Q48DW3R312NRFA Datasheet, PDF(7/14 Page) Delta Electronics, Inc. – Delphi Series Q48DW, 45W Quarter Brick, Dual Output DC/DC Power Modules: 1.2V/13A and 3.3V/8A

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Q48DW3R312NRFA Datasheet, PDF (7/14 Pages) Delta Electronics, Inc. – Delphi Series Q48DW, 45W Quarter Brick, Dual Output DC/DC Power Modules: 1.2V/13A and 3.3V/8A

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ELECTRICAL CHARACTERISTICS CURVES

Figure 17: Input Terminal Ripple Current-ic, at full rated

output current and nominal input voltage with 12ÂµH source

impedance and 33ÂµF electrolytic capacitor (500 mA/div,

2us/div).

Figure 18: Input reflected ripple current-is, through a 12ÂµH source

inductor at nominal input voltage and rated load current (20

mA/div, 2us/div).

Vo(+)

Vo(-)

Copper Strip

10u

SCOPE RESISTIV

LOAD

Figure 19: Output voltage noise and ripple measurement

test setup

Figure 20: Output voltage ripple at nominal input voltage and

rated load current (Iout1=Iout2=Full). Top trace: Vout2 (20mV/div),

Bottom trace:Vout1(20mV/div)

Load capacitance: 1ÂµF ceramic capacitor and 10ÂµF 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.

DS_Q48DW3R312_07202006

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