Delta Electronics Series L36SA manual

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Table of contents for the manual

  • Page 1

    FEATURES  High Efficiency: 88% @ 3.3V/15A  Size: 49.6mm x 39.4mm x 8.9mm (1.95”x1.55”x0.35”)  Industry standard pin out  Fixed frequency operation  Input UVLO, OTP , Output OCP , OVP , (auto recovery)  Monotonic startup into normal and pre-biased loads  2250V isolation and basic insulation  No minimum load required [...]

  • Page 2

    TECHNICAL SPECIFICA TIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal V ou t unless otherwise no ted.) PA R A M E T E R NOTES and CONDITIONS L36SA3R315 (St andard) Min. T yp . Max. Un its ABSOLUTE MAXIMUM RA TINGS Input V oltage Continuous 80 Vdc Maximum input voltage 100 Vdc Operating T emperature Refer to Figure21 for measuring point [...]

  • Page 3

    ELECTRICAL CHARACTERISTICS CUR VES 60 70 80 90 123456789 1 0 1 1 1 2 1 3 1 4 1 5 OUTPUT CURRENT (A) EFFICIENCY (%) 1 2 3 4 5 6 7 8 9 123456 7 89 1 0 1 1 1 2 1 3 1 4 1 5 OUTPUT CUR RENT (A) LOSS (W) 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 min imu[...]

  • Page 4

    ELECTRICAL CHARACTERISTICS CUR VES For Negative Remote On/Off Logic Figure 4: T urn-on transient a t full rated load current (resistive load) (5 ms/div). V in=48V .T op T race: V out, 1V/div; Bottom T race: ON/OFF input, 5V/div Figure 5: T urn-on trans ient at zero load current (5 ms/ div). Vin=48V .T op T race: Vout, 1V/div; Bottom T race: ON/OFF [...]

  • Page 5

    ELECTRICAL CHARACTERISTICS CUR VES 0 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 , tantalum capacitor and 1µF ceramic capacitor . T op T race: V out (1 00mV/div , 200us/div), Bottom T race: I out (3.75 A /div). Scope measurement shoul d be made using a BNC ca ble (len[...]

  • Page 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 w ith 12µH source impedance and 33µF electrolytic capacitor (500 mA/div , 2us/div). Figure 1 2: Input reflected ripple current, i s , through a 12µH source inductor at nominal input vo ltage and rated l oad[...]

  • Page 7

    ELECTRICAL CHARACTERISTICS CUR VES output current range 0 0.5 1 1.5 2 2.5 3 3.5 0 5 10 15 20 Output current (A) Output voltage (V) Figure 14: Output voltage ripple at nominal input voltage and rated load current (Io=10A)(10 mV/div , 2us/div) Load capacitance: 1µF ceramic capacitor and 10µF t antalum capacitor . Bandwid th: 20 MHz. Scope measureme[...]

  • Page 8

     The input source must be insul ated from the ac mains by reinforced or double insulation.  The input terminals of the module are not operator accessible.  If the metal baseplate is grounded , one Vi pin and one Vo pin shall also be grounded.  A SELV reliability test is conducted on the syste m where the module is used , in combinati on[...]

  • Page 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 will try to restart after s[...]

  • Page 10

    FEA TURES DESCRIPTIONS (CON.) Output V oltage Adjustment (TRIM) To increase or decrea se the output voltage set poin t, the modules may be connected wit h an external resistor betwee n 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 configuration for trim-down (decre[...]

  • Page 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 equipment to chara cterize the the[...]

  • Page 12

    MECHANICAL DRA WING OPEN FRAME VERSION PIN NO. NAME FUNCTION 1 CASE (OPTION) CASE 2 +VIN POSITIVE INPUT VOL T AGE 3 –VIN NEGA TIVE INPUT VOL T AGE 4 NC NOT CONNECTED 5 ON/OFF REMOTE ON/OFF 6 TRIM OUTPUT VOL T AGE TRIM 7 –SENSE (OPTION) NEGA TIVE OUTPUT VOL T AGE SENSE 8 –VOUT NEGA TIVE OUTPUT VOL T AGE 9 +VOUT POSITVE OUTPUT VOL T AGE 10 +SEN[...]

  • Page 13

    DS_L36SA3R315_02142 007 13 P ART NUMBERING SYSTEM L 36 S A 3R3 15 N R F A T ype of Product Inpu t V olt age Number of Output s Product Series Output V olt age Output Current ON/OFF Logic Pin Length Option Code L- 2 x 1.6 Brick 18~75V S- Single Advanced 3R3-3.3V 15-15A N-Negative P-Positive R-0.170” F- RoHS 6/6 (Lead Free) A-S tandard Functions B-[...]