Part Number:UCC28070A
Hi, team.
I'm the one who previously asked the following question.
https://e2e.ti.com/support/power_management/isolated_controllers/f/188/t/633244
Since we don’t contact on the way, I will post again.
Can you tell me about the following?
＜Question＞
Please tell me a little more about below question.
First Question
How to determine the C value of the CT reset circuit
Please tell me about the method of determining "Crr" constant in Fig. 1 of document No. JAJA216.
※There is description of calculation method of Rr, but Crr calculation method can not be found
(Crr = 4.7pF in Figure 1, please tell me how to derive this 4.7pF)
First answer
> 1. Crr should be very small, even Crr is short, the CT is still can be reset.
Next question(Currently being question)
How was "Crr = 4.7pF" determined?
※Ｗould like to know as a clue to the setting value at design time.
(Or you decided by "Cut And Try" with a fixed value?)
Could you help me?
Best regards,
Masumi Sekiguchi