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.http://www.youerw.com/
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:
图9. 150W LED驱动器评估板PCB设计图
图10. 150W LED驱动器评估板PCB元件布局图:顶层
图11. 150W LED驱动器评估板PCB元件布局图:底层