ISL6328ACRZ-T

Special Purpose Regulators Overview

The ISL6328ACRZ-T is a dual PWM controller designed for powering AMD SVI split-plane processors. It integrates a multi-phase controller for the Core voltage (VDD) and a single-phase controller for the Northbridge (VDDNB). The device supports switching frequencies up to 1 MHz, operates within a -40°C to +85°C temperature range, and utilizes a 48-QFN package.

Special Purpose Regulators Feature Summary

• Supports processor core voltage via integrated multi-phase power conversion with configuration flexibility for internal or external drivers.
• Provides precision core voltage regulation using differential remote voltage sensing and fully differential continuous DCR current sensing.
• Features adaptive phase alignment and active pulse positioning modulation for optimal transient response.
• Includes serial VID interface handling high clock rates and multi-tiered overvoltage protection.

Special Purpose Regulators Applications

• Powering AMD SVI split-plane processors
• Core voltage (VDD) generation
• Northbridge voltage (VDDNB) generation

Special Purpose Regulators Procurement Notes

Verify the specific suffix 'ACRZ-T' against official Renesas/Intersil documentation to confirm package type, temperature grade, and tape-and-reel packaging status. Ensure compatibility with AMD SVI protocols and check for any product discontinuance notifications or alternative part recommendations from the manufacturer before procurement.

Special Purpose Regulators Selection Notes

Select this component when designing power stages for AMD processors requiring SVI interface support. Consider the need for configurable phase counts and the benefits of DCR current sensing for load line programming. Evaluate thermal requirements given the operating temperature range and ensure the PCB layout accommodates the 48-QFN footprint.

Special Purpose Regulators Part Context

The ISL6328 belongs to the Intersil/Renesas family of dual PWM controllers optimized for CPU power delivery. It addresses the specific voltage regulation needs of modern processors by combining core and northbridge control in a single IC, simplifying board design compared to discrete solutions.

Special Purpose Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult official Renesas documentation for potential obsolescence notices or recommended upgrades.