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• 下载
  Versatile Current Source Safely and Quickly Charges Everything from Large Capacitors to Batteries &mdash DN405
  PDF, 99 Kb, 档案已发布: Dec 7, 2006
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  Versatile Current Source Safely and Quickly Charges Everything
  from Large Capacitors to Batteries – Design Note 405
  David Ng
  Introduction
  The LT®3750 is a current mode flyback controller optimized
  to easily and efficiently provide a controlled current to
  charge just about any capacitive energy storage device.
  The LT3750’s simple but flexible feature set allows it to
  handle a wide variety of charging needs. These include
  large high voltage capacitors for professional photoflash
  equipment and emergency beacons, small capacitors that
  are charged and discharged thousands of times a second,
  and batteries for long term energy needs.
  Safe, Small and Flexible
  All of the control and feedback functions of the LT3750
  are referred to the charger’s input. The target voltage is
  set by just two resistors in a simple, low voltage network
  that monitors the flyback voltage of the transformer.
  When charging a capacitor to a high voltage, there is no
  need to connect any components to the hazardously high
  output potential. The charging current is a triangle wave
  whose amplitude is set by an external sense resistor and
  the flyback transformer turns ratio. …

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  Tiny Controller Makes It Easy to Charge Large Capacitors &mdash LT Journal
  PDF, 195 Kb, 档案已发布: Mar 28, 2006
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  L DESIGN FEATURES Tiny Controller Makes It Easy to
  by David Ng
  Charge Large Capacitors
  Introduction
  Emergency warning beacons, inventory control scanners, professional
  photoflash and many other systems
  operate by delivering a pulse of energy
  to a transducer. This energy typically
  comes from a large capacitor that has
  been charged to some predetermined
  voltage.
  The LT3750 is a current-mode
  flyback controller optimized for charging large value capacitors to a user
  selected target voltage. This target
  voltage is set by the turns ratio of
  the flyback transformer and just
  two resistors in a simple, low voltage
  network, so there is no need to connect components to the high voltage
  output. The charging current is set
  by an external sense resistor and is
  monitored on a cycle-by-cycle basis.
  The LT3750 is available in a space
  saving MSOP-10 package. …

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制造商分类

• Power Management > Switching Regulator > Xenon Photoflash Charger | Flyback, Forward and Isolated Controllers

其他名称:

LT3750EMSPBF, LT3750EMS PBF