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Delta Electronics Series E48SR - page 1
DA TASH EET DS_E48SR05012_05222008 FEATURES High Efficiency: 91.5% @ 5.0V/12A Size: 58.4mmx22.80mmx8.4mm (2.30”x0.90”x0.33”) S tandard footprint Industry standard pin out Fixed frequency operation: 35 0KHz Input UVLO, Output OCP , OVP , OTP 1500V isolation Basic insulation No minimum load required 2:1 I ...
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Delta Electronics Series E48SR - page 2
DS_E48SR05012_052 22008 2 TECHNICAL SPECIFICA TIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal V out unless otherwise no ted.) PA R A M E T E R NOTES and CONDITIONS E48SR05012 (St andard) Min. T yp . Max. Un its ABSOLUTE MAXIMUM RA TINGS Input V oltage Continuous 75 Vdc T ransient (100ms) 100ms 100 Vdc Operating T emperature Refer to F ...
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Delta Electronics Series E48SR - page 3
DS_E48SR05012_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 min imum, nominal, and max imum input voltage at 25°C. Figure 3: T ypical full l oad input characteristics at room temperature ...
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Delta Electronics Series E48SR - page 4
DS_E48SR05012_052 22008 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) (2 ms/div). V in=48V .T op T race: V out, 2V/div; Bottom T race: ON/OFF input, 5V/div Figure 5: T urn-on transient at zero load current (2 ms/ div). Vin=48V .T op T race: Vout, 2V/di ...
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Delta Electronics Series E48SR - page 5
DS_E48SR05012_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 , tantalum capacitor and 1µF ceramic capacitor . T op T race: V out (10 0mV/div , 200us/div), Bottom T race: I out (5 A /div). Scope measurement shoul d be made us ...
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Delta Electronics Series E48SR - page 6
DS_E48SR05012_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 input ...
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Delta Electronics Series E48SR - page 7
DS_E48SR05012_052 22008 7 ELECTRICAL CHARACTERISTICS CUR VES Figure 14: Output voltage ripple at nominal input voltage and rated load current (Io=12A)(20 mV/div , 2us/div) Load capacitance: 1µF ceramic capacitor and 10µF t antalum capacitor . Ban dwidth: 20 MHz. Scope measurements should be made using a BNC cab le (length shorter than 20 inc hes) ...
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Delta Electronics Series E48SR - page 8
DS_E48SR05012_052 22008 8 The input source must be insulated f rom 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 ...
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Delta Electronics Series E48SR - page 9
DS_E48SR05012_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 ...
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Delta Electronics Series E48SR - page 10
DS_E48SR05012_052 22008 10 FEA TURES DESCRIPTIONS (CON.) Output V oltage Adjustment (TRIM) To increase or decrea se the output voltage set poi nt, 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 configu ...
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Delta Electronics Series E48SR - page 11
DS_E48SR05012_052 22008 11 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 equipmen ...
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Delta Electronics Series E48SR - page 12
DS_E48SR05012_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) ...
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Delta Electronics Series E48SR - page 13
DS_E48SR05012_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 ° ...
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Delta Electronics Series E48SR - page 14
DS_E48SR05012_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 ...
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Delta Electronics Series E48SR - page 15
DS_E48SR05012_052 22008 15 P ART NUMBERING SYSTEM E 48 S R 050 12 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/T ype Option Code E- Eighth Brick 48V S- Single R- Regular 050- 5.0V 12-12A N- Negative (Default) P- Positive R - 0.170” (Default) N- 0.145” K- 0.1 1 ...
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