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  High Performance 3-Phase Power Supply Delivers 65A and High Efficiency Over the Entire Load Range &mdash DN312
  PDF, 84 Kb, Datei veröffentlicht: May 3, 2003
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  advertisement High Performance 3-Phase Power Supply Delivers 65A and
  High Efficiency Over the Entire Load Range – Design Note 312
  Wei Chen
  Introduction
  CPUs used in notebook computers and other mobile
  applications now draw more than 30A of current and
  may draw as much as 65A in the near future. For
  these heavy loads, high efficiency power supplies are
  required to protect the system from excessive thermal
  stress. With this in mind, PolyPhaseВ® switching DC/DC
  converters have become the standard for CPU power
  supplies because they are extremely efficient at these
  heavy loads. Nevertheless, for portable applications that
  spend much of the time in sleep or standby modes, light
  load efficiency has also grown in importance, where
  conserving energy for maximum battery run-time is
  also a priority. Unfortunately, traditional PolyPhase
  converters, although exceptional performers at heavy
  loads, do not yield comparable efficiencies at light load.
  Linear Technology Corporation offers a solution to this problem with a new family of PolyPhase controllers that
  allow the design of converters that are efficient over
  the entire CPU load range.
  These new 3-phase controllers, the LTCВ®3730, LTC3731 …

Artikel

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  High Performance 3-Phase Power Supplies Yields High Efficiency over the Entire CPU Load Range &mdash LT Journal
  PDF, 200 Kb, Datei veröffentlicht: Mar 1, 2003
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  DESIGN FEATURES High Performance 3-Phase Power
  Supplies Yields High Efficiency over
  the Entire CPU Load Range
  by Wei Chen and Steve Hobrecht Introduction
  VIN Thermal stress is a major concern for
  enterprise CPUs that frequently draw
  up to 100A of load current. PolyPhaseВ®
  switching DC/DC converters reduce
  thermal stress by providing high efficiency at heavy loads, and thus have
  become the standard power supply
  solution for high powered CPUs.
  PolyPhase switchers are also finding
  their way into mobile applications
  where CPUs are drawing currents
  greater than 30A, and will draw 65A
  in the near future. Mobile CPUs pose
  an additional problem, though. They
  spend much of the time in sleep or
  standby modes, meaning that light
  load efficiency is important to maximize battery run-time. Traditional
  PolyPhase converters, despite their
  exceptional performance at heavy load,
  are not as efficient at light load. …

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Herstellerklassifikation

• Power Management > Switching Regulator > Digitally Programmable Regulators

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LTC3732CGTRPBF, LTC3732CG TRPBF