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  uModule Buck-Boost Regulators Offer a Simple and Efficient Solution for Wide Input and Output Voltage Range Applications &mdash DN438
  PDF, 99 Kb, 档案已发布: Mar 17, 2008
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  ВµModule Buck-Boost Regulators Offer a Simple and Efficient
  Solution for Wide Input and Output Voltage Range Applications
  Design Note 438
  Jian Yin and Eddie Beville
  Introduction
  An increasing number of applications require DC/DC
  converters that produce an output that falls somewhere
  within the input voltage range. The problem is that
  conventional buck-boost converter topologies, such as
  SEPIC or boost followed by buck, are complex, inefficient
  and consume a relatively large board area. Linear Technology offers 4-switch-topology buck-boost regulators
  that significantly improve efficiency and save space, but
  a complete regulator design still requires a number of
  external components and meticulous board layout decisions related to electrical and thermal considerations.
  The next clear step to simplify the design is a modular
  approach—a buck-boost regulator system in an IC form
  factor. The LTM4605 and LTM4607 ОјModuleв„ў buck-boost
  regulators take that approach. Each requires only one
  external inductor and a single sensing resistor to produce
  a compact, high performance, high efficiency buck-boost
  regulator with exceptional thermal performance.
  High Efficiency
  The LTM4605 and LTM4607 are high efп¬Ѓciency switch …

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  High Power, Single Inductor, Surface Mount Buck-Boost uModule Regulators Handle 36VIN, 10A Loads &mdash LT Journal
  PDF, 1.1 Mb, 档案已发布: Mar 19, 2008
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  L DESIGN FEATURES High Power, Single Inductor,
  Surface Mount Buck-Boost ВµModule
  Regulators Handle 36VIN, 10A Loads by Manjing Xie Introduction VIN
  5V TO 36V One of the most daunting tasks for a
  power supply designer is producing a
  high power density supply where the
  output voltage sits within the input
  voltage range. High power density
  buck-boost converters usually require
  complex and bulky magnetics, run at
  low efficiency, and place high electrical and thermal stresses on devices.
  The LTM4605 and LTM4607 ВµModule
  regulators can cure these buck-boost
  headaches. The secret is in reducing
  the component selection to an inductor, a sense resistor and bulk input
  and output capacitors. The resulting
  solution is as close to a plug-and-play
  buck-boost converter you can get in
  an IC form factor. The LTM4605 and LTM4607
  incorporate most of the
  components needed for a
  complete buck-boost solution
  in their 15mm Г— 15mm Г— …

• 下载
  uModule Regulator Fits a (Nearly) Complete Buck-Boost Solution in 15mm × 15mm × 2.8mm for 4.5V-36V VIN to 0.8V-34V VOUT &mdash LT Journal
  PDF, 406 Kb, 档案已发布: Mar 1, 2009
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  DESIGN IDEAS L µModule Regulator Fits a (Nearly)
  Complete Buck-Boost Solution
  in 15mm Г— 15mm Г— 2.8mm for
  4.5V–36V VIN to 0.8V–34V VOUT
  Linear Technology offers a number of
  high efficiency synchronous 4-switch
  buck-boost DC/DC converter solutions for applications where VOUT falls
  within the range of VIN. The LTM4605,
  LTM4607 and LTM4609 ВµModule
  regulators are nearly self-contained
  buck-boost solutions that share pincompatible 15mm Г— 15mm Г— 2.8mm
  packages. The package includes the
  controller, four power FETs and a
  number of other discrete components.
  Only an external inductor, a sensing
  resistor, a voltage setting resistor and
  a few input and output capacitors are
  needed to complete a high efficiency
  buck-boost converter.
  Table 1 shows the input voltage,
  output voltage and current specifications of these three buck-boost
  ВµModule regulators. The LTM4609
  is the latest addition to this family. …

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• Power Management > Switching Regulator > Buck-Boost Regulators > µModule Buck-Boost Regulators