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: