Delta Electronics manual Delphi DNM and DNL Series of SMT type POL converters, Purpose

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Evaluation Procedure

(DEP-002 A)

The Delphi DNM and DNL Series of SMT type POL converters

The DNM and DNL, 2.4~5.5V or 10~14V input, programmable output, non-isolated point of load DC/DC converters, are the latest offering from one of the world’s largest power supply manufacturers ― Delta Electronics, Inc. The DNM and DNL product family also has a flexible, programmable tracking feature, which provides a variety of startup voltages as well as sequencing and tracking between power modules. 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 possess a myriad of standard protection features.

This document guides the user through the evaluation procedures to qualify a POL module. The data shown in this Evaluation Procedure is for the SMT Package Type POL evaluation board. Please refer to the appropriate data sheet for detailed performance and technical information for the specific POL units.

DNM, DNL SMT Series

1.0 Purpose

This document guides the user in performing electronic measurements on a DNM and DNL POL (point of load) DC/DC converter using the Delta Evaluation Board.

2.0 Relevant Documentation

The documentation and background information listed below is relevant to this evaluation procedure:

2.1Appropriate date sheet for the DNM or DNL Series unit.

2.2Power Module Evaluation Board Schematic.

2.3Power Module Evaluation Board Layout.

2.4General Test and Safety Procedures.

Evaluation Procedure

EP_DNML_SMD_08062004

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Delta Electronics, Inc.

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Contents Purpose Delphi DNM and DNL Series of SMT type POL convertersRelevant Documentation Equipment Set-Up and Description Equipment RequiredThermal Management of the Converter Test Set-Up Tests PerformedSW3 Function table Initial Power UpTest Tests and EvaluationNo Load Input Current Test Load Regulation Output Characteristics Line RegulationOutput Ripple 10500 Vtrim = 0.7 − 0.1698 ⋅ Vout − For DNM04xx and DNL04xx seriesVoltage Margining For DNM12xx and DNL12xx seriesDetailed Description Sequential Implementation Voltage TrackingRatio-Metric Implementation PS1 PS2PS1=5V VrefSimultaneous Implementation PS1=5V PS2=3.3VVref define Test Dynamic Characteristics Output Voltage DeviationTest Turn on the module by using the Enable on/off Test Turn on the module by using the external switchTurn-On Response Time Thermal Characteristic Efficiency Appendix A- Evaluation Board Schematic Warranty
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