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AN75

High Power Factor LED Replacement T8 Fluorescent Tube using the AL9910 High Voltage LED Controller

Diodes Incorporated. 

AN75

Figure 6 LED driver power factor

Conclusion

This application note provides a simple tool to design an offline LED driver using the AL9910 high

voltage LED controller. It provides a high level of efficiency as well as LED current control over a wide

range of input voltages. Moreover the document explains how to design a system with passive power

factor correction to achieve PF greater than 0.7, allowing compliant with emergent international solid

state lighting standards.

Issue 1 – January 2011

11

© Diodes Incorporated 2010

www.diodes.com

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