Analysis and Design of the Integrated Double Buck-Boost Converter as a High-Power-Factor Driver for Power-LED Lamps

作者：Marcos Alonso J; Vina Juan; Gacio Vaquero David; Martinez Gilberto; Osorio Rene

来源：IEEE Transactions on Industrial Electronics, 2012, 59(4): 1689-1697.

DOI：10.1109/TIE.2011.2109342

• Double buck-boost
• LED lamp power supply
• LED lamps
• film capacitors
• high reliability
• power factor correction
• single stage converter

In this paper, an integrated double buck-boost (IDBB) converter is proposed as a high-power-factor offline power supply for power-LED lamps. The IDBB converter features just one controlled switch and two inductors and is able to supply a solid-state lamp from the mains, providing high power factor and good efficiency. In this paper, the IDBB converter is analyzed, and a design methodology is proposed. It is demonstrated that, with a careful design of the converter, the filter capacitances can be made small enough so that film capacitors may be used. In this way, the converter mean time between failures can be made as high as that of the solid-state lamp. A design example for a 70-W converter supplied from a 230 V/50 Hz mains for street lighting applications is shown. Finally, experimental results from a laboratory prototype are also presented.

• 出版日期2012-4