原标题：Infineon ICL8105+CDM10V 40W数字配置LED驱动方案

　　infineon公司的ICL8105是集成了功率因素修正(PFC)的数字反激控制器,PF高达0.99,THD<10%,效率高达91%,支持通用输入电压(85V-305V AC),主要用在5 W到 80 W的LED照明.本文介绍了ICL8105产品亮点和主要特性,几种应用电路,以及40W参考设计REF-ICL8105-CDM10V主要特性和电指标,电路图,材料清单和PCB元件布局图.

　　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 UART interface at pin DIM/UART.

　　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.

　　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典型应用电路(1):初级边微控制调光

　　图2.ICL8105典型应用电路(2):次级边0-10V调光

　　40W参考设计REF-ICL8105-CDM10V

　　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.

　　40W参考设计REF-ICL8105-CDM10V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.

　　40W参考设计REF-ICL8105-CDM10V电指标:

　　图3.40W参考设计REF-ICL8105-CDM10V适配板和配置连接器外形图

　　40W参考设计REF-ICL8105-CDM10V材料清单:

　　详情请见:

Infineon-ICL8105-DS-v02_00-EN.pdf

Infineon-ICL8105 40W Ref Design with CDM10V Application Note -AN-v01_00-EN.pdf