The ISL6333 three-phase PWM family of control ICs provide a precision voltage regulation system for advanced microprocessors. The integration of power MOSFET drivers into the controller IC marks a departure from the separate PWM controller and driver configuration of previous multi-phase product families. By reducing the number of external parts, this integration is optimized for a cost and space saving power management solution.

Features
• Intel VR11.1 Compatible
- IMON Pin for Output Current Monitoring
- Power State Indicator (PSI#) Pin for Phase Dropping and Higher Efficiency During Light Load States
• CPURST_N Input to Eliminate Required Extensive
External Circuit for proper PSI# Operation of Intel’s
Eaglelake Chipset Platform (ISL6333B, ISL6333C Only)
• Integrated Multi-Phase Power Conversion
- 3-Phase or 2-Phase Operation with Internal Drivers
• Precision Core Voltage Regulation
- Differential Remote Voltage Sensing
- ±0.5% System Accuracy Over-Temperature
- Adjustable Reference-Voltage Offset
• Optimal Transient Response
- Active Pulse Positioning (APP) Modulation
- Adaptive Phase Alignment (APA)
• Fully Differential, Continuous DCR Current Sensing
- Integrated Programmable Current Sense Resistors
- Accurate Load Line Programming
- Precision Channel Current Balancing
• Gate Voltage Optimization Technology (ISL6333,ISL6333B Only)
• Power Saving Diode Emulation Mode (ISL6333, ISL6333B Only)
• Optimized for use with Coupled Inductors
• Variable Gate Drive Bias: +5V to +12V
• Microprocessor Voltage Identification Inputs
- 8-bit VID Input for Selecting VR11 DAC Voltages
- Dynamic VID Technology
• Dynamic VID Compensation
• Overcurrent Protection and Channel Current Limit
• Multi-tiered Overvoltage Protection
• Digital Soft-Start
• Selectable Operation Frequency up to 1.0MHz Per Phase
• Pb-free (RoHS Compliant)