Datasheet Linear Technology LTC4261IGN#PBF

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Design Notes

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  AdvancedTCA Hot Swap Controller Monitors Power Distribution &mdash DN397
  PDF, 117 Kb, File published: Aug 31, 2006
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  AdvancedTCA Hot Swap Controller Monitors Power Distribution
  Design Note 397
  Mitchell Lee
  Introduction
  AdvancedTCA В® is a modular computing architecture
  developed by the PCI Industrial Computer Manufacturers
  Group for use in central office telecom environments.
  PICMG® 3.0 defines, among other things, the electrical
  and mechanical attributes of the backplane, connectors
  and removable cards in these –48V systems.
  Each removable card, or front board, is designed for live
  insertion into a working system. A power draw of up to
  200W per front board is allowed, placing the maximum
  load current in the 4A to 5A range.
  Card-centric inrush limiting and quantitative current
  and voltage monitoring are highly desirable to sanitize
  the incoming battery feeds, minimize power plane
  disturbances, allow for budgeting power consumption
  and permit failure prediction in an otherwise functional
  system. The LTC В®4261 Hot Swapв„ў controller provides
  these features. Also included is a digital interface for
  controlling the functions of the LTC4261, and for reading
  the current and voltage measurement registers. …

Articles

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  Negative Voltage Hot Swap Controller with 10-Bit ADC and I2C Monitoring &mdash LT Journal
  PDF, 324 Kb, File published: Mar 28, 2006
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  DESIGN FEATURES L Negative Voltage Hot Swap Controller
  with 10-Bit ADC and I2C Monitoring
  by Zhizhong Hou Introduction
  High availability –48V power systems,
  such as telecom and AdvancedTCA
  systems, allow for circuit board
  upgrade and replacement on a live
  powered backplane. The primary role
  of a Hot Swap controller is to make
  this possible by limiting potentially
  large inrush currents, which can cause
  damage to the hot swapped board or
  create disturbances on the backplane.
  Traditionally, –48V Hot Swap controllers operate autonomously—the
  Hot Swap controller shuts down an
  abnormally operating board before
  the host processor knows why. This
  simplifies system design, but gives
  little in the way of diagnostic support
  to the host.
  A far more robust system would
  use the Hot Swap controller to communicate the conditions of the board
  to the host processor, and let the host …

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Manufacturer's Classification

• Monitor, Control and Protection > Hot Swap Controllers > High Voltage Hot Swap Controllers

Other Names:

LTC4261IGNPBF, LTC4261IGN PBF