Data Brief

For further information contact your local STMicroelectronics sales office.

February 2008

Rev 1

1/3

3

L6756

2/3/4 phase buck controller

for VR10, VR11.1 and AM2 processor applications

Features

response

Sensing

Applications

workstation CPUs

Description

L6756 is a two-to-four phase controller designed

to power Intel’s most demanding Processors and,

most in general, low-voltage, high-current power

provide the fastest response to load transients

thus minimizing the output filter composition.

L6756 embeds selectable DAC: Output Voltage is

programmable up to 1.6000 V (Intel VR10 and

VR11.x DACs) or up to 1.550 V (AMD 6bit DAC)

managing DVID transitions with ±0.5 % output

voltage accuracy over line, load and temperature

variations.

The device assures fast protection against load

over current and under / over voltage. Feedback

disconnection prevents from damaging the load in

case of misconnections in the system board.

Low-Side-Less start-up allows soft-start over pre-

biased output avoiding dangerous current return

through the main inductors as well as negative

spike at the load side.

L6756 is available in VFQFPN40 7x7 mm

package.

VFQFPN40

Table 1.

Device summary

Order code

Package

Packing

L6756

VFQFPN40

Tube

VFQFPN40

Tape & Reel

www.st.com