Solutions Search - LT3791 - 60V 4-Switch Synchronous Buck-Boost LED Driver Controller

Meet Green Standards in 24VAC and 12VAC Lighting Systems: Replace Halogen Bulbs with LEDs Driven by High Power Factor, High Efficiency Converter

Keith Szolusha - Applications Engineering Section Leader Oct 17th 2013
LEDs are increasingly used in 24VAC and 12VAC lighting systems as a robust, energy efficient and high performance alternative to halogen lamps. Power converters that drive the LEDs should have a high power factor (above 90% in order to meet generally accepted green standards), should be efficient, use a minimal number of components ...

DC1666A - LT3791 Demo Board | 4.7V-60V Input Drives 25V of LEDs at 2A (scalable to 100W)

Apr 2nd 2012
Demonstration circuit DC1666A is a synchronous fourswitch buck-boost LED driver controller. It accepts an input voltage from 4.7V to 60V, and drives up to 25V of LEDs at 2A. DC1666A features both PWM and analog dimming of the LED string. It has an OPENLED flag that indicates when the LED string has been removed and it has a ...

60V, 98% Efficient, 4-Switch Synchronous Buck-Boost Controller IC Drives LEDs, Regulates Voltage and Charges Batteries

Keith Szolusha - Applications Engineering Section Leader Mar 20th 2012
LEDs are becoming both more popular and more powerful. Strings of 1A, 2A, 3A and higher current LEDs found in vehicles, billboards, industrial lighting, and many more applications need to be driven both accurately and efficiently from DC/DC converters. In many cases, a step-up and step-down topology is needed due to the voltage ...

60V Synchronous Buck-Boost LED Driver Delivers over 100W of LED Power

Mar 12th 2012
MILPITAS, CA – March 12, 2012 – Linear Technology announces the LT3791, a synchronous buck-boost DC/DC LED driver and voltage controller, which can deliver over 100W of LED power. Its 4.7V to 60V input voltage range makes it ideal for a wide variety of applications, including automotive, industrial and architectural lighting. ...

LT3791 98.5% Efficient 100W (33.3V 3A) Buck-Boost LED Driver

Mar 7th 2012
The LT®3791 is a synchronous 4-switch buck-boost LED driver controller. The controller can regulate LED current up to 52V of LED string with input voltages above, below, or equal to the output voltage. The constant-frequency, forced-continuous current mode architecture allows its frequency to be adjusted or synchronized ...

LT3791 15–58VIN to 33.3V 3A LED Automotive Headlight Driver with Up to 98.5% Efficiency

Mar 7th 2012
Airplanes and big trucks with 24V batteries need powerful, efficient and robust headlights and spotlights. This circuit shows a 33.3V, 3A (nine Luminus SSR-90 LEDs) buck-boost LED driver that runs from 15V to 58V input with up to 98.5% efficiency. The 4-switch synchronous topology drives high power LEDs with minimal switch ...