Delta-electronics DNS SIP Series Uživatelský manuál

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Evaluation Procedure
(DEP-008 A)
The Delphi DNS Series of SIP type
POL converters
The DNS, 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
DNS converters have flexible and programmable
tracking and sequencing features to enable a
variety of startup voltages as well as sequencing
and tracking between power modules. With
creative design technology and optimization o
f
component placement, these converters possess
outstanding electrical and thermal performance,
as well as extremely high reliability under highl
y
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 SIP Package Type POL evaluation board.
Please refer to the appropriate technical data
sheet for detailed performance and technical
information for the specific POL units.
Evaluation Procedure
EP_DNS_SIP_08052004
DNS SIP Series
1.0 Purpose
This document guides the user in performing
electronic measurements on a DNS 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:
2.1 Appropriate date sheet for the DNS Series
unit under evaluation.
2.2 Power Module Evaluation Board Schematic.
2.3 Power Module Evaluation Board Layout.
2.4 General Test and Safety Procedures.
Delta Electronics, Inc.
1
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Shrnutí obsahu

Strany 1 - (DEP-008 A)

Evaluation Procedure (DEP-008 A) The Delphi DNS Series of SIP type POL converters The DNS, 2.4~5.5V or 10~14V input,programmable output, non-isolat

Strany 2 - 3.0 Equipment Required

For DNS12xx series ()7525.00667.07.0−×−= VoutVtrim V For example, to program the output voltage of a DNS12 module to 3.3 Vdc, Vtrim is calculated a

Strany 3

11 8.2.6 Voltage Tracking The DNS family was designed for applications that have output voltage tracking requirements during power-up and power-do

Strany 4 - 7.0 Test Set-Up

12 Figure 4: Sequential Power up Figure 5: Sequential Power down Ratio-Metric Implementation Ratio–metric is implemented by the selection of

Strany 5 - 7.2 Initial Power Up

For Ratio-Metric applications that need the PS1 and PS2 outputs arrive regulation set point at same time, use equation 1 to calculate R1, set △ V=

Strany 6 - 8.0 Tests and Evaluation

14 For example, the PS1 Voset,PS1=5V, the PS2 Voset,PS2=3.3V, R1 is calculated as follows: KKR 303.1020*32.1]32.1)3.13.3[(1 =−−= Ω Figure 9

Strany 7

15 For type C (DNXXX0A0XXXX C), the simultaneous tracking can be accomplished by putting R1 equal to 30.1K Ω through VoPS1 to the TRACK pin of PS2.

Strany 8

16 Notes on the use of Track function: 1. For proper voltage tracking, first, The ENABLE On/Off pin of the PS2 module is leftunconnected (or tied

Strany 9

Test 1) Turn on the fan. 2) Adjust the input voltage to the desired operating point. 3) Set the electronic or resistive load at 50% of maximum l

Strany 10

5. Set channel 2 on the oscilloscope to be DC coupled and to the appropriate range for theoutput voltage. 6. Connect a coaxial cable from channel 2

Strany 11

Appendix A- Evaluation Board Schematic 19

Strany 12

2 3.0 Equipment Required 3.1 A DC Power Supply 0 - 20 V @ 0 - 20A (Agilent 6574A 0 -60V/0 - 35A or equivalent). 3.2 An oscilloscope (Tektronix

Strany 13

Appendix B - Evaluation Board Layout (Top View) Appendix C - Evaluation Board Layout (Bottom View) CONTACT DATA: www.

Strany 14

3 4.1 Connect one lead from the “+” lead of the DC source (See Item 3.1) to the “20A” terminal of the first multi-meter DVM1 (See Item 3.3). Then con

Strany 15

4 6.0 Tests Performed The following tests are performed at room temperature (+25 ℃). 6.1 Input Characteristics  Input Voltage Range.  Under-Vo

Strany 16

5 5) SW2 is used to enable or disable the converter. For positive logic module, When SW2 is put in the ON position, the converter is ON and when S

Strany 17

6 8.0 Tests and Evaluation 8.1 Input Characteristics 8.1.1 Input Voltage Range and Under-Voltage Lockout The DNS04xx Series of DC/DC converters

Strany 18 - EFFICIENCY(%)

7 8.2 Output Characteristics 8.2.1 Line Regulation Line Regulation Deviation is defined as the change in output voltage caused by varying the input

Strany 19

8 8.2.4 Output Voltage Set-point Programming (1) Output Voltage Set-Point Adjustment by external resistor Output Voltage Set-point Programming can

Strany 20 - Warranty

Table 2. Vo,set Rset (kΩ) R33 Recommend Value, R//R 0.7525 Open Open 1.2 22.464 23.7k//432k 1.5 13.047 14.0k//191k 1.8 9.024 9.53k//169k 2

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