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NX2415

更新时间： 2024-11-18 06:00:35
品牌 Logo 应用领域
美高森美 - MICROSEMI 驱动器控制器
页数 文件大小 规格书
21页 654K
描述
TWO PHASE SYNCHRONOUS PWM CONTROLLER WITH INTEGRATED FET DRIVER AND DIFFERENTIAL CURRENT SENSE

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中文翻译

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NX2415 数据手册

 浏览型号NX2415的Datasheet PDF文件第2页浏览型号NX2415的Datasheet PDF文件第3页浏览型号NX2415的Datasheet PDF文件第4页浏览型号NX2415的Datasheet PDF文件第5页浏览型号NX2415的Datasheet PDF文件第6页浏览型号NX2415的Datasheet PDF文件第7页 
Evaluation board available.  
NX2415  
TWO PHASE SYNCHRONOUS PWM CONTROLLER WITH  
INTEGRATED FET DRIVER AND DIFFERENTIAL CURRENT SENSE  
PRELIMINARY DATA SHEET  
Pb Free Product  
FEATURES  
n Differential inductor DCR sensing eliminates the  
problem with layout parasitic  
n External programmable voltage droop  
n Low Impedance On-board Drivers  
n Hiccup current limit  
n Power Good for power sequencing  
n Enable Signal allows external shutdown as well as  
programming the BUS voltage start up threshold  
n Programmable frequency  
DESCRIPTION  
The NX2415 is a two-phase PWM controller with inte-  
grated FET driver designed for low voltage high current  
application. The two phase synchronous buck converter  
offers ripple cancelation for both input and output. The  
NX2415 uses differential remote sensing using either  
current sense resistor or inductor DCR sensing to achieve  
accurate current matching between the two channels.  
Differential sensing eliminates the error caused by PCB  
board trace resistance that is otherwise is present when  
using a single ended voltage sensing. In addition the  
NX2415 offers high drive current capability especially for  
keeping the synchronous MOSFET off during SW node  
transition, accurate programmable droop allowing to re-  
duce number of output capacitors, accurate enable cir-  
cuit provides programmable start up point for Bus volt-  
age, PGOOD output, programmable switching frequency  
and hiccup current limiting circuitry.  
n Prebias start up  
n Over voltage protection without negative spike at  
output  
n Pb-free and RoHS compliant  
APPLICATIONS  
n
Graphic card High Current Vcore Supply  
n High Current +40A on board DC to DC converter  
applications  
TYPICAL APPLICATION  
10  
23  
+5V  
31  
1uF  
30  
PVCC1  
1uF  
+5V  
1uH  
VCC  
EN  
VIN1  
2 x 10uF  
+12V  
24  
10k  
BST1  
HDRV1  
SW1  
180uF  
100uF  
0.22uF  
2.15  
25  
26  
M1  
M2  
6.49k  
+12V  
0.68uH  
VOUT  
+1.2V/50A  
1.65k  
29  
ENBUS  
op  
2 x (1000uF,7mohm ESR)  
620  
1uF  
22  
21  
7
2
LDRV1  
PGND1  
DROOP  
RT  
45.3k  
10k  
620  
+5V  
9
10  
28  
11  
CS+1  
CS-1  
PGOOD  
CSCOMP  
18  
17  
+5V  
PVCC2  
VOUT  
430  
220nF  
2.2nF  
1uF  
3
PGSEN  
10uF  
BST2  
HDRV2  
SW2  
10k  
1nF  
20k  
0.22uF  
2.15  
16  
15  
M3  
M4  
1.8nF  
3.92k  
5
FB  
0.68uH  
6.8nF  
5.62k  
6
VCOMP  
10k  
20k  
19  
20  
620  
1uF  
150pF  
10nF  
100k  
2N3906  
1k  
LDRV2  
PGND2  
4
8
1
VP  
620  
OCP  
180k  
12  
13  
VREF  
CS+2  
CS-2  
10nF  
1nF  
14  
IOUT  
AGND  
32  
Figure1 - Typical application of NX2415  
ORDERING INFORMATION  
Device  
NX2415CMTR  
Temperature  
0 to 70oC  
Package  
MLPQ-32L  
Frequency  
Pb-Free  
200kHz to 1MHz  
Yes  
Rev.4.8  
05/06/08  
1
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