NPF-120 Datasheet, PDF (4/5 Pages) Mean Well Enterprises Co., Ltd. – 120W Single Output Switching Power Supply

120W Single Output Switching Power Supply
NPF-120 series
EFFICIENCY vs LOAD (48V Model)
NPF-120 series possess superior working efficiency that up to 90% can be reached in field applications.
92
91
90
89
88
87
86
85
84
83
82
81
80
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
277V
230V
115V
LOAD
DRIVING METHODS OF LED MODULE
There are two major kinds of LED drive method, "direct drive" and "with LED driver".
A typical LED power supply may either work in "constant voltage mode (CV)" or "constant current mode (CC)" to drive the LEDs.
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).
100
60
(min.)
(A) Constant
Voltage area
(B)
Constant
Current area
In the constant current region, the highest voltage at the output of the driver
depends on the configuration of the end systems.
Should there be any compatibility issues, please contact MEAN WELL.
(C)
Hiccup
Protection
50
100
Io (%)
Typical LED power supply I-V curve
File Name:NPF-120-SPEC 2015-06-02