Delta Electronics H48SV manual Electrical Characteristics Curves

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Figure 13: Output voltage noise and ripple measurement test setup

ELECTRICAL CHARACTERISTICS CURVES

Figure 11: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 12µH source impedance and 33µF electrolytic capacitor (200 mA/div).

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

Vo(+)

Copper Strip

10u	1u	SCOPE	RESISTIVE
			LOAD

Vo(-)

Figure 13: Output voltage noise and ripple measurement test setup

DS_H48SV05030_08102007

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Contents APPLICATIONS FEATURESOPTIONS DATASHEET DSH48SV0503004262006OUTPUT CHARACTERISTICS TECHNICAL SPECIFICATIONSINPUT CHARACTERISTICS DYNAMIC CHARACTERISTICSELECTRICAL CHARACTERISTICS CURVES For Negative Remote On/Off Logic For Positive Remote On/Off LogicFigure 8 Output voltage response to step-change in load current 50%-75%-50% of Imax dI/dt = 0.1A/µs.Vin=48V. Load cap 10µF, tantalum capacitor and 1µF ceramic capacitor. Top trace Vout 100mV/div, Bottom trace Iout 10A/div. Scope measurement should be made using a BNC cable length shorter than 20 inch. Position the load between 51 mm and 76 mm 2 inches and 3 inches from the module 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 Io=30A 20 mV/div. Load capacitance 1µF ceramic capacitor and 10µF tantalum capacitor. Bandwidth 20 MHz. Scope measurement should be made using a BNC cable length shorter than 20 inches. Position the load between 51 mm and 76 mm 2 inches and 3 inches from the module DESIGN CONSIDERATIONS Safety ConsiderationsSoldering and Cleaning Considerations Input Source ImpedanceOver-Voltage Protection FEATURES DESCRIPTIONSOver-Current Protection Over-Temperature ProtectionFEATURES DESCRIPTIONS CON Output Voltage Adjustment TRIMTHERMAL CURVES Thermal Testing SetupTHERMAL CONSIDERATIONS Thermal DeratingName Pin SpecificationMECHANICAL DRAWING FunctionMODEL LIST WARRANTYPART NUMBERING SYSTEM EFF @ 100% LOAD