Delta Electronics Delphi Q48SP Datasheet page 6

ELECTRICAL CHARACTERISTICS CURVES
Vo(+)
10u
Vo(-)
Figure 11: Output voltage noise and ripple measurement
test setup
Figure 13: Output voltage ripple at 48V input voltage and
rated load current (50 mV/div). Load capacitance: 1µF
ceramic capacitor and 10µF tantalum capacitor. Bandwidth:
25 MHz. Scope measurements 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.
DS_Q48SP12017_05302008
Copper Strip
SCOPE
1u
RESISTIVE
LOAD
Figure 12: Output voltage ripple at 36V input voltage and rated
load current (50 mV/div). Load capacitance: 1µF ceramic
capacitor and 10µF tantalum capacitor. Bandwidth: 25 MHz.
Scope measurements 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.
Figure 14: Output voltage ripple at 75V input voltage and rated
load current (50 mV/div). Load capacitance: 1µF ceramic
capacitor and 10µF tantalum capacitor. Bandwidth: 25 MHz.
Scope measurements 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.
6