Description
The L6751B 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 pinstrapping and PMBus interface. The device features up to 6-phase programmable operation for the multi-phase section and a singlephase with independent control loops. When configured for memory supply, single-phase (VTT) reference is always tracking multi-phases (VDDQ) scaled by a factor of 2. The L6751B 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 VFQFPN68 8x8 mm

Features
■ VR12 compliant with 25 MHz SVID bus rev1.5 – 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

Applications
■ High-current VRM / VRD for desktop / server / workstation Intel / AMD CPUs
■ DDR3 memory supply