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Delta Electronics E48SR12007 manual

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Table of contents for the manual

  • Page 1

    DATASHEET DS_E48SR12007_05 222008 FEATURES  High efficiency: 92.0% @ 12V/7A  Size: 58.4mmx22.80mmx8.4mm (2.30”x0.90”x0.33”)  S tandard footprint  Industry standard pin out  2:1 Input voltage range  Fixed frequency operation  Input UVLO, Output OCP , OVP , OTP  2250V isolation and basic insulation  No minimum load re[...]

  • Page 2

    E48SR12007_0522200 8 2 TECHNICAL SPECIFICA TIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal V out u nless otherwise no ted.) PA R A M E T E R NOTES and CONDITIONS E48SR12007 (St andard) Min. T y p. Max. Un its ABSOLUTE MAXIMUM RA TINGS Input V oltage Continuous 80 Vdc T ransient (100ms) 100ms 100 Vdc Operating T emperature Refer to Fig[...]

  • Page 3

    E48SR12007_0522200 8 3 ELECTRICAL CHARACTERISTICS CUR VES Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C, 300LFM airflow. Figure 2: Power dissipation vs. load current for mini mum, nominal, and max imum input voltage at 25°C, 300LFM airflow . Figure 3: T ypical full l oad input characteristic s at 25[...]

  • Page 4

    E48SR12007_0522200 8 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; Bo ttom 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: V out, 5V/div;[...]

  • Page 5

    E48SR12007_0522200 8 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 a ntalum capacitor and 1µF ceramic capacitor . T op T race: V out (0.2V/div , 200us/div), Bottom T race: Iout (1 A /div). Scope measurement should be made usi ng a [...]

  • Page 6

    E48SR12007_0522200 8 6 ELECTRICAL CHARACTERISTICS CUR VES Figure 12: Input reflected ripple current, i s , through a 12µH source inductor at nominal input voltage an d rated load current (20 mA/div , 2us/div) Figure 13: Output voltage noise and ripple measurement test setup 0 2 4 6 8 10 12 14 01 2 3 45 6 78 9 1 0 L O AD CURRE NT (A ) OUTPUT VOLTAG[...]

  • Page 7

    E48SR12007_0522200 8 7 DESIGN CONSIDERA TIONS Input Source Impedance The impedance of the input source connecting to the DC/DC power module s will interact 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 electrolytic cap[...]

  • Page 8

    E48SR12007_0522200 8 8 FEA TURES DESCRIPTIONS Over-Current Protection The modules include an internal output over-current 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 will [...]

  • Page 9

    E48SR12007_0522200 8 9 FEA TURES DESCRIPTIONS (CON.) Output V oltage Adjustment (TRIM) To increase or decrease t he output voltage set point, the modules may be conne cted with an external resisto r 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 configuratio[...]

  • Page 10

    E48SR12007_0522200 8 10 THERMAL CONSIDERA TIONS 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 equipment t[...]

  • Page 11

    E48SR12007_0522200 8 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 - MOUNT T APE & REEL RECOMMENDED P AD LA YOUT (SMD)[...]

  • Page 12

    E48SR12007_0522200 8 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. Cooling down rate < 3 ° C /[...]

  • Page 13

    E48SR12007_0522200 8 13 MECHANICAL DRA WING (WIT HOUT HEA TSPREADER) 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 Posi[...]

  • Page 14

    E48SR12007_0522200 8 14 MECHANICAL DRA WING (WITH HEA TSPREADER) THROUGH-HOLE MODULE[...]

  • Page 15

    E48SR12007_0522200 8 15 P ART NUMBERING SYSTEM E 48 S R 120 07 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 R- Regular 120-12V 07- 7A N- Negative (Default) P- Positive R - 0.170” (Default) N - 0.145” K - 0.1 10” M - [...]