| 摘要 |
Method and system for driving LED lighting application (200) provide a driving circuit(202) that can power an array of LEDs(204) in a more efficient manner. The disclosed driving circuit(202) achieves higher power efficiency by maintaining the LED forward voltage and current at or near the minimum level needed to turn on the LED. In some embodiments, this entails providing the LEDs with a forward voltage and current that are within an initial nonlinear region (102) of the LED current-voltage curve (100). A greater number of LEDs may then be deployed to compensate for potentially less lumen output as a result of operating the LEDs at or near their turn-on point. Such an arrangement produces substantially the same lumen output as existing LED lighting application (200) while consuming less power and generating less heat, thereby increasing power efficiency. |
