ELECTRICAL CHARACTERISTICS CURVES

Copper

Strip

 

 

Vo(+)

 

 

 

10u

1u

SCOPE

RESISTIVE

 

LOAD

 

 

 

Vo(-)

 

 

 

Figure 9: Input Reflected Ripple Current, is, at full rated output current and nominal input voltage with 12µH source impedance and 100µF electrolytic capacitor (2 mA/div).

Figure 10: Output voltage noise and ripple measurement test setup. Scope measurement 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.

Figure 11: Output voltage ripple at nominal input voltage and

rated load current (10 mV/div). Load capacitance: 1µF ceramic

capacitor and 10µF tantalum capacitor. Bandwidth: 20 MHz.

(V)

2.0

 

 

 

 

VOLTAGE

1.8

 

 

 

 

1.6

 

 

 

 

OUTPUT

 

 

 

 

1.4

 

 

 

 

 

1.2

 

 

 

 

 

1.0

 

 

 

 

 

0.8

 

 

 

 

 

0.6

 

 

 

 

 

0.4

 

 

 

 

 

0.2

 

 

 

 

 

0.0

Vin=24V

 

 

 

 

0.0

5.0

10.0

15.0

20.0

LOAD CURRENT (A)

Figure 12: Output voltage vs. load current showing typical current limit curves and converter shutdown points.

5

DS_S24SA1R812_05092006

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Delta Electronics S24SA manual Scope Resistive Load