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

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, a...