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NX2601

更新时间： 2024-09-27 12:49:59
品牌 Logo 应用领域
美高森美 - MICROSEMI 稳压器控制器
页数 文件大小 规格书
25页 1010K
描述
DUAL SYNCHRONOUS PWM CONTROLLER WITH NMOS LDO CONTROLLER & 5V BIAS REGULATOR

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中文翻译

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NX2601 数据手册

 浏览型号NX2601的Datasheet PDF文件第2页浏览型号NX2601的Datasheet PDF文件第3页浏览型号NX2601的Datasheet PDF文件第4页浏览型号NX2601的Datasheet PDF文件第5页浏览型号NX2601的Datasheet PDF文件第6页浏览型号NX2601的Datasheet PDF文件第7页 
Evaluation board available.  
NX2601  
DUAL SYNCHRONOUS PWM CONTROLLER WITH NMOS LDO  
CONTROLLER & 5V BIAS REGULATOR  
PRELIMINARY DATA SHEET  
Pb Free Product  
FEATURES  
DESCRIPTION  
n Two channel PWM with out of phase operation  
The NX2601 controller IC is a triple controller with a dual  
channel synchronous Buck controller IC and an LDO con-  
troller designed for multiple converters such as PCIe  
graphic card applications .The two synchronous PWM  
controllers are 180 degree out of phase which reduces  
the input ripple current, allowing to reduce the # of input  
capacitors.Another main feature of the part is that it can  
operate from single 12V supply while maintaining a regu-  
lated 5V supply for the biasing and the internal drivers.  
Other features of NX2601 are: programmable frequency  
from 200kHz to 1MHz, independent digital soft start and  
enable pins for each controller which allows for different  
power sequencing, Adaptive driver provides optimized ef-  
ficiency while maintain sufficient deadband, Vcc  
undervoltage lock out and current limiting using an Rds-  
on of the external MOSFET with HICCUP feature.  
n Individual digital soft start for two PWM output  
and LDO controller  
n
n
Bus voltage operation from 2V to 25V  
Hiccup Current limit by sensing Rdson of MOSFET  
n Adjustable frequency up to 1Mhz per channel  
n Adaptive deadband time  
n Three enable pin available allows for independent  
power sequencing  
n MLPQ-32L package offers small size  
n Pb-free and RoHS compliant  
APPLICATIONS  
n
n
n
PCI Graphic Card on board converters  
Vddq Supply in mother board applications  
On board DC to DC such as  
12V to 3.3V, 2.5V or 1.8V  
n
FPGA and Set Top Box Applications  
TYPICAL APPLICATION  
10  
R11  
+5V  
C15  
1uF  
R12  
5k  
C17  
68uF  
5
23 C1  
1uF  
11  
R13  
1.65k  
VCC  
+5V  
REG FB  
PVCC1  
VIN1  
L1 1uH  
47pF  
C16  
VIN1  
+12V  
D1  
24  
C3  
100uF  
C2  
180uF  
BST1  
10  
REG OUT  
AUXVCC  
LDO OUT  
2N3904  
M5  
C4  
5k  
0.1uF  
M1  
9
8
VIN2  
+3.3V  
25  
26  
C24 1uF  
R15  
HDRV1  
L2 0.78uH  
C20  
VOUT1  
C18  
150uF  
SW1  
+1.2V@15A  
0
R1 10.5k  
150pF  
27  
C7  
VOUT3  
+2.5V/2A  
7
OCP1  
LDO FB  
ENLDO  
2 x (2R5TPD680M6,680uF,6mohm)  
R2  
1.5k  
R16  
5k  
R17  
2.35k  
R3  
10.4k  
22  
21  
C19  
150uF  
LDRV1  
R18  
1.5k  
M2  
C6  
2.7nF  
PGND1  
Fb1  
29  
28  
3
R5 5k  
C22  
OFF R25  
10k  
8.2nF C5  
220pF  
+5V  
R4  
20.8k  
R19  
1.25k  
2N3904  
Comp1  
PVCC2  
C25  
1uF  
ON  
R26  
10k  
18 C8  
1uF  
R20  
6.8k  
D2  
1
ENSW1  
VIN1  
17  
C9  
180uF  
BST2  
R21  
C11  
0.1uF  
1.25k  
M3  
L4 1.5uH  
16  
15  
HDRV2  
OFF R27  
10k  
2N3904  
VOUT2  
2
6
ON  
ENSW2  
RT  
R28  
10k  
SW2  
+1.8V/10A  
R6  
14  
6k  
C14  
OCP2  
3 x (4TPE150M,150uF,18mohm)  
R7  
820  
R8  
8.7k  
M4  
19  
LDRV2  
20  
12  
C13  
PGND2  
Fb2  
R24  
C21  
62k  
3.3nF  
30  
31  
VP  
VREF  
C12  
R10  
R9  
6.97k  
13  
1nF  
Comp2  
GND  
5k  
10nF  
4
220pF  
C23  
Figure1 - Typical application of 2601  
PATENT PENDING  
ORDERING INFORMATION  
Device  
NX2601CMTR  
Temperature  
0 to 70oC  
Package  
MLPQ-32L  
Frequency  
Pb-Free  
Yes  
200kHz to 1MHz  
Rev. 2.3  
12/01/06  
1
1234567...25

中文翻译

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