ncp1001 ON Semiconductor, ncp1001 Datasheet - Page 14

• Manufacturer Part Number: ncp1001
• Description: Integrated Off-line Switching Regulator
• Manufacturer: ON Semiconductor

APPLICATION #1: Offline Converter Provides
5.0 Volt, 1.0 Amp Output for Small Electronic
Equipment
converters offers a low cost, high efficiency power source
for low power, electronic equipment. It serves the same
function as small, line frequency transformers, but with the
added benefits of line and load regulation, transient
suppression, reduction in weight, and operation across the
universal input voltage range.
derived from an input source of 85 to 265 Vac, and 50 Hz to
60 Hz. This range of input voltages will allow this circuit to
function virtually anywhere in the world without
modification. The output is regulated and current limited,
and EMI filters are included on both the input and output.
For additional information on this application, please order application note AND8019/D from the Literature Distribution Center or download
from our website at http://onsemi.com.
V in
ON Semiconductor’s NCP1000 series of offline
This kit provides a 5.0 volt, 1.0 amp output, which is
C5
F1
C1
p/o U2
C4
R S
6.8
6.8
R7
1
D1 − D4
1000
NCP
C2a C2b
NCP1000, NCP1001, NCP1002
APPLICATIONS INFORMATION
Figure 21. Wall Adapter Schematic
R1
+
+
http://onsemi.com
14
R2
C3
Converter Test Data
C8
Line Regulation
Load Regulation
Combined Line/
Load Regulation
Output Ripple
Input Power
Power Factor
Efficiency
D6
Parameter
L2
D5
C6
85 v v Vin v 265 v
0 A v lo v 1.0 A
85 v v Vin v 265 v
.09 A v lo v 1.0 A
lo = 1.0 A
V
V
V
V
V
V
in
in
in
in
in
in
C9
= 115 v, lo = 1.0 A
= 220 v, lo = 1.0 A
= 115 v, lo = 1.0 A
= 220 v, lo = 1.0 A
= 115 v, lo = 1.0 A
= 220 v, lo = 1.0 A
Conditions
U3
C7
p/o U2
R3
C10
R5
R4
DVo = 6.0 mV
DVo = 8.0 mV
DVo = 10 mV
100 mV
7.75 watts
7.88 watts
−.57
−.49
h = 66%
h = 64%
RETURN
5 V, 1 A
Data
pp