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[原创] Infineon ICL8105可配置40W LED驱动方案

关键词:电源管理 LED驱动器 PFC ICL8105

时间:2016-12-16 11:24:07       作者:Infineon       来源:中电网

infineon公司的ICL8105是基于微控制器的高性能具有功率因素修正(PFC)的数字单级反激控制器,功率因素高达0.99,THD<10%,多模式工作可在准谐振(QRM),不连续模式(DCM)和主动突发模式(ABM)间自动转换.支持通用输入电压85 – 305V AC,集成了600V起动单元,主要用在5W-80W LED照明的电子控制装置.本文介绍了ICL8105产品亮点和主要特性,应用电路以及采用CDM10V调光的ICL8105 40W参考设计主要特性和电指标,电路图,材料清单和PCB设计图.

The ICL8105 is a high performance microcontroller-based digital single-stage flyback controller with powerfactor correction (PFC) for constant output current applications. The IC is available in a DSO-8 package andsupports a wide feature set, requiring a minimum of external components.The digital engine offers thepossibility to configure operational parameters and protection modes, which helps to ease the design phaseand allows a reduced number of hardware variants in production. Accurate primary side output current control is implemented to eliminate the need for secondary side feedback circuitry.

The ICL8105 is a digital AC/DC flyback controller with Power Factor Correction (PFC). The PFC function enablesa rectified sinusoidal input current waveform with a power factor typically up to 0.99 and THD<10% for a widerange of operating conditions. ICL8105 provides primary side constant output current control that avoids thesecondary side control feedback loop circuitry usually needed in isolated power converters. This approachsupports a low part count that is necessary to build up the application. ICL8105 has multi-mode operationsand it selects the best mode of operation based on operating conditions. The multi-mode operation willautomatically switch between quasi-resonant mode (QRM) and discontinuous mode (DCM) and active burstmode (ABM). In addition, ICL8105 supports both secondary side 0 - 10 V dimming and primary side microcontroller dimming application. Digital and RF interfaces can be supported by a microcontroller using adigital-to-analog converter.

The ICL8105 provides a high flexibility in the design-in of the application. A graphic user interface (GUI) toolsupports users to tune a set of configurable parameters. The configuration can be done via a single pin UARTinterface at pin DIM/UART.

ICL8105产品亮点:

• Highly accurate primary side controlled output current (Line/load regulation typical within +/- 3%)
• High power quality (typical PF up to 0.99 and THD < 10%)
• High Efficiency (up to 91%)
• Configurable output current with no BOM change
• Supports universal input voltage (85 – 305 V AC)
• Supports wide output load voltage (up to 4 times of minimum output load voltage)
• Ideal for application with dimming signal from micro-controller on primary side
• Supports fully isolated 0 – 10 V dimming with Infineon CDM10V
• Supports low output current dimming.
• Low standby power

ICL8105主要特性:

• Single stage QR Flyback with PFC and high precision primary side controlled constant current output
• Excellent line and load regulation
• Supports AC input (45 ~ 65 Hz) and/or DC input voltage operation
• Integrated 600 V startup cell
• Low Bill Of Material (BOM)
• Configurable parameters,e.g. adjustable voltage and current ranges, protection modes
• Supports non-dimmed and/or dimmed applications.
• Intelligent thermal management with adaptive thermal protection
ICL8105应用:
• Electronic control gear for LED luminaires (5 W to 80 W)


图1.ICL8105典型应用1(初级边微控制器调光)

图2.ICL8105典型应用2(次级边0-10V调光)

采用CDM10V调光的ICL8105 40W参考设计

The ICL8105 40W reference design is a digitally configurable LED driver with a universal input of 90–305 VAC, a wide output load range of 16–45 VDC and isolated 0–10 V dimming (with CDM10V). Please refer to the next page for the main design features of this board based on Infineon’s ICL8105 and CDM10V.

图3.采用CDM10V适配板和配置连接器的ICL8105 40W参考设计外形图

ICL8105 40W参考设计主要特性:

 Single-stage flyback with power factor correction (PFC) and high-precision primary side-controlled constant current output
 Excellent current accuracy (±3%) across universal input voltage range (90 to 305 Vac) and wide output voltage range (18 V – 45 V)
 Integrated 600 V HV cell for fast startup
 High efficiency with quasi-resonant (QR) operation
 Low dimming output with discontinuous conduction mode (DCM) and active burst mode (ABM) operation
 High power factor (PF) and low input current total harmonic distortion (iTHD) with advanced switching cycle modulation scheme
 Low Bill Of Materials (BOM)
 Configurable dimming curve to either linear or quadratic (eye-adaptive).
 Configurable output current at minimum dimming input (from 10% to 1%)
 Quick design and variant handling supported by digital parameter configurability with .dp vision GUI – e.g. output current setting, dimming curve shape selection, protection handling and operation fine-tuning.
 Supports transformer-less IEC60929-compliant isolated 0–10 V dimming using CDM10V.

ICL8105 40W参考设计电指标:


图4.ICL8105 40W参考设计电路图
ICL8105 40W参考设计材料清单:


适配板材料清单:


图5.ICL8105 40W参考设计PCB设计图(顶层)

图6.ICL8105 40W参考设计PCB设计图(底层)

图7.反激变压器(T1)指标
详情请见:
http://www.infineon.com/dgdl/Infineon-ICL8105-DS-v02_00-EN.pdf?fileId=5546d462518ffd8501521b9ab3a52b14
http://www.infineon.com/dgdl/Infineon-ICL8105+40W+Ref+Design+with+CDM10V+Application+Note+-AN-v01_00-EN.pdf?fileId=5546d4625696ed760156dfd4556e09e0
Infineon-ICL8105-DS-v02_00-EN.pdf
Infineon-ICL8105 40W Ref Design with CDM10V Application Note -AN-v01_00-EN.pdf

 

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