1.簡介
本文介紹采用PI LinkSwitch-PL系列非隔離單級LED驅動器IC設計而成的針對B10型LED燈泡設計的高效率、超緊湊驅動器——DER-297。它的單一恒流輸出功率為4.5W，可輕松配置從35V到100V的輸出電壓，如下表所示。
這款驅動器的設計目標是高性能和小型化，使得驅動器能滿足B10型燈泡并最大限度提高效率。
詳細閱讀：
針對B10型LED燈泡設計的高效率、超緊湊驅動器(DER-297)
相關閱讀：
第一講：100W高可靠性LED球泡燈驅動電源設計
第二講：150W高可靠性LED路燈驅動電源設計
第三講：30W高可靠性LED T8燈管驅動電源設計
第四講：能效高達85%的15W筒燈驅動電源設計
第五講：5W-16W TRIAC調光LED照明驅動解決方案
Figure 1 – Size of a Populated Circuit Board. Top Side
Figure 2 – Size of a Populated Circuit Board. Bottom Side
關鍵特性：
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
電源規格
1. 48 V, 93 mA Version
電路原理圖
Figure 3 – 48 V, 93 mA Schematic.
