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A novel family of loss-adaptive self-oscillating converters is developed for high-efficiency and low-cost LED driving. They consist of BJT-type self-oscillating units, loss-adaptive BJT driving units, and low-loss current sensing units. In this paper, a self-oscillating buck converter, one of the family members, is chosen to be introduced in detail. The contents include the operation principle, a...
A loss-adaptive self-oscillating buck converter is proposed for high-efficiency and low-cost LED driving. It consists of a self-oscillating unit composed of bipolar junction transistors (BJTs)-type self-oscillating unit, a loss-adaptive BJT driving unit, and a low-loss peak-current sensing unit. In this paper, its operation principle including a loss-adaptive BJT-driving scheme and a low-loss peak-current...
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