This paper presents a very high frequency DC/DC converter for LED lighting. Several resonant topologies are compared and their usability discussed. At the end the resonant SEPIC converter is chosen based on the achievable power density and total bill of material. Simulations of a 51 MHz converter with 40 V input and 15 V output are made. The simulation shows possibility of achieving efficiency up to 87 % even with a HEXFET Power MOSFET. Three prototypes of the simulated converter are implemented showing good correlation with simulations. The prototypes have efficiencies up to 84 % and power densities up to 8.9 W/cm3 (146 W/in3).
|Title of host publication||2013 IEEE Applied Power Electronics Conference and Exposition|
|Publication status||Published - 2013|
|Event||28th Annual IEEE Applied Power Electronics Conference and Exposition - Long Beach Convention Center, Long Beach CA, United States|
Duration: 17 Mar 2013 → 21 Mar 2013
|Conference||28th Annual IEEE Applied Power Electronics Conference and Exposition|
|Location||Long Beach Convention Center|
|City||Long Beach CA|
|Period||17/03/2013 → 21/03/2013|
Madsen, M. P., Knott, A., & Andersen, M. A. E. (2013). Very High Frequency Resonant DC/DC Converters for LED Lighting. In 2013 IEEE Applied Power Electronics Conference and Exposition (pp. 835-839). IEEE.