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[原创] IDT ZSLS7031峰值电流模式高亮LED反激驱动方案

关键词:电源管理 DC/DC转换器 LED驱动器

时间:2017-04-12 10:26:57       作者:IDT       来源:中电网

IDT公司的ZSLS7031是初级边控制的峰值电流模式高亮LED反激驱动器,具有主动功率因素修正(PFC),支持隔离和非隔离设计,不需要光耦器件,不需要回路补偿,输入电压85VAC 到 265VAC,功率因素大于0.95,主要用在LED灯,LED管灯和通用LED照明.本文介绍了ZSLS7031主要优势和特性,功能框图,应用电路,以及演示板ZSLS7031KIT-D1主要特性,电路图,材料清单,变压器数据和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 constant 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主要优势:

• 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

ZSLS7031典型应用:




图1.ZSLS7031框图

图2.ZSLS7031隔离应用电路

图3.ZSLS7031非隔离应用电路

演示板ZSLS7031KIT-D1

IDT’s ZSLS7031KIT-D1 Demonstration Kit hardware is designed for ZSLS7031 evaluation, demonstration, laboratory setup, and module development only. The ZSLS7031KIT-D1 Demonstration Kit hardware must not be used for module production or production test setups.
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

图4.演示板ZSLS7031KIT-D1外形图

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5.演示板ZSLS7031KIT-D1电路图

图6.演示板ZSLS7031KIT-D1 PCB设计图

演示板ZSLS7031KIT-D1变压器数据:

The TR transformer included on the Demonstration Board meets the following specifications:
• Primary inductance LP 650μH @ 10kHz
• Primary leakage inductance LK < 20μH @ 10kHz
• Electrical strength 3kV, 50/60Hz, 1 min
PQ16/20 Transformer

图7.PQ16/20变压器外形图
演示板ZSLS7031KIT-D1材料清单:


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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