Gebruiksaanwijzing /service van het product DNS SIP Series van de fabrikant Delta Electronics
Ga naar pagina of 20
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 of fering from one of the world’s largest power supply manufacturers ― Delta Electronics, Inc.
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 (T ektronix TDS 3034 or equivalent) 4 Channel 300 MHz, equipped with a x1 scope probe, a x10 scope probe, and two BNC cables (length less than 20 inches/500mm) 3.
3 4.1 Connect one lead from the “+” lead of the DC source (S ee Item 3.1) to the “20A” terminal of the first multi-meter DVM1 (See Item 3.3). Then connect one lead from the “Common” of the DVM1 to the “Vin” pin of the Evaluation Board.
4 6.0 T est s Performed The following tests are p erformed at room temperature (+25 ℃ ). 6.1 Input Characteristics Input V oltage Range. Under-V oltage Lockout. No Load Input Current. 6.2 Output Characteristics Line Regulation. Load Regulation.
5 5) SW2 is used to enable or disable the converter . For positive logic module, When SW2 is put in the ON p osition, the converter is ON and when SW2 is put in the OFF position, the converter is OFF . For negative logic module, When SW2 is put in the OFF position, the converter is ON, and when SW2 is put in the ON position, the converter is OFF .
6 8.0 T est s and Evaluation 8.1 Input Characteristics 8.1.1 Input V olt age Range and Under-V olt age Lockout The DNS04xx Series of DC/DC converters will operate at full load from 2.4Vin to 5.5V in for 5Vin (nominal) types. The DNS12xx Series DC/ DC converters will operate at full load from 10Vin to 14V in for 12Vin (nominal) types.
7 8.2 Output Characteristics 8.2.1 Line Regulation Line Regulation Deviation is defined as the change in output volt age caused by varying the input voltage over a specified range while the ou tput load and temperature remain const ant. T est 1) T urn on the fan.
8 8.2.4 Output V olt age Set-point Programming (1) Output V olt age Set-Point Ad justment by external resistor Output V oltage Set-point Programming can be carried out by using the external program resistor connect between TRIM pin to ground to set output volt age set-point from 0.
T able 2. Vo , s e t Rset (k Ω ) 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 2.5 5.009 5.23k//118k 3.3 3.122 3.16k//261k 5.0 1.472 1.5k//78.7k T est 1. Put the resistor to program the desired output voltage set poin t by follow T able 1 and T able 2 for the standard output.
For DNS12xx series () 7525 . 0 0667 . 0 7 . 0 − × − = Vout Vtrim V For example, to program the output voltage of a DNS12 module to 3.3 Vdc, Vtrim is calculated as follows () 53 . 0 7525 . 0 3 . 3 0667 . 0 7 . 0 = − × − = Vtrim V T able 4. : V o,set adjustment range by use of external voltage source.
11 8.2.6 Voltage Tracking The DNS family was designed for applications that have output voltage t racking requirements during power-up and power-down. The devices hav e a TRACK pin to implement three types of tracking method: sequential, ratio-metric and simultaneous.
12 Figure 4: Sequential Power up Figure 5: Sequential Power down Ratio-Metric Implementation Ratio–metric is implemented by the selection of the resistor values of the voltage divider on the TRACK pin. Resistors R1 and R2, in Figure 6 determine the tracking met hod that is implemented.
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=Vo set,PS1 –Vo set,PS2 and △ V will be negative. The waveforms of power up and down are showed in Figures 7 and 8.
14 For example, the PS1 Vo set,PS1 =5V, the PS2 Vo set,PS2 =3.3V, R1 is calculated as follows: K K R 303 . 10 20 * 32 . 1 ] 32 . 1 ) 3 . 1 3 . 3 [( 1 = − − = Ω Figure 9.
15 For type C (DNXXX0A0XXXX C ), th e simultaneous tracking can be accomplished by putting R1 equal to 30.1K Ω through Vo PS1 to the TRACK pin of PS2. Figure 12 shows the circuit diagram of Simultaneous start-up when Vo PS2 tracks the Vo PS1 (only for type C).
16 Notes on the use of Track function: 1. For proper voltage tracking, first, The ENABLE On/Off pin of the PS2 module is lef t unconnected (or tied to GND for negative logic modules or tied to VIN for positive logic modules), so that the modules are ON by default and second applied input voltage to the PS1 and PS2.
T est 1) T urn on the fan. 2) Adjust the input voltage to the desired operating point. 3) Set the electronic or resistive load at 50% of maximum load. 4) Change channel 1 to scope probe and measure across the dynamic R . 5) Set the switch SW2 to the converter ON.
5. Set channel 2 on the oscilloscope to be DC coupled and to the appropriate range for the output voltage. 6. Connect a coaxial cable from channel 2 to BNC2 on the Evaluation Board.
Appendix A- Evaluation Board Schematic 19.
Appendix B - Evaluation Board Layout (Top View) Appendix C - Evaluation Board Layout (Bottom View) CONTACT DATA: www. delt aww.c om USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: DCDC@delta-corp.
Een belangrijk punt na aankoop van elk apparaat Delta Electronics DNS SIP Series (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen Delta Electronics DNS SIP Series heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens Delta Electronics DNS SIP Series vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Delta Electronics DNS SIP Series leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Delta Electronics DNS SIP Series krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van Delta Electronics DNS SIP Series bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Delta Electronics DNS SIP Series kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Delta Electronics DNS SIP Series . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
