QUALSTAR CORPORATION
www.n2power.com
Tel: 805-583-7744
280W AC-DC
3” x 5.3” footprint
Up to 90% efficiency
High power density: over 13W / cu in.
All outputs may be paralleled
Remote on/off
5V standby output (1A)
12V aux output (1A)
Universal AC input
Active PFC (90 – 264VAC)
Active current sharing for N, N+1
Active inrush current protection
RoHS compliant
POE compliant (54V and 56V models)
Power Supply Design Leader
N2Power leads the power density race with
efficiency XL280 Series AC -DC power
supplies. Our
advanced technology yields a very
small footprint,
reduces wasted power, and
offers the highest power
density in its class. This
efficient design means
reduced energy
costs, a greater return on your
investment,
greater reliability and longer product life.
Unmatched Power Density
With an overall height of 1.43" and a 3" x 5.3"
footprint, the XL280 Series boasts a power
over 13 watts per cubic inch. It is
ideally suited for
OEMs using the industry
standard 1U chassis.
High Efficiency in a Small Package
The XL280 Series provides up to 90%
efficiency.
Our unique design reduces energy
consumption and
generates less wasted heat. I
t requires little forced
air cooling, decreases
AC power consumption,
increases reliability
and economy of operation.
Comparisons
of efficiencies show that our supplies
can reduce losses up to 50%.
N2POWER XL280 AC
ULTRA SMALL, HIGH-
EFFICIENC
NASDAQ: QBAK
N2Power leads the power density race with
its high
supplies. Our
small footprint,
offers the highest power
efficient design means
costs, a greater return on your
greater reliability and longer product life.
With an overall height of 1.43" and a 3" x 5.3"
footprint, the XL280 Series boasts a power
density
ideally suited for
standard 1U chassis.
efficiency.
consumption and
t requires little forced
AC power consumption,
and economy of operation.
of efficiencies show that our supplies
Complete Protection
The main output is
enabled whenever all
startup conditions are met,
and is shut down upon command,
loss of
input power or whenever excessive loads
temperatures are sensed. When AC
provides the host
system with advanced warning of an
impending shutdown.
Typical Mechanical Drawing:
Inches (millimeters), refer to XL280 Product Specification for complete information.
AC-DC SERIES
EFFICIENC
Y POWER SUPPLY
Rev: 07-14-17
enabled whenever all
of the required
and is shut down upon command,
input power or whenever excessive loads
or
temperatures are sensed. When AC
input power is lost it
system with advanced warning of an
Inches (millimeters), refer to XL280 Product Specification for complete information.
QUALSTAR CORPORATION
www.n2power.com
Tel: 805-583-7744
MODEL PART
NUMBER OUTPUT
VOLTAGE
XL280-12
XL280-12
CS
400082-01-2
400081-01-4
V1
12
V2
12
V3
12
V4
5sb
XL280-24
XL280-24
CS
400082-02-0
400081-02-2
V1
24
V2
12
V3
12
V4
5sb
XL280-48
XL280-48
CS
400082-03-4
400081-03-0
V1
48
V2
12
V3
12
V4
5sb
XL280-54
XL280-54
CS
400082-04-6
400081-04-8
V1
54
V2
12
V3
12
V4
5sb
XL280-56
XL280-56
CS
400082-05-3
400081-05-5
V1
56
V2
12
V3
12
V4
5sb
Compliance:
USA/ Canada:
Europe:
Safety: Underwriters Laboratories: UL
60950-1:2007 (2nd Edition) /
C22.2 No. 60950-1-07 Safety
of Information Technology
Equipment (ITE)
2006/95/EC -
“Low Voltage (Safety)
Directive”
Demko: EN 60950-
1:2006+A11:2009
(2nd Edition)
EMC: FCC part 15, subpart B
2004/108/EC “Electromagnetic
Compatibility (EMC) Directive”
EN 61204-3 Class B
Every effort has been made to keep the information contained in this document current
and accurate as
of the date of publication or revision. However, no
or implied that the document is error-
free or that it is accurate with
specification. N2Power reserves the right to change
specifications without notice.
N2POWER XL280 AC
ULTRA SMALL, HIGH-
EFFICIENC
NASDAQ: QBAK
REGULATION
(%) MAXIMUM
CURRENT (A)
RIPPLE &
NOISE (P-P)
±3
23.3
120 mV
±5
5.0
120 mV
±5
1.0
120 mV
±5
1.0
50 mV
±3
11.7
240 mV
±5
5.0
120 mV
±5
1.0
120 mV
±5
1.0
50 mV
±3
5.8
480 mV
±5
5.0
120 mV
±5
1.0
120 mV
±5
1.0
50 mV
±3
5.2
540 mV
±5
5.0
120 mV
±5
1.0
120 mV
±5
1.0
50 mV
±3
5.0
560 mV
±5
5.0
120 mV
±5
1.0
120 mV
±5
1.0
50 mV
International:
“Low Voltage (Safety)
1:2006+A11:2009
IEC 60950-1:2005 (2nd Edition)
Safety of Information Technology
Equipment
2004/108/EC “Electromagnetic
Compatibility (EMC) Directive”
IEC 61204-3 Class B
INPUT SPECIFICATIONS
Nominal Input Voltage:
Tested Input Limits:
Input Frequency Range:
Input Current:
Safety Isolation:
Inrush Current:
Leakage Current:
Power Factor
Correction:
OUTPUT SPECIFICATIONS
Total Output:
Output Voltages:
Hold-up Time:
Efficiency:
Minimum Load:
Over / Under Shoot:
Output Isolation
PROTECTION
Input Protection:
Overvoltage Protection:
Overpower Protection:
Short Circuit Protection:
Thermal Shutdown:
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature:
Temperature Derating:
Storage
Temperature:
Forced Air Cooling:
Convection Cooling:
MTBF:
SIGNALS
Remote Sense
Current Sharing
Passive Redundancy
Power Good (PG)
Output
Remote Enable
Input
contained in this document current
of the date of publication or revision. However, no
guarantee is given
free or that it is accurate with
regard to any
specifications without notice.
Qualstar and the Qualstar logo are registered
N2Power
and the N2Power logo are trademarks of Qualstar
trademarks are the property
of their respective owners.
Copyright © 2017
• Qualstar Corporation.
All rights reserved. Printed in USA.
AC-DC SERIES
EFFICIENC
Y POWER SUPPLY
Rev: 07-14-17
INPUT SPECIFICATIONS
Nominal Input Voltage:
100 – 240 VAC
Tested Input Limits:
90 – 264 VAC
Input Frequency Range:
47 – 63 Hz
3.5 A @ 100 VAC
3000 VAC in to out
1500 VAC in to ground
14 A @ 240 VAC
Leakage Current:
0.75 mA @240 VAC/60Hz
Active PFC circuitry, meets
or exceeds EN61000-3-2
OUTPUT SPECIFICATIONS
280 W
12 to 56 V
Minimum 22 ms
Up to 90%
No load
Over / Under Shoot:
Max 10% at turn-on
For POE
5 A fuse
Overvoltage Protection:
V1 (latches off)
Overpower Protection:
Auto-recovery
Short Circuit Protection:
Auto recovery
Thermal Shutdown:
Auto recovery
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature:
–25 to +50˚C
Temperature Derating:
2.5% / degree
50˚C to 70˚C
Temperature:
– 40 to +85˚C
Forced Air Cooling:
10 CFM minimum
Convection Cooling:
See Specification
546,464 hours @ 25˚C
V1 and Return
V1 using active circuitry
Passive Redundancy
V2 and V3 outputs may
be wire OR-ed
Power Good (PG)
High-true CMOS logic
Input
Low-true input enables
V1, V2, V3 output
registered trademarks of Qualstar Corporation.
and the N2Power logo are trademarks of Qualstar
Corporation. All other
of their respective owners.
• Qualstar Corporation.