TECHNICAL SPECIFICATIONS
(TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
NOTES and CONDITIONS
S48SP3R310 (Standard)
Min.
Typ.
Max.
Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
80
Vdc
Transient (100ms)
Operating Temperature
Storage Temperature
100ms
100
110
125
Vdc
°C
°C
Refer to Figure 20 for the measuring point
-40
-55
Input/Output Isolation Voltage
INPUT CHARACTERISTICS
Operating Input Voltage
2250
Vdc
36
75
Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
32.5
30.5
1.0
34
32
2
35.5
33.5
3.0
Vdc
Vdc
Vdc
A
100% Load, 36Vin
1.10
No-Load Input Current
40
10
mA
mA
A2s
mA
dB
Off Converter Input Current
Inrush Current (I2t)
0.01
Input Reflected-Ripple Current
Input Voltage Ripple Rejection
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Load
Over Line
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
10
60
Vin=48V, Io=Io.max, Tc=25°C
3.25
3.2
3.3
3.35
Vdc
Io=Io, min to Io, max
Vin=36V to 75V
Tc=-40°C to 100°C
±3
±3
±33
±10
±10
mV
mV
mV
V
Over load, line and temperature
5Hz to 20MHz bandwidth
Full Load, 1µF ceramic, 10µF tantalum
Full Load, 1µF ceramic, 10µF tantalum
3.4
30
10
60
20
10
mV
mV
A
RMS
Operating Output Current Range
Output DC Current-Limit Inception
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
Positive Step Change in Output Current
Negative Step Change in Output Current
Settling Time (within 1% Vout nominal)
Turn-On Transient
0
110
Output Voltage 10% Low
140
%
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
50% Io.max to 75% Io.max
100
100
50
mV
mV
us
75% Io.max to 50% Io.max
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Maximum Output Capacitance
EFFICIENCY
100% Load
60% Load
ISOLATION CHARACTERISTICS
Input to Output
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
15
15
ms
ms
µF
Full load; 5% overshoot of Vout at startup
5000
2250
90.0
89.0
%
%
Vdc
MΩ
pF
10
1000
400
kHz
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)
Logic High (Module Off)
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off)
Logic High (Module On)
ON/OFF Current (for both remote on/off logic)
Leakage Current (for both remote on/off logic)
Output Voltage Trim Range
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
Von/off
Von/off
-0.7
2
0.8
18
V
V
Von/off
Von/off
Ion/off at Von/off=0.0V
-0.7
2
0.8
18
V
V
mA
uA
%
0.25
Logic High, Von/off=15V
Across Trim Pin & +Vo or -Vo, Pout≦max rated
30
10%
4.62
-10%
3.8
Over full temp range; % of nominal Vout
V
Io=80% of Io, max; Ta=25°C; air flow 300LFM
Refer to Figure 20 for the measuring point
1.98
10.5
117
M hours
grams
°C
Weight
Over-Temperature Shutdown
DS_S48SP3R310_03062007
2
DELTA [ DELTA ELECTRONICS, INC. ]
