GSC20 Commercial

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 (115 Vac).

Output Power

Normal continuous output power is 20 W, 24 W peak for 60 s maximum

duration, 10% duty cycle. Factory set to begin power limiting at approxi-

mately 28 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 is

required to maintain proper regulation.

Overload Protection

Fully protected against short circuit and output overload. Short circuit pro-

tection 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

maximum load, ∆l/∆t <0.2 A/μs Maximum voltage deviation is 3.5%. Startup/

shutdown 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.

Turn-on time

Less than 1 second at 115 Vac, 25o C (inversely proportionate to input voltage

and thermistor temperature.

20 WATT GLOBAL PERFORMANCE SWITCHERS

• Industry’s smallest 20 W switcher

• Business-card size (2.0 x 3.5 x 0.71”)

• Approved to UL60950, CSA-C22.2 No. 60950,

EN60950, IEC60950 with CB Certificate

• EMI FCC Class B, CISPR22B

• Overvoltage protection standard

• RoHS compliant models available (G suffix)

GLOBAL PERFORMANCE SWITCHERS

Summary:

SPECIFICATIONS

•

marked to LVD

Efficiency

70% minimum at full rated load, nominal input voltage. Efficiency increases as

output voltage increases.

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 above 50°C. See Environmental Specifica-

tions on next page.

EMI/EMC Compliance

All models include built-in EMI filtering to meet the following emissions require-

ments:

EMI SPECIFICATIONS

COMPLIANCE LEVEL

Conducted Emissions

Static Discharge

RF Field Susceptibility

Fast Transients/Bursts

Surge Susceptibility

EN55022 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 kH

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 UL60950, CSA-C22.2 No. 60950, EN60950, IEC60950 with CB Certificate.