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6563CRZ - ISL6563CRZ

Description

Bias supply for the IC’s small-signal circuitry.

Connect this pin to a 5V supply and locally decouple using a quality 0.1µF ceramic capacitor.

Connect these pins to the circuit ground using the shortest possible paths.

Features

  • of this controller IC include programmable VID codes compatible with Intel VRM9, VRM10, as well as AMD’s Hammer microprocessors, along with a system regulation accuracy of ±1%. The droop characteristic, used to reduce the overshoot or undershoot of the output voltage, is easily programmed with a single resistor. Important features of this controller IC include a set of sophisticated overvoltage and overcurrent protection. Overvoltage results in the converter turning the lower MOSFETs ON to clamp.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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® ISL6563 www.DataSheet4U.com Data Sheet April 13, 2005 FN9126.6 Two-Phase Multiphase Buck PWM Controller with Integrated MOSFET Drivers The ISL6563 two-phase PWM control IC provides a precision voltage regulation system for advanced microprocessors. Multiphase power conversion is a marked departure from single phase converter configurations employed to satisfy the increasing current demands of modern microprocessors and other electronic circuits. By distributing the power and load current, implementation of multiphase converters utilize smaller and lower cost transistors with fewer input and output capacitors. These reductions accrue from the higher effective conversion frequency with higher frequency ripple current due to the phase interleaving process of this topology.
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