ISL6323AIRZ

单片双PWM混合控制器供电AMD SVI分割平面和PVI Uniplane处理器 Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors

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

The ISL6323A dual PWM controller delivers high efficiency and tight regulation from two synchronous buck DC/DC converters. The ISL6323A 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 ISL6323A 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

• PSI_L Support with Phase Shedding for Improved Efficiency at Light Load

• 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

\- ±0.6% 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

\- ±0.6% 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 Plus Anneal Available RoHS Compliant