78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

277VAC

230VAC

115VAC

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

LOAD

ConstantCurrentMode

LPF-90Dseriespossesssuperiorworkingefficiencythatupto90.5%canbereachedinfieldapplications.

LOAD

EFFICIENCY vsLOAD(48VModel)

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

100

60

50

95

(max.)

Io (%)

Constant

Voltage area

Constant

Current area

Hiccup

Protection

(A)

(B)

(C)

(90W)

90WSingleOutputSwitchingPowerSupply

FileName:LPF-90D-SPEC2011-07-27

PowerFactorCharacteristic