ELECTRICAL CHARACTERISTICS CURVES

Vo(+)

CopperStrip

10u

1u

SCOPE RESISTIV

LOAD

 

 

Vo(-)

Figure 13: Output voltage noise and ripple measurement test setup.

 

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VOLTAGE(V)

 

 

 

 

 

 

 

 

 

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LOAD CURRENT(A)

Figure 15: Output voltage vs. load current showing typical current limit curves and converter shutdown points.

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.

DS_Q48DC12003_03112008

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Delta Electronics Q48DC manual Scope Resistiv