L6919E datasheet, PDF - EEWORLD Datasheet

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L6919E: DescriptionSwitching Controllers 5-Bit Dual Ph Contlr; CategoryPower/power management The power supply circuit; File Size659KB，33 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/; Environmental Compliance

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L6919E Overview

Switching Controllers 5-Bit Dual Ph Contlr

L6919E Parametric

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

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L6919E

5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER

WITH DYNAMIC VID MANAGEMENT

C U R R EN T

AV G

-O

APPLICATIONS

POWER SUPPLY FOR SERVERS AND

WORKSTATIONS

POWER SUPPLY FOR HIGH CURRENT

MICROPROCESSORS

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

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.

VC C D R

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

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

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

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

L GAT E2

PHAS E2

3 2k

PW M2

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

COM P

V cc

September 2003

1/33

L6919E Related Products

	L6919E	L6919ETR	E-L6919ETR
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	SO-28	SO-28	SOP,
Contacts	28	28	28
Reach Compliance Code	compliant	compliant	unknown
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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