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Delta Electronics E48SR manual

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Table of contents for the manual

  • Page 1

    DATASHEET DS_E48SR15004_05 222008 FEATURES  High Efficiency: 91.5% @ 15V/4A  Size: 58.4mmx22.8mmx8.4mm (2.30”x0.90”x0.33”)  S tandard footprint  Industry standard pin out  Fixed frequency operation: 35 0KHz  Input UVLO, Output OCP , OVP , OTP  Basic insulation  No minimum load required  2:1 Input voltage range  I[...]

  • Page 2

    DS_E48SR15004_052 22008 2 TECHNICAL SPECIFICA TIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal V ou t unless otherw ise noted) . PA R A M E T E R NOTES and CONDITIONS E48SR15004 (St andard) Min. T yp . Max. Un its ABSOLUTE MAXIMUM RA TINGS Input V oltage Continuous 80 Vdc T ransient (100ms) 100ms 100 Vdc Operating Case T emperature Ple[...]

  • Page 3

    DS_E48SR15004_052 22008 3 ELECTRICAL CHARACTERISTICS CUR VES Figure 1: Efficiency vs. load current for minimum, nominal, and maximum in put voltage at 25°C Figure 2: Power dissipation vs. load current for minimum, nominal, and max imum input voltage at 25°C. Figure 3: T ypical full load input cha racteristics at room temperature[...]

  • Page 4

    DS_E48SR15004_052 22008 4 ELECTRICAL CHARACTERISTICS CUR VES For Negative Remote On/Off Logic Figure 4: T urn-on transient at full ra ted load current (resi stor load) (2ms/div). Vin=48V . T op T race: V out, 5V/div; Bottom T race: ON/OFF input, 5V/div Figure 5: T urn-on tra nsient at zero load current (2ms/div). Vin=48V .T op T race: Vout, 5V/div;[...]

  • Page 5

    DS_E48SR15004_052 22008 5 ELECTRICAL CHARACTERISTICS CUR VES Figure 8: Output voltage response to step-change in load current (75%-50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF t antalum capacitor and 1µF ceramic capacitor . T op T race: V out (0.2V/div ,200 us/div), Bottom T race: Iout (1 A /div). Scope measurement should be made usi ng [...]

  • Page 6

    DS_E48SR15004_052 22008 6 ELECTRICAL CHARACTERISTICS CUR VES Figure 1 1: Input T erminal Ripple Current, i c , at full rated output current and nominal i nput voltage with 12µH source impeda nce and 33µF electrolytic capacitor (500 mA/div ,2us/div) Figure 12: Input reflected ripple current, i s , through a 12µH source inductor at nominal in put [...]

  • Page 7

    DS_E48SR15004_052 22008 7 ELECTRICAL CHARACTERISTICS CUR VES Figure 14: Output voltage ripple at nominal input voltage and rated load current (Io=4A)(50 mV/div , 2us/div) Load capacitance: 1µF ceramic capacitor and 10µF t antalum capacitor . Ban dwidth: 20 MHz. Sco p e measurement shoul d be made using a BNC cab le (length shorter than 20 inc hes[...]

  • Page 8

    DS_E48SR15004_052 22008 8 DESIGN CONSIDERA TIONS Input Source Impedance The impedance of the input sou rce connecting to the DC/DC powe r modules will intera ct with the modules and affect the st ability . A low ac-impedance input source is recommended. If the source induct ance is more than a few μ H, we advise adding a 10 to 100 μ F electrolyti[...]

  • Page 9

    DS_E48SR15004_052 22008 9 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 down (hiccup mode). The modules w[...]

  • Page 10

    DS_E48SR15004_052 22008 10 FEA TURES DESCRIPTIONS (CON.) Output V oltage Adjustment (TRIM) To increase or decrease the output voltage set point, the modules may be connected with an external resistor between the TRIM pin and either the SENSE(+) or SENSE(-). The TRIM pin should be left open if this feature is not used. Figure 18: Circuit configurati[...]

  • Page 11

    DS_E48SR15004_052 22008 11 THERMAL CONSIDERA TI ONS Thermal management is an importa nt part of the system design. To ensure prop er, reliable operation, suffici ent 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 equipme[...]

  • Page 12

    DS_E48SR15004_052 22008 12 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 - MOUNT T APE & REEL RECOMMENDED P AD LA YOUT (SMD)[...]

  • Page 13

    DS_E48SR15004_052 22008 13 LEADED (Sn/Pb) PROCESS RECOMMEND TEMP . PROFILE T i me ( 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. Cooling down rate < 3 °[...]

  • Page 14

    DS_E48SR15004_052 22008 14 MECHANICAL DRA WING Surface-mount module Through-hole module Pin No. Name Function 1 2 3 4 5 6 7 8 +Vin ON/OFF -Vin -V out -SENSE TRIM +SENSE +V out Positive input voltage Remote ON/OFF Negative input voltage Negative output voltage Negative remote sense Output voltage trim Positive remote sense Positive output voltage[...]

  • Page 15

    DS_E48SR15004_052 22008 15 P ART NUMBERING SYSTEM E 48 S R 150 04 N R F A T ype of Product Input V olt age Number of Output s Product Series Output V olt age Output Current ON/OFF Logic Pin Length Option Code E- Eighth Brick 48V S- Single Feature 150-15V 04-4A N- Negative (Default) P- Positive R - 0.170” (Default) N - 0.145” K - 0.1 10” M - S[...]