原标题：Infineon XDPL8105 40W数字配置LED驱动器解决方案

　　infineon公司的XDPL8105是高性能基于己于微控制器的数字单级反激控制器,具有功率因素修正(PFC)功能,采用DSO-8封装,支持广泛的设定,需要外接元件达到最低数.效率高达91%,通用输入电压85 – 305 V AC,主要用在LED照明的数字控制.本文介绍了XDPL8105产品亮点和主要特性,应用电路,以及XDPL8105 40W参考设计主要特性,电路图,材料清单和PCB设计图.

　　The XDPL8105 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 XDPL8105 is a digital AC/DC flyback controller with Power Factor Correction (PFC). The PFC functionenables a rectified sinusoidal input current waveform with a power factor typically up to 0.99 and THD < 10%for a wide range of operating conditions. XDPL8105 provides primary side constant output current control thatavoids the secondary side control feedback loop circuitry usually needed in isolated power converters. Thisapproach supports a low part count that is necessary to build up the application. XDPL8105 has multi-modeoperations and it selects the best mode of operation based on operating conditions. The multi-modeoperation will automatically switch between quasi-resonant mode (QRM) and discontinuous mode (DCM) andactive burst mode (ABM). In addition, XDPL8105 supports both secondary side 0 - 10 V dimming and primaryside micro-controller dimming application. Digital and RF interfaces can be supported by a microcontrollerusing a digital-to-analog converter.

　　The XDPL8105 provides a high flexibility in the design-in of the application. A graphic user interface (GUI) toolcalled .dp Vision supports users to tune a set of configurable parameters. The configuration can be done via asingle pin UART interface at pin DIM/UART.

　　XDPL8105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

　　Summary of Features:

　　Programmable constant current output with primary side regulation

　　Supports AC and DC input

　　Nominal input voltage range 100VAC – 277VAC or 127VDC – 430VDC

　　Reference board efficiency > 90%

　　Power factor >0.9 and THD < 15% over wide load range

　　Output voltage range can vary by a factor of 4 (e.g. 14V-56V)

　　Highly accurate primary side control output current typ. ±3%

　　Temperature guard with adaptive thermal management with on-chip sensor

　　Digital control selects automatically best mode of operation, depending on actual requirements

　　QRM (quasi resonant mode)

　　DCM (discontinuous conduction mode)

　　ABM (active burst mode)

　　Digital parameters

　　Configurable brown-out and brown-in protections

　　Relevant error conditions are monitored and protected

　　Undervoltage

　　Overvoltage

　　Open load

　　Output shorted

　　Benefits:

　　The XDPL8105 enables to implement high performance and innovative value LED driver with small effort

　　Reduced BoM minimizes system cost and increases flexibility

　　High reliability features improve lifetime of the driver

　　Fast design cycle reduces time to market and efforts for value products

　　Supply chain efficiency optimizes stock keeping and enables high flexibility

　　Target Applications:

　　Dimmable LED driver with constant current primary regulation

　　XDPL8105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

　　XDPL8105应用:

　　• Electronic control gear for LED luminaires (5 W to 80 W)

　　图1.XDPL8105典型应用1(初级边微控制器调光)

　　图2.XDPL8105典型应用2(次级边0-10V调光)

　　XDPL8105 40W参考设计

　　The XDPL8105 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 XDPL8105 and CDM10V.

　　图3.带CDM10V适配板的XDPL8105 40W参考设计外形图

　　XDPL8105 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.

　　XDPL8105 40W参考设计电指标:

　　XDPL8105 40W参考设计主板材料清单:

　　详情请见:

Infineon-XDPL8105-DS-v01_00-EN.pdf

Infineon-ApplicationNote_ReferenceBoard_XDPL8105_40W-AN-v01_00-EN.pdf