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UCC256303: HHC against DFC

Part Number: UCC256303
Other Parts Discussed in Thread: UCC256403

Hi Experts,

UCC256303 Datasheet  www.ti.com/lit/SLUSD49 “7.1 Overview”
It says “In addition, comparing with traditional Direct Frequency Control (DFC), HHC changes the system to a first order system. Therefore, the compensation design is much easier and can achieve higher loop bandwidth.”

Do we have any other documentation which describes the reason and/or helps the design for it?

Best regards,
Hitoshi