H48SA12025NNFA Datasheet, PDF (6/14 Pages) Delta Electronics, Inc. – Delphi Series H48SA, Half Brick Family DC/DC Power Modules: 48V in, 12V/25A out

ELECTRICAL CHARACTERISTICS CURVES
0
0
Figure 13: Input Terminal Ripple Current, i_c, at nominal input
voltage and rated load current with 12µH source impedance
and 100µF electrolytic capacitor, 500 mA/div, 2us/div.
Copper Strip
Vo(+)
Figure 14: Input reflected ripple current, i_s, through a 12µH
source inductor at nominal input voltage and rated load current,
20 mA/div, 2us/div.
10u
1u
SCOPE
RESISTIVE
LOAD
0
Vo(-)
Figure 15: Output voltage noise and ripple measurement
test setup
Figure 16: Output voltage ripple at nominal input voltage and
rated load current, 50mV/div, 2us/div. Load capacitance: 1µF
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.
12
10
8
6
4
2
0
0
5
10
15
20
25
30
35
Output Current (A)
Figure 17: Output voltage vs. load current showing typical
current limit curves and converter shutdown points.
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DS_H48SA12025_05112009