GSC25 Commercial/GSM25 Medical
25 Watt Global Performance SWitcherS
GLOBAL PERFORMANCE SWITCHERS
Features:
D C P o w e r S u p p l i e s
• 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
SPECIFICATIONS
Ac Input
Inrush Current
90-264 Vac, 47-63 Hz single phase.
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.
Input Current
Maximum input current at minimum 120 Vac, 60 Hz with full rated output
load is 0.6 A.
Temperature Coefficient
0.03%/°C typical on all outputs.
Hold-up Time
Environmental
15 ms minimum from loss of ac input at full load, nominal line (120 Vac).
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.
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.
EMI/EMC Compliance
All models include built-in EMI filtering to meet the following emissions require-
ments:
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.
EMI SPECIFICATIONS
COMPLIANCE LEVEL
Conducted Emissions GSC25
Conducted Emissions GSM25
Static Discharge
RF Field Susceptibility
Fast Transients/Bursts
Surge Susceptibility
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.
Overload Protection
Fully protected against short circuit and output overload. Short circuit protec-
tion is cycling type power limit
Commercial Safety:
Output Noise
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.
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
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:
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%.
Model
Normal
Fault
Test
Test
Leakage
Leakage
Voltage
Method
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.
GSM25
GSM25
50 μA
94 μA
78 μA
132 Vca/60 Hz
264 Vca/50 Hz
UL2601-1
150 μA
IEC60601-1
Voltage Adjustment
Factory set with fixed resistors to maximize reliability.
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.
Efficiency
70% minimum at full rated load, nominal input voltage.
Input Protection
Internal ac fuse provided on all units.
All specifications are typical at nominal input, full load at 25OC unless otherwise stated
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