PM6764TR

Overview

The PM6764TR is a digital multi-phase controller designed for Intel VR12.5 memory power supplies. It features up to four programmable phases and supports dynamic phase management (DPM) for optimized efficiency across load conditions. The device integrates embedded non-volatile memory (NVM) for configuration storage and includes a Black Box Recorder function. It offers telemetry output via PMBus for system monitoring and ensures fast transient response with digital STVCOT technology.

Feature Summary

• Digital control loop implementing STVCOT technology for ultra-fast transient response and high efficiency at light loads
• Embedded non-volatile memory (NVM) stores custom configurations and enables Black Box Recorder functionality for fault analysis
• Fully configurable through PMBus interface, supporting programmable voltage positioning and dynamic phase management (DPM)
• Integrated protection against load overcurrent, under/overvoltage, and feedback disconnections with autocalibration capabilities

Applications

• Intel VR12.5 compliant memory power supply designs
• Server and workstation mainboard voltage regulation modules (VRMs)
• High-performance computing systems requiring precise voltage regulation and telemetry

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing. Confirm that the component is listed as obsolete in official STMicroelectronics catalogs prior to final design approval. Ensure compatibility with existing PMBus implementations and check for any recommended replacement controllers if the part is no longer in active production.

Selection Notes

Select this controller for applications requiring digital flexibility and precise memory rail regulation. It is suitable where compact PCB space is critical due to its small package options. Consider the need for remote sensing and thermal compensation features when designing the power stage. Evaluate the requirement for Black Box recording capabilities for advanced system diagnostics.

Part Context

The PM6764 is part of STMicroelectronics' portfolio of digital multi-phase controllers targeting Intel server platforms. It complements the PM6766, which offers six phases, providing designers with scalable solutions for different power density requirements. These devices utilize advanced digital signal processing to replace traditional analog error amplifiers, allowing for software-defined tuning and enhanced system adaptability.

Replacement Considerations

The PM6764 is marked as obsolete. Designers should evaluate the PM6766 for higher phase count requirements or consult current STMicroelectronics documentation for updated digital controller alternatives compatible with VR12.5 specifications.