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NCP1601A Datasheet(PDF) 2 Page - ON Semiconductor

Part No. NCP1601A
Description  Compact Fixed Frequency Discontinuous or Critical Conduction Voltage Mode Power Factor Correction Controller
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1601A Datasheet(HTML) 2 Page - ON Semiconductor

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NCP1601A, NCP1601B
http://onsemi.com
2
AC
Input
EMI
Filter
Output
Ramp GND
Vcontrol Drv
FB
VCC
CS
Osc
15 V
NCP1601X
Figure 1. Typical Application Circuit
Figure 2. Functional Block Diagram
FB
ref
reg
V
I
I
96%
+
+
+
+
&
&
1
8
4
5
2
3
7
6
&
AC
Input
EMI
Filter
Cfilter
L
RCS
IS
off
on
Cbulk
RFB
Output Voltage (Vout)
IFB
RS
CS
FB / SD
Ccontrol
Vcontrol
9 V
9 V
18 V
VCC(on) / 9 V
VCC
VCC
300 k
Current
Mirror
Vcontrol Processing
UVLO
VCC
Regulation Block
Current
Mirror
3.9 Vmax
clamp
Internal Bias
Reference
Block
ref
I
Overvoltage
Protection
(IFB > 107% Iref)
Overcurrent
Protection
(IS > 203 mA)
Zero Current
Detection
(IS < 14 mA)
Shutdown / UVP
(IFB < 8% Iref)
PFC
Modulation
R1
R2
R3
C3
C1
Thermal
Shutdown
(95 / 140
°C)
01
Vton
Ich
Cramp
Ramp
9 V
9 V
VCC
9 V
0
1
45
mA
94
mA
COSC
Osc / Sync
01
Oscillator / Synchronization Block
Output
Driver
Drv
GND
delay
5 / 3.5 V
S
R
Q
S
R
Q
OR


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