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CS5305/D

更新时间： 2024-11-15 23:43:47
品牌 Logo 应用领域
其他 - ETC 开关控制器
页数 文件大小 规格书
32页 262K
描述
Three-Phase Synchronous Switching Step-Down Controller with Single Wire Current Sharing

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中文翻译

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CS5305/D 数据手册

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CS5305  
Three-Phase Synchronous  
Switching Step-Down  
Controller with Single  
Wire Current Sharing  
http://onsemi.com  
MARKING  
The CS5305 provides a low–cost, single–controller solution for the  
low–voltage, high–current power needs of next–generation  
workstation and server processors. This IC provides high accuracy and  
the industry’s fastest transient response, reducing the need for large  
banks of output capacitors and providing the most compact, reliable,  
and economical power supply.  
DIAGRAMS  
28  
CS5305  
Since each phase’s output voltage and current feed back to develop  
AWLYYWW  
28  
2
the PWM ramp signal (enhanced V  
control), the CS5305 shares  
1
output current accurately between phases. Accurate current sharing  
means that the power supply design does not need to use power  
components rated to handle mismatched current per phase. The  
1
SO–28L  
DW SUFFIX  
CASE 751F  
2
enhanced V control compensates for variations in both line and load.  
The IC’s built–in single wire current sharing capability allows easy  
paralleling of multiple Voltage Regulator Modules (VRMs) based on  
the CS5305. The paralleled VRMs use a shared bus to provide high  
current and high reliability to multiple microprocessor workstations  
or servers.  
A
= Assembly Location  
= Year  
WL, L = Wafer Lot  
YY, Y  
WW, W = Work Week  
The CS5305 meets VRM 9.x specifications with its Power Good,  
Enable, Differential Remote Sense, and single–wire Current Share  
features. The product fits server and workstation VRMs, and can be  
used to power Embedded Processors. The IC provides the simplest,  
lowest–cost solution for any low voltage, high current power supply.  
PIN CONNECTIONS  
1
28  
OCSET  
GND  
R
GATE1  
GATE2  
GATE3  
DRVON  
OSC  
ENABL  
CS1  
Features  
• Enhanced V Control Method  
CS2  
CS3  
2
V
CC  
CS  
SGND  
REF  
• VRM 9.x Compatible VID Codes  
• Lossless Inductor Current Sensing  
I
FB  
PWRGDS  
I
V
V
V
V
V
OUT  
ID0  
ID1  
SHARE  
SCOMP  
• Single Wire Active Current Sharing Between Converters  
• Auto Master–Slave Current Share Control Method  
• Programmable 200 to 800 kHz Switching Frequency  
• Programmable Adaptive Voltage Positioning  
• Differential Remote Sense  
ID2  
ID3  
ID4  
V
DRP  
V
FB  
COMP  
PWRGD  
ORDERING INFORMATION  
• Pulse–by–Pulse Current Limit  
• Master Hiccup Overcurrent Protection through Single  
Wire Share Bus  
Device  
CS5305GDW28  
CS5305GDWR28  
Package  
SO–28L  
SO–28L  
Shipping  
27 Units/Rail  
• 5–Bit DAC with 1% Tolerance  
• ENABL Input  
1000 Tape & Reel  
• VRM 9.x–Compliant Power Good Output  
• Active Current Sharing During Soft Start  
Semiconductor Components Industries, LLC, 2001  
1
Publication Order Number:  
May, 2001 – Rev. 5  
CS5305/D  
1234567...32

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