Delta Electronics Q48DC manual Electrical Characteristics Curves

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ELECTRICAL CHARACTERISTICS CURVES

Figure 10: Test set-up diagram showing measurement points for Input Terminal Ripple Current and Input Reflected Ripple Current.

Note: Measured input reflected-ripple current with a simulated source Inductance (LTEST) of 12 μH. Capacitor Cs offset possible battery impedance. Measure current as shown above.

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

Figure 11: 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).

DS_Q48DC12003_03112008

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Contents Options Technical Specifications ParameterElectrical Characteristics Curves Electrical Characteristics Curves 1µF ceramic capacitor. Top trace Vout 100mV/div Electrical Characteristics Curves Scope Resistiv Design Considerations Input Source ImpedanceOver-Current Protection Features DescriptionsOver-Temperature Protection Over-Voltage ProtectionFeatures Descriptions CON Output Voltage Adjustment TrimThermal Testing Setup Thermal ConsiderationsThermal Derating Mechanical Drawing Pin No Name FunctionPart Numbering System Model List