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E-L6919ETR

Description
Switching Controllers 5-Bit Dual Ph Contlr
CategoryPower/power management    The power supply circuit   
File Size659KB,33 Pages
ManufacturerSTMicroelectronics
Websitehttp://www.st.com/
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E-L6919ETR Overview

Switching Controllers 5-Bit Dual Ph Contlr

E-L6919ETR Parametric

Parameter NameAttribute value
Parts packaging codeSOIC
package instructionSOP,
Contacts28
Reach Compliance Codeunknown
ECCN codeEAR99
Is SamacsysN
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage13.8 V
Minimum input voltage10.2 V
Nominal input voltage12 V
JESD-30 codeR-PDSO-G28
length17.9 mm
Number of functions1
Number of terminals28
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Certification statusNot Qualified
Maximum seat height2.65 mm
surface mountYES
Switch configurationPHASE-SHIFT
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
width7.5 mm
Base Number Matches1
L6919E
5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER
WITH DYNAMIC VID MANAGEMENT
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C U R R EN T
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APPLICATIONS
s
POWER SUPPLY FOR SERVERS AND
WORKSTATIONS
s
POWER SUPPLY FOR HIGH CURRENT
MICROPROCESSORS
s
DISTRIBUTED POWER SUPPLY
BLOCK DIAGRAM
O S C / I NH
S GN D
2 PHASE OPERATION WITH
SYNCRHONOUS RECTIFIER CONTROL
ULTRA FAST LOAD TRANSIENT RESPONSE
INTEGRATED HIGH CURRENT GATE
DRIVERS: UP TO 2A GATE CURRENT
TTL-COMPATIBLE 5 BIT PROGRAMMABLE
OUTPUT FROM 0.800V TO 1.550V WITH
25mV STEPS
DYNAMIC VID MANAGEMENT
0.6% OUTPUT VOLTAGE ACCURACY
10% ACTIVE CURRENT SHARING ACCURACY
DIGITAL 2048 STEP SOFT-START
OVERVOLTAGE PROTECTION
OVERCURRENT PROTECTION REALIZED
USING THE LOWER MOSFET'S R
dsON
OR A
SENSE RESISTOR
OSCILLATOR EXTERNALLY ADJUSTABLE
AND INTERNALLY FIXED AT 200kHz
POWER GOOD OUTPUT AND INHIBIT
FUNCTION
REMOTE SENSE BUFFER
PACKAGE: SO-28
SO-28
ORDERING NUMBERS:L6919E
L6919ETR
b
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DESCRIPTION
The device is a power supply controller specifically
designed to provide a high performance DC/DC
conversion for high current microprocessors. The
device implements a dual-phase step-down con-
troller with a 180° phase-shift between each
phase. A precise 5-bit digital to analog converter
(DAC) allows adjusting the output voltage from
0.800V to 1.550V with 25mV binary steps manag-
ing On-The-Fly VID code changes.
The high precision internal reference assures the
selected output voltage to be within ±0.6%. The
high peak current gate drive affords to have fast
switching to the external power mos providing low
switching losses.
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 Constant Cur-
rent mode.
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BOO T 1
2 P H AS E
O S C IL L ATOR
L O G IC PW M
PW M1
A DA PTIV E A NT I
CRO SS CO ND UCT IO N
PGO O D
HS
U
T
GA
E1
PHAS E1
C U RR EN T
COR R EC TI ON
DIGIT AL
SOFT- START
LOGIC AN D
P ROTE CTION S
CH1
O CP
LS
L GAT E1
ISE N1
PGN DS1
PGN D
PGN DS2
ISE N2
V CC
V CC DR
TO TAL
C UR REN T
CUR REN T
REA DIN G
VID 4
VID 3
VID 2
VID 1
VID 0
D AC
CH 2 OC P
C H1 OCP
CUR REN T
REA DIN G
CU R R EN T
C OR R EC TI ON
32k
3 2k
I
FB
CH2
O CP
FB G
FB R
LO G IC PW M
A DA PT IV E A N T I
CRO SS CO N DU CT IO N
LS
L GAT E2
PHAS E2
3 2k
PW M2
HS
32k
R EMO TE
BU FFE R
ERR OR
A MPL IF IER
U GA T E2
Vc c
BOO T 2
V S EN
FB
COM P
V cc
September 2003
1/33

E-L6919ETR Related Products

E-L6919ETR L6919ETR L6919E
Description Switching Controllers 5-Bit Dual Ph Contlr Switching Controllers 5-Bit Dual Ph Contlr Switching Controllers 5-Bit Dual Ph Contlr
Parts packaging code SOIC SOIC SOIC
package instruction SOP, SO-28 SO-28
Contacts 28 28 28
Reach Compliance Code unknown compliant compliant
ECCN code EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 13.8 V 13.8 V 13.8 V
Minimum input voltage 10.2 V 10.2 V 10.2 V
Nominal input voltage 12 V 12 V 12 V
JESD-30 code R-PDSO-G28 R-PDSO-G28 R-PDSO-G28
length 17.9 mm 17.9 mm 17.9 mm
Number of functions 1 1 1
Number of terminals 28 28 28
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP SOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Certification status Not Qualified Not Qualified Not Qualified
Maximum seat height 2.65 mm 2.65 mm 2.65 mm
surface mount YES YES YES
Switch configuration PHASE-SHIFT PHASE-SHIFT PHASE-SHIFT
Terminal form GULL WING GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL
width 7.5 mm 7.5 mm 7.5 mm
Is it Rohs certified? - conform to conform to
Maker - STMicroelectronics STMicroelectronics
JESD-609 code - e4 e4
Maximum output current - 2 A 2 A
Encapsulate equivalent code - SOP28,.4 SOP28,.4
Peak Reflow Temperature (Celsius) - NOT SPECIFIED NOT SPECIFIED
Maximum switching frequency - 178 kHz 178 kHz
Terminal surface - Nickel/Palladium/Gold (Ni/Pd/Au) Nickel/Palladium/Gold (Ni/Pd/Au)
Maximum time at peak reflow temperature - NOT SPECIFIED NOT SPECIFIED

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