1. fs
COT: CCM=Vout/(VinxTon) , DCM= 2LxVoutxIo/[TonxTonxVinx(Vout-Vin)]
PCM: constant frequency
refer: Ripple-Based Control of Switching Regulators_An Overview
2. Subharmonic
COT: NO (no slope compensation)
PCM: Yes
refer: Current-Mode Control:Modeling and its Digital Application, Jian Li
3. Cout
COT: RcxCout > Ton/2 (Stability)
PCM: NO ESR limitaion (Stability is dependent on compensator design)
refer: Ripple-Based Control of Switching Regulators_An Overview
4. Compensator
COT: Yes or NO (depend on cost)
PCM: Yes
refer: Ripple-Based Control of Switching Regulators_An Overview