Delta-electronics E48SR User Manual

DATASHEET DS_E48SR1R825_05222008 FEATURES  High Efficiency: 90.5% @ 1.8V/25A  Size: 58.4mmx22.8mmx8.4mm (2.30”x0.90”x0.33”)  Industry

DS_E48SR1R825_05222008 10 FEATURES DESCRIPTIONS (CON.) Output Voltage Adjustment (TRIM) To increase or decrease the output voltage set point, con

DS_E48SR1R825_05222008 11 THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, reliable operati

DS_E48SR1R825_05222008 12 PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD)

DS_E48SR1R825_05222008 13 LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE Time ( sec. ) Pre-heat temp. 140~180°C 60~120 sec. Peak temp. 210~230°C 5s

DS_E48SR1R825_05222008 14 MECHANICAL DRAWING Surface-mount module Through-hole module Pin No. Name Function 1 2 3 4 5 6 7 8 +Vin ON/OFF -

DS_E48SR1R825_05222008 15 PART NUMBERING SYSTEM E 48 S R 1R8 25 N R F A Type of Product Input Voltage Number of Outputs Product Series Output V

DS_E48SR1R825_05222008 2 TECHNICAL SPECIFICATIONS (TA=25°C, airflow rate=300 LFM, Vin=48Vdc, nominal Vout unless otherwise noted) PARAMETER NOTES

DS_E48SR1R825_05222008 3 ELECTRICAL CHARACTERISTICS CURVES Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at

DS_E48SR1R825_05222008 4 ELECTRICAL CHARACTERISTICS CURVES For Negative Remote On/Off Logic Figure 4: Turn-on transient at full rated load current

DS_E48SR1R825_05222008 5 ELECTRICAL CHARACTERISTICS CURVES Figure 8: Output voltage response to step-change in load current (75%-50%-75% of Io, ma

DS_E48SR1R825_05222008 6 ELECTRICAL CHARACTERISTICS CURVES Figure 11: Input Terminal Ripple Current, ic, at full rated output current and nominal i

DS_E48SR1R825_05222008 7 ELECTRICAL CHARACTERISTICS CURVES Figure 14: Output voltage ripple at nominal input voltage and rated load current (Io=25A

DS_E48SR1R825_05222008 8 DESIGN CONSIDERATIONS Input Source Impedance The impedance of the input source connecting to the DC/DC power modules wil

DS_E48SR1R825_05222008 9 FEATURES DESCRIPTIONS Over-Current Protection The modules include an internal output over-current protection circuit, w