Another important concern is the balance of currents that flow in multiple strings. We know that two or three strings of LEDs will have different combined forward voltages. The LED driver will deliver ...

A boost+buck two-stage LED driver is well suited for non-isolated applications in the 50 to 250W power range, offering a viable alternative to more expensive isolated LED drivers. Electrical isolation ...

This Design Idea circuit regulates the current through one or more LEDs, making it almost independent of supply voltage. Its main advantage is a very small dropout voltage, which can be less than ...

A pair of dc-dc converters are specifically designed to drive high-current LEDs at a constant current. The LT3478EFE and LT3478EFE-1 from Linear Technology feature a 2.8- to 36-V input range that is ...

Infineon has brought out a constant current linear LED driver IC which provides low-voltage drop performance for regulating LED current. It is the second device released in the new generation BCR ...

LED controller with dual current regulation loops can detect faulty LEDs and provide 100:1 analogue dimming, writes Xin Qi, senior design engineer at Linear Technology. The LT3796-1 is a switching ...

The LT3744 is a fixed frequency synchronous step-down DC/DC controller designed to drive a LED load at up to 20A continuous or 40A pulsed. The peak current mode controller will maintain ±3% LED ...

In LEDs heat and high currents hasten the dimming process which can lead to unreliable operation in LED-powered optocouplers. Some simple and straight-forward analysis will keep their light shining ...

Cree LED and Current Lighting Solutions entered into a patent license agreement with respect to Current’s patents related to KSF/PFS red phosphor for use in Cree LED products featuring Pro9 technology ...