Delta-electronics Q48DC Manual de usuario descargar pdf (Pagina 7)

DS_Q48DC12003_03112008

ELECTRICAL CHARACTERISTICS CURVES

Vo(-)

Vo(+)

10u 1u

Copper Strip

SCOPE RESISTI

LOAD

Figure 13: Output voltage noise and ripple measurement

test setup.

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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LOA D CURRENT( A )

OUTPUT VOLTAGE(V) 1

Figure 15: Output voltage vs. load current showing typical

current limit curves and converter shutdown points.

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Delta-electronics Q48DC Manual de usuario Pagina 7