Delta Electronics Delphi Q48DC Datasheet page 7

ELECTRICAL CHARACTERISTICS CURVES
Copper Strip
Vo(+)
10u
Vo(-)
Figure 13: Output voltage noise and ripple measurement
test setup.
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2
1
0
0 1 2 3
Figure 15: Output voltage vs. load current showing typical
current limit curves and converter shutdown points.
DS_Q48DC12003_03112008
SCOPE RESISTIV
1u
LOAD
4 5 6 7 8
LOAD CURRENT(A)
Figure 14: Output voltage ripple at nominal input voltage
(Vin=48V) and rated load current (Io1=Io2=2.7A,20 mV/div). Load
capacitance: 1µF ceramic capacitor and 10µF tantalum capacitor.
Bandwidth: 20 MHz. (See Figure 13). Scope measurement should
be made using a BNC cable (length short than 20 inch). Position
the load between 51 mm and 76 mm (2inch and 3 inch) from the
module.
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