Delta-electronics DNM User Manual

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 out

For DNM12xx and DNL12xx series ()7525.00667.07.0−×−= VoutVtrim V For example, to program the output voltage of a DNL12S module to 3.3 Vdc, Vtrim is

11 8.2.6 Voltage Tracking The DNM/DNL family was designed for applications that have output voltage tracking requirements during power-up and powe

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

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

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

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.

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

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

4. Connect a scope probe from channel 1 between the on/off control pin and referenceground (SGND) on the Evaluation Board. 5. Set channel 2 on the

Appendix A- Evaluation Board Schematic 19

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

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

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

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

5 5) SW2 is used to enable or disable the converter. For positive logic module, When SW2 is pose for the ON position, the converter is ON, and SW2

6 8.0 Tests and Evaluation 8.1 Input Characteristics 8.1.1 Input Voltage Range and Under-Voltage Lockout The DNM04xx and DNL04xx Series of DC/D

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

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

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