d48s1238 Delta Electronics, Inc., d48s1238 Datasheet - Page 5

• Manufacturer Part Number: d48s1238
• Description: Delphi Series D48s1238, 450w Quarter Brick Dc/dc Power Modules 48v In, 12v/38a Out
• Manufacturer: Delta Electronics, Inc.

DS_D48S1238-2_10232008
ELECTRICAL CHARACTERISTICS CURVES
Figure 7: Test set-up diagram showing measurement points for
Input Terminal Ripple Current and Input Reflected Ripple
Current.
Note: Measured input reflected-ripple current with a simulated
source Inductance (L
possible battery impedance. Measure current as shown above.
Figure 9: Output voltage noise and ripple measurement test
setup.
TEST
) of 12 μH. Capacitor Cs offset
Figure 8: Input Terminal Ripple Current, i
current and nominal input voltage with 12µH source impedance
and 33µF electrolytic capacitor (50 mA/div).
Figure 10: Output voltage ripple at nominal input voltage and
rated load current (20mV/div). Load capacitance: 2200uF*2
electrical capacitor, 0.47µF ceramic capacitor and 10µF
tantalum capacitor. Bandwidth: 20 MHz. Scope measurement
should be made using a BNC cable (length shorter than 20
inches). Position the load between 51 mm to 76 mm (2 inches
to 3 inches) from the module.
c
, at full rated output
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