Tool/software:
Hello TI team,
I have a few question regarding the TPS65145:
Q1: According to the design procedure in the datasheet (Step 2), the zero-point should be designed at 50kHz. After selecting R1, the value of Cff(C5) is determined and cannot be changed. Is this correct?
Q2: What is the basis for designing the zero-point of Cff(C5) at 50kHz?
Q3: After fixing Cff(C5), the external RC at the COMP pin is used to compensate the frequency response and stability of the OPA. The document mentions that Cc adjusts the low-frequency gain and Rc adjusts the high-frequency gain. What is the principle behind this?
Q4: How should Rc and Cc be adjusted? And what is their relationship with Cff?
Thanks for your reply.
