Delta Electronics Delphi S48SS Series Evaluation Manual
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Delta Electronics Delphi S48SS Series Evaluation Manual

Delta Electronics Delphi S48SS Series Evaluation Manual

Evaluation procedure delphi series
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Evaluation Procedure
Delta Delphi Series 48Vin
S48SR and S48SS
The Delphi Series S48SR and S48SS,
48V input, single output, isolated DC/DC
converters are the latest offering from one
of the world's largest power supply
manufacturers ― Delta Electronics, Inc.
With creative design technology and
optimization of component
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
encapsulated version is available for the
most
robust
environments.
This document guides the user through the
evaluation procedures to qualify a Delphi
module. The data shown in this Evaluation
Procedure is for the 3.3V unit. Please refer
to the appropriate technical data sheet for
detailed
performance
information for Delphi units with different
output voltages.
Evaluation Procedure
EP_SP
Version X1.0
November 2002
placement,
conditions.
performance
in
harsh
and
technical
Delphi Series S48SR and S48SS
1.0 Purpose
This document guides the user to perform
electronic
An
S48SR, 15W or a S48SS, 15W DC/DC
converter using the Delta Evaluation Board.
2.0 Relevant Documentation
The document and general knowledge listed
below is relevant to this evaluation
procedure:
2.1 S48SR or S48SS Series Applicable
Data Sheet
2.2 2"×1" Power Module Evaluation Board
Schematic
2.3 2"×1" Power Module Evaluation Board
Layout
2.4 General Test and Safety Procedures
2.5 ESD Protection
1
measurements
on
Delta Electronics, Inc.
a
Delphi

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Summary of Contents for Delta Electronics Delphi S48SS Series

  • Page 1 1.0 Purpose This document guides the user to perform electronic conditions. S48SR, 15W or a S48SS, 15W DC/DC converter using the Delta Evaluation Board. harsh 2.0 Relevant Documentation The document and general knowledge listed below is relevant to this evaluation procedure: 2.1 S48SR or S48SS Series Applicable...

  • Page 2: Equipment Required

    300W Electronic or Resistive Load (Chroma 6304) 4.0 Equipment Set-Up and Description 4.1 Connect one wire from the “+” lead of the Power Supply (Item 3.1) to the “10A” of the DVM1 (Item 3.4). Then connect one wire from the “Common” of the DVM1 to the “Vin +”...

  • Page 3: Tests Performed

    The following tests are performed at room temperature +25 C. 6.1 Input Characteristics Input Voltage Range Under Voltage Lockout No Load Input Current Disable Input Current (applies to S48SS version only) 6.2 Output Characteristics Line Regulation Load Regulation Output Regulation Output Overvoltage Protection 6.3 Dynamic Characteristics...
  • Page 4 1) Turn the Power Supply on and increase the input voltage (use DVM2 to monitor the voltage) until it reaches 48V (or the desired value). 2) Toggle SW1 to the appropriate logic position to turn the power module on (S48SS only).
  • Page 5 Test 1) Turn on the fan. 2) Set the enable switch SW1 to the appropriate logic enable position (S48SS only). 3) Set the input voltage to desired operating point while monitoring DVM2. 4) Remove the electronic or the resistive load (output load) 5) Note the input current from DVM1.

  • Page 6: Output Characteristic

    Test 1) Turn on the fan. 2) Set the enable switch SW1 to the appropriate logic enable position (S48SS only). 3) Set the output power to the desired operating point. 4) Adjust the input voltage across the converter’s input range (36 to 75 volts) while monitoring DVM3.

  • Page 7: Dynamic Characteristics

    1) Turn on the fan. 2) Set the enable switch SW1 to the appropriate logic enable position. 3) Adjust the input voltage and output load to the desired operating point (S48SS only). 4) Adjust Channel 2 on the oscilloscope to be AC coupled @ 2uS / Div and 50mV/Div to use the 20 MHz bandwidth of the scope.
  • Page 8 Test -S48SR & S48SS ( turn on the module by using the input power supply) 1) Turn on the fan. 2) Set the enable switch SW1 to the appropriate logic enable position (S48SS only).

  • Page 9: Thermal Characteristics

    Test 1) Turn on the fan. 2) Set the enable switch SW1 to the appropriate logic enable position (S48SS only). 3) Adjust the input voltage to the desired operation point. 4) Set the Electronic Load to the desired operating point..

  • Page 10: Appendix A- Evaluation Board Schematic

    7) Use the following formulas to calculate the efficiency: Efficiency= (Pout/Pin) × 100(%) Pin = Iin × Vin Pout = Iout × Vout The following graph shows the efficiency results of the S48SS/S48SR converters measured at different operating points. Appendix A- Evaluation Board Schematic SVin+...

  • Page 11: Appendix B - Evaluation Board Layout (Top View)

    Appendix B - Evaluation Board Layout (Top View)

  • Page 12: Appendix C- Evaluation Board Layout (Bottom View)

    Appendix C- Evaluation Board Layout (Bottom View) CONTACT DATA: www.deltaww.com USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: DCDC@delta-corp.com Warranty Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon request from Delta.

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