Delta Electronics Series Q48DR manual Electrical Characteristics Curves, Vo+ Vo, CopperStrip, Load

ELECTRICAL CHARACTERISTICS CURVES

Figure 13: Input Terminal Ripple Current-ic, at full rated output current and nominal input voltage with 12µH source impedance and 33µF electrolytic capacitor (500 mA/div, 2us/div).

Figure 14: Input reflected ripple current-is, through a 12µH source inductor at nominal input voltage and rated load current (20 mA/div, 2us/div).

Vo(+)

Vo(-)

CopperStrip

10u	1u	SCOPE RESISTIV
		LOAD

Figure 15: Output voltage noise and ripple measurement test setup

Figure 16: Output voltage ripple at nominal input voltage and rated load current (Iout1=Iout2=15A)(20 mV/div, 1us/div). Top trace: Vout2(20mV/div), Bottom trace(20mV/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.

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DS_Q48DR1R833_03162007