LED Light-Source Module Current Balancing Control

The patent implements a feedback control mechanism where each LED string is equipped with a current detector that monitors the current flowing through it. The detected current information is fed back to a controller, which then adjusts the driving signals to compensate for current imbalances. This feedback loop ensures that when one LED string malfunctions or experiences current variation, the system automatically compensates by adjusting other strings, thereby maintaining uniform brightness across all LED strings while preserving the high total brightness output achieved through parallel connection.

The patent divides the control system into independent control units, with each LED string having its own current detector and being individually controllable. Instead of using a single centralized controller for all LED strings, the system segments the control function so that each string can be monitored and adjusted independently. This segmentation allows the system to maintain low overall complexity while achieving precise current balancing across individual strings, thereby ensuring uniform brightness without requiring complex centralized control mechanisms.

The patent implements a dynamic control mechanism that continuously monitors current distribution across LED strings and automatically adjusts driving signals in real-time. When a malfunction or current imbalance is detected in any LED string, the controller dynamically redistributes the current load among the remaining healthy strings. This dynamic adjustment prevents any single string from being overloaded, thereby compensating for malfunctions and extending the overall system lifespan while maintaining uniform brightness throughout operation.