GSC25 Commercial/GSM25 Medical
25 Watt Global Performance SWitcherS
GLOBAL PERFORMANCE SWITCHERS
Features:
• Industry’s smallest 25 W switcher
• 2.50 x 4.25 x 0.86”
• Conducted EMI exceeds FCC Class B and
CISPR 22 Class B (Commercial models) and
CISPR 11 Class B (Medical models)
• Overvoltage protection standard
• Commercial Approved to UL1950,
CSA-C22.2 No.950, EN60950
• Medical Approved to UL2601-1, IEC60601-1
EN60601-1 and CSA-C22.2 No. 601-1
• RoHS Compliant (G suffix)
•
marked to LVD
DC Power Supplies
SPECIFICATIONS
Ac Input
90-264 Vac, 47-63 Hz single phase.
Input Current
Maximum input current at minimum 120 Vac, 60 Hz with full rated output
load is 0.6 A.
Hold-up Time
15 ms minimum from loss of ac input at full load, nominal line (120 Vac).
Output Power
Normal continuous output power is 25 W, 28 W peak for 60 sec. maximum
duration, 10% duty cycle. Factory set to begin power limiting at approxi-
mately 30 W.
Output Regulation
Regulation from initial setpoint measured by changing load from 5% load to
50% load or 50% load to full load in either direction. Initial setpoint tolerance
is measured at 50% load. A minimum load of 5% of the output current on the
+5.1 V output (125 mA) is required to maintain proper regulation.
Overload Protection
Fully protected against short circuit and output overload. Short circuit protec-
tion is cycling type power limit
Output Noise
0.5% rms, 1% pk-pk, 20 MHz bandwidth, differential mode. Measured with
scope probe directly across output terminals of the power supply with load
terminated with 0.1 uF capacitor.
Transient Response
Main output: 750 μs typical response time for return to within 0.5% of final
value for a 50% load step within the regulation limits of minimum and maxi-
mum load, ∆l/∆t <0.2 A/μs. Maximum voltage deviation is 3.5%. Startup/shut-
down overshoot less than 2%.
Overvoltage Protection
Built in with firing point set per ratings table. OVP firing reduces voltage to
less than 50% of nominal voltage in 50 ms.
Voltage Adjustment
Factory set with fixed resistors to maximize reliability.
Efficiency
70% minimum at full rated load, nominal input voltage.
Input Protection
Internal ac fuse provided on all units.
Inrush Current
Inrush is limited by internal thermistor. The inrush at 230 Vac, averaged over the
first ac half-cycle under cold start conditions will not exceed 32 A.
Temperature Coefficient
0.03%/°C typical on all outputs.
Environmental
Designed for 0 to 50°C operation at full rated output power; derate output current
and total output power by 2.5% per °C between 50 - 70°C. See Environmental and
Packaging Specifications on next page.
EMI/EMC Compliance
All models include built-in EMI filtering to meet the following emissions require-
ments:
EMI SPECIFICATIONS
Conducted Emissions GSC25
Conducted Emissions GSM25
Static Discharge
RF Field Susceptibility
Fast Transients/Bursts
Surge Susceptibility
COMPLIANCE LEVEL
EN55022 Class B; FCC Class B
EN55011 Class B; FCC Class B
EN61000-4-2, 6 kV contact, 8 kV air
EN61000-4-3, 3 V/meter
EN61000-4-4, 2 kV, 5 kHz
EN61000-4-5, 1 kV diff., 2 kV com.
Commercial Safety:
Condor D.C. Power Supplies, Inc. declares under our sole responsibility that all GSC
models are in conformity with the applicable requirements of EN60950 following
the provisions of the Low Voltage Directive 73/23/EEC. All GSC models are ap-
proved to UL1950, CSA-C22.2 No.950, EN60950.
GSM25 Medical Model Earth Leakage Current
Leakage current measured in the Gnd wire connection when measured per
UL2601-1 or IEC60601-1 is as follows:
Model
GSM25
GSM25
Normal
Leakage
50 μA
94 μA
Fault
Leakage
78 μA
150 μA
Test
Voltage
132 Vca/60 Hz
264 Vca/50 Hz
Test
Method
UL2601-1
IEC60601-1
Medical Safety
Condor D.C. Power Supplies, Inc. declares under our sole responsibility that all
GSM models are in conformity with the applicable requirements of UL2601-1
Patient Care Equipment, CSA-C22.2 No.601.1, IEC60601-1, EN 60601-1.
All specifications are typical at nominal input, full load at 25
O
C unless otherwise stated
Commercial
Model
GSC25A
Medical
Model
GSM25A
Output No.
1
2
3
Output
+ 5.1 V
+12 V
- 12 V
+5V
+15 V
- 15 V
+5.1 V
+24 V
-12 V
Current
2.5 A
1.5 A
0.2 A
2.5 A
1.5 A
0.2 A
2.5 A
1.0 A
0.2 A
Load
Regulation
1%
4%
1%
1%
4%
1%
1%
4%
1%
Initial Setpoint
Tolerance
1%
3%
4%
1%
3%
4%
1%
3%
4%
OVP
Setting
6.2 ± 0.6 V
Ripple and
Noise
1%
1%
1%
Notes
A
A
B
A
A
B
A
A
B
GSC25B
GSM25B
1
2
3
6.2 ± 0.6 V
1%
1%
1%
GSC25D
GSM25D
1
2
3
6.2 ± 0.6 V
1%
1%
1%
A. To maintain proper regulation on output 2, +5.1 V current must be at least 1⁄4 and not greater than 5 times V2 current. V1 must be adjusted within 1% of 5.1 V
to maintain full load regulation on V2.
B. Thermal foldback type current limit
C. Add “G” suffix to model number for RoHS compliant model.
GSC25/GSM25 MECHANICAL SPECIFICATIONS
ENVIRONMENTAL SPECIFICATIONS
Temperature (A)
Humidity (A)
Shock (B)
Altitude
Vibration (C)
OPERATING
See individual specs.
0 to 95% RH
20 g
pk
-500 to 10,000 ft
1.5 g
rms’
0.003 g
2
/Hz
NON-OPERATING
-40 to +85°C
0 to 95% RH
40 g
pk
-500 to 40,000 ft
5 g
rms’
0.026 g
2
/Hz
A. Units should be allowed to warm up/operate under
non-condensing conditions before application of power.
B. Shock testing—half-sinusoidal, 10 ± 3 ms duration, ± direction,
3 orthogonal axes, total 6 shocks.
C. Random vibration—10 to 2000Hz, 6dB/octave roll-off from 350
to 2000Hz, 3 orthogonal axes. Tested for 10 min./axis operating and
1 hr./axis non-operating.
SL Power Electronics Corp. 6050 King Drive, Bldg. A, Ventura, CA 93003, USA. Phone:(805) 486 4565 Fax:(805) 487 8911 Email: info@slpower.com Rev. 4/22/08.
Data Sheet © 2008 SL Power Electronics Corp. The information and specifications contained in this data sheet are believed to be correct at time of publication.
However, SL Power Electronics accepts no responsibility for consequences arising from reproduction errors or inaccuracies. Specifications are subject to change without
notice.
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