方案名稱：iwatt（艾瓦特）20W以內可控硅調光方案
品牌名稱：艾瓦特
方案特點;
整體成本簡單優勢,高低壓對調光都能達到完美的調光效果.非隔離的應用，只需要單個繞組的簡單，低成本電感. 基本能兼容市面上百分之90以上的兼容器,針對絕大部分調光器的調光深度可低至1%相比其他品牌方案（如：NXP/MPS/TI等）省了Bleeder電路, VCC供電電壓只需5V就可啟動,輸出電壓范圍比較寬。
特點 隔離/非隔離離線120VAC / 230VAC LED驅動高達20W的輸出功率寬線的頻率范圍（從45Hz至66hz）符合IEC61000-3-2諧波電流要求總諧波失真小于20%的PF > 0.92優良的調光器的兼容性寬調光范圍1%到100%共振控制，以實現高效率（典型> 85%不調光）LED過流保護和過溫關機緊調節LED電流（±5%）快速啟動（小于0.5s沒有調光）
4 規格; 隔離/非隔離離線120VAC / 230VAC SOP8封裝
5 應用范圍：蠟燭燈, GU10, PAR燈, BR燈, R燈, 球泡燈等..
Isolated/non-isolated off-line 120VAC/230VAC LED
driver up to 25W (Note 1)
●● Wide line frequency range (from 45Hz to 66Hz)
●● Meets IEC61000-3-2 current harmonic requirement
●● Total harmonic distortion < 20% with PF > 0.92
●● Excellent dimmer compatibility
xx Leading-edge dimmer
xx Trailing-edge dimmer
xx Digital smart dimmer
●● Wide dimming range of 1% to 100%
●● Intelligent digital control integrates current sink and
VCC maintenance function into power switching circuit
●● Advanced IC power management and voltage sensing
enables the use of off-the-shelf inductor
