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NCP5424A/D PDF预览

NCP5424A/D

更新时间: 2024-11-25 23:53:27
品牌 Logo 应用领域
其他 - ETC 控制器
页数 文件大小 规格书
20页 133K
描述
Dual Synchronous Buck Controller with Input Current Sharing

NCP5424A/D 数据手册

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NCP5424A  
Dual Synchronous  
Buck Controller with Input  
Current Sharing  
The NCP5424A is a flexible dual N−channel synchronous buck  
2
controller utilizing V  
control for fast transient response and  
http://onsemi.com  
excellent line and load regulation. This highly versatile controller can  
be configured as a single two phase output converter that draws  
programmable amounts of current from two different input voltages or  
all current from one supply. The NCP5424A can also be configured as  
two independent out−of−phase controllers.  
SO−16  
D SUFFIX  
CASE 751B  
16  
1
Using the NCP5424A in a current sharing input configuration is  
ideal for applications where more power is required than is available  
from one supply, such as video cards or other plug−in boards. When  
configured as a dual output controller, the output of one controller can  
be divided down and used as the reference for the second controller.  
This tracking capability is useful in applications such as Double Data  
Rate (DDR) Memory power where the termination voltage must track  
VDD.  
PIN CONNECTIONS AND  
MARKING DIAGRAM  
1
16  
GATE(H)1  
GATE(L)1  
GND  
GATE(H)2  
GATE(L)2  
V
CC  
BST  
R
OSC  
The NCP5424A provides a cycle−to−cycle current limit allowing  
the system to handle transient overcurrent events. In addition, the  
NCP5424A provides Soft Start, undervoltage lockout, and built−in  
adaptive FET nonoverlap time to prevent shoot through.  
IS+1  
IS+2  
V
V
FB−2  
IS−  
FB+2  
V
FB1  
COMP1  
COMP2  
Features  
A
= Assembly Location  
= Year  
Cycle−to−Cycle Current Limit  
Programmable Soft Start  
100% Duty Cycle for Enhanced Transient Response  
150 kHz to 600 kHz Programmable Frequency Operation  
WL = Wafer Lot  
Y
WW = Work Week  
Switching Frequency Set by Single Resistor  
Out−Of−Phase Synchronization Between the Channels Reduces the  
Input Filter Requirement  
ORDERING INFORMATION  
Device  
Package  
SO−16  
SO−16  
Shipping  
Undervoltage Lockout  
Applications  
48 Units/Rail  
NCP5424AD  
2500 Tape & Reel  
NCP5424ADR2  
Video Graphics Card  
DDR Memory  
High Current (Two−Phase) Power Supplies  
Dual Output DC−DC Converters  
Semiconductor Components Industries, LLC, 2003  
1
Publication Order Number:  
August, 2003 − Rev. 0  
NCP5424A/D  

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