E48SP3R360 Datasheet, PDF (5/15 Pages) Delta Electronics, Inc. – 48V in, 3.3V, 60A out

ELECTRICAL CHARACTERISTICS CURVES
is
+
Cs: 220uF
ic
+
100uF,
ESR=0.2 ohm @
25^oC 100KHz
Vin+
Vin-
Figure 10: 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 (LTEST) of 12 µH. Capacitor Cs offset possible
battery impedance. Measure current as shown above
0
Figure 11: Input Terminal Ripple Current, ic, at full rated
output current and nominal input voltage with 12µH
source impedance and 100µF electrolytic capacitor (200
mA/div, 2us/div)
Vo(+)
Copper Strip
0
10u
1u
SCOPE RESISTIVE
LOAD
Vo(-)
Figure 12: Input reflected ripple current, is, through a 12µH
source inductor at nominal input voltage and rated load
current (20 mA/div, 2us/div)
Figure 13: Output voltage noise and ripple
measurement test setup
0
Figure 14: Output voltage ripple at nominal input voltage
and rated full load current (100 mV/div, 1us/div)
Load capacitance: 1µF ceramic capacitor and 10µF
tantalum capacitor. Bandwidth: 20 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.
5
DS_E48SP3R360_08062010