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

16WSingleOutputSwitchingPowerSupply

FileName:LPF-16-SPEC 2011-12-21

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-16seriespossesssuperiorworkingefficiencythatupto86%canbereachedinfieldapplications.

LOAD

EFFICIENCY vsLOAD(48VModel)

LOAD

ConstantCurrentMode

(16W)

PowerFactorCharacteristic

100

50

(max.)

50

95

Io(%)

(A)Constant

Voltagearea

(B)

Constant

Currentarea

(C)

Hiccup

Protection