Delta Electronics DNL Series manual Vref define

Page 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. Figure 12 shows the circuit diagram of Simultaneous start-up when VoPS2 tracks the VoPS1 (only for type C).

Vin

ENABLE

PS1

Vin

VoPS1

30.1K R1 TRACK

ENABLE

PS2

To Tracking circuit

R2 20K

VoPS2

Figure 12. PS1 and PS2 track output voltage Simultaneous start-up for type C

PS1

PS2

PS1

PS2

Figure 13. Simultaneous Power up

Figure 14. Simultaneous Power down

Table 5. : Vref define

Voset,ps2	Vref

0.7525	0.3

1.2	0.48
1.5	0.6

1.8	0.72

2.5	1.0
3.3	1.32

5.0	2.0	15

Image 15

Contents Delphi DNM and DNL Series of SMT type POL converters PurposeRelevant Documentation Equipment Set-Up and Description Equipment RequiredThermal Management of the Converter Test Set-Up Tests PerformedSW3 Function table Initial Power UpTests and Evaluation TestNo Load Input Current Test Output Characteristics Line Regulation Load 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 external switch Test Turn on the module by using the Enable on/offTurn-On Response Time Thermal Characteristic Efficiency Appendix A- Evaluation Board Schematic Warranty