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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 offering from a world
leader in power system and technology and manufacturing – Delta
Electronics, Inc. This product family provides up to 33 watts of power
or up to 12A of output current (for output voltage 1.8V or below). With
creative
design
technology
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.
DATASHEET
DS_S48SA1R812_06012006
and
optimization
of
component
FEATURES
High efficiency: 88.5% @ 1.8V/ 12A
Size: 47.2mm x 29.5mm x 8.35mm
(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
No minimum load required
2:1 input voltage range
Basic insulation
ISO 9001, TL 9000, ISO 14001,
QS9000, OHSAS18001 certified
manufacturing facility
UL/cUL 60950 (US & Canada)
recognized, and TUV (EN60950) certified
CE mark meets 73/23/EEC and
93/68/EEC directive
OPTIONS
Positive on/off logic
Through hole version
APPLICATIONS
Telecom/DataCom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
Delta Electronics, Inc.
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Table of Contents
Related Manuals for Delta Electronics 33W Family
Summary of Contents for Delta Electronics 33W Family
- Page 1 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 offering from a world leader in power system and technology and manufacturing – Delta Electronics, Inc.
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Page 2: Technical Specifications
TECHNICAL SPECIFICATIONS =25°C, airflow rate=300 LFM, V PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous Transient (100ms) 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... - Page 3 ELECTRICAL CHARACTERISTICS CURVES Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25 ° Figure 3: Typical input characteristics at room temperature. DS_S48SA1R812_06012006 36Vin 48Vin 75Vin 11 12 OUTPUT CURRENT (A) Figure 2: Power dissipation vs. load current for minimum, nominal, and maximum input voltage at 25 Io=12A Io=7.2A...
- Page 4 ELECTRICAL CHARACTERISTICS CURVES Turn-on transient at zero load current (1 ms/div). Top Figure5 Trace: Vout (500mV/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 33 F electrolytic capacitor (2 mA/div). µ Figure 11: Output voltage ripple at nominal input voltage and rated load current (20 mV/div).
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Page 6: Design Consideration
DESIGN CONSIDERATION 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 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...
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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_S48SA1R812_06012006...
- Page 11 LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE 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 S48SA, measured on the pin +Vout joint. LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE Temp Peak Temp.
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Page 12: Mechanical Drawing
MECHANICAL DRAWING Pin No. Name +Vout -Vout Trim ON/OFF -Vin +Vin Optional Pin Name +Sense (Option) -Sense (Option) DS_S48SA1R812_06012006 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 No connection Through-Hole... -
Page 13: Part Numbering System
PART NUMBERING SYSTEM Form Input Number of Factor Voltage Outputs S- Small S- Single Power * Option code A includes 9 pins. Pins 4, 5, and 9 have no connection Option code B excludes pin 4, 5 Option code C features 9 pins with sense function. MODEL LIST MODEL NAME S48SA1R212NRFA...
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