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Small Size & Very High Efficiency Buck-Boost Converter

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Uploaded by on Jul 2, 2009

with Henry Zhang, Applications Engineering Manager - Power Products
http://video.linear.com/19?utm_source=buckboostconverters&utm_medium=vide...
Many applications such as battery-powered supply have a wide input voltage that can be lower or higher than the regulated output voltage. The conventional solutions, such as flyback, Sepic or a 2-stage supply are usually complicated and inefficient.

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Science & Technology

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  • why linear technology do not use buck-boost topology? it still use a single inductor and capacitor.

  • @INeedToLiveLonger

    You're right.

  • Such company and they have video only 240p, pathetic.

  • Very interesting video and good information!

    In boost mode, the first transistor (left side buck) is always on. The boost side (right side) switches on and off as a boost converter.

  • In boost mode is that first transistor held on, or switched on at and off with the boost transistor?

  • Hard to understand this guy

  • Excellent video, very informative!

  • How can the voltage range of this high efficiency topology be shifted down for using on e.g. Luxeon/LEDs and LiPo cells/ultracaps?

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