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Delta Electronics S24SA manual

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Table of contents for the manual

  • Page 1

    DATASHEET DS _ S24S A 1R812 _ 05092006 Delta Electronics, Inc. Delphi Series S24SA, 2”x1” Family DC/DC Power Modules: 18~36Vin, 1.8V, 12A out The Delphi Series S24SA, surface mou ntable, 24V input, single output, isolated DC/DC converter is the latest offering from a world le ader in power system and technology an d manu facturing -- Delta Elec[...]

  • Page 2

    DS_S24SA1R812_05092 006 TECHNICAL SPECIFICATIONS (T A =25°C, airflow rate=200 LFM, V in =24Vdc, nominal V out unless otherw ise noted.) PARAMETER NOTES and CONDITIONS S24SA1R812NRFA Min. Ty p. Max. Units Units ABSOLUTE MAXIMUM RA TINGS Input Voltage Continuous -0.3 50 Vdc Operating Temperature Please re fer to Fig. 18 For measur ing point -40 110 [...]

  • Page 3

    DS_S24SA1R812_05092 006 ELECTRICAL CHARACTERISTICS CURVES 50 55 60 65 70 75 80 85 90 95 0. 1 2 4 6 8 10 12 O UTP UT CURRE NT (A ) EFFICIENCY (%) 18Vi n 24V in 36V i n 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0.1 2 4 6 8 10 12 O UT PUT CURRE NT (A ) POWER DISSIPATION (W) 18Vi n 24V i n 36V i n Figure 1: Efficiency vs. load curr ent for mi nimum, [...]

  • Page 4

    DS_S24SA1R812_05092 006 4 ELECTRICAL CHARACT ERISTICS CURVES Figure5 : Turn-on transie nt at zero load current (2 ms/div). Top Trace: Vout (1mV/div); Bottom Trace: ON/OFF Control (5V/div). Figure 6: Output voltage response to step-change in l oad current (50%-75% of Io, max; di/dt = 0.1A/ µs). Load cap: 10µF, 100 m Ω  ESR tantalum capacitor [...]

  • Page 5

    DS_S24SA1R812_05092 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 100 µ F electrolytic capacitor (2 mA/div). Figure 10: Output voltage no ise and ri pple measuremen[...]

  • Page 6

    DS_S24SA1R812_05092 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 5A 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_S24SA1R812_05092 006 7 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 outpu[...]

  • Page 8

    DS_S24SA1R812_05092 006 [] ΚΩ − ∆ = − 104 % Vo up Rtrim − ∆ + 1089 %) 100 ( 8 . 23 Vo Ex. When trim-up +10% (1.8V X 1.1 = 1.98V) [ ] ΚΩ = − = − 9 . 48 104 10 up Rtrim − + 1089 ) 10 100 ( 8 . 23 utput Voltage Adjustment (TRIM) o increase or decrease the output voltage set point, the Care should be taken to ensure th at the maxi[...]

  • Page 9

    DS_S24SA1R812_05092 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_S24SA1R812_05092 006 10 PICK AND PLACE LOCATION SURFAC E-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD)[...]

  • Page 11

    DS_S24SA1R812_05092 006 Temp . Time 150 ℃ 200 ℃ 100~140 sec. Time 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 S24SA, measured on the pin +Vout joint. 11 LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE T i me ([...]

  • Page 12

    DS_S24SA1R812_05092 006 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 -Sense (Option) Negative sense pin 12 MECHANICAL DRAWING Surfac[...]

  • Page 13

    DS_S24SA1R812_05092 006 14 PART NUMBERING SYSTEM S 24 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 24V S- Single A- Advanced 1R2-1.2V 1R5-1.5V 1R8-1.8V 2R5-2.5V 3R3- 3.3V 050- 5.0V 120- 12.0V 03- 3.0A 06- 6.6A 10- 10A 12- 12A N- Negative [...]