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

关键词:电源管理 AC/DC转换器 LED驱动器

时间:2017-07-13 10:47:00       作者:PowerInt       来源:中电网

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
Over-temperature shutdown provides protection during fault conditions

图1.LYTSwitch-1系列框图

图2.采用LYT1603D8 W, 60 V, 135 mA分隔离A19 LED驱动器

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

This engineering report describes a 50 V, 205 mA LED downlight driver with 3-waydimming functionality. It works off the low line input voltage mains (90 VAC to 132 VAC)and makes use of LYTSwitch-1 to deliver constant current, high efficiency, lowcomponent count and low cost solution in a non-isolated buck topology.

LYTSwitch-1 is a family of devices which is ideal for single-stage, high PF, constantcurrent LED bulbs and tubes. The family incorporates a high-voltage power MOSFET with a variable on-time CrM controller in a SO8 package. 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.High efficiency, accurate constant current regulation, 3-way dimming functionality and low component count were the target design goals.

This document is composed of the power supply specification, schematic, bill of materials (BOM), printed circuit layout, design spreadsheet, and performance data.

参考设计DER607主要特性:

Single-stage power factor corrected, PF >0.9
Accurate constant current regulation, ±5%
Highly energy efficient, 89% at 115 V
Low cost and low component count for compact PCB solution
3-way dimming capable (Variable resistor, PWM, and 0-10Vdc)
Integrated protection features
No-load output protection
Output short-circuit protection
Overcurrent protection
Thermal fold-back protection
Over temperature protection
No damage during line brown-out or brown-in conditions
Meets IEC 2.5 kV ring wave, 1 kV differential surge
Meets EN55015 conducted EMI

图3.参考设计DER607外形图(正面)

图4.参考设计DER607外形图(背面)
参考设计DER607主要指标:


图5.参考设计DER607电路图
参考设计DER607材料清单:



图6.参考设计DER607电感电路图

图7.参考设计DER607 PCB设计图(正面)

图8.参考设计DER607 PCB设计图(背面)
详情请见:
https://led-driver.power.com/sites/default/files/product-docs/lytswitch-1_family_datasheet.pdf
https://led-driver.power.com/sites/default/files/PDFFiles/der607.pdf
der607.pdf
lytswitch-1_family_datasheet.pdf

 

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