General Specifications
V
= 48V , T @25 °C, 300 LFM airflow, V
= 3.3V, I
= Full Load unless otherwise noted.
OUT
IN
DC
A
OUT
Available output power depends on ambient temperature and good thermal management. (See application graphs for limits.)
Input Characteristics
Parameter
Min
Typ
Max
75
Units
Operating Input Voltage
36
48
V
DC
Input Current (Model Dependent)
Input Capacitance
6.5
A
4.4
2
µF
Input Hysteresis, Low Line
Output Characteristics
V
DC
Regulation Over Line, Load & Temperature
98
102
15
%V
mV
mV
NOM
RMS
P–P
Voltage Ripple
Voltage Ripple, 20MHz BW
Current Range
50
0
40
A
Current Limit Inception
41
48
A
A
Short Circuit Current, Peak (see Note below)
Output Transient Response, 50% to 75% load change, 1A/µsec
Settling Time to ±1%
50
125
300
30
mV
µS
mS
Turn-on Time to 98% Vnom
Output Overshoot at Turn-on
Trim Range
1
%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*
117
°C
Switching Frequency, Fixed
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
10% to 95% RH,
Non-condensing
2 to 9Hz, 3mm disp.,
9 to 200Hz 1g
UL V-0
UL and c-UL Recognized Component,
TUV, UL60950, CSA 22.2 No. 950,
IEC/EN60950**
EMC Characteristics:
Vibration
Designed to meet emission and immunity
requirements per EN55022, CISPR22,
Class B and CISPR24.
Material Flammability
Weight
55 grams
** An external fuse shall be used to comply with the requirements.
MTBF
Telcordia (Bellcore)
1,600,000 hours
Taurus Series, Page 2
WWW.GALAXYPWR.COM
Part No. 99–001 Rev. 5.0–090803
GALAXY [ GALAXY POWER, INC. ]
