×

Dimmable LED driver and method for controlling the same

  • US 9,113,516 B2
  • Filed: 05/03/2012
  • Issued: 08/18/2015
  • Est. Priority Date: 05/06/2011
  • Status: Expired due to Fees
First Claim
Patent Images

1. A dimmable LED driver adapted to be operated with a dimmer that is configured to generate a predetermined conductive angle, wherein the dimmable LED driver comprises:

  • a rectifier configured to convert an alternating current output by the dimmer to a direct current,a buck PFC block configured to adjust an output voltage of the direct current so as to obtain a stable output voltage,a second buck DC/DC block configured to realize output of a constant current after the stable output voltage is realized,a dimming block configured to, after realizing output of the constant current, accomplish a dimming function jointly with the second buck DC/DC block, andan MCU configured to control the buck PFC block, the second buck DC/DC block and the dimming block.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×