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L6917BD PDF预览

L6917BD

更新时间: 2024-11-08 22:31:43
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
33页 593K
描述
5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER

L6917BD 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SO-28
针数:28Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.81Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING CONTROLLER控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最小输入电压:8.5 V
标称输入电压:12 VJESD-30 代码:R-PDSO-G28
JESD-609代码:e4长度:17.9 mm
功能数量:1端子数量:28
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP28,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:2.65 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:PHASE-SHIFT最大切换频率:600 kHz
技术:BCDMOS温度等级:COMMERCIAL
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.5 mm
Base Number Matches:1

L6917BD 数据手册

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L6917B  
5 BIT PROGRAMMABLE DUAL-PHASE CONTROLLER  
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 COMPLIANT WITH VRM 9.0  
0.8% INTERNAL REFERENCE ACCURACY  
10% ACTIVE CURRENT SHARING  
ACCURACY  
SO-28  
ORDERING NUMBERS:L6917BD  
L6917BDTR (Tape & Reel)  
DESCRIPTION  
DIGITAL 2048 STEP SOFT-START  
OVERVOLTAGE PROTECTION  
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,  
the system works in Constant Current mode.  
OVERCURRENT PROTECTION REALIZED  
USING THE LOWER MOSFET'S R  
SENSE RESISTOR  
OR A  
dsON  
300 kHz INTERNAL OSCILLATOR  
OSCILLATOR EXTERNALLY ADJUSTABLE  
UP TO 600kHz  
POWER GOOD OUTPUT AND INHIBIT  
FUNCTION  
REMOTE SENSE BUFFER  
PACKAGE: SO-28  
APPLICATIONS  
POWER SUPPLY FOR SERVERS AND  
WORKSTATIONS  
POWER SUPPLY FOR HIGH CURRENT  
MICROPROCESSORS  
DISTRIBUTED DC-DC CONVERTERS  
BLOCK DIAGRAM  
ROSC / INH  
SGND  
VCCDR  
BOOT1  
PGOOD  
UGATE1  
PHASE1  
HS  
2
PHASE  
OSCILLATOR  
PWM1  
-
+
CH 1 OVER  
CURRENT  
LGATE1  
ISEN1  
LS  
DIGITAL  
SOFT START  
VCC  
VCCDR  
CURRENT  
READING  
LOGIC  
AND  
PROTECTIONS  
PGNDS1  
PGND  
TOTAL  
CURRENT  
+
VID4  
VID3  
AVG  
CURRENT  
PGNDS2  
CURRENT  
READING  
VID2  
VID1  
VID0  
< >  
DAC  
CH2 OVER  
CURRENT  
ISEN2  
CH1 OVER  
CURRENT  
LGATE2  
CH  
CURRENT  
2 OVER  
LS  
10k  
+
-
10k  
10k  
IFB  
FBG  
FBR  
PHASE2  
UGATE2  
BOOT2  
PWM2  
ERROR  
AMPLIFIER  
REMOTE  
BUFFER  
HS  
10k  
Vcc  
VSEN  
COMP  
Vcc  
FB  
September 2002  
1/33  

L6917BD 替代型号

型号 品牌 替代类型 描述 数据表
L6917BDTR STMICROELECTRONICS

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