Table of Contents
Advertisement
TECHNICAL SPECIFICATIONS
(T
=25°C, airflow rate=300 LFM, V
A
PARAMETER
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient (100ms)
Operating Temperature
Storage Temperature
Input/Output Isolation Voltage
INPUT CHARACTERISTICS
Operating Input Voltage
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current
Off Converter Input Current
2
Inrush Current(I
t)
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
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 to 1% of Final value
Turn-On Transient
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Maximum Output Capacitance
EFFICIENCY
100% Load
ISOLATION CHARACTERISTICS
Isolation Voltage
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control, (Logic Low-Module ON)
Logic Low
Logic High
ON/OFF Current
Leakage Current
Output Voltage Trim Range
Output Over-Voltage Protection(Hiccup)
GENERAL SPECIFICATIONS
MTBF
Weight
Over-Temperature Shutdown
DS_S48SA1R812_06012006
=48Vdc, nominal Vout unless otherwise noted.)
in
NOTES and CONDITIONS
Refer to Figure 18 for measuring point
P-P thru 12µH inductor, 5Hz to 20MHz
Vin=48V, Io=50%Io.max, Ta=25℃
Over sample load, line and temperature
Full Load, 1µF ceramic, 10µF tantalum
Full Load, 1µF ceramic, 10µF tantalum
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
Full load; 5% overshoot of Vout at startup
Across Trim Pin & +Vo or –Vo, Pout≦max rated
Over full temp range; % of nominal Vout
Io=80% of Io, max; Tc=40°C
Refer to Figure 18 for measuring point
100ms
1 minute
100% Load, 36Vin
120 Hz
Io=Io,min to Io,max
Vin=36V to75V
Ta=-40C to 85C
5Hz to 20MHz bandwidth
Output Voltage 10% Low
50% Io,max to 75% Io,max
75% Io,max to 50% Io.max
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
Ion/off at Von/off=0.0V
Logic High, Von/off=15V
S48SA1R812NRFA
Min.
Typ.
Max.
Units
80
100
-40
100
-55
125
1500
36
48
75
32.5
34
35.5
30.5
32
33.5
1
2
3
0.85
30
7
0.01
5
50
1.77
1.80
1.83
±2
±10
±2
±5
100
300
ppm/℃
1.73
1.87
30
75
5
20
0
12
13.2
15.6
18
35
100
35
100
200
6
12
6
12
2200
86
88
1500
10
1500
330
0
0.8
15
1
50
-10
+10
115
125
140
6.29
M hours
18
grams
115
Vdc
Vdc
°C
°C
Vdc
V
V
V
V
A
mA
mA
2
A
s
mA
dB
V
mV
mV
V
mV
mV
A
A
mV
mV
µs
ms
ms
µF
%
V
MΩ
pF
kHz
V
V
mA
uA
%
%
°C
2
Advertisement
Table of Contents
