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Delta Electronics Series E24SR manual

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Table of contents for the manual

  • Page 1

    (2.30” x 0.90” x 0.39”)  SMD and Through-hole versions  Industry standard pin out  2:1 input range  Fixed frequency operation  Input UVLO, Output OTP , OCP , OVP  Basic insulation  2250V isolation  Monotonic startup into normal and pre-biased loads  Output voltage trim ± 10%  No minimum load required  ISO 900[...]

  • Page 2

    DS_E24SR05012_010 32008 2 TECHNICAL SPECIFICA TIONS (T A =25°C, airflow rate=300 LFM, V in = 24 Vdc, nominal V out unless otherw ise noted.) PA R A M E T E R NOTES and CONDITIONS E24SR05012 (St andard) Min. T yp. Max. Un its ABSOLUTE MAXIMUM RA TINGS Input V oltage Continuous 36 Vdc T ransient (100ms) 100ms 50 Vdc Operating T emperature Refer to f[...]

  • Page 3

    DS_E24SR05012_010 32008 3 ELECTRICAL CHARACTERISTICS CUR VES 80 82 84 86 88 90 92 24 68 1 0 1 2 Output C ur r ent ( A ) E ff i ci en cy (%) 1. 0 2. 0 3. 0 4. 0 5. 0 6. 0 7. 0 2468 1 0 O utput C ur r ent ( A ) L o ss (W ) 18Vin 1 2 Figure 1: Ef ficiency vs. load current for minimum, nomi nal, and maximum in put voltage at 25°C Figure 2: Power dissi[...]

  • Page 4

    DS_E24SR05012_010 32008 4 ELECTRICAL CHARACTERISTICS CUR VES For Negative Remote On/Off Logic Figure 4: T urn-on transi ent at full rated load current (resi stive load) (2 ms/div). Vin=24V . T op T race: V out, 2.0V/div; Bottom T race: ON/OFF input, 10V/div Figure 5: T urn-on trans ient at zero load current (2 ms/ div). Vin=24V . T op T race: V out[...]

  • Page 5

    DS_E24SR05012_010 32008 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 . 0 T op T race: Vout (100mV/div , 200us/div ) , Bottom T r ace: Iout (5 A /div). Scope measureme nt should be made u[...]

  • Page 6

    DS_E24SR05012_010 32008 6 ELECTRICAL CHARACTERISTICS CUR VES Strip Copper Vo(-) Vo(+) 10u 1u SCOPE RESISTIV E LOAD Figure 12: Input reflected ripple current, i s , through a 12µH source inductor at nominal input voltage and rated loa d current (20 mA/div , 2us/div) Figure 13: Output voltage noise and ripple measur ement test setup 0. 0 2. 0 4. 0 6[...]

  • Page 7

    DS_E24SR05012_010 32008 7  The input source must be insulated 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 system where the module i[...]

  • Page 8

    DS_E24SR05012_010 32008 8 Vi(-) ON/OFF Vi(+) Vo(-) Trim Vo(+) Sense(-) Sense(-) Vi(-) ON/OFF Vi(+) Vo(-) Trim Vo(+) Sense(-) Sense(-) Figure 16: Remote on/off implementation Remote Sense Remote sense compen sates for voltage dro ps on the output by sensing the actual output volt age at the point of load. The voltage bet ween the remote sense pins a[...]

  • Page 9

    DS_E24SR05012_010 32008 9 FEA TURES DESCRIPTIONS (CON.) Output V oltage Adjustment (TRIM) To increase or decrea se the output voltage set poin t, connect an external re sistor 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 configuration for trim-down (decrea[...]

  • Page 10

    DS_E24SR05012_010 32008 10 THERMAL CONSIDERA TIONS Thermal management is an important part of the syst em design. To ensure p roper, reliable operation, sufficie nt 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 equipmen[...]

  • Page 11

    DS_E24SR05012_010 32008 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

    DS_E24SR05012_010 32008 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

    DS_E24SR05012_010 32008 13 MECHANICAL DRA WING Surface-mount module Through-hole module Pin No. Name Function 1 -Vin Negative input voltage Remote ON/OFF Positive input voltage Positive output voltage Positive remote sense Output voltage trim Negative remote sense Negative output voltage 2 3 4 5 6 ON/OFF +Vin +V out +SENSE TRIM -SENSE -V out 7 8[...]

  • Page 14

    DS_E24SR05012_010 32008 14 P ART NUMBERING SYSTEM E 24 S R 050 12 N R F A T ype of Product Input V oltage Number of Output s Product Series Output V oltage Output Current ON/OFF Logic Pin Length/T ype Option Code E - Eighth Brick 24V S - Single R - Regular 050 - 5.0V 12 - 12A N - Negative (Default) P - Positive R - 0.170” (Default) N - 0.145” K[...]

  • Page 15

    DS_E24SR05012_010 32008 15 at any time, without notice .[...]