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[原创] IDT ZSLS7031隔离和非隔离反激LED驱动方案

关键词:电源管理 LED驱动器 PFC ZSLS7031

时间:2017-01-20 10:30:54       作者:IDT       来源:中电网

IDT公司的ZSLS7031是带有有源PFC的隔离和非隔离反激LED驱动器,输入电压从85VAC到265VAC,集成了过压和过流保护以及热关断,功率因素大于0.95,具有最小化材料清单(BOM),工作温度-45°C到105°C,主要用在LED灯,LED灯和通用LED照明.本文介绍了ZSLS7031优势和主要特性,框图,典型应用电路以及演示板ZSLS7031KIT-D1主要特性,电路图,材料清单和PCB设计图.

The ZSLS7031 is a primary-side controlled, peak-current-mode high-brightness LED flyback driver that supports both isolated and non-isolated designs with active power factor correction (PFC).

The device works at a constant frequency in discontinuous conduction mode to provide con-stant power to the output. It eliminates the need for an opto-coupler, TL431 shunt regulator, or any other type of secondary-side feedback device. It operates from a wide input voltage range of 85VAC to 265VAC.

The ZSLS7031 integrates over-current and over-voltage protection, as well as a thermal shutdown to halt the switching action in the event of abnormally high operating temperatures.

ZSLS7031优势:

• High efficiency

• Minimum bill of materials

• Small form-factor package

• No loop compensation required

• Isolated and non-isolated applications

ZSLS7031主要特性:

• Power factor PF > 0.95 depending on application

• Wide application input voltage range: 85V to 265VAC

• Internal over-temperature protection

• Output over-voltage protection (OVP)

• Output over-current protection (OCP) on primary side

Available Support

• Evaluation Kit

ZSLS7031物理特性:

• Operating temperature:-45°C to 105°C

• Maximum junction temperature: 150°C

• Package: MSOP-8, RoHS-compliant

ZSLS7031典型应用:

• LED bulb lamps

• LED tube lamps

• General LED lighting

图1.ZSLS7031框图

图2.ZSLS7031典型隔离应用电路图(1)

图3.ZSLS7031典型隔离应用电路图(2)

图4.ZSLS7031典型非隔离应用电路图

演示板ZSLS7031KIT-D1

The ZSLS7031 LED driver IC is designed to work in buck-boost and fly-back topologies. The circuit operates with peak current detection and in constant frequency mode.

The ZSLS7031KIT-D1 application demonstrates the following features:

• Universal supply voltage range (85VAC to 265VAC can be applied)

• Active power factor correction to power factor values of typically over 90%

• High efficiency of typically over 85%

• Few external components

• Over-current, over-voltage, and over-temperature protection

• 15 W constant power output

• Loads from 9 (about 24V forward voltage) to 19 (52V) LEDs; if operating with 230VAC, loads down to 6 LEDs (17V) can be used

• Quick start

图5.演示板ZSLS7031KIT-D1外形图

The ZSLS7031KIT-D1 Demonstration Kit includes the following:

• ZSLS7031PCB-D1 Demonstration Board – 17W Flyback Converter

• ZSLS7031ZI1R (MSOP8 3x3mm) 5 IC samples

• ZSLS7031KIT-D1 Start-Up Information

演示板ZSLS7031KIT-D1主要特性:

• Universal supply voltage range (85VAC to 265VAC can be applied)

• Active power factor correction to power factor values of typically over 90%

• High efficiency of typically over 85%

• Few external components

• Over-current, over-voltage, and over-temperature protection

• 15 W constant power output

• Loads from 9 (about 24V forward voltage) to 19 (52V) LEDs; if operating with 230VAC, loads down to 6 LEDs (17V) can be used

• Quick start

图6.演示板ZSLS7031KIT-D1电路图

演示板ZSLS7031KIT-D1材料清单:

图7.演示板ZSLS7031KIT-D1 PCB设计图

详情请见:

http://www.idt.com/products/power-management/led-drivers/zsls7031-isolated-and-non-isolated-flyback-led-driver-active-pfc

IDT_ZSLS7031_DST_20160126.pdf

IDT_ZSLS7031KIT-D1-Demo-Kit-Description-160419_MAN_20160422.pdf

 

 

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