All,
When the selected timer capacitance is very close to the target timer capacitance, we get a Tfault very close to the target fault timer value. Would it be prudent to increase the selected timer capacitor beyond the next standard value; as per below instead of 22 pF go to 27pF, to account for parts tolerance etc, or is there enough margin already built into the target timer capacitance.
Thanks,
Regards,
Joe
|
|
Target Fault Timer: Tstart + Margin |
1.12 |
ms |
|
|
Target Timer capacitance |
21.48 |
nF |
|
|
Selected Timer capacitance |
22 |
nF |
|
|
Final Fault Timer(Tfault) |
1.14 |
ms |
