trying to design a supply from for USB-PD to 5V at 20W
so input to a DCDC could be 5V, 9V, 15V or 20V and output must be 5V
however, the TPS54531 requires that VOUT <= 0.75 * VIN
is there a recommended solution to bypass the DCDC at VIN = VOUT or an alternative part that includes a bypass?