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參數資料
| 型號： | L6917D |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數： | 1/27頁 |
| 文件大小： | 411K |
| 代理商： | L6917D |
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L6917
October 2001
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 COMPLIANT WITH VRM 9.0
I
0.8% INTERNAL REFERENCE 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
300 kHz INTERNAL OSCILLATOR
I
OSCILLATOR EXTERNALLY ADJUSTABLE
UP TO 1MHz
I
POWER GOOD OUTPUT AND INHIBIT
FUNCTION
I
REMOTE SENSE BUFFER
I
PACKAGE: SO-28
APPLICATIONS
I
POWER SUPPLY FOR SERVER AND
WORKSTATION
I
POWER SUPPLY FOR HIGH CURRENT
MICROPROCESSORS
I
DISTRIBUTED POWER SUPPLY
DESCRIPTION
The device is a power supply controller specifically
designed to provide a high performance DC/DC con-
version 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) al-
lows adjusting the output voltage from 1.100V to
1.850V with 25mV binary steps.
The high precision internal reference assures the se-
lected output voltage to be within
±
0.8%. 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
or under voltage, the system worksin HICCUP mode.
SO-28
ORDERING NUMBERS: L6917D
L6917DTR (Tape & Reel)
5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER
BLOCK DIAGRAM
READING
CURRENT
READING
IFB
TOTAL
CURR ENT
AVG
CU RRENT
CH 1 OVER
CU RR ENT
CH 2 OVER
CU RR ENT
DAC
DIGITAL
SOFT START
L
A
C
L
A
C
CH1 OVER
CU RR ENT
CH 2OVER
CURR ENT
LOGIC
AND
PROTECTIONS
2 PHASE
OSCILLATOR
PWM1
C
C
PWM2
C
C
ERROR
AMPLIFIER
BUFFER
10k
10k
10k
LS
LS
HS
Vcc
HS
BOOT1
UGATE1
PHASE1
LGATE1
ISEN1
PGNDS1
PGND
PGNDS2
ISEN2
LGATE2
PHASE2
UGATE2
BOOT2
Vcc
COMP
FB
VSEN
FBG
FBR
VID0
VID1
VID2
VID3
VID4
PGOOD
ROSC /INH
SGND
VCCDR
10k
< >
+
-
+
+
-
VCCDR
VCC
相關PDF資料 |
PDF描述 |
|---|---|
| L6917DTR | Analog IC |
| L6917 | 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER |
| L6917B | 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER |
| L6917BD | 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER |
| L6917BDTR | 5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L6917DTR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| L6918 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER |
| L6918A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 BIT PROGRAMMABLE MULTIPHASE CONTROLLER |
| L6918AD | 功能描述:DC/DC 開關控制器 Prog Multi-Phase Cnt 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 |
| L6918ADTR | 功能描述:DC/DC 開關控制器 Prog Multi-Phase Cnt 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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