DESCRIPTION
The IR3084U Control IC combined with an IR XPhaseTM Phase IC provides a full featured and flexible way to implement a complete VR10, VR11, 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. 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
• 1 to X phase operation with matching Phase IC
• 7-bit VR 10/11 compatible VID with 0.5% overall system set point accuracy
• 5-bit Opteron/Athlon64 compatible VID with 1% overall system set point accuracy
• Programmable Dynamic VID Slew Rate
• +/-300mV Differential Remote Sense
• Programmable VID Offset Voltage at the Error Amplifier’s Non-Inverting Input allows Zero Offset
• Programmable 150kHz to 1MHz oscillator
• Programmable VID Offset and Load Line output impedance
• Programmable Hiccup Over-Current Protection with Delay to prevent false triggering
• Simplified VR Ready output provides indication of proper operation and avoids false triggering
• Operates from 12V input with 9.9V Under-Voltage Lockout
• 6.8V/6mA Bias Regulator provides System Reference Voltage
• Phase IC Gate Driver Bias Regulator / VRHOT Comparator
• Reduced Over-Current Detect Delay eliminates and external resistor in typical applications
• Small thermally enhanced 28L MLPQ package