Hi Peter, Thank you. Yes, you are correct. The signal you highlighted is used by ADC module for measuring filtered IL feedback. I have another question that needs your help. I got an application report about a BUCK converter from TI, and the link is below. Designing a TMS320F280x Based Digitally Controlled DC-DC Switching Power Supply (ti.com) https://www.ti.com/lit/an/spraab3/spraab3.pdf?ts=1716282132165 I can understand the small signal power stage model of the buck converter in s-domain described on page 4, but how is the Gc1(s) derived on page 5? Could you please give me detailed steps as to how this transfer function is derived? Thank you and I'm looking forward to hearing from you. Best Regards, Power
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