DESCRIPTION

The IR3082 Control IC combined with an IR XPhaseTM Phase IC provides a full featured and flexible way to implement a complete Opteron or Athlon64 power solution. The “Control” IC provides overall system control and interfaces with any number of “Phase ICs” which each drive and monitor a single phase of a multiphase converter. With simple 5 bit voltage programming and a few external components, the IR3082 is also well suited for general purpose multiphase applications. The XPhaseTM architecture results in a power supply that is smaller, less expensive, and easier to design while providing higher efficiency than conventional approaches.

FEATURES

• 5 bit VID with 1 overall system set point accuracy

• Programmable Dynamic VID Slew Rate

• +/-300mV Differential Remote Sense

• Programmable 150kHz to 1MHz oscillator

• Programmable VID Offset and Load Line output impedance

• Programmable Softstart

• Programmable Hiccup Over-Current Protection with Delay to prevent false triggering

• Simplified Power Good output provides indication of proper operation and avoids false triggering

• Operates from 12V input with 9.75V Under-Voltage Lockout

• 7.0V/5mA Bias Regulator provides System Reference Voltage

• Small thermally enhanced 20L MLPQ package