PowerInt LNK407EG 15 W LED驱动方案(DER278)
PowerInt公司的LNK403-409EG/413-419EG LinkSwitch-PH系列是LED驱动器,具有PF>0.9,TRIAC调光兼容(LNK403-409)和高效率,单级PF和恒流控制器不需要PFC和电解电容等无源元件.器件集成了725V功率MOSFET,连续模式PWM控制器,用于自偏压的高压开关电流源,逐个周期限流和滞后热关断电路,主要用在离线LED驱动器.本文介绍了LinkSwitch-PH系列主要特性, 方框图, 典型应用电路图, 通用输入7W和14W LED驱动器方框图,以及采用LNK407EG的无电解电容高效(大于90%),高功率因素(大于0.9) 15W LED驱动器参考设计主要特性,电路图,材料清单.
LNK403-409EG/413-419EG LinkSwitch-PH Family
LED Driver IC, Single-Stage PFC, Primary-Side Constant Current Control and TRIAC Dimming/Non-Dimming Device Options
The LinkSwitch-PH dramatically simplifies implementation of LED drivers requiring PF >0.9, TRIAC dimmer capability (LNK403-409) and high efficiency. The single-stage PF and constant current controller eliminates passive circuitry required for power factor correction and electrolytic bulk capacitor. The advanced primary-side control techniques used by the LinkSwitch-PH device provide accurate constant current control while eliminating the need for an optocoupler and secondary-side current control circuitry.
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