GSC25 Commercial/GSM25 Medical

25 Watt 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)

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.

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.

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.

GLOBAL PERFORMANCE SWITCHERS

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:

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

Normal

Fault

Test

Test

Leakage

Leakage

Voltage

Method

GSM25

50 μA

78 μA

132 Vca/60 Hz

UL2601-1

GSM25

94 μA

150 μA

264 Vca/50 Hz

IEC60601-1

SPECIFICATIONS

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marked to LVD

D C P o w e r S u p p l i e s