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L6718 Fiches technique(PDF) 1 Page - STMicroelectronics

No de pièce L6718
Description  SMBus interface for power management
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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This is information on a product in full production.
April 2013
DocID023399 Rev 3
1/71
71
L6718
Digitally controlled dual PWM with embedded drivers for VR12
processors
Datasheet
- production data
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
Applications
• High-current VRM / VRD for desktop / server /
new generation workstation CPUs
• DDR3 DDR4 memory supply for VR12
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 Technologyallows 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.
VFQFPN56 -7x7 mm
Table 1. Device summary
Order code
Package
Packaging
L6718
VFQFPN56 7x7 mm
Tray
L6718TR
VFQFPN56 7x7 mm
Tape and reel
www.st.com


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