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%
230V
115V
LOAD
EFFICIENCY (%)
OWA-120U series possess superior working efficiency that up to 90.5% can be reached in field applications.
EFFICIENCY vs LOAD (48V Model)
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).
Typical LED power supply I-V curve
Vo(%)
100
60
50 100
(min.)
Io (%)
Constant
Current area
Hiccup
Protection
Constant
Voltage area
(A)
(B)
(C)
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.
120W Single Output MoistureproofAdaptor
OWA-120U series
File Name:OWA-120U-SPEC 2017-08-04
