解决方案搜寻

Phase Controlled Active Filter for an LED Driver

LED driver with a controlled active filter which is activated by a secondary-side phase detection circuit to enable the controlled active filter during low conduction angles of a dimmer circuit, such as a TRIAC dimmer. The controlled active filter can reduce shimmer and flicker of an LED load due to the asymmetry of TRIAC dimmers.

The controlled active filter can be used with single-staged LED drivers with power factor correction (PFC).