ISL6323 Datasheet PDF

●Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors

●The ISL6323 dual PWM controller delivers high efficiency and tight regulation from two synchronous buck DC/DC converters. The ISL6323 supports hybrid power control of AMD processors which operate from either a 6-bit parallel VID interface (PVI) or a serial VID interface (SVI). The dual output ISL6323 features a multi-phase controller to support uniplane VDD core voltage and a single phase controller to power the Northbridge (VDDNB) in SVI mode. Only the multi-phase controller is active in PVI mode to support uniplane VDD only processors.

●Features

●• Processor Core Voltage Via Integrated Multi-Phase Power Conversion

●• Configuration Flexibility

●\- 2-Phase Operation with Internal Drivers

●\- 3- or 4-Phase Operation with External PWM Drivers

●• Serial VID Interface Inputs

●\- Two Wire, Clock and Data, Bus

●\- Conforms to AMD SVI Specifications

●• Parallel VID Interface Inputs

●\- 6-bit VID input

●\- 0.775V to 1.55V in 25mV Steps

●\- 0.375V to 0.7625V in 12.5mV Steps

●• Precision Core Voltage Regulation

●\- Differential Remote Voltage Sensing

●\- ±0.5% System Accuracy Over-Temperature

●\- Adjustable Reference-Voltage Offset

●• 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

●• Variable Gate Drive Bias: 5V to 12V

●• Overcurrent Protection

●• Multi-tiered Overvoltage Protection

●• Selectable Switching Frequency up to 1MHz

●• Simultaneous Digital Soft-Start of Both Outputs

●• Processor NorthBridge Voltage Via Single Phase Power Conversion

●• Precision Voltage Regulation

●\- Differential Remote Voltage Sensing

●\- ±0.5% System Accuracy Over-Temperature

●• Serial VID Interface Inputs

●\- Two Wire, Clock and Data, Bus

●\- Conforms to AMD SVI Specifications

●• Overcurrent Protection

●• Continuous DCR Current Sensing

●• Variable Gate Drive Bias: 5V to 12V

●• Simultaneous Digital Soft-Start of Both Outputs

●• Selectable Switching Frequency up to 1MHz

●• Pb-Free (RoHS Compliant)