes a proprietary multiplier architecture to achieve low harmonic distortion and near−unity power factor while operating in a Critical Conduction Mode (CrM). The circuit incorporates all the features necessary for building a robust and compact PFC stage while minimizing the number of external components.

　　The quasi−resonant current−mode flyback stage features a proprietary valley−lockout circuitry, ensuring stable valley switching.

　　This system works down to the 4th valley and toggles to a frequency foldback mode with a minimum frequency clamp beyond the 4th valley to eliminate audible noise. Skip mode operation allows excellent efficiency in light load conditions while consuming very low standby power consumption.

　　NCL30030通用特性:

　　• Wide VCC Range from 9 V to 30 V with Built−in Overvoltage Protection

　　• High−Voltage Startup Circuit

　　• Integrated High−Voltage Brown−Out Detector

　　• Fault Input for Severe Fault Conditions, NTC Compatible (Latch and Auto−Recovery Options)

　　• 0.5 A / 0.8 A Source / Sink Gate Drivers

　　• Internal Temperature Shutdown

　　NCL30030 PFC控制器特性:

　　• Critical Conduction Mode with a Multiplier

　　• Accurate Overvoltage Protection

　　• Optional Bi−Level Line−Dependent Output Voltage (2:1 / 1.77:1 Versions)

　　• Fast Line / Load Transient Compensation

　　• Boost Diode Short−Circuit Protection

　　• Feed−Forward for Improved Operation across Line and Load

　　• Adjustable PFC Disable Threshold Based on Output Power

　　NCL30030 QR反激控制器特性:

　　• Valley Switching Operation with Valley−Lockout for Noise−Free Operation

　　• Frequency Foldback with Minimum Frequency Clamp for Highest Performance in Standby Mode

　　• Minimum Frequency Clamp Eliminates Audible Noise

　　• Timer−Based Overload Protection (Latched or Auto−Recovery options)

　　• Adjustable Overpower Protection

　　• Winding and Output Diode Short−Circuit Protection

　　• 4 ms Soft−Start Timer

　　• These are Pb−Free Devices

　　NCL30030典型应用:

　　• High Power LED Drivers

　　• Commercial LED ballasts

　　• LED Signage Power Supplies

　　• Adapters

　　• Open Frame Power Supplies

　　• LED Electronic Control Gear

　　图1. NCL30030框图

　　图2. NCL30030应用电路

　　150W高性能LED驱动器评估板

　　This manual covers the specification, theory of operation, testing and construction of the NCL30030GEVB evaluation board. The NCL30030 board demonstrates a 150 W high performance LED driver intended for commercial/industrial applications. The NCL30030 combines a CrM PFC boost converter and a QR flyback converter in a single controller. An integrated HV start up is included in the NCL30030.

　　150W LED驱动器评估板主要特性:

　　As illustrated, the key features of this evaluation board include:

　　• Wide Mains including Support for 277 V ac US Commercial Line Voltage

　　• Low THD across Line and Load

　　• High Power Factor across Wide Line and Load

　　• Remote On/Off (Mains Isolated)

　　• Integrated Auto−recovery Fault Protection (can be latched by Choice of Options)

　　♦ On Board Over Temperature Shutdown via NCL30030 Fault Input Pin

　　♦ LED Module Over Temperature Foldback Input (a remote PTC on LED Array)

　　♦ Over Voltage

　　• CC/CV Modes

　　• Can be Configured for several Dimming Modes

　　♦ 1 − 10 V dc

　　♦ 0 – 5 V dc Analog

　　♦ 0 – 5 V PWM

　　♦ Bi−level

　　150W LED驱动器评估板指标:

　　图3. 150W LED驱动器评估板外形图

　　图4. 150W LED驱动器评估板电路图(1):输入电路

　　图5. 150W LED驱动器评估板电路图(2):PFC电路

　　图6. 150W LED驱动器评估板电路图(3):反激电路

　　图7. 150W LED驱动器评估板电路图(4):控制电路

　　图8. 150W LED驱动器评估板电路图(5):调光接口

　　150W LED驱动器评估板材料清单: