General Specifications
V
= 48V
T @25°C, 300 LFM Airflow, V
=3.3V, I
OUT
= Full Load unless otherwise noted.
OUT
IN
DC,
A
Available output power depends on ambient temperature and good thermal management. (See application graphs for limits.)
Input Characteristics
Parameter
Min
Typ
Max
75
5
Units
Operating Input Voltage
Input Current (Model Dependent)
Input Capacitance
36
48
V
DC
A
4.5
2
µF
Input Hysteresis, Low Line
V
DC
Output Characteristics
Regulation Over Line, Load & Temperature
Voltage Ripple
98
102
20
150
30
37
41
5
%V
mV
NOM
RMS
Voltage Ripple, 20MHz BW
Current Range
mV
P–P
0
A
Current Limit Inception
31
A
A
Short Circuit Current, Peak (see Note below)
Output Transient Response, 50% to 75% load change, 1A/µsec
Settling Time to ±1%
%V
OUT
300
35
1
µS
Turn-on Time to 98%Vnom
Output Overshoot at Turn-on
Trim Range
mS
%V
OUT
OUT
OUT
90
110
%V
%V
Overvoltage Protection, Latching
130
200
Isolation
Isolation Test Voltage, Input/Output (Basic)
Isolation Resistance
2000
10
V
DC
MΩ
Features
Overtemperature Protection, Thermal Sensor, Latching*
Switching Frequency, Fixed
117
°C
kHz
Notes: During short circuit, converter will shut down and attempt to restart once per second. The average current during this
condition will be very low and the device can be safely left in this condition continuously. For specific output voltage
specifications, see the corresponding detailed data sheet.
*PCB less than 130°C
General Specifications
Approvals and Standards
Operating Temperature
Storage Temperature
Relative Humidity
-40°C to +100°C
-55°C to +125°C
UL and c-UL Recognized Component, TUV,
UL60950, CSA 22.2 No. 950, IEC/EN 60950**
EMC Characteristics:
10% to 95% RH,
Non-condensing
2 to 9Hz, 3mm disp.,
9 to 200Hz 1g
Designed to meet emission and immunity
requirements per EN55022, CISPR 22, Class B,
and CISPR 24.
Vibration
Material Flammability
Weight
UL V-0
35 grams
** An external fuse shall be used to comply with the
requirements.
MTBF
Telcordia (Bellcore)
1,600,000 hours
Pisces Series, Page 2
WWW.GALAXYPWR.COM
Part No. 99-002 Rev. 4.0–093003
GALAXY [ GALAXY POWER, INC. ]
