Invention Grant
US09402293B2 Multi-bleeder mode control for improved LED driver performance 有权
多放样模式控制,提高LED驱动器性能

Multi-bleeder mode control for improved LED driver performance
Abstract:
Various examples directed to phase-dimming LED driver input circuitry having multiple bleeder circuits activated by a controller with multi-bleeder mode control are disclosed. In one example, the input circuitry may include multiple bleeder circuits controlled by the controller in an open-loop or closed-loop configuration. The controller may selectively activate or deactivate the multiple bleeder circuits based on the input line voltage, the dimming state, and the type of dimming being implemented to improve performance of the LED driver by preventing or reducing shimmering/blinking and by reducing bleeder loss.
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