1.简介
本文介绍采用PI LinkSwitch-PL系列非隔离单级LED驱动器IC设计而成的针对B10型LED灯泡设计的高效率、超紧凑驱动器——DER-297。它的单一恒流输出功率为4.5W，可轻松配置从35V到100V的输出电压，如下表所示。
这款驱动器的设计目标是高性能和小型化，使得驱动器能满足B10型灯泡并最大限度提高效率。
详细阅读：
针对B10型LED灯泡设计的高效率、超紧凑驱动器(DER-297)
相关阅读：
第一讲：100W高可靠性LED球泡灯驱动电源设计
第二讲：150W高可靠性LED路灯驱动电源设计
第三讲：30W高可靠性LED T8灯管驱动电源设计
第四讲：能效高达85%的15W筒灯驱动电源设计
第五讲：5W-16W TRIAC调光LED照明驱动解决方案
Figure 1 – Size of a Populated Circuit Board. Top Side
Figure 2 – Size of a Populated Circuit Board. Bottom Side
关键特性：
1. Single-stage power factor corrected and accurate constant current (CC) output
2.Low cost, low component count and small PCB footprint solution
3.Highly energy efficient, >87% at 115 VAC input for 48 V and >87% for 96 V output
4.Superior performance and end user experience
·Fast start-up time (<300 ms) – no perceptible delay
5.Integrated protection and reliability features
·Single shot no-load protection / output short-circuit protected with auto-recovery
·Auto-recovering thermal shutdown with large hysteresis protects both components and PCB
·No damage during brown-out conditions
6.PF >0.95 at 115 VAC
7.%A THD <20% at 115 VAC
8.Meets IEC ring wave, differential line surge and EN55015 conducted EMI
电源规格
1. 48 V, 93 mA Version
电路原理图
Figure 3 – 48 V, 93 mA Schematic.
