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
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 |
|
| |
|
|
