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TPS53353: TPS53353/55 ripple injection calculation

Part Number: TPS53353

Hi TI expert,

I read some TI documents regarding to the calculation of ripple injection, but all documents only show an "equation" or a "result", no calculation process(step by step process), do you guys have a complete document to show the result and calculation process?

What I have read documents are:

1 Application Report SLVA453–February 2011.

2 Constant On-Time DC-DC Converter using Ripple Injection Filter with Inherent Adaptive Voltage Positioning

3 Frequency Domain Analysis of Fixed On-Time with Bottom Detection Control for Buck Converter