Delta Electronics S48SP manual

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Table of contents for the manual

  • Page 1

    FEA TURES  High efficiency: 90% @5V/7A  Industry standard 1x2 pin out  Size: 33.0x24.4x8.55mm (1.30”x0.96”x0.34”)  SMD and Through-hole versions  Fixed frequency operation  2:1 input voltage range  Input UVLO, OVP  OTP and output OCP , OVP (default is auto-restart)  Output voltage trim ±10%  Negative On/Off  [...]

  • Page 2

    DS_S48SP05007_05222008 2 TECHNICAL SPECIFICA TIONS ( T A =25°C, airflow rate=300 LFM, V in =48Vdc, n ominal V out unle ss otherwise noted.) PA R A M E T E R NOTES and CONDITIONS S48SP05007 (St andard) Min. T yp. Max. Un its ABSOLUTE MAXIMUM RA TINGS Input V oltage Continuous 80 Vdc Transient (100ms ) 100ms 100 Vdc Operating Case T emperature Refer[...]

  • Page 3

    DS_S48SP05007_05222008 3 ELECTRICAL CHARACTERISTICS CUR VES Figure 1: Ef ficiency vs. load current for minimum, nomi nal, and maximum in put voltage at 25°C Figure 2: Power dissipation vs. load current for min imum, nominal, and max imum input voltage at 25°C. Figure 3: T ypical full load input charac teristics at room temperature[...]

  • Page 4

    DS_S48SP05007_05222008 4 ELECTRICAL CHARACTERISTICS CUR VES For Negative Remote On/Off Logic Figure 4: T urn-on transient at full rated load current (5 ms/div). Vin=48V . T op T race: V out, 2V/div; Bottom T race: ON/OFF input, 2V/div Figure 5: T urn-on transient at zero load current (5 ms/ div). Vin=48V . T op T r ace: Vout, 2V /div , Bot tom T ra[...]

  • Page 5

    DS_S48SP05007_05222008 5 ELECTRICAL CHARACTERISTICS CUR VES Figure 8: Output voltage response to step-change in load current (75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF tantalum cap acitor and 1 µF ceramic capa citor. T op T race: V out (100mV/div , 50us/div), Bottom T race: Iout (2A/div). Sc ope measurement should be made usi ng a BNC[...]

  • Page 6

    DS_S48SP05007_05222008 6 ELECTRICAL CHARACTERISTICS CUR VES Figure 1 1: Input T erminal Ripple Current, i c , at full rated out put current and nominal i nput voltage with 12µH source impedance and 33µF electrolytic capacitor (100mA/div , 1 us/div) Figure 12: Input reflected ripple current, i s , through a 12µH source inductor at nominal input v[...]

  • Page 7

    DS_S48SP05007_05222008 7 DESIGN CONSIDERA TIONS Input Source Impedance The impedance of the input sou rce connecting to the DC/DC powe r modules will interact wit h the modules and affect the stability. A low ac-impedance input sou rce is recommended. If the source ind uctance is more than a few μ H, we advise adding a 10 to 100 μ F electrolytic [...]

  • Page 8

    DS_S48SP05007_05222008 8 FEA TURES DESCRIPTIONS Over-Current Protection The modules include an internal output over-curre nt protection circuit, which will endure current limiting for an unlimited duration during output overload. If the output current exceeds the OCP set point, the modul es will automatically shut dow n, and enter hiccup mode or la[...]

  • Page 9

    DS_S48SP05007_05222008 9 FEA TURES DESCRIPTIONS (CON.) Output V olt age Adjustment To increase or decrea se the output voltage set point, the modules may be connected wit h an external resistor between the TRIM pin and either the Vo (+) or Vo(-). The TRIM pin should be left open if this feature is not used. R Load Vo ( +) Tri m V o (-) R trim -do w[...]

  • Page 10

    DS_S48SP05007_05222008 10 THERMAL CONSIDERA TIONS Thermal management is an importa nt part of the system design. To ensure prop er, reliable operation, sufficient cooling of the power mod ule is needed over the entire temperature range of the modul e. Convection coolin g is usually the dominant mode of heat transfer. Hence, the choice of equipment [...]

  • Page 11

    DS_S48SP05007_05222008 11 P I C K A N D P L A C E L O C A T I O N S U R F A C E - M O U N T T A P E & R E E L RECOMMENDED P AD LA YOUT (SMD)[...]

  • Page 12

    DS_S48SP05007_05222008 12 LEADED (Sn/Pb) PROCESS RECOMMEND TEMP . PROFILE T ime ( sec. ) Pre-h eat tem p. 140~180 ° C 60~120 sec. Peak tem p. 210~230 ° C 5sec . Ramp-up te mp. 0.5~3.0 ° C /sec . T emperature ( ° C ) 50 100 150 200 250 300 60 0 120 180 240 2nd Ramp-up temp. 1.0~3.0 ° C /sec. Over 200 ° C 40~50sec. Co oling down ra te <3 ° [...]

  • Page 13

    DS_S48SP05007_05222008 13 MECHANICAL DRA WING Surface-mount module Through-Hole module Pin No. Name Function 1 2 3 4 5 6 +Vin -Vin ON/OFF (Optional) -V out TRIM (Optional) +V out Positive input voltage Negative input voltage Remote ON/OFF (Optional) Negative output voltage Output voltage trim (Optional) Positive output voltage[...]

  • Page 14

    DS_S48SP05007_05222008 14 P ART NUMBERING SYSTEM S 48 S P 050 07 N R F B Product Ty p e Input V oltage Number of Output s Product Series Output V oltage Output Current ON/OFF Logic Pin Length/T ype Option Code S - Small Power 48 - 36V~75V S - Single 1x1, 10A 050 - 5V 07 - 7A N - Negative (Default) P - Positive E - No remote on/off control pin R - 0[...]