ADM1272 ESTART pin & EFAULT pin circuit part value calculation

Hello, Analog Devices' support team,

I have some questions about ADM1272.

1. The ADM1272 ESTART pin & EFAULT pin circuit as below picture1. How do I calculate the peripheral circuit of ESTART pin and EFAULT pin? The R1, R2 and C1 for ESTART. R3, R4 and C2 for EFAULT. Does ADI have a calculation tool to calculate this portion?

2. As below picture2. How to calculate the tPOWER-UP time period.