80
70
60
50
40
30
20
10
0
Temperature (
o
C)
Time
The driver lifespan is based on capacitor working temperature.
Driver lifetime & LED light decay rate
90000
80000
70000
60000
50000
40000
30000
20000
10000
0
65
o
C
75
o
C
85
o
C
95
o
C
105
o
C
Lifetime (hours)
Capacitor Tc (
o
C)
Driver Lifetime
% Luminous Flux
FLUX
△
U'V'
110%
105%
100%
95%
90%
85%
80%
75%
70%
0.0040
0.0035
0.0030
0.0025
0.0020
0.0015
0.0010
0.0005
0.0000
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
LifeTime (hours)
Polar Diagram Comparison
AVERAGE BEAM ANGLE (50%): 79.4DEG
14:29:22
15:20:16
16:11:16
17:02:16
17:53:16
18:44:16
19:35:16
20:26:16
21:17:16
22:08:16
22:59:16
23:50:16
0:41:16
1:32:16
2:23:16
3:14:16
4:05:16
4:56:16
5:47:16
6:38:16
7:29:16
8:20:16
IC
Capacitor
MOS
PCB
Fitting
Voltage transformer
Environmental temperature
UNIT: cd
C0/180, 80.9 deg
C30/210, 80.5 deg
C60/240, 79.9 deg
C90/270, 76.1 deg
500
1000
1500
2000
2500
0
O
+/-180
O
150
O
-150
O
120
O
-120
O
90
O
-90
O
60
O
-60
O
30
O
-30
O
0
LED Light Decay Rate
Temperature
●
The testing is operated at 25°C
●
The lifetime of capacitor, minimum of 5,000 hours if operated at 105°C, will be doubled whenever the temperature drops 10°C
●
The highest withstand temperature of IC, MOS could be 120°C
●
The highest withstand temperature of LED junction temperature is 150°C
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