Back to results
US 8,669,715 B2Granted
LED driver having constant input current
AssigneeCRS Electronics
InventorScott Riesebosch
Life of this patent
Estimating the term…
Abstract
Power consumed by an LED driver may be reduced by drawing, from an electronic transformer or dimmer, an input current that is constant over a plurality of input voltages. Power derived from the constant input current is provided to the LED driver.
Claims14
A method for reducing power consumed by an LED driver, the method comprising:
- drawing, from an electronic transformer or dimmer, an input current that is substantially constant over a plurality of input voltages;
- providing the input current to power the LED driver;
- monitoring an output current of the LED driver;
- and
- lowering the constant input current when the output current exceeds a threshold.
2 more elements
A system for reducing power consumed by an LED driver, the system comprising:
- a constant-current sink for drawing, from an electronic transformer or dimmer, an input current that is constant over a plurality of input voltages;
- an output driver for receiving the constant input current and powering an LED therewith;
- and
- a current sensor for determining a level of an output current provided to the LED,
- wherein the constant-current sink reduces the constant input current if the current sensor detects the output current increasing past a threshold.
2 more elements
Dependencies are inferred from the claim text.