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FN9028 - InfiniBand +12V Bulk and +5V Auxiliary Power Controller

Description

PIN NO.

1 DESIGNATOR ISET FUNCTION Current Set DESCRIPTION Connect to the low side of the current sense resistor through the current limiting set resistor.

This pin functions as the current regulation level voltage programming pin.

Features

  • VB Programmable Overcurrent Protection Regulation Level for 25W and 50W Ports.
  • Internal Charge Pump Allows the Use of an N-Channel MOSFET for VB Control.
  • VB Adjustable Turn-On Ramp.
  • Soft Start Overcurrent Protection During Turn-On.
  • Two Levels of VB Overcurrent Detection and Protection.
  • VA and VB Undervoltage Lock-Outs.
  • 0.125Ω Integrated Power N-Channel MOSFET VA Switch.
  • Accurate VA Current Sensing and Limiting (1A).

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Full PDF Text Transcription

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ISL6160 TM Data Sheet August 2001 File Number 9028 InfiniBand +12V Bulk and +5V Auxiliary Power Controller The ISL6160 is designed to address the unique power requirements of the InfiniBand (IB) industry initiative providing independent power control of both the VB(bulk) (+12V) and the VA(auxiliary) (+5V) power rails for a single port. This device can be implemented in both IB Class I (non isolated) and Class II (isolated) Power Topology applications. The ISL6160, along with an N-Channel power MOSFET and a minimal number of passive components provides soft starting ramps of both the VB and VA voltages for an IB module. It also provides accurate and consistent current regulated outputs for a determined period of time before latch-off in the presence of overcurrent (OC) conditions.
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