L6717TR Datasheet, PDF (1/56 Pages) STMicroelectronics – High-efficiency hybrid AM2r2 controller with I2C interface and embedded drivers

L6717
High-efficiency hybrid AM2r2 controller
with I²C interface and embedded drivers
Features
■ Hybrid controller for both PVI and SVI CPUs
■ Dual controller with 2 embedded high current
drivers + 2 PWM for external driver for CPU
CORE and 1 embedded high current driver for
CPU NB
■ Dynamic phase management (DPM)
■ I²C interface to control offset, switching
frequency and power management options
■ Dual-edge asynchronous architecture with LTB
technology^®
■ PSI management to increase efficiency in light-
load conditions
■ Dual overcurrent protection: Total and per-
phase
■ Accurate voltage positioning
■ Dual remote sense
■ Feedback disconnection protection
■ Programmable OV protection
■ Oscillator internally fixed at 200 kHz externally
adjustable
■ LSLess startup to manage pre-biased output
■ VFQFPN48 Package
Applications
■ Hybrid high-current VRM / VRD for desktop /
Server / Workstation / IPC CPUs supporting
PVI and SVI interface
■ High-density DC / DC converters
VFQFPN48
VFQFPN48
Description
L6717 is a hybrid CPU power supply controller
embedding 2 high-current drivers for the CORE
section and 1 driver for the NB section - requiring
up to 2 external drivers when the CORE section
works at 4 phase to optimize the application over-
all cost.
I²C interface allows to manage offset both CORE
and NB sections, switching frequency and
dynamic phase management saving in
component count, space and power consumption.
Dynamic phase management automatically
adjusts phase-count according to CPU load
optimizing the system efficiency under all load
conditions.
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transient response minimizing the output
capacitor and reducing the total BOM cost.
Fast protection against load over current is
provided for both the sections. Feedback
disconnection protection prevents from damaging
the load in case of disconnections in the system
board.
Table 1. Device summary
L6717 is available in VFQFPN48 package.
Order codes
Package
Packing
L6717
L6717TR
VFQFPN48
Tray
Tape and reel
March 2010
Doc ID 17326 Rev 1
1/56
www.st.com
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