HLG-240-54A Mean Well, HLG-240-54A Datasheet - Page 5

• Manufacturer Part Number: HLG-240-54A
• Description: Linear & Switching Power Supplies 240.3W 54V 4.45A 90-264VAC IP65 rated
• Manufacturer: Mean Well

Specifications of HLG-240-54A

• Product: Switching
• Commercial/medical: Commercial
• Output Power Rating: 240 W
• Input Voltage: 90 VAC to 264 VAC, 127 VDC to 373 VDC
• Number Of Outputs: 1
• Output Voltage (channel 1): 54 V
• Output Current (channel 1): 4.45 A
• Mounting Style: Panel
• Dimensions: 244.2 mm L x 68 mm W x 38.8 mm H
• Open Frame/enclosed: Enclosed
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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).
DRIVING METHODS OF LED MODULE
(max.)
100
Direct driving :
Under direct driving, the power supply will work in "constant current mode (CC)" and output voltage of the power supply will be clamped by sum of
forward voltage (V ) of the LED strip.
The total forward voltage of series connecting LEDs is suggested for 75%~95% of power supply rated output voltage due to concern of the best PF
value and efficiency.
With LED driver
Using additional driver, the power supply will work in "constant voltage mode (CV)" and output voltage of the power supply will be kept in rated value.
In this drive mode, several design issues need to be considered:
1.Output voltage of PSU must be higher than total forward voltage of series connecting LEDs by 3V minimum.
2.Input capacitor (Cin) of LED driver circuit should use 2.2uF ~ 22uF(typ.) of rating depends on the operating frequency of the LED driver.
50
source
source
The higher the operating frequency is used, the smaller value of Cin should be chosen, and vice versa.
AC
AC
Typical LED power supply I-V curve
(A)
240W Single Output Switching Power Supply
Voltage area
Constant
F
50
I/P
I/P
HLG-240
HLG-240
95
Protection
Hiccup
(C)
Current area
Constant
(B)
Io (%)
O/P
O/P
Cin
R
IC Circuit
L
Cout
V
F
H L G - 2 4 0
File Name:HLG-240-SPEC 2011-01-31
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