Embedded Power for
Business-Critical Continuity
Rev. 09.29.10
LQS Series
1 of 5
LQS Series
Quarter-Brick Series
Total Power: 200 Watts
Input Voltage: 36 V to 75 V
# of Outputs: 1
Electrical Specifications
Special Features
Input
Ultra high efficiency topology
24 V nominal 18 - 36 Vdc
Unprecedente d useable
Input voltage range:
48 V nominal 36 - 75 Vdc
output power levels
No load 85 mA to 150 mA
3)
High power density (200 W/in Input current:
Remote OFF 5 mA
open-frame technology
Logic compatibility Open collector ref to -input
Wide ambient temperature
Active high remote ON/OFF: ON Open circuit or > 2.4 Vdc
range, -40 C to +85 C
OFF < 0.4 Vdc
80% to 110% output trim
Power up 35.5 V (typ.)
Undervoltage lockout:
Monotonic start-up in normal
Power down 33.5 V (typ.)
and prebiased loads
Power up 10 ms (typ.)
Basic insulation system
Start-up time (See note 2):
Remote ON/OFF 10 ms (typ.)
Overvoltage and
overtemperature protection Output
Secondary side control, no
Voltage adjustability: 80% to 110%
optocouplers, fast transient
Minimum load: 0%
response
Overshoot
At turn-on and turn-off None
100 V, 100 ms input transient
None
rated Undershoot:
Available RoHS compliant
70 mV, typ. deviation
Transient response:
20 s recovery
(See note 1)
Safety
UL, cUL 60950-1 Ed 2
CSA C22.2 No 60950-1 Ed 2
VDE EN60950-1:2006 + A11:2009process
yellow
116
Embedded Power for
Business-Critical Continuity
1375
1797
Rev. 09.29.10
LQS Series
2 of 5
375
Electrical Specifications continued
3405
EMC Characteristics
Immunity:
ESD air enclosure: EN61000-4-2 8 kV/6 kV (O/P within spec.)
Radiated field enclosure: EN61000-4-3 10 V/m (O/P within spec.)
313
Conducted: EN61000-4-6 10 V (O/P within spec.)
Input transients: 100 V, 100 ms
General Characteristics
Basic insulation: Input/output 2250 Vdc
2985
Switching frequency: Fixed 480 kHz
Approvals and standards: (See Note 3) EN60950-1 VDE, UL/cUL 60950-1
Material flammability: UL94V-0
240
Weight: 37g (1.30 oz)
MTBF: Telcordia Tech SR-332 3,866,933 hours
Environmental Specifications
Thermal performance: Operating ambient temperature -40 C to +85 C
242 Non-operating -55 C to +125 C
Protection
Short-circuit Continuous
Overvoltage Non-latching
Thermal 125 C hot spot temperature with automatic recovery
2607
652