Delta Electronics Delphi S24SA Datasheet
Delta Electronics Delphi S24SA Datasheet

Delta Electronics Delphi S24SA Datasheet

Delphi series s24sa, 2”x1” family dc/dc power modules: 18~36vin, 1.8v, 12a out

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Delphi Series S24SA, 2"x1" Family
DC/DC Power Modules: 18~36Vin, 1.8V, 12A out
The Delphi Series S24SA, surface mountable, 24V input, single output,
isolated DC/DC converter is the latest offering from a world leader in
power system and technology and manufacturing -- Delta Electronics, Inc.
This product family provides up to 36 watts of power or up to 12A of
output current (for output voltage 1.8V or below) in a low profile 2"x1"
industry standard form factor and pinout. The S24SA operates from a
wide input range of 18V to 36V, output ranges from 1.2V to 12V. For 1.8V
at 12A full load, the efficiency is up to 87.5%. With creative design
technology and optimization of component placement, these converters
possess outstanding electrical and thermal performance, as well as
extremely high reliability under highly stressful operating conditions. All
models are protected from abnormal input/output voltage and current
conditions, and feature 2250V input/output isolation and basic insulation.
DATASHEET
DS_S24SA1R812_05092006
FEATURES
High efficiency: 87.5% @ 1.8V/ 12A
Size: 47.2mm x 29.5mm x 8.5mm
(1.86" x 1.16" x 0.33")
Low profile: 0.33"
Industry standard footprint and pin out
Surface mountable
Fixed frequency operation
Input UVLO, Output OCP, OVP, OTP
No minimum load required
2:1 input voltage range
Basic insulation
2250 isolation
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950 (US & Canada) recognized,
and TUV (EN60950) certified
OPTIONS
Positive on/off logic
SMD or Through hole mounting
APPLICATIONS
Telecom/DataCom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
Delta Electronics, Inc.

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Summary of Contents for Delta Electronics Delphi S24SA

  • Page 1 This product family provides up to 36 watts of power or up to 12A of output current (for output voltage 1.8V or below) in a low profile 2”x1” industry standard form factor and pinout. The S24SA operates from a wide input range of 18V to 36V, output ranges from 1.2V to 12V. For 1.8V at 12A full load, the efficiency is up to 87.5%.
  • Page 2: Technical Specifications

    TECHNICAL SPECIFICATIONS =25°C, airflow rate=200 LFM, V PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous Operating Temperature Storage Temperature Input/Output Isolation Voltage INPUT CHARACTERISTICS Operating Input Voltage Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Hysteresis Voltage Maximum Input Current No-Load Input Current Off Converter Input Current Inrush Current(I...
  • Page 3 ELECTRICAL CHARACTERISTICS CURVES 18Vin 24Vin Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25 ° 1.60 Io=12A 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00 Figure 3: Typical input characteristics at room temperature. DS_S24SA1R812_05092006 36Vin OUTPUT CURRENT (A) Figure 2: Power dissipation vs.
  • Page 4 ELECTRICAL CHARACTERISTICS CURVES Turn-on transient at zero load current (2 ms/div). Top Figure5 Trace: Vout (1mV/div); Bottom Trace: ON/OFF Control (5V/div). Output voltage response to step-change in load Figure 7 current (75%-50% of Io, max; di/dt = 0.1A/µs). Load cap: Ω...
  • Page 5 ELECTRICAL CHARACTERISTICS CURVES Input Reflected Ripple Current, i s , at full rated output Figure 9 current and nominal input voltage with 12 and 100 F electrolytic capacitor (2 mA/div). µ Figure 11: Output voltage ripple at nominal input voltage and rated load current (10 mV/div).
  • Page 6: Design Considerations

    DESIGN CONSIDERATIONS Input Source Impedance The impedance of the input source connecting to the DC/DC power modules will interact with the modules and affect the stability. A low ac-impedance input source is recommended. If the source inductance is more than a few µH, we advise adding a 10 to 100 µF electrolytic capacitor (ESR <...
  • Page 7: Features Descriptions

    FEATURES DESCRIPTIONS Over-Current Protection The modules include an internal output over-current protection circuit, which will endure current limiting for an unlimited duration during output overload. If the output current exceeds the OCP set point, the modules will automatically shut down (hiccup mode). The modules will try to restart after shutdown.
  • Page 8 FEATURES DESCRIPTIONS (CON.) utput Voltage Adjustment (TRIM) o increase or decrease the output voltage set point, the modules may be connected with an external resistor between the TRIM pin and either the Vo+ or Vo -. The TRIM pin should be left open if this feature is not used. Figure 15: Circuit configuration for trim-down (decrease output voltage) the external resistor is connected between the TRIM...
  • Page 9: Thermal Considerations

    THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temperature range of the module. Convection cooling is usually the dominant mode of heat transfer. Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel.
  • Page 10 PICK AND PLACE LOCATION SURFACE-MOUNT TAPE & REEL RECOMMENDED PAD LAYOUT (SMD) DS_S24SA1R812_05092006...
  • Page 11 140~180°C 60~120 sec. Ramp-up temp. 0.5~3.0°C /sec. Time ( sec. ) Note: The temperature refers to the pin of S24SA, measured on the pin +Vout joint. LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE Temp Peak Temp. 240 ~ 245 ℃...
  • Page 12: Mechanical Drawing

    MECHANICAL DRAWING Surface-mount module Pin No. Name +Vout -Vout Trim ON/OFF -Vin +Vin Optional Pin Name +Sense (Option) -Sense (Option) DS_S24SA1R812_05092006 Through-hole module Function Positive output voltage Negative output voltage Output voltage trim ON/OFF logic Negative input voltage Positive input voltage Function Positive sense pin Negative sense pin...
  • Page 13: Part Numbering System

    PART NUMBERING SYSTEM Form Input Number of Factor Voltage Outputs S- Small S- Single Power MODEL LIST MODEL NAME S24SA1R212NRFA S24SA1R512NRFA S24SA1R812NRFA S24SA2R510NRFA S24SA3R310NRFA S24SA05006NRFA S24SA12003NRFA CONTACT: www.delta.com.tw/dcdc USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: DCDC@delta-corp.com...

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