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
Critical Conduction Mode (CrM) buck
Low EMI
Excellent line noise and transient rejection
Design Flexibility
Supports high- and low-side buck topologies
Wide input (90 VAC – 308 VAC) and output voltage range operation
3 family members cover power range for optimum device selection
Requires no inductor bias winding
Highest Reliability
Lowest component count
Comprehensive protection features with auto-restart Input and output overvoltage protection (OVP)
Output short-circuit protection
Open-loop protection
Advanced thermal control Thermal foldback ensures that light continues to be delivered at elevated temperatures
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