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TPS56637: Question for TPS56637 maximum output voltage

Part Number: TPS56637 Hi Experts, From the datasheet of TPS56637, we mentioned the recommended maximum output voltage is 13V as below. We want to know what's the limitation behind this specification? Can you use this device to output 16V from 18V input? If we used the Toff_min to calculate the Dmax, it is around 85% maximum duty cycle: Dmax=Fsw*(1/Fsw-Toff_min) Thanks.

Hi Jacky, it can't support 16V/18V application since the output voltage is limited by some internal compensation net circuits, if over 13V, unstable will happen. not related to the max duty. Yuchang