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SQE48T40018 DC-DC Converter
36-75 VDC Input; 1.8 VDC @ 40 A Output
Data Sheet
Electrical Specifications (continued)
Conditions: T A = 25 oC, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Cin=33 μF, unless otherwise specified.
Parameter
Notes
Min
Typ
Max
Units
Output Characteristics
External Load Capacitance
Output Current Range
Plus full load (resistive)
0
20,000
40
μF
ADC
Current Limit Inception
Non-latching
42
52
ADC
Peak Short-Circuit Current
RMS Short-Circuit Current
Output Voltage Set Point (no load) 2
Non-latching, Short = 10 m ?
Non-latching
-1
50
11
+1
A
Arms
%Vout
Output Regulation
Over Line
Over Load
±2
±2
±5
±5
mV
mV
Output Voltage Range
Output Ripple and Noise – 25 MHz bandwidth
Over line, load and temperature 2
Full load + 10 μF tantalum + 1 μF ceramic
V OUT = 1.8 VDC
-3.0
40
+3.0
%Vout
mV PK-PK
Dynamic Response
Load Change 50%-75%-50% of Iout Max,
di/dt = 0.1 A/ μ s
Settling Time to 1% of Vout
di/dt = 2.5 A/ μ s
Settling Time to 1% of Vout
Co = 1 μF ceramic (Figure 8)
Co = 470μF POS + 1μF ceramic (Figure 9)
40
100
150
20
mV
μs
mV
μs
Efficiency
100% Load
50% Load
V OUT = 1.8 VDC
V OUT = 1.8 VDC
87.8
90.8
%
%
Mechanical
Weight
25.1g
Vibration IEC Class 3M5
Shocks IEC Class 3M5
Reliability
Freq. Velocity IEC 68-2-6
Freq. Accelerat. IEC 68-2-6
Accelerat. IEC 68-2-29
MIL-STD-202F
5-9Hz 5mm/s
9-200Hz 1g
10g
Method 213B Cond. F
MTBF
Telcordia SR-332, Method I Case 1
50% electrical stress, 40°C ambient
15.4
MHrs
Additional Notes:
2
Operating ambient temperature range of -40 oC to 85 oC for converter.
ZD-01744 Rev 1.1.1, 23-Feb-10
www.power-one.com
Page 4 of 13
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