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NCP4326 Datasheet(PDF) 3 Page - ON Semiconductor

Part No. NCP4326
Description  Secondary Controller for Multi−Output Quasi−Resonant Switchmode Power Supplies
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP4326
http://onsemi.com
3
L1
Vout_12V
GND
D5
D6
Q2
Q8
C3
2.2mF
C5
C8
Vout_3V3
Vout_5V
DRV1
DRV2
C4
100uF
Dem
GND
GND
GND
Mag
Vout_3V3
Vout_5V
DRV1
DRV2
Q1
R12
0R5
D2
C2
P1
R18
8.66k
R17
1k
GND
U2
SFH6151−2
R16
1k
R9
RES1
R5
3.32k
R15
1.1k
GND
R6
825
R13
511
GND
C15
10 nF
R11
RES1
Mag
VregM
VregM
C13
10 nF
R8
RES1
C14
10 nF
R7
RES1
R10
RES1
C17
CAP
C16
CAP
GND
EN1
EN2
L2 10
mH
L3
22
mF
C6
C7
DMG
1
FB
2
CS
3
GND
4
DRV
5
VCC
6
NC 7
HV 8
U1
NCP1207A
D1
1N4148
R3
150
C1
R2
4.7k
R4
15k
C12
100 nF
GND
C11
100 nF
C10
2.2 nF
STBY
GND
GND
R17
10k
T1
TRANSFO
D4
C9
Neg Out
VCC
12
CP1
1
FB1
2
CP2
4
FB2
5
Ct
6
SYNC
7
CPm
8
FBm
9
EN2
3
DRV2
11
EN1
16
DRV1
13
GND
15
Flux
14
STBY
10
U3
NCP4326
GND
Figure 2. Typical Application Schematic
100uF
100uF
10
mH
2.2
mH
470
mF
470
mF
470
mF
220
mF
D8
+
+
+
+
+
+
+
+
Dem
R1
39k
C18
47pF




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