L6751C Datasheet, PDF (1/57 Pages) STMicroelectronics – Digitally controlled dual PWM for Intel VR12 and AMD SVI

L6751C
Digitally controlled dual PWM for Intel VR12 and AMD SVI
WPLGA72 6 x 6 mm
Features
 VR12 compliant with 25 MHz SVID bus rev. 1.5
– SerialVID with programmable IMAX,
TMAX, VBOOT, ADDRESS
 AMD SVI compliant
 Second generation LTB Technology™
 Flexible driver/DrMOS support
 JMode support
 Fully configurable through PMBus^™
 Dual controller:
– Up to 6 phases for CORE and memory
– 1 phase for graphics (GFX), system agent
(VSA) or Northbridge (VDDNB)
 Single NTC design for TM, LL and IMON
thermal compensation (for each section)
 VFDE and GDC - gate drive control for
efficiency optimization
 DPM - dynamic phase management
 Dual remote sense; 0.5% V_OUT accuracy
 Full-differential current sense across DCR
 AVP - adaptive voltage positioning
 Dual independent adjustable oscillator
 Dual current monitor
 Pre-biased output management
 Average and per-phase OC protection
Datasheet - production data
 OV, UV and FB disconnection protection
 Dual VR_RDY
 WPLGA72 6 x 6 mm package
Applications
 High-current VRM / VRD for desktop / server /
workstation Intel^® / AMD CPUs
 DDR3 memory supply
Description
The L6751C device is a universal digitally
controlled dual PWM DC-DC designed to power
Intel’s VR12 and AMD SVI processors and
memories: all required parameters are
programmable through dedicated pin-strapping
and PMBus interface. The device features up to
6-phase programmable operation for multi-phase
sections and a single-phase with independent
control loops. When configured for memory
supply, single-phase (VTT) reference is always
tracking multi-phase (VDDQ) scaled by a factor of
2. The L6751C supports power state transitions
featuring VFDE, programmable DPM and GDC
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 WPLGA72 6 x 6 mm
package.
Table 1. Device summary
Order code
Package
Packaging
L6751C
WPLGA72 6 x 6 mm
Tray
L6751CTR WPLGA72 6 x 6 mm Tape and reel
July 2013
This is information on a product in full production.
DocID025037 Rev 1
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