DC-DC Converter
QSB15048W Series
Input
Characteristic
Minimum
Typical
Maximum
Units
VDC
Notes & Conditions
Input Voltage Range
Input Surge
9
75
100
9.5
8.5
VDC for 100 ms
On: >8.5 V
Off: <7.5 V
9.0
8.0
1.0
12
On
Off
Undervoltage Lockout
VDC
Lockout Hysteresis
Idle Current
VDC
mA
A2s
18
1
When output is remotely turned off
Inrush Current
Recommended Input Fuse
Input Reflected Ripple Current
30
A
Fact acting type
50
mA pk-pk
Through 10 µH inductor
Output
Characteristic
Output Voltage
Output Trim
Minimum
Typical
Maximum
Units
VDC
%
Notes & Conditions
12
10
48
See Models and Ratings table
See Application Note (28 Vout at 9-13 Vin Trim: +0/-10%)
At full load and 36 V input
Initial Set Accuracy
Minimum Load
Line Regulation
Load Regulation
1.5
%
0
%
No minimum load required
0.2
0.2
%
From minimum to maximum input at full load
From 0% to full load for single/dual output
%
Maximum deviation, recovering to less than 1% in
500 µs for 25% step load change. For 5V output, add
1000 µF cap, for others add 100 µF
Transient Response
5.0
%
Start Up Time
100
30
150
50
ms
ms
Output Voltage Rise Time
Ripple & Noise
mV pk-pk
%
See models and ratings table
Overload Protection
Short Circuit Protection
Maximum Capacitive Load
Temperature Coefficient
Overvoltage Protection
105
115
160
200
Continuous hiccup mode, with auto recovery
See Models and Ratings table
0.03
140
%/˚C
%
Output is on if remote on/off (pin 2) is open or high (3.5-75 VDC)
Output turns off if remote on/off (pin 2) is low (<1.2 VDC max)
Remote On/Off
General
Characteristic
Minimum
Typical
Maximum
Units
%
Notes & Conditions
See Models and Ratings table
60 s
Efficiency
90
Isolation: Input to Output
1500
1500
VDC
Isolation: Input and output to Case
VDC
kHz
Ω
60 s
Switching Frequency
Isolation Resistance
200
9
10
3500
2500
12 & 15 V
Isolation Capacitance
Power Density
pF
24, 28 & 48 V
3
54
W/in
500
800
12 & 15 V MIL-HDBK-217F, +25 °C GB
Mean Time Between Failure
Weight
kHrs
lb (g)
24, 28 & 47 V MIL-HDBK-217F, +25 °C GB
0.24 (109.0)
Environmental
Characteristic
Minimum
-40
Typical
Maximum
+100
Units
Notes & Conditions
Operating Base Plate Temperature
Storage Temperature
Thermal Protection
Humidity
°C
°C
-55
+105
+110
°C
95
%RH
Non-condensing
Base plate cooled
Cooling
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