For DCAP2 use TPS54627 but it is 2% accuracy
For current mode control TPS54618 or TPS54678 is 1% accuracy.
For voltage mode contrl TPS54610 is bettr than 1% accuracy. It is specified at 1% but the actual characterization data was 0.75% if I remember correctly.
There may be others as well but this will give you a place to start.