Hello Ryan-san,
Thank you for your reply.
Customer want to use TWP=10ms.
Q1: Question about TWP equation
I calculate CWP as follows according to the equation “TWP(ms)=25 x CWP(nF)“ to set TWP=10ms.
CWP(nF)=TWP(ms)/25=10ms/25=0.4nF
According to the internal block diagram of datasheet, CWP is charged by 400nA current source and compare with 1.235V.
Calculated CWP voltage at 10ms is 10V as follows. 10V is around 10 times of 1.235V threshold and it does not much with 1.235V.
Vcwp=I*t/C=400nA*10ms/0.4nF=10V
Please confirm if datasheet equation of CWP is correct.
Q2: Question about TWP=10ms
Pleas verify if TWP=10ms setting is acceptable by 13th Sep and advice your view.
Best Regards.