For further information contact your local STMicroelectronics sales office.

March 2014

DocID026061 Rev 1

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PM6764, PM6766

VR12.5™ digital multiphase controller with PMBus™

Data brief

Features

 PM6764: 4-phase compact digital controller

 PM6766: 6-phase compact digital controller

 VR12.5™ compliant with 25 MHz SVID bus

rev. 1.2, serial-VID with programmable IMAX,

TMAX, VBOOT, ADDRESS

 High-performance digital control loop (digital

STVCOT™)

 Fully configurable through PMBus™

 Flexible driver/DrMOS support

 Single NTC design for TM, LL and IMON

thermal compensation

 DPM - dynamic phase management

 Remote sense; 0.5% Vout accuracy with

calibration

 Current sense across DCR with calibration

 Autocalibration capability for current and

voltage sense

 Programmable voltage positioning

 OV, UV and FB disconnection protection

 Embedded non-volatile memory (NVM)

 Black box recorder

 PM6764: VFQFPN28 4 x 4 mm package

 PM6766: VFQFPN40 5 x 5 mm package

Applications

 High current power regulation for VR12.5

 DDR memory power regulation for VR12.5

based Intel based systems

Description

The PM6764/66 is a high performance digital

controller designed to power Intel’s VR12.5

processors (PM6766) and memories (PM6764):

all required parameters are programmable

through a PMBus™ interface.

The device utilizes digital technology to

implement all control and power management

functions to provide maximum flexibility and

performance. The NVM is embedded to store

custom configurations.

The PM6764/66 device features up to 4/6-phase

programmable operation. The PM6764/66

supports power state transitions featuring VFDE,

and programmable DPM maintaining the best

efficiency over all loading conditions without

compromising transient response. The device

assures fast and independent protection against

load overcurrent, under/overvoltage and feedback

disconnections. The device is available in

VFQFPN28 4 x 4 mm (PM6764) and VFQFPN40

5 x 5 mm (PM6766) packages.

VFQFPN28 4 x 4 mm

VFQFPN40 5 x 5 mm

Table 1. Device summary

Order code

Package

Packing

PM6764

VFQFPN28 4 x 4 mm

Tray

PM6764TR

Tape and reel

PM6766

VFQFPN40 5 x 5 mm

Tray

PM6766TR

Tape and reel

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