LM5146-Q1: Limitation on output current capability of LM5146-Q1 chip

Part Number: LM5146-Q1

1: I saw the output current capability technical parameters of LM5146-Q1 as 20A/30A on TI's official website. What parameter limit of the chip does this output current capability limit depend on? Or is it considered the external MOS, inductor, capacitor and other limitations? Can you give us a detailed answer (for example, 48V input, 12V output requirement) 2: If the maximum output current we need is 40A, does this chip support it? And what is the load current response time from 100mA to 40A, and from 40A to 100mA?