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ISL6556A - Optimized Multi-Phase PWM Controller

Datasheet Summary

Features

  • Precision Multi-Phase Core Voltage Regulation - Differential Remote Voltage Sensing - ±0.5% System Accuracy Over Temperature and Life - Adjustable Reference-Voltage Offset.
  • Precision rDS(ON) Current Sensing - Accurate Load-Line Programming - Accurate Channel-Current Balancing - Low-Cost, Lossless Current Sensing.
  • Internal Shunt Regulator for 5V or 12V Biasing.
  • Microprocessor Voltage Identification Input - Dynamic VID™ Technology - 6-Bit VID Input - 0.8375V to.

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Datasheet preview – ISL6556A

Datasheet Details

Part number ISL6556A
Manufacturer Intersil
File Size 680.58 KB
Description Optimized Multi-Phase PWM Controller
Datasheet download datasheet ISL6556A Datasheet
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Full PDF Text Transcription

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® Data Sheet December 29, 2004 ISL6556A FN9096.3 Optimized Multi-Phase PWM Controller with 6-Bit DAC for VR10.X Application The ISL6556A controls microprocessor core voltage regulation by driving up to 4 synchronous-rectified buck channels in parallel. Multi-phase buck converter architecture uses interleaved timing to multiply channel ripple frequency and reduce input and output ripple currents. Lower ripple results in fewer components, lower component cost, reduced power dissipation, and smaller implementation area. The ISL6556A utilizes rDS(ON) current sensing in each phase for adaptive voltage positioning (droop), channelcurrent balancing, and overcurrent protection.
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