70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
277VAC
230VAC
115VAC
0 . 8 4
0 . 8 5
0 . 8 6
0 . 8 7
0 . 8 8
0 . 8 9
0 . 9
0 . 9 1
0 . 9 2
0 . 9 3
0 . 9 4
0 . 9 5
0 . 9 6
0 . 9 7
0 . 9 8
0 . 9 9
1
5 0 % 6 0 % 7 0 % 8 0 % 9 0 % 1 0 0 %
2 7 7 V A C
2 3 0 V A C
1 1 5 V A C
LPF-40seriespossesssuperiorworkingefficiencythatupto90%canbereachedinfieldapplications.
LOAD
EFFICIENCY (%)
EFFICIENCY vsLOAD(48VModel)
PF
LOAD
ConstantCurrentMode
TherearetwomajorkindsofLEDdrivemethod"directdrive"and"withLEDdriver".
TypicalLEDpowersupplyI-Vcurve
A typicalLEDpowersupplymayeitherworkin"constantvoltagemode(CV)orconstantcurrentmode(CC)"todrivetheLEDs.
Mean Well's LED power supply with CV+ CC characteristic can be operated at both CV mode (with LED driver, at area (A) and CC mode (direct drive, at area (B).
DRIVINGMETHODSOFLEDMODULE
Vo(%)
100
60
50 95
(max.)
Io (%)
Constant
Voltage area
Constant
Current area
Hiccup
Protection
(A)
(B)
(C)
(40W)
PowerFactorCharacteristic
40WSingleOutputSwitchingPowerSupply
LP F -40 ser ies
FileName:LPF-40-SPEC 2012-03-20
