Light Driver Output Correction Circuit for Ripple Compensation

The patent introduces an intermediary correction circuit between the converter output and the feedback loop. This correction circuit includes a capacitor connected in parallel with the load and a resistor connected in series with the capacitor, forming an RC network that processes the output signal. This intermediary circuit isolates the feedback loop from direct exposure to output ripple while still allowing accurate DC level measurement, thus resolving the contradiction between stability and measurement precision.

The patent employs a feedback mechanism where the output signal is fed back through the correction circuit to adjust the converter operation. The feedback loop continuously monitors the output and makes corrections, but the correction circuit ensures that only the accurate DC component is fed back, filtering out the ripple effects. This sophisticated feedback approach maintains both stability and measurement precision simultaneously.

The correction circuit serves as an intermediary that sits between the simple converter topology and the feedback loop. It processes the output signal by filtering and conditioning it, so that the feedback loop receives an accurate representation of the DC level without being directly exposed to the complexity of ripple management. This allows the converter to maintain simple topology while achieving accurate DC level measurement through the intermediary correction circuit.

The patent segments the output processing into distinct functional blocks: the converter generates the raw output, the correction circuit processes and cleans the signal, and the feedback loop uses the corrected signal for control. This segmentation allows each component to perform its specific function optimally - the converter remains simple while the correction circuit handles the complexity of ripple management and DC level accuracy.