L6759D

Special Purpose Regulators Overview

The L6759D is a dual PWM controller designed for Intel VR12 processor memory power delivery. It features a 3-phase multi-phase section for VDDQ and a single-phase section for VTT, with the VTT reference tracking VDDQ scaled by a factor of 2. The device supports a maximum switching frequency of 462 kHz and operates within a temperature range of 0 °C to +125 °C. It requires a minimum supply voltage of 5 V and draws a maximum supply current of 28 mA. The component is housed in a 48-pin VFQFPN package measuring 6 x 6 x 0.95 mm.

Special Purpose Regulators Feature Summary

• Compliant with VR12 standards including 25 MHz SVID bus Rev1.5 and SerialVID capabilities.
• Features second-generation LTB Technology with flexible driver and DrMOS support.
• Supports VFDE and GDC for gate drive control to optimize efficiency across loading conditions.
• Includes dynamic phase management (DPM) and adaptive voltage positioning (AVP).

Special Purpose Regulators Applications

• Powering Intel VR12 processor memories
• VDDQ multi-phase power delivery
• VTT single-phase power delivery

Special Purpose Regulators Procurement Notes

Verify the specific revision and package variant against official STMicroelectronics documentation before integration. Confirm that the design accounts for the 48-pin VFQFPN footprint dimensions. Ensure thermal management strategies align with the specified operating temperature range. Validate PMBus interface compatibility with the target system controller. Check for any end-of-life notices or recommended alternative components from the manufacturer.

Special Purpose Regulators Selection Notes

Select this component for applications requiring strict adherence to Intel VR12 specifications. It is suitable for designs needing independent control loops for VDDQ and VTT phases. Consider its digital programmability via PMBus for flexible configuration. Evaluate the need for its specific transient response characteristics under varying load conditions. Ensure the system can accommodate the required 5 V minimum supply voltage.

Special Purpose Regulators Part Context

The L6759D belongs to STMicroelectronics' portfolio of digital multiphase controllers aimed at high-performance computing. It addresses the power requirements for modern processors and their associated memory subsystems. The device integrates advanced control algorithms to balance efficiency and transient performance. It represents a solution for compact, high-density power designs in server and workstation environments.

Special Purpose Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.