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参数资料
| 型号： | L6919CD |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | SO-28 |
| 文件页数： | 1/32页 |
| 文件大小： | 558K |
| 代理商： | L6919CD |
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L6919C
December 2002
s
2 PHASE OPERATION WITH
SYNCRHONOUS RECTIFIER CONTROL
s
ULTRA FAST LOAD TRANSIENT RESPONSE
s
INTEGRATED HIGH CURRENT GATE
DRIVERS: UP TO 2A GATE CURRENT
s
TTL-COMPATIBLE 5 BIT PROGRAMMABLE
OUTPUT FROM 0.800V TO 1.550V WITH
25mV STEPS
s
DYNAMIC VID MANAGEMENT
s
0.6% OUTPUT VOLTAGE ACCURACY
s
10% ACTIVE CURRENT SHARING ACCURACY
s
DIGITAL 2048 STEP SOFT-START
s
OVERVOLTAGE PROTECTION
s
OVERCURRENT PROTECTION REALIZED
USING THE LOWER MOSFET'S RdsON OR A
SENSE RESISTOR
s
OSCILLATOR EXTERNALLY ADJUSTABLE
AND INTERNALLY FIXED AT 200kHz
s
POWER GOOD OUTPUT AND INHIBIT
FUNCTION
s
REMOTE SENSE BUFFER
s
PACKAGE: SO-28
APPLICATIONS
s
POWER SUPPLY FOR SERVERS AND
WORKSTATIONS
s
POWER SUPPLY FOR HIGH CURRENT
MICROPROCESSORS
s
DISTRIBUTED POWER SUPPLY
DESCRIPTION
The device is a power supply controller specifically de-
signed to provide a high performance DC/DC conver-
sion for high current microprocessors. The device
implements a dual-phase step-down controller 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 managing On-The-Fly VID code changes.
The high precision internal reference assures the se-
lected 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 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.
SO-28
ORDERING NUMBERS:L6919CD
L6919CDTR
5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER
WITH DYNAMIC VID MANAGEMENT
BLOCK DIAGRAM
CURREN T
REA DIN G
I
FB
TO TA L
C U RRENT
C
U
RRE
NT
AVG
CH1
OCP
DA C
D IGITAL
SOF T-START
LO
G
IC
P
W
M
AD
A
P
T
IVE
A
N
T
I
CR
O
S
C
O
ND
U
C
T
IO
N
CH1 OC P
2
PH
A
S
E
OS
C
IL
L
A
T
OR
PW M1
CU
RR
E
N
T
CO
RR
E
C
T
IO
N
ERR OR
A MPL IF IER
REMO TE
BU FFE R
32k
LS
HS
Vc c
HS
BO O T 1
U
GA T E1
PH AS E1
LGAT E1
ISE N1
PG N DS 1
PG N D
PG N DS 2
ISE N2
LGAT E2
PH AS E2
UGA T E2
BO O T 2
Vcc
CO M P
FB
VS EN
FB G
FB R
VID 0
VID 1
VID 2
VID 3
VID 4
PGOO D
O S C / I N H
SGND
VC CD R
32 k
VC C D R
VC C
L
OGI
C
A
N
D
P
R
OT
E
C
T
ION
S
CH2 OC P
PW M2
CU
RR
E
N
T
CO
RR
E
C
T
IO
N
CH2
OCP
CURREN T
REA DIN G
LO
G
IC
P
W
M
A
D
AP
T
IVE
A
N
T
I
C
R
O
S
CO
ND
UC
T
IO
N
CURREN T
REA DIN G
CURREN T
REA DIN G
I
FB
TO TA L
C U RRENT
C
U
RRE
NT
AVG
CH1
OCP
DA C
D IGITAL
SOF T-START
LO
G
IC
P
W
M
AD
A
P
T
IVE
A
N
T
I
CR
O
S
C
O
ND
U
C
T
IO
N
LO
G
IC
P
W
M
AD
A
P
T
IVE
A
N
T
I
CR
O
S
C
O
ND
U
C
T
IO
N
CH1 OC P
2
PH
A
S
E
OS
C
IL
L
A
T
OR
PW M1
CU
RR
E
N
T
CO
RR
E
C
T
IO
N
ERR OR
A MPL IF IER
REMO TE
BU FFE R
32k
LS
HS
Vc c
HS
BO O T 1
U
GA T E1
PH AS E1
LGAT E1
ISE N1
PG N DS 1
PG N D
PG N DS 2
ISE N2
LGAT E2
PH AS E2
UGA T E2
BO O T 2
Vcc
CO M P
FB
VS EN
FB G
FB R
VID 0
VID 1
VID 2
VID 3
VID 4
PGOO D
O S C / I N H
SGND
VC CD R
32 k
VC C D R
VC C
L
OGI
C
A
N
D
P
R
OT
E
C
T
ION
S
CH2 OC P
PW M2
CU
RR
E
N
T
CO
RR
E
C
T
IO
N
CH2
OCP
CURREN T
REA DIN G
CURREN T
REA DIN G
LO
G
IC
P
W
M
A
D
AP
T
IVE
A
N
T
I
C
R
O
S
CO
ND
UC
T
IO
N
LO
G
IC
P
W
M
A
D
AP
T
IVE
A
N
T
I
C
R
O
S
CO
ND
UC
T
IO
N
相关PDF资料 |
PDF描述 |
|---|---|
| L6919E | SWITCHING CONTROLLER, PDSO28 |
| L6920DTR | 1.2 A SWITCHING REGULATOR, PDSO8 |
| L6920D | 1.2 A SWITCHING REGULATOR, PDSO8 |
| L6920 | 1.2 A SWITCHING REGULATOR, PDSO8 |
| L6924D013TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6919CDTR | 功能描述:DC/DC 开关控制器 Prog Dual-Phase Cont RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6919E | 功能描述:DC/DC 开关控制器 5-Bit Dual Ph Contlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L6919ETR | 功能描述:DC/DC 开关控制器 5-Bit Dual Ph Contlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| L-692 | 制造商:RHOMBUS-IND 制造商全称:Rhombus Industries Inc. 功能描述:Common Mode Inductor |
| L6920 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1V HIGH EFFICIENCY SYNCRONOUS STEP UP CONVERTER |
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