安森美半導體LED驅動方案

LED在光輸出、能效及成本方面得到了全面改善，同時具備了小巧、低壓工作及環保等眾多優勢，應用范圍也在不斷拓寬。未來，LED照明在通用照明、LCD背光、汽車照明等領域的增長前景尤為可觀。安森美半導體提供豐富的LED驅動器產品，可滿足各種LED照明應用需求。

方案特性：

LEDs are replacing traditional incandescent and halogen lighting sources in architectural, industrial, residential and the transportation lighting. The key challenge in powering LED’s is providing a constant current source. The evaluation board for the NCP3065/NCV3065 can be easily configured for a variety of constant current buck and boost

LED driver applications.

It describes a DC−DC converter circuits that can easily be configured to drive LEDs at several different output currents and can be configured for either AC or DC input. The NCP3065/NCV3065 can be configured in a several driver topologies to a drive string of LEDs: be it traditional low power LEDs or high brightness high power LEDs such as the Lumileds Luxeonâ K2 and Rebel series, the CREE XLAMPâ 4550 or XR series, the OSRAM OSTARâ, TopLEDâ and Golden Dragonâ.

方案原理圖：

參照PCB圖：