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NX2422CMTR Ver la hoja de datos (PDF) - Microsemi Corporation
Número de pieza
componentes Descripción
Fabricante
NX2422CMTR
TWO PHASE SYNCHRONOUS PWM CONTROLLER WITH INTEGRATED FET DRIVER, DIFFERENTIAL CURRENT SENSE
Microsemi Corporation
NX2422CMTR Datasheet PDF : 20 Pages
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BLOCK DIAGRAM
+12V
VCCDRV
1.25V
OFF
ON
+5V
5VCC
Bias
0.6V
generator
1.6V
UVLO
UVLO
1.25V
+5V
ON
OFF
EN2_B
0.82/0.74
ENBUS_2
start
Hiccup
0.35
/0.3V
REFIN
DAC
0.6V
FILTER
PVCC
+5V
OVP
BST1
DrvH1
SW1
FET
driver
DrvL1
PGND
3.6
VOUT
/3.3V
FB
VCOMP
Rt
Vp*130%
Digital
start
Vp
SS_finish
Dis_EA
ramp1
Set1
Two phase
OSC
set2
ramp2
ENBUS_2
RQ
S
BST2
DrvH2
SW2
DrvL2
K=30
KR
V1.25
R
CS01
CS02
KR
R
PWM control
logic
and driver
CS+1
CS-1
FILTER
OVP
V1.25
KR
R
CS+2
FB
Vp*75%
R
KR
Slave channel control
CS-2
CScomp(SS/EN)
SS_finished
Hiccup
Hiccup
Logic
V1.25
Σ
÷
2
gm=0.04mA/V
Σ
IOUT/IMAX
INREFOUT/POK
1.25V
6 Cycles
filter
1.25V
AGND
SS_FINISHED
Vp*70%
FB
NX2422
+12V
VOUT
+1.2V/50A
Figure 2 - Block diagram of NX2422
Rev.2.1
7
12/01/08
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