DS_Q48SP12017_05302008
2
TECHNICAL SPECIFICATIONS
(T
A
=25°C, airflow rate=300 LFM, V
in
=48Vdc, nominal Vout unless otherwise noted; mounted on board.)
PARAMETER
NOTES and CONDITIONS
Q48SP12017NRFA
Min.
Typ.
Max.
Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
-0.5 80 Vdc
Transient (100ms, non-operating)
100ms
100
Vdc
Operating Temperature
Refer to Figure 22 for the measuring point
-40
120
°C
Storage Temperature
-40
105
°C
Input/Output Isolation Voltage
2250
Vdc
INPUT CHARACTERISTICS
Operating Input Voltage
36
48
75
Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold
33
34
36
Vdc
Turn-Off Voltage Threshold
30 32 34 Vdc
Lockout Hysteresis Voltage
1
2
3
Vdc
Maximum Input Current
100% Load, 36Vin
7
A
No-Load Input Current
140
mA
Off Converter Input Current
11
mA
Inrush Current (I
2
t)
1
A
2
S
Input Reflected-Ripple Current
P-P thru 12µH inductor, 5Hz to 20MHz
10
mA
Input Voltage Ripple Rejection
120 Hz
50
dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Vin=48V, Io=Io.max, Ta=25C
11.8
12
12.2
Vdc
Output
Voltage
Regulation
Over Load
Io=Io,min to Io,max
6
24
mV
Over Line
Vin=36V to 75V
6
24
mV
Over Temperature
Ta=-40C to135C
32
60
mV
Total Output Voltage Range
over sample load, line and temperature
11.6
12.4
V
Output Voltage Ripple and Noise
5Hz to 20MHz bandwidth
Peak-to-Peak
Full Load, 1µF ceramic, 10µF tantalum
150
mV
RMS
Full Load, 1µF ceramic, 10µF tantalum
50
mV
Operating Output Current Range
0
18
A
Output DC Current-Limit Inception
Output Voltage 10% Low
19
21
24
A
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
Positive Step Change in Output Current
50% Io,max to 75% Io,max
300
mV
Negative Step Change in Output Current
75% Io,max to 50% Io,max
300
mV
Settling Time (within 1% Vout nominal)
400
uS
Turn-On Transient
Start-Up Time, From On/Off Control
8
mS
Start-Up Time, From Input
6
mS
Maximum Output Capacitance
Full load; 5% overshoot of Vout at startup 0 `1500
µF
EFFICIENCY
100% Load
92.5
%
ISOLATION CHARACTERISTICS
Input to Output
2250
Vdc
Isolation Resistance
10
M
Ω
Isolation Capacitance
1000
pF
FEATURE CHARACTERISTICS
Switching Frequency
300
kHz
ON/OFF Control, (Logic Low-Module ON)
Logic Low
Von/off at Ion/off=1.0mA
0
1
V
Logic High
Von/off at Ion/off=0.0 µA
2
15
V
ON/OFF Current
Ion/off at Von/off=0.0V
1
mA
Leakage Current
Logic High, Von/off=15V
50
uA
Output Voltage Trim Range (not available on Exxx code)
Across Pins 9 & 5, Pout <= max rated power
-20
+10
%
Output Voltage Remote Sense Range (not available on Exxx)
Pout <= max rated power
0.5
V
Output Over-Voltage Protection
Over full temp range; % of nominal Vout
13.5
16.5
V
GENERAL SPECIFICATIONS
MTBF
Io=80% of Io, max; Ta=25°C
2.40
M hours
Weight
45
grams
Over-Temperature Shutdown
Refer to Figure 22 for the measuring point
130
°C