Delta Electronics 33W Family manual

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Table of contents for the manual

  • Page 1

    DA T ASHEET DS_S48SA1R812_06 012006 Delta Electronics, Inc. Delphi Series S48SA, 33W Family DC/DC Power Modules: 48V in, 1.8V/12A out The Delphi Series S48SA, surface mountable, 48V input, single output, isolated DC/DC converter is the latest offeri ng from a world leader in power system and technology and manu facturing – Delta Electronics, Inc.[...]

  • Page 2

    DS_S48SA1R812_06012 006 TECHNICAL SPECIFICATIONS (T A =25°C, airflow rate=300 LFM, V in =48Vdc, nominal Vou t unless otherwise noted.) PARAMETER NOTES and CONDITIONS S48SA1R812NRFA Min. Ty p. Max. Units ABSOLUTE MAXIMUM RA TINGS Input Voltage Continuous 80 Vdc Transient (100ms) 100ms 100 Vdc Operating Temperature Refer to Figure 18 for measuring p[...]

  • Page 3

    DS_S48SA1R812_06012 006 ELECTRICAL CHARACTERISTICS CURVES 55 60 65 70 75 80 85 90 95 12 345 67 89 1 0 1 1 1 2 O U TPU T C U R R E N T (A ) E FFICIE NCY ( % ) 36Vin 48Vin 75Vin 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 123456 789 1 0 1 1 1 2 O UT PUT CU RRE NT (A ) P O WE R DIS S IP A TIO N ( W) 36Vin 48Vin 75Vin Figure 1: Efficiency vs. load curr ent for[...]

  • Page 4

    DS_S48SA1R812_06012 006 4 ELECTRICAL CHARACTERISTICS CURVES Figure5 : Turn-on transie nt at zero load current (1 ms/div). Top Trace: Vout (500mV/div); Bottom Trace: ON/OFF Control (5V/div). Figure 6: Output voltage response to step-change in load current (50%-75% of Io, max; di/dt = 0.1A/ µs). Load cap: 10µF, 100 m Ω  ESR tantalum capacitor [...]

  • Page 5

    DS_S48SA1R812_06012 006 ELECTRICAL CHARACTERISTICS CURVES Strip Copper Vo(-) Vo(+) 10u 1u SCOPE RESISTIV E LOAD Figure 9 : Input Reflected Ripple Current, i s , at full rated output current and nominal i nput voltage with 12 µ H source impedance and 33 µ F electrolytic capacito r (2 mA/div). Figure 10: Output voltage noise and ri pple measurem en[...]

  • Page 6

    DS_S48SA1R812_06012 006 This power module is not internally fused. To a chieve optimum safety and system protection, an input line fuse is highly recommended. T he safety agencies require a normal-blow fuse with 3A maximum rating to be installed in the ungrounded le ad. A lower rated fuse can be used based on the maximum inru sh transient energy an[...]

  • Page 7

    DS_S48SA1R812_06012 006 Vo(+) Vi(+) Vo(-) Sense(-) Sense(+) Vi(-) ON/OFF Figure 13: Remote on/off implementation Remote Sense (Optional) Remote sense compensates for voltage drop s on the output by sensing the actual output voltage at the p oint of load. The voltage between the remote sense pins and the output terminals must not exce ed the output [...]

  • Page 8

    DS_S48SA1R812_06012 006 [] ΚΩ − ∆ = − 104 % Vo up − ∆ + 1089 %) 100 ( 8 . 23 Vo Ex. When trim-up +10% (1.8V X 1.1 = 1.98V) Rtrim [] ΚΩ = − = − 9 . 48 104 10 up − + 1089 ) 10 100 ( 8 . 23 are should be taken to ensure th at the maximum utput Voltage Adjustment (TRIM) o increase or decrease the output voltage set point, the Rtri[...]

  • Page 9

    DS_S48SA1R812_06012 006 9 THERMAL CONSIDERATIONS Thermal management is an im porta nt part of the system design. To ensure proper, reliable operation, sufficie nt cooling of the power module is neede d over the entire temperature range of the modul e. Co nvection cooling is usually the dominant mode of heat transfer. Hence, the choice of equipment [...]

  • Page 10

    DS_S48SA1R812_06012 006 10 PICK AND PLACE LOCATION SURFAC E-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD)[...]

  • Page 11

    DS_S48SA1R812_06012 006 Temp . Time 150 ℃ 200 ℃ 100~140 sec. T ime Limited 9 0 sec. above 217 ℃ 217 ℃ Preheat time Ramp up max. 3 ℃ /sec. Ramp down max. 4 ℃ /s ec. Peak Tem p . 240 ~ 245 ℃ 25 ℃ Note: The temperature refers to the pin of S48SA, measured on the pin +Vout joint. 11 LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE T ime ([...]

  • Page 12

    DS_S48SA1R812_06012 006 MECHANICAL DRAWING SMD Through-Hole Pin No. Name Function 1 +Vout Positive output voltage 2 -Vout Negative output voltage 6 Trim Output voltage trim 8 ON/OFF ON/OFF logic 11 -Vin Negative input voltage 12 +Vin Positive input voltage Optional Pin Name Function 4 +Sense (Option) Positive sense pin 5 9 -Sense (Option) NC Negati[...]

  • Page 13

    DS_S48SA1R812_06012 006 14 PART NUMBERING SYSTEM S 48 S A 1R8 12 N R F A* Form Factor Input Voltage Number of Outputs Product Series Output Voltage Output Current ON/OFF Logic Pin Type Option Code S- Small Power 48V S- Single A- Advanced 1R2-1.2V 1R5-1.5V 1R8-1.8V 2R5-2.5V 3R3- 3.3V 050- 5.0V 120- 12V 03- 3.0V 06- 6.6A 10- 10A 12- 12A N- Negative P[...]