Delta Electronics Q48SP manual Output voltage noise and ripple measurement test setup

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ELECTRICAL CHARACTERISTICS CURVES

Copper Strip

 

 

 

Vo(+)

 

 

 

10u

1u

SCOPE

RESISTIVE

 

LOAD

 

 

 

Vo(-)

 

 

 

Figure 11: Output voltage noise and ripple measurement test setup

Figure 12: Output voltage ripple at 36V input voltage and rated

load current (50 mV/div). Load capacitance: 1µF ceramic

capacitor and 10µF tantalum capacitor. Bandwidth: 25 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.

Figure 13: Output voltage ripple at 48V input voltage and

rated load current (50 mV/div). Load capacitance: 1µF ceramic capacitor and 10µF tantalum capacitor. Bandwidth: 25 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.

Figure 14: Output voltage ripple at 75V input voltage and rated

load current (50 mV/div). Load capacitance: 1µF ceramic

capacitor and 10µF tantalum capacitor. Bandwidth: 25 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_Q48SP12017_05302008

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Contents Options Technical Specifications ParameterElectrical Characteristics Curves Typical input characteristics at room temperature Electrical Characteristics Curves Output voltage noise and ripple measurement test setup Design Considerations Input Source ImpedanceFeatures Descriptions Features Descriptions CON = Vnom −Vadj ×100 VnomThermal Testing Setup Thermal ConsiderationsThermal Derating Mechanical Drawing Without Heatsperader Name FunctionMechanical Drawing for Q48SP12017Exxx Mechanical Drawing with Heatspreader Part Numbering System Model List