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)