參數(shù)資料
型號(hào): L6711TR
廠商: 意法半導(dǎo)體
英文描述: 3 PHASE CONTROLLER WITH DYNAMIC VID AND SELECTABLE DACs
中文描述: 3相控制器,動(dòng)態(tài)VID和可選數(shù)模轉(zhuǎn)換器
文件頁(yè)數(shù): 1/38頁(yè)
文件大?。?/td> 591K
代理商: L6711TR
1/38
L6711
November 2004
1
FEATURES
2A INTEGRATED GATE DRIVERS
FULL DIFFERENTIAL CURRENT READING
ACROSS INDUCTOR OR LOW-SIDE
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 OVERVOLTAGE
PROTECTION
INTEGRATED TEMPERATURE SENSOR
CONSTANT OVER CURRENT PROTECTION
OSCILLATOR INTERNALLY FIXED AT
150kHz (450kHz RIPPLE)
OSCILLATOR EXTERNALLY ADJUSTABLE
OUTPUT ENABLE
INTEGRATED REMOTE SENSE BUFFER
TQFP48 7x7 PACKAGE WITH EXPOSED PAD
2
APPLICATIONS
HIGH CURRENT VRM/VRD FOR DESKTOP /
SERVER / WORKSTATION CPUs
HIGH DENSITY DC/DC CONVERTERS
3
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 dy-
namic VID with 0.5% accuracy over line and temp
variations. Additional programmable offset can be
added to the voltage reference with a single exter-
nal resistor.
The device assures a fast protection against load
over current and load over/under voltage. An inter-
nal crowbar is provided turning on the low side
mosfet if an over-voltage is detected.
In case of over-current, the system works in Con-
stant Current mode until UVP.
Selectable current reading adds flexibility in sys-
tem design.
DESCRIPTION
3 PHASE CONTROLLER WITH DYNAMIC VID
AND SELECTABLE DACs
Rev. 2
Figure 1. Package
Table 1. Order Codes
Part Number
L6711
L6711TR
Package
TQFP48
TQFP48 in Tape & Reel
TQFP48 (exposed pad)
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