《用于能源之星LED照明应用的离线LED驱动器参考设计》.pdf

TND371/D Rev. 0, Aug − 2009 Offline LED Driver Intended for ENERGY STAR® Residential LED Luminaire Applications Reference Design Documentation Package Disclaimer: ON Semiconductor is providing this reference design documentation package “AS IS” and the recipient assumes all risk associated with the use and/or commercialization of this design package. No licenses to ON Semiconductor’s or any third party’s Intellectual Property is conveyed by the transfer of this documentation. This reference design documentation package is provided only to assist the customers in evaluation and feasibility assessment of the reference design. It is expected that users may make further refinements to meet specific performance goals. 2 TND371/D TND371/D Offline LED Driver Intended for ENERGY STAR Residential LED Luminaire Applications TECHNICAL NOTE Overview This reference document describes a built−and−tested, The bulk capacitor fills in the missing power providing a GreenPoint® solution for an isolated 8 W constant current more constant input to the switching regulator maintaining LED driver which is intended to support the residential power flow to the load. power factor requirements of the DoE ENERGY STAR This configuration comes at the expense of poor Standard for Solid State Lighting Luminaires (Version 1.1