1.簡介
本文介紹采用PI LinkSwitch-PL系列非隔離單級(jí)LED驅(qū)動(dòng)器IC設(shè)計(jì)而成的針對(duì)B10型LED燈泡設(shè)計(jì)的高效率、超緊湊驅(qū)動(dòng)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(qū)動(dòng)器的設(shè)計(jì)目標(biāo)是高性能和小型化，使得驅(qū)動(dòng)器能滿足B10型燈泡并最大限度提高效率。
詳細(xì)閱讀：
針對(duì)B10型LED燈泡設(shè)計(jì)的高效率、超緊湊驅(qū)動(dòng)器(DER-297)
相關(guān)閱讀：
第一講：100W高可靠性LED球泡燈驅(qū)動(dòng)電源設(shè)計(jì)
第二講：150W高可靠性LED路燈驅(qū)動(dòng)電源設(shè)計(jì)
第三講：30W高可靠性LED T8燈管驅(qū)動(dòng)電源設(shè)計(jì)
第四講：能效高達(dá)85%的15W筒燈驅(qū)動(dòng)電源設(shè)計(jì)
第五講：5W-16W TRIAC調(diào)光LED照明驅(qū)動(dòng)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(guān)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(guī)格
1. 48 V, 93 mA Version
電路原理圖
Figure 3 – 48 V, 93 mA Schematic.
