[原创] PowerIntLYT1403D三种调光10W LED驱动器参考设计DER607

PowerInt公司的LYTSwitch-1系列是具有PFC和恒流输出的单级LED驱动器.器件集成了带有可变开态CrM控制器的725V高压MOSFET.功率因素大于0.9,效率大于85%,线路输入电压±3% CC稳压,输入电压90 VAC – 308 VAC,主要用在LED灯和LED灯管.本文介绍了LYTSwitch-1系列产品亮点和框图,采用LYT1603D8 W, 60 V, 135 mA分隔离A19 LED驱动器电路图,以及采用LYTSwitchTM-1 LYT1403D 的10 W三种调光非隔离降压LED驱动器参考设计DER607主要特性和指标,电路图,材料清单和PCB设计图.

The LYTSwitch™-1 family is ideal for single-stage, high PF, constant current LED bulbs and tubes.

The family incorporates a high-voltage MOSFET with a variable on-time CrM controller. Extensive protection features with minimum external components provide industry leading power density and functionality. The devices can be used in high-side or low-side non-isolated buck topology.

The CrM operation results in low turn-on losses and reduces cost of output diode (slower reverse recovery). LYTSwitch-1 devices are suitable for applications from 2 W to 22 W. See Table 1 for selection guidance.

LYTSwitch-1系列产品亮点:

Single-Stage PFC + Accurate CC Output
±3% CC regulation in single line input voltage applications
Power factor >0.9
High efficiency >93%
Robust 725 V MOSFET for increased line voltage surge performance ..

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