A Type of Low Voltage LED Driver with DC/DC Buck-boost Converters（Ⅰ）
Abstract：The principle and evolvement of DC/DC buck-boost converters used for LED drivers are described in detail.The relationship between output voltage and input voltage is deduced,expressed with duty ratio.And two typical IC chips and the applied circuits are introduced.
Keywords：DC/DC buck-boost convertercontinuous conduction mode（CCM）discontinuous conduction mode（DCM）duty ratioisolated power supply
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 17-21 )