Dimmer Mode Detection Circuit for SSL Drivers

The patent implements a dynamic control circuit that automatically detects the dimmer type (leading-edge or trailing-edge) and adapts its operation accordingly. The control circuit switches between different control modes based on the detected dimmer configuration, enabling accurate dimming across multiple dimmer types without sacrificing precision. This dynamic adaptation resolves the contradiction by making the system flexible enough to handle various dimmers while maintaining high dimming accuracy through mode-specific control algorithms.

The control circuit incorporates automatic dimmer type detection functionality that enables the system to self-identify the connected dimmer type and select the appropriate control mode without user intervention. This self-service mechanism allows the control circuit to support multiple dimmer types while maintaining relatively simple operation for the end user, as the system automatically configures itself based on the detected dimmer configuration.

The patent employs parameter changes by implementing different control algorithms and parameters specific to each dimmer type. When leading-edge dimmers are detected, the control circuit applies optimization parameters suited for leading-edge phase cutting, while trailing-edge dimmers trigger a different set of parameters optimized for trailing-edge cutting. This parameter adaptation enables the system to maintain high dimming precision across the entire extended range by adjusting control parameters according to the specific dimmer type being used.