Q48T25033 DC-DC Converter Data Sheet
36-75 VDC Input; 3.3 VDC @ 25A Output
Electrical Specifications (continued)
Conditions: T A =25oC, Airflow=300 LFM (1.5 m/s), Vin=48 Vdc, unless otherwise specified.
PARAMETER
NOTES
MIN
TYP
MAX
UNITS
INPUT CHARACTERISTICS
Maximum Input Current
Input Stand-by Current
Input No Load Current (0 load on the output)
Input Reflected-Ripple Current
Input Voltage Ripple Rejection
25 Adc, 3.3 Vdc Out @ 36 Vdc In
Vin = 48 V, converter disabled
Vin = 48 V, converter enabled
See Figure 24 - 25MHz bandwidth
120Hz
3.8
66
6
TBD
2.6
Adc
mAdc
mAdc
mA PK-PK
dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point (no load)
3.267
3.300
3.333
Vdc
Output Regulation
Over Line
Over Load
±2
±2
±5
±5
mV
mV
Output Voltage Range
Over line, load and temperature
2
3.250
3.350
Vdc
Output Ripple and Noise - 25MHz bandwidth
Full load + 10 μF tantalum + 1 μF ceramic
30
50
mV PK-PK
DYNAMIC RESPONSE
Load Change 30% of Iout Max, di/dt = 0.1 A/μS
di/dt = 5 A/μS
Setting Time to 1%
Co = 1 μF ceramic (Fig.19)
Co = 450 μF tant. + 1 μF ceramic (Fig.20)
50
140
100
mV
mV
μ s
EFFICIENCY
100% Load
50% Load
Additional Notes:
2. -40oC to 85oC
MAR 20, 2003 revised to NOV 20, 2006
Page 3 of 14
88.5
88.5
%
%
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