The ISL6313 two-phase PWM control IC provides 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 multiphase product families. By reducing the number of external parts, this integration is optimized for a cost and space saving power management solution.

One outstanding feature of this controller IC is its multiprocessor compatibility, allowing it to work with both Intel and AMD microprocessors. Included are programmable VID codes for Intel VR11 as well as AMD 5-bit and 6-bit DAC tables. A circuit is provided for remote voltage sensing, compensating for any potential difference between remote and local grounds. The output voltage can also be positively or negatively offset through the use of a single external resistor.

Features

• Integrated Multi-Phase Power Conversion

- 2-Phase or 1-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

• Variable Gate Drive Bias: 5V to 12V

• Multi-Processor Compatible

- Intel VR11 Mode of Operation

- AMD Mode of Operation

• Microprocessor Voltage Identification Inputs

- 8-Bit DAC

- Selectable between Intel VR11, AMD 5-bit, and AMD 6-bit DAC tables

- Dynamic VID Technology

• Dynamic VID Compensation

• Overcurrent Protection

• Multi-tiered Overvoltage Protection

• Digital Soft-Start

• Selectable Operation Frequency up to 1.5MHz Per Phase

• Pb-free Available (RoHS Compliant)