Powerint LNK409EG 25W T8管LED驱动解决方案(DER287)

Powerint公司的25W T8管灯LED驱动器采用LinkSwitchTM-PH LNK409EG器件,输入电压180 VAC到265 VAC,输出电压约100V,输出电流250A.该驱动器采用非隔离的降压-升压托扑,PFC和低THD(小于25%)和高效率(大于91%),和IEC61000-3-2 CLASS C兼容,不需要控制回路补偿和输出电流检测.本文介绍了T8管LED驱动器主要指标,电路图和材料清单.

T8 25 W, Non-Isolated, Buck-Boost Topology, Power Factor Corrected, LED Driver Using
LinkSwitchTM-PH LNK409EG

This document describes a non-isolated, power factor corrected, low THD, high-efficiency LED driver designed to drive ~100 V LED string at 250 mA from an input voltage range of 180 VAC to 265 VAC.

The LinkSwitch-PH has been developed to cost effectively implement a single-stage power factor corrected LED driver and primary-side constant-current control. The LinkSwitch-PH controller is optimized for LED driver applications and requires minimal external parts. It provides control of the output current through the LED load without the use of an optocoupler.
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