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參數資料
| 型號： | L6919 |
| 英文描述： | 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT |
| 中文描述： | 5位可編程雙相與動態VID管理控制器 |
| 文件頁數： | 1/32頁 |
| 文件大?。?/td> | 558K |
| 代理商： | L6919 |
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L6919C
December 2002
I
2 PHASE OPERATION WITH
SYNCRHONOUS RECTIFIER CONTROL
I
ULTRA FAST LOAD TRANSIENT RESPONSE
I
INTEGRATED HIGH CURRENT GATE
DRIVERS: UP TO 2A GATE CURRENT
I
TTL-COMPATIBLE 5 BIT PROGRAMMABLE
OUTPUT FROM 0.800V TO 1.550V WITH
25mV STEPS
I
DYNAMIC VID MANAGEMENT
I
0.6% OUTPUT VOLTAGE ACCURACY
I
10% ACTIVE CURRENT SHARING ACCURACY
I
DIGITAL 2048 STEP SOFT-START
I
OVERVOLTAGE PROTECTION
I
OVERCURRENT PROTECTION REALIZED
USING THE LOWER MOSFET'S R
dsON
OR A
SENSE RESISTOR
I
OSCILLATOR EXTERNALLY ADJUSTABLE
AND INTERNALLY FIXED AT 200kHz
I
POWER GOOD OUTPUT AND INHIBIT
FUNCTION
I
REMOTE SENSE BUFFER
I
PACKAGE: SO-28
APPLICATIONS
I
POWER SUPPLY FOR SERVERS AND
WORKSTATIONS
I
POWER SUPPLY FOR HIGH CURRENT
MICROPROCESSORS
I
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
REA DING
CUR R EN T
OCP
DAC
SOFT-START
CH1 OCP
PW M1
A MPLIFIER
BUFFER
32k
32k
32k
LS
LS
HS
Vcc
HS
BOOT1
PHAS E1
LGAT E1
ISEN1
PGNDS1
PGND
PGNDS2
ISEN2
LGAT E2
PHAS E2
UGATE2
BOOT2
Vcc
COMP
FB
VSEN
FBG
FBR
VID0
VID1
VID2
VID3
VID4
PGOOD
OSC / INH
SGND
VCCDR
32k
VCC DR
VCC
CH2 OCP
PW M2
OCP
REA DING
CURREN T
I
FB
TO TAL
C
A
CH1
DIGITAL
L
A
C
2
O
C
C
ERR OR
REMOTE
U
GAT E1
L
P
C
C
CH2
CURREN T
L
A
C
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相關代理商/技術參數 |
參數描述 |
|---|---|
| L6919C | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER WITH DYNAMIC VID MANAGEMENT |
| L6919CD | 功能描述:DC/DC 開關控制器 Prog Dual-Phase Cont RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| L6919CDTR | 功能描述:DC/DC 開關控制器 Prog Dual-Phase Cont RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| L6919E | 功能描述:DC/DC 開關控制器 5-Bit Dual Ph Contlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| L6919ETR | 功能描述:DC/DC 開關控制器 5-Bit Dual Ph Contlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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