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PDF LQS50A48-1V5AJ Data sheet ( Hoja de datos )
| Número de pieza | LQS50A48-1V5AJ | |
| Descripción | DC-DC / Industry Standard Isolated Quarter Brick | |
| Fabricantes | Emerson | |
| Logotipo |  |
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Quarter-Brick Series
Dual output
DC/DC CONVERTERS High Current, High Efficiency, Low Profile
• Two independent outputs
• High full load efficiency
• Wide ambient temperature range of -40 ºC to +85 ºC
• Up to 100% load imbalance
• Tracking, monotonic start-up
• Starts into pre-biased outputs
• Basic insulation system
• Over-voltage and over-temperature protection
• 100 V, 100 ms input voltage transient response
• Secondary side control, no optocouplers,
fast transient load response
• Available RoHS compliant
These are new high efficiency, open-frame, isolated 40 A converters in an industry standard dual
quarter-brick footprint. These converters deliver high output current at low voltages, and excel-
lent useable power density for today’s high end applications. This series features an input volt-
age range of 36 Vdc to 75 Vdc and output voltages of 1.2 V/3.3 V, 1.5 V/3.3 V, 1.8 V/3.3 V 2.5
V/3.3 V, and 5 V/3.3 V. The output voltage on each model is adjustable from 90% to 110% of
the nominal value. Typical efficiencies are 90%. This series also has a remote ON/OFF capabili-
ty. Over-current and over-voltage protection features are included as standard. Designed to
meet international safety agency approvals, including EN60950-1 and UL/cUL60950, this series
reduces compliance costs and time to market.
All specifications are typical at nominal input, full load at 25 °C ambient unless otherwise stated
1
NEW Product
Patent No. 6,765,810
Other Patents Pending
2 YEAR WARRANTY
SPECIFICATIONS
OUTPUT SPECIFICATIONS
Voltage adjustability
Both outputs
Minimum load
Both outputs
Ripple and noise
20 MHz bandwidth
Short circuit protection
Turn-on characteristics Both outputs
±10% min.
0%
50 mV pk-pk max.
15 mV rms max.
Both outputs
Monotonic
INPUT SPECIFICATIONS
Input voltage range
48 V nominal
36-75 Vdc
Input current
No load
Remote OFF
80 mA max.
6 mA max.
Active high remote ON/OFF
Logic compatibility
ON
OFF
Open collector ref to -input
Open circuit or >2.4 Vdc
<0.4 Vdc
Undervoltage lockout
Power up
Power down
35.5 V (typ.)
33.5 V (typ.)
Start-up time
Power up
Remote ON/OFF
14 ms (typ.)
14 ms (typ.)
International Safety Standard Approvals
UL/cUL CAN/CSA 22.2 No. 60950-00 : UL 60950
File No. E135734/60950
VDE Certificate No. 10401-3336-0197
EMC CHARACTERISTICS
Immunity:
ESD air enclosure
Radiated field enclosure
Conducted
Input transients
EN61000-4-2 8 kV/6 kV(O/P within spec.)
EN61000-4-3 10 V/m (O/P within spec.)
EN61000-4-6 10 V (O/P within spec.)
100 V, 100 ms
GENERAL SPECIFICATIONS
Efficiency
See table
Basic insulation
Input/output
2250 Vdc
Switching frequency
Fixed
480 kHz
Approvals and
standards
(See Notes 1 and 2) EN60950-1 VDE
UL/cUL 60950
Material flammability
UL94V-0
Weight
34 g (1.2 oz)
MTBF
Telcordia Tech SR-332 2,883,816 hours
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating ambient., -40 °C to +85 °C
temperature
Non-operating
-55 °C to +125 °C
PROTECTION
Short-circuit
Overvoltage
Thermal
Continuous
Non-latching
125 ºC hot spot temperature with
automatic recovery
File Name: quarter_brick_dual.pdf Rev (01): 29 Mar 2006
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