0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
277V
230V
115V
(40W)
File Name:NPF-40-SPEC 2018-01-09
NPF-40 series
PF
LOAD
OUTPUT LOAD vs TEMPERATURE
STATIC CHARACTERISTIC
TOTAL HARMONIC DISTORTION (THD)
AMBIENT TEMPERATURE,Ta ( )℃
LOAD (%)
INPUT VOLTAGE (V) 60Hz
LOAD (%)
(HORIZONTAL)
POWER FACTOR (PF) CHARACTERISTIC
※De-rating is needed under low input voltage.
EFFICIENCY vs LOAD
NPF-40 series possess superior working efficiency that up to 90% can
be reached in field applications.
※ 48V Model, Tcase at 75℃
※ 48V Model, Tcase at 75℃
EFFICIENCY(%)
LOAD
THD
LOAD
※ Tcase at 75℃
40W Constant Voltage + Constant Current LED Driver
Constant Current Mode
LOAD (%)
(HORIZONTAL)
0-15 15 30 50 60 85
20
40
60
80
100
Tcase ( )℃
-40 -25 -10 0 15 30 50 60 70
20
40
60
80
100
230VAC
Input only
50
-40
230VAC
Input only
-25
90 100 125 135 145 155 165 175 180 200 230 305
100
90
80
70
60
50
40
75%
77%
79%
81%
83%
85%
87%
89%
91%
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
277V
230V
115V
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
22%
24%
50% 60% 70% 80% 90% 100%
277VAC
230VAC
115VAC
