HLG-240H-20A Mean Well, HLG-240H-20A Datasheet - Page 5
![Linear & Switching Power Supplies 240W 20V 12A 90-305VAC IP65 rated](/photos/17/97/179773/hlg240_sml.jpg)
HLG-240H-20A
Manufacturer Part Number
HLG-240H-20A
Description
Linear & Switching Power Supplies 240W 20V 12A 90-305VAC IP65 rated
Manufacturer
Mean Well
Datasheet
1.HLG-240H-12A.pdf
(6 pages)
Specifications of HLG-240H-20A
Product
Switching
Commercial/medical
Commercial
Output Power Rating
240 W
Input Voltage
90 VAC to 305 VAC, 127 VDC to 431 VDC
Number Of Outputs
1
Output Voltage (channel 1)
20 V
Output Current (channel 1)
12 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-240H
HLG-240H
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 H
File Name:HLG-240H-SPEC 2011-01-31
s e r i e s