L6718 Datasheet, PDF (1/71 Pages) STMicroelectronics – SMBus interface for power management

L6718
Digitally controlled dual PWM with embedded drivers for VR12
processors
Datasheet - production data
VFQFPN56 -7x7 mm
Applications
• High-current VRM / VRD for desktop / server /
new generation workstation CPUs
• DDR3 DDR4 memory supply for VR12
Features
• VR12 compliant with 25 MHz SVID bus rev. 1.5
• Second generation LTB Technology^™
• Very compact dual controller:
– Up to 4 phases for core section with 2
internal drivers
– 1 phase for GFX section with internal driver
• Input voltage up to 12 V
• SMBus interface for power management
• SWAP, Jmode, multi-rail only support
• Programmable offset voltage
• Single NTC design for TM, LL and IMON
thermal compensation (for each section)
• VFDE for efficiency optimization
• DPM - dynamic phase management
• Dual differential remote sense
• 0.5% output voltage accuracy
• Full-differential current sense across DCR
• AVP - adaptive voltage positioning
• Programmable switching frequency
• Dual current monitor
• Pre-biased output management
• High-current embedded drivers optimized for
7 V operation
• OC, OV, UV and FB disconnection protection
• Dual VR_READY
• VFQFPN56 7x7 mm package with exposed
pad
Description
The L6718 is a very compact, digitally controlled
and cost effective dual controller designed to
power Intel^® VR12 processors. Dedicated
pinstrapping is used to program the main
parameters.
The device features from 2 to 4-phase
programmable operation for the core section
providing 2 embedded drivers. A single-phase
with embedded driver and with independent
control loop is used for GFX.
The L6718 supports power state transitions
featuring VFDE and a programmable DPM,
maintaining the best efficiency over all loading
conditions without compromising transient
response.
Second generation LTB Technology^™ allows a
minimal cost output filter providing fast load
transient response. The controller assures fast
and independent protection against load
overcurrent, under/overvoltage and feedback
disconnections.
The device is available in VFQFPN56, 7x7 mm
compact package with exposed pad.
Table 1. Device summary
Order code
Package
Packaging
L6718
VFQFPN56 7x7 mm
Tray
L6718TR VFQFPN56 7x7 mm Tape and reel
April 2013
This is information on a product in full production.
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