L6717A Datasheet, PDF (1/57 Pages) STMicroelectronics – Dynamic phase management

L6717A
High-efficiency hybrid controller
2
with I C interface and embedded drivers
Datasheet - production data
Applications
• Hybrid high-current VRM / VRD for desktop /
server / workstation / IPC CPUs supporting PVI
and SVI interface
• High-density DC-DC converters
VFQFPN48
Description
Features
L6717A is a hybrid CPU power supply controller
embedding 2 high-current drivers for the CORE
• Hybrid controller for both PVI and SVI CPUs
G34 compliant
• Dual controller with embedded high current
drivers: 2 phases for CPU CORE + 2 PWM for
ext drivers, 1 phase for NB
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.
2
I C interface is provided to manage offset for
• Dynamic phase management (DPM)
•
2
I C interface to control offset, switching
frequency and PSI_L
CORE section, switching frequency and dynamic
phase management saving in component count
and space consumption.
• Dual-edge asynchronous architecture with LTB
®
Technology
• PSI management to increase efficiency in light-
Dynamic phase management automatically
adjusts phase-count according to CPU load
optimizing the system efficiency under all load
conditions.
load conditions
• Dual overcurrent protection: total and per-
phase compatible with Itdc and IddSpike
• Voltage positioning
The dual-edge asynchronous architecture is
®
optimized by LTB technology allowing fast load-
transient response minimizing the output
capacitor and reducing the total BOM cost.
• Dual remote sense
Fast protection against load overcurrent is
• Feedback disconnection protection
• Programmable OV protection
• Oscillator internally fixed at 200 kHz externally
provided for both the sections. Feedback
disconnection protection prevents from damaging
the load in case of misconnections in the system
board. L6717A is available in VFQFPN48
adjustable
package.
• LSLess startup to manage pre-biased output
• VFQFPN48 package
Table 1. Device summary
Order codes
Package
Packing
L6717A
L6717ATR
VFQFPN48
Tray
Tape and reel
April 2013
This is information on a product in full production.
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