原标题：Cirrus CS161x 8W LED驱动器参考设计

　　Cirrus公司的CS1610/11/12/13是数字控制集成电路,集成了临界导通模式(CRM)升压转换器, 可提恭PFC和调光功能,恒定输出电流,效率高达90%,无闪烁调光,和IEC-61000-3-2兼容.CS1610/11用在控制准谐振反激拓扑,CS1612/13用于控制降压拓扑,CS1610/12用于120VAC电压,CS1611/13用于230VAC电压,主要用于可调光LED装饰灯,可调光LED照明,离线LED驱动器和商业照明.本文介绍了CS1610/11/12/13主要特性,方框图,典型应用电路以及典型反激电路图和降压电路图,以及CRD 1611-8W和CRD 1610-8W参考设计主要特性和指标.

　　The CS1610/11/12/13 is a digital control IC engineered to deliver a high-efficiency, cost-effective, flicker-free, phase-dimmable, solid-state lighting (SSL) solution for the incandescent lamp replacement market. The CS1610/11 is designed to control a quasi-resonant flyback topology. The CS1612/13 is designed to control a buck topology. The CS1610/12 and CS1611/13 are designed for 120VAC and 230VAC line voltage applications, respectively.

　　The CS1610/11/12/13 integrates a critical conduction mode (CRM) boost converter that provides power factor correction and dimmer compatibility with a constant output current, quasiresonant second stage. An adaptive dimmer compatibility algorithm controls the boost stage and dimmer compatibility operation mode to enable flicker-free operation to <2% output current with leading-edge, trailing-edge, and digital dimmers (dimmers with an integrated power supply).

　　CS1610/11/12/13主要特性:

　　• Best-in-Class Dimmer Compatibility

　　- Leading-edge (TRIAC) Dimmers

　　- Trailing-edge Dimmers

　　- Digital Dimmers (with Integrated Power Supply)

　　• Up to 90% Efficiency

　　• Flicker-free Dimming

　　• 0% Minimum Dimming Level

　　• Quasi-resonant Second Stage with Constant-current Output

　　Flyback and Buck

　　• Fast Startup

　　• Tight LED Current Regulation: Better than ±5%

　　• Primary-side Regulation (PSR)

　　• >0.9 Power Factor

　　• IEC-61000-3-2 Compliant

　　• Soft Start

　　• Protections:

　　- Output Open/Short

　　- Current-sense Resistor Open/Short

　　- External Overtemperature Using NTC

　　CS1610/11/12/13应用:

　　• Dimmable Retrofit LED Lamps

　　• Dimmable LED Luminaries

　　• Offline LED Drivers

　　• Commercial Lighting

　　图1.CS1610/11/12/13 方框图

　　图2.CS1610/11/12/13 典型应用电路图

　　图3.CS1610/11典型反激电路图

　　图4.CS1612/13典型降压电路图

　　CRD 1611-8W参考设计

　　The CRD 1611-8W reference design demonstrates the performance of the CS1611 resonant mode AC/ DC dimmable LED driver IC with a 550 mA output driving 4 LEDs in series. It offers best-in-class dimmer compatibility with leading edge, trailing edge, and digital dimmers. The form factor is targeted to fit into many LED bulb applications (A19, PAR).

　　CRD 1611-8W参考设计主要特性:

　　ƒƒ Quasi-resonant flyback with constant current output

　　ƒƒ Flicker-free dimming

　　ƒƒ Line voltage 230 VAC, ±10%

　　ƒƒ Rated input power: 8 W

　　ƒƒ Rated output power: 6.6 W

　　ƒƒ Efficiency: 83% at 550 mA, for 4 X LEDs in series

　　ƒƒ Low component count

　　ƒƒ Supports Cirrus Logic product CS1611

　　图5.CRD 1611-8W参考设计外形图

　　The CRD 1610-8W reference design demonstrates the performance of the CS1610 resonant mode AC/DC dimmable LED driver IC with a 470 mA output driving 5 X LEDs in series. It offers best-in-class dimmer compatibility with leading edge, trailing edge and digital dimmers. The form factor is targeted to fit into many LED bulb applications (A19, PAR).

　　CRD 1610-8W参考设计主要特性:

　　ƒƒ Quasi-resonant flyback with constant current output

　　ƒƒ Flicker-free dimming

　　ƒƒ Line voltage 120 VAC, ±10%

　　ƒƒ Rated input power: 8.1 W

　　ƒƒ Rated output power: 6.7 W

　　ƒƒ Efficiency: 84% at 470 mA, for 5 X LEDs in series

　　ƒƒ Low component count

　　ƒƒ Supports Cirrus Logic product CS1610

　　图5.CRD 1610-8W参考设计外形图

　　CRD 1610-8W和CRD 1611-8W参考设计主要指标: