Delta Electronics Series H48SV Thermal Considerations, Thermal Derating, Thermal Testing Setup

Contents FEATURES OPTIONSAPPLICATIONS DATASHEET DSH48SV0502008102007TECHNICAL SPECIFICATIONS INPUT CHARACTERISTICSOUTPUT 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 5A/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 Copper Strip SCOPELOAD OUTPUT VOLTAGE Vin=48VLOAD CURRENT A THERMAL CURVES NO HEATSINK Figure 19 Power dissipation vs. ambient temperature and airFigure 18 Output current vs. ambient temperature and air velocity V in=75VSafety Considerations Soldering and Cleaning ConsiderationsDESIGN CONSIDERATIONS Input Source ImpedanceFEATURES DESCRIPTIONS Over-Current ProtectionOver-Voltage Protection Over-Temperature ProtectionFEATURES DESCRIPTIONS CON Output Voltage Adjustment TRIMThermal Testing Setup THERMAL CONSIDERATIONSThermal Derating Pin Specification MECHANICAL DRAWINGName FunctionWARRANTY PART NUMBERING SYSTEMMODEL LIST EFF @ 100% LOAD