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Delta Electronics Series S48SS manual

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Table of contents for the manual

  • Page 1

    DS_S48SS12001_060820 06 DATASHEET DS_S48SS12001_060820 06 Delta Electronics, Inc. 1  Telecom/DataCom  Wireless Networks  Optical Network Equipment  Server and Data Storage  Industrial/Test Equipment Delphi Series S48SS, 15W Family DC/DC Power Module: 48V in, 12V/1.25A out The Delphi Series S48SS, surface mountable, 48V i nput, single[...]

  • Page 2

    DS_s48SS12001_060820 06 TECHNICAL SPECIFICATIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal Vou t u nless otherwise noted.) PARAMETER NOTES and CONDITIONS S48SS12001NRFA Min. Ty p. Max. Units ABSOLUTE MAXIMUM RA TINGS Input Voltage Continuous 80 Vdc Transient (100ms) 100ms 100 Vdc Operating Temperature Refer to Figure 12 for the measur[...]

  • Page 3

    DS_s48SS12001_060820 06 ELECTRICAL CHARACTERISTICS CURVES 60 65 70 75 80 85 90 0. 2 5 0. 5 0 . 75 1 1. 2 5 O UTP UT CURRE NT (A ) EF F IC I EN C Y ( %) 36Vi n 48Vi n 75V i n 0. 0 0. 5 1. 0 1. 5 2. 0 2. 5 3. 0 3. 5 4. 0 0. 25 0. 5 0 . 75 1 1. 25 O UTP UT CURRE NT (A ) POW ER D ISSI PAT ION ( W Figure 1: Efficiency vs. load curr ent for mini mum, nom[...]

  • Page 4

    DS_s48SS12001_060820 06 4 ELECTRICAL CHARACT ERISTICS CURVES Figure5 : Turn-on transient at zero load current (10 ms/di v). Top Trace: Vout (5V/div); Bottom Tr ace: ON/OFF Control (2V/div). Figure 6: Output voltage response to step-chan ge in load current (50%-75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF, 100 m Ω  ESR tantalum capaci[...]

  • Page 5

    DS_s48SS12001_060820 06 ELECTRICAL CHARACTERISTICS CURVES Strip Copper Vo(-) Vo(+) 10u 1u SCOPE RESISTIV E LOAD Figure 9 : Output voltage noise and ripple measure ment test setup. Scope measurement shoul d 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) fro m the module. Fi[...]

  • Page 6

    DS_s48SS12001_060820 06 Figure 14: Output current vs. ambient temperature and air velocity (Vin=75V) Figure 15: Power dissipation vs. ambient temperature and air velocity . S48SS12001NR A Pow er Dissipation vs. Ambie nt Temperature and Air Ve locity 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 70 75 80 85 90 95 100 105 Ambien[...]

  • Page 7

    DS_s48SS12001_060820 06 DESIGN CONSIDERATION Input Source Impedance The impedance of the input source co nnecting to the DC/DC power modul es will interact with the modul es and affect the stability. A low ac-impedan ce input source is recommend ed. If the source inductance is more than a few µ H, we advise addi ng a 10 to 100 µ F electrolytic ca[...]

  • Page 8

    DS_s48SS12001_060820 06 8 Vo(+) Vo(-) Trim R trim-up Figure 17: Circuit configuration for trim-up (increase output voltage) If the external resistor is connected between the TRIM and Vo - the output voltage set point increases. The external resistor value required to obtai n a percentage output voltage change △ Vo% is defined as: [] ΚΩ − −[...]

  • Page 9

    DS_s48SS12001_060820 06 9 THERMAL CONSIDERATIONS Thermal management is an im porta nt part of the system design. To ensure proper, reliable operation, sufficie nt cooling of the power module is neede d over the entire temperature range of the modul e. Co nvection coolin g is usually the dominant mode of heat transfer. Hence, the choice of equipment[...]

  • Page 10

    DS_s48SS12001_060820 06 MECHANICAL DRAWING Pin No. Name Function 1 +Vout Positive output voltage 2 -Vout Negative output voltage 3 Trim Output voltage trim 4 NC No Connection 5 NC No Connection 6 NC No Connection 7 NC No Connection 8 ON/OFF ON/OFF Logic 9 NC No Connection 10 NC No Connection 11 -Vin Negative input voltage 12 +Vin Positive input vol[...]

  • Page 11

    DS_s48SS12001_060820 06 14 PART NUMBERING SYSTEM S 48 S S 120 01 N R F A Form Factor Input Voltage Number of Outputs Product Series Output Voltage Output Current ON/OFF Logic Pin Length Option Code S- Small Power 48V- 36V~75V S- Single S- SMD 120- 12.0V 01- 1.25A N- Negative P- Positive R- SMD Pin F- Ro HS 6/6 (Lead Free) A- Standard Function MODEL[...]