The ISL6329 dual PWM controller delivers high efficiency and tight regulation from two synchronous buck DC/DC converters. The ISL6329 supports power control of AMD processors, which operate from a serial VID interface (SVI). The dual output ISL6329 features a multiphase controller to support the Core voltage (VDD) and a single phase controller to power the Northbridge (VDDNB).

Features

• Processor Core Voltage Via Integrated Multiphase Power Conversion

• Configuration Flexibility

- 1 or 2-Phase Operation with Internal Drivers

- 3,4,5 or 6-Phase Operation with External PWM Drivers

• PSI_L Support

- Phase Shedding for Improved Efficiency at Light Load

- Diode Emulation in PSI mode

- Gate Voltage Optimization

• I2C Interface with 8 Selectable Addresses

• Precision Core Voltage Regulation

- Differential Remote Voltage Sensing

- ±0.6 System Accuracy Over-Temperature

• Optimal Processor Core Voltage Transient Response

- Adaptive Phase Alignment (APA)

- Active Pulse Positioning Modulation

• Fully Differential, Continuous DCR Current Sensing

- Accurate Load Line Programming

- Precision Channel Current Balancing

- Temperature Compensated

• Serial VID Interface Handles up to 3.4MHz Clock Rates

• Two Level Overcurrent Protection Allows for High Current Throttling (IDD_SPIKE)

• Multi-tiered Overvoltage Protection

• Selectable Switching Frequency up to 1MHz

• Simultaneous Digital Soft-Start of Both Outputs

• Pb-Free (RoHS Compliant)