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L6711

STMicroelectronics
Part Number L6711
Manufacturer STMicroelectronics
Description 3 Phase controller
Published Aug 20, 2009
Detailed Description www.DataSheet4U.com L6711 3 Phase controller with dynamic VID and selectable DACs Features ■ ■ 2A integrated gate driv...
Datasheet PDF File L6711 PDF File

L6711
L6711

Overview
www.
DataSheet4U.
com L6711 3 Phase controller with dynamic VID and selectable DACs Features ■ ■ 2A integrated gate drivers Fully differential current reading across inductor or LS MOSFET 0.
5% Output voltage accuracy 6 bit programmable output from 0.
8185V to 1.
5810V in 12.
5mV steps 5 bit programmable output from 0.
800V to 1.
550V in 25mV steps Dynamic VID management Adjustable reference voltage offset 3% active current sharing accuracy Digital 2048 step soft-start Programmable over voltage protection Integrated temperature sensor Constant over current protection Oscillator internally fixed at 150kHz (450kHz ripple) externally adjustable Output enable Integrated remote sense buffer TQFP48 7x7 Package with exposed pad TQFP48 (Exposed Pad) ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Description The device implements a three phase step-down controller with a 120° phase-shift between each phase with integrated high current drivers in a compact 7x7mm body package with exposed pad.
The device embeds selectable DAC: the output voltage ranges from 0.
8185V to 1.
5810V with 12.
5mV steps (VID_SEL = OPEN) or from 0.
800V to 1.
550V with 25mV steps (VID_SEL = GND; VID5 drives an optional +25mV offset) managing dynamic VID with 0.
5% accuracy over line and temp variations.
Additional programmable offset can be added to the voltage reference with a single external resistor.
The device assures a fast protection against load over current and load over/under voltage.
An internal crowbar is provided turning on the low side mosfet if an over-voltage is detected.
In case of over-current, the system works in Constant Current mode until UVP.
Selectable current reading adds flexibility in system design.
■ ■ ■ Applications ■ High current VRM/VRD for desktop / Server / Workstation CPUs High density DC/DC Converters ■ Order codes Part Number L6711 L6711TR Package TQFP48 TQFP48 Packing Tube Tape & Reel April 2006 Rev 4 1/50 www.
st.
com 50 www.
DataSheet4U.
com Contents L6711 Contents 1 Typical application ci...


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