OSRAM Constant Current DALI 20W LED Driver
The OSRAM Constant Current DALI LED Driver IT DALI 20/220-240/500 CS is an industrial-grade, 21W constant current indoor LED driver engineered for smart commercial and architectural lighting in Malaysia. It features selectable multi-current outputs ranging from 150mA to 500mA (default 500mA) with a forward voltage of 15V to 42V DC. Built to support modern lighting automation, it seamlessly integrates with DALI-2, TouchDIM, and Corridor Function systems, offering smooth analog dimming from 1% to 100%. Designed with SELV galvanic isolation, a high power factor (λ=1), low Total Harmonic Distortion (<10%), and full protection against overload, short-circuit, and over-temperature, this driver delivers up to 50,000 hours of operating life at t c =80°C.
| Category |
Item |
Value |
Unit |
Remarks |
| INPUT |
Nominal Voltage |
220 - 240 |
V |
|
| |
Nominal frequency |
0 / 50 / 60 |
Hz |
|
| |
AC voltage range |
198 – 264 |
V |
|
| |
DC voltage range |
176 – 276 |
V |
|
| |
Maximum voltage |
275 |
VAC |
48hrs maximum |
| |
AC Nominal current |
0 |
A |
Full load, 230V, 50Hz |
| |
DC Nominal current |
0 |
A |
50% load, 230V, 0Hz |
| |
Total Harmonic Distortion (THD) |
< 10 |
% |
Full load, 230 V, 50 Hz / see graphs |
| |
Power factor |
1 |
|
Full load, 230 V, 50 Hz / see graphs |
| |
Efficiency |
87 |
% |
Full load, 230 V, 50 Hz, typical / see graphs |
| |
Power losses |
3 |
W |
Maximum, full load |
| |
No-load power |
n/a |
W |
Load switching on output side is not permitted |
| |
Network stand-by power |
< 0.5 |
W |
|
| |
Protection class |
II |
|
Suitable for class I & II luminaires |
| |
Leakage current |
< 0.7 |
mA |
Output floating |
| |
Inrush current |
20 |
A pk |
twidth = 100µs typical (measured at 50% Ipeak) |
| |
Max. units per circuit breaker |
B10: 34; C10: 51B16: 55; C16: 82B25: 85; C25: 128 |
pcs |
|
| OUTPUT |
Nominal voltage range |
15 – 42 |
V |
|
| |
Maximum voltage |
≤ 60 |
V |
Open circuit |
| |
Nominal current range |
150/200/250/300/350/400/450/500 |
mA |
Default current: 500mA |
| |
Current accuracy |
+/- 5 |
% |
|
| |
Current ripple |
< 5 |
% |
Ripple / average @ 100 Hz |
| |
Pst LM |
≤ 1 |
|
Full load |
| |
SVM |
≤ 0.4 |
|
Full load |
| |
Nominal power range |
2.3 – 21.0 |
W |
Partial Load. |
| |
Maximum power |
21 |
W |
Ta ≤ Max. |
| |
Emergency output factor (EL) |
0.15 – 0.5 |
|
EOFI = 0.15 - 0.5, @Ta=80 °C No hazard |
| |
Galvanic isolation |
SELV |
|
3,75 kVrms. Output to mains - Touch current < 0.7 mA |
| DIM |
Dimming control |
Yes |
|
DALI-2/TouchDIM/Corridor Function |
| |
Dimming range |
1 - 100 |
% |
@ Maximum nominal output current. |
| |
Dimming technique |
Analog dimming |
|
|
| |
PWM frequency |
n/a |
Hz |
|
| |
Galvanic isolation DALI/mains |
Basic |
|
|
| |
Galvanic isolation DALI/output |
SELV |
|
|
| |
TouchDIM |
Yes |
|
|
| ENVIRONMENT |
Ambient temperature range ta |
-20…+50 |
°C |
|
| |
Maximum case temperature tc |
80 |
°C |
|
| |
Max. case temp. in fault condition |
110 |
°C |
|
| |
Storage temperature range |
-25…+85 |
°C |
|
| |
Relative humidity |
5…85 |
% |
Not condensing |
| |
Surge transient protection |
1 |
kV |
L/N |
| |
Environmental rating |
Indoor |
|
|
| |
IP rating |
IP 20 |
|
|
| |
Mains switching cycles |
> 100'000 |
|
|
| |
Expected lifetime |
50,000 |
hrs |
@tcmax = 80°C, 10% failure rate |
| PROTECTIONS |
Over temperature |
Yes |
|
|
| |
Overload |
Yes |
|
Automatic, reversible |
| |
No load |
Yes |
|
Limitation of Output voltage ≤ 60V |
| |
Short-circuit |
Yes |
|
Automatic, reversible |
| |
Output overvoltage |
Yes |
|
Limitation of Output voltage ≤ 60V |
Q1: What is the OSRAM IT DALI 20/220-240/500 CS LED driver used for?
A: The OSRAM IT DALI 20/220-240/500 CS is a 21W constant current LED driver used for indoor architectural, commercial, and office LED luminaires requiring smart digital dimming via DALI-2, TouchDIM, or Corridor Function protocols.
Q2: What output current options does the OSRAM IT DALI 20 driver support?
A: The driver offers selectable output currents of 150mA, 200mA, 250mA, 300mA, 350mA, 400mA, 450mA, and 500mA, with a default setting of 500mA.
Q3: Where can I buy genuine OSRAM DALI LED drivers in Malaysia?
A: Genuine OSRAM DALI LED drivers are available in Malaysia through authorized commercial lighting suppliers, industrial electrical distributors, and specialized B2B lighting solution companies servicing Selangor, Kuala Lumpur, and nationwide projects. You may visit www.esllighting.com.my for more information.
Q4: Can this OSRAM DALI driver be used with DC emergency lighting power supply?
A: Yes, the OSRAM IT DALI 20 driver supports a DC voltage input range of 176V to 276V with an Emergency Output Factor (EOFI) of 0.15 to 0.5, making it suitable for central battery emergency lighting systems.
Q5: Is the OSRAM IT DALI 20 driver SELV rated?
A: Yes, it features SELV (Safety Extra Low Voltage) galvanic isolation between input mains/DALI control circuits and the output terminal, tested up to $3.75\text{ kV}_{\text{rms}}$.
Q6: How many OSRAM IT DALI 20 drivers can be installed on a B16 circuit breaker?
A: Up to 55 units of OSRAM IT DALI 20 drivers can be connected on a standard B16 circuit breaker (or 82 units on a C16 breaker) based on its 20A peak inrush current rating.
Q7: What is the expected lifetime of the OSRAM IT DALI 20 LED driver?
A: The OSRAM IT DALI 20 driver has an expected operational lifetime of 50,000 hours at its maximum allowable case temperature ($t_c$) of $80^\circ\text$ with a low $10\%$ nominal failure rate.
Q8: What safety protections are built into the OSRAM IT DALI 20 CS driver?
A: The driver includes built-in protection against over-temperature, output overload (automatic reversible), short-circuit, no-load, and overvoltage (output capped at $\le 60\text$).
Q9: Does the OSRAM IT DALI 20 driver support TouchDIM without a DALI controller?
A: Yes, the driver natively supports TouchDIM technology, allowing users to dim and switch light fixtures using a standard momentary wall push-button without needing a dedicated DALI controller.
