V48SC datasheet(6/17 Pages) DELTA

6 / 17 page

DS_V48SC12007_04262016

ELECTRICAL CHARACTERISTICS CURVES

Figure 9: 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

Figure 10: Input Terminal Ripple Current, ic, at full rated output

current and nominal input voltage with 12µH source impedance

and 33µF electrolytic capacitor (200 mA/div, 1us/div)

Figure 11: Input reflected ripple current, is, through a 12µH

source inductor at nominal input voltage and rated load current

(20 mA/div, 2us/div)

Figure 12: Output voltage noise and ripple measurement test

setup

Figure 13: Output voltage ripple at nominal input voltage and

rated load current (Io=7.5A)(50 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.

Strip

Copper

Vo(-)

Vo(+)

10u

SCOPE

RESISTIVE

LOAD

Vin+

Vin-

100uF,

ESR=0.2 ohm @

25oC 100KHz

Cs: 220uF

Vin+

Vin-

100uF,

ESR=0.2 ohm @

25oC 100KHz

Cs: 220uF

100uF,

ESR=0.2 ohm @

25oC 100KHz

Cs: 220uF

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