Details

Autor(en) / Beteiligte

• Castro Pereira, Denis de
• Bernard Figueiredo Rabelo, Everton
• Almeida, Pedro Santos
• Marcio Soares, Guilherme
• Tofoli, Fernando Lessa
• Antonio Carvalho Braga, Henrique

Titel

Efficiency Analysis for Interleaved Buck Converters Employed as Extra-High Current COB LED Drivers

Ist Teil von

• 2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC), 2019, p.1-6

Ort / Verlag

IEEE

Erscheinungsjahr

2019

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• This work presents a performance evaluation concerning interleaved buck structures used to drive extra-high current (up to 12 A) chip-on-board (COB) light-emitting diodes (LEDs). The analysis is carried out employing nonideal elements in simulations so that a better and reliable approach can be obtained as close to real results as possible. Aiming at a thorough analysis of conduction losses at very high current levels in floodlighting applications, interleaved buck converters (IBCs) are employed to establish a comparative approach concerning global efficiency and component count for conventional and synchronous topologies. Furthermore, the 3-cell IBC is experimentally implemented to evaluate and compare the total losses for this very-high current lighting application.