A cost-effective PWM dimming method for LED lighting applications

作者：Chiu Huang Jen^*; Lo Yu Kang; Lin Yu Liang; Jane Gwan Chi

来源：International Journal of Circuit Theory and Applications, 2015, 43(3): 307-317.

DOI：10.1002/cta.1940

• cost effective
• LED lighting
• flyback PFC
• adaptive PWM dimming

This paper presents a novel cost-effective pulse-width-modulation (PWM) dimming method for light-emitting diode (LED) lighting applications. High efficiency, high power factor, circuit simplicity, and low cost can be achieved by a Flyback power factor correction converter with the studied adaptive PWM dimming method. The operation principles and design considerations of the proposed LED dimming method are analyzed and discussed. A 45W laboratory prototype has been built and tested to verify the feasibility of the proposed scheme.

• 出版日期2015-3