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  Active Voltage Positioning Reduces Output Capacitors &mdash Design Solutions 10
  PDF, 130 Kb, 档案已发布: Nov 1, 1999
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  Design Solutions 10
  November 1999
  Active Voltage Positioning Reduces Output Capacitors
  by Robert Sheehan
  INTRODUCTION
  Power supply performance, especially transient response,
  is key to meeting today’s demands for low voltage, high
  current microprocessor power. In an effort to minimize
  the voltage deviation during a load step, a technique that
  has recently been coined “active voltage positioning” is
  generating substantial interest and gaining popularity in
  the portable computer market. The benefits include lower
  peak-to-peak output voltage deviation for a given load
  step, without having to increase the output filter capacitance. Alternatively, the output filter capacitance can be
  reduced while maintaining the same peak-to-peak transient response.
  BASIC PRINCIPLE
  The term “active voltage positioning” (AVP) refers to
  setting the power supply output voltage at a point that is
  dependent on the load current. At minimum load, the
  output voltage is set to a slightly higher than nominal level.
  At full load, the output voltage is set to a slightly lower than
  nominal level. Effectively, the DC load regulation is
  degraded, but the load transient voltage deviation will be …

文章

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  Low Voltage, High Current DC/DC Power Supply with Load Sharing and Redundancy &mdash LT Journal
  PDF, 183 Kb, 档案已发布: Aug 9, 2004
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  DESIGN IDEAS Low Voltage, High Current DC/DC
  Power Supply with Load Sharing and
  Redundancy
  by Henry J. Zhang and Wei Chen
  Introduction
  As computer and networking systems
  get larger and faster, their supply
  currents continue to rise and their
  supply voltages continue to drop. Load
  currents are high enough to require
  that power supply designers use several power supply modules in parallel.
  High performance power supplies for
  data-processing and communication
  equipment must also provide exceptional reliability and fault tolerance.
  For example, power systems for mission-critical data processing systems
  are must be functional better than
  99.999% of the time. To satisfy the
  needs of these systems, the power
  management solution must provide
  load sharing, fault tolerance and redundancy.
  This article presents a power management solution that offers all of
  these features in a relatively simple
  circuit that uses the LTC3729 …

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• Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | External Power Switch Buck Controllers

其他名称:

LTC3728IGPBF, LTC3728IG PBF