Delta-electronics Q48DC User Manual

FEATURES  High efficiency: 88%@ ±12.1V/2.7A  Size: 57.9mm x 36.8mm x 9.7mm (2.28”×1.45”×0.38”)  Industry standard pin out  Fixed frequen

DS_Q48DC12003_03112008 10 FEATURES DESCRIPTIONS (CON.) Output Voltage Adjustment (TRIM) To increase or decrease the output voltage set point, the

DS_Q48DC12003_03112008 11 THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, reliable operati

DS_Q48DC12003_03112008 12 MECHANICAL DRAWING Pin No. Name Function 1 2 3 4 5 6 7 +Vin ON/OFF -Vin -Vout GND Trim +Vout Positive input voltag

DS_Q48DC12003_03112008 13 PART NUMBERING SYSTEM Q 48 D C 120 03 N R F A Product Type Input Voltage Number of Outputs Product Series Out

DS_Q48DC12003_03112008 2 TECHNICAL SPECIFICATIONS (TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted.) PARAMETER

DS_Q48DC12003_03112008 3 ELECTRICAL CHARACTERISTICS CURVES 60636669727578818487900.3 0.7 1.1 1.5 1.9 2.3 2.7OUTPUT CURRENT( A )EFFICIENCY (%)

DS_Q48DC12003_03112008 4 ELECTRICAL CHARACTERISTICS CURVES Figure 4: Turn-on transient at zero load current (10ms/div). Vin=48V. Top Trace: Vout: 5

DS_Q48DC12003_03112008 5 ELECTRICAL CHARACTERISTICS CURVES 60636669727578818487900.3 0.7 1.1 1.5 1.9 2.3 2.7OUTPUT CURRENT( A )EFFICIENCY (%)

DS_Q48DC12003_03112008 6 ELECTRICAL CHARACTERISTICS CURVES Figure 10: Test set-up diagram showing measurement points for Input Terminal Ripple

DS_Q48DC12003_03112008 7 ELECTRICAL CHARACTERISTICS CURVES Vo(-)Vo(+)10u 1uCopper StripSCOPE RESISTIVLOADFigure 13: Output voltage noise and rippl

DS_Q48DC12003_03112008 8 DESIGN CONSIDERATIONS Input Source Impedance The impedance of the input source connecting to the DC/DC power modules wil

DS_Q48DC12003_03112008 9 FEATURES DESCRIPTIONS Over-Current Protection The modules include an internal output over-current protection circuit, wh