This article introduces a 100V controller that drives high power LED strings from just about any input. The controller features a 125W, 83V at 1.5A, 97% efficient boost LED driver for stadium lighting. It is suitable for large area and high lumens light sources, and can handle wide ranging inputs. It can be applied to various applications including LCD backlights, industrial and architectural lighting, automotive lights, streetlights, billboards, and stadium lights.
The document introduces the LT3756 high voltage LED driver, highlighting its ability to handle wide input voltages (40V to 100V) and drive high power solid-state LEDs. It emphasizes features such as topological versatility, accurate current sensing, PWM dimming, and various protection mechanisms like soft-start and open-LED detection.
The text provides three specific circuit examples: a 125W boost mode driver for stadium lighting operating at 40V to 60V input; an 80V buck mode driver capable of driving one or two LEDs with PWM dimming; and a buck-boost mode driver accepting inputs from 9V to 36V. The note concludes by summarizing the LT3756 as a single-IC choice for diverse lighting systems due to its high performance and protection features.
The driver operates with a 40V to 60V input.
The gate driver switches at 250kHz.
A 100:1 dimming ratio is possible.