原标题：IDT ZSLS7031峰值电流模式高亮LED反激驱动方案

　　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

　　演示板ZSLS7031KIT-D1

　　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.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

　　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.PQ16/20变压器外形图

　　演示板ZSLS7031KIT-D1材料清单:

　　详情请见:

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

IDT_ZSLS7031_DST_20160126.pdf