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TPS65150-Q1 application questions

Other Parts Discussed in Thread: TPS65150-Q1, TPS65150

Hola,

We want to design TPS65150-Q1 in new project and have some questions were listed as below:

1. Which package of HTSSOP and VQFN that can make better performance if these two package are all fit out mechanical?

2. In datasheet of page-13 of equation-2 that I want to calculate switch current:

Where:

1. According to equation-1 and I got the duty cycle D=0.785(Vi=3.3V、Vo=11.5V、n=0.75)

2. L=3.9uH

3. Output current Io=0.9A

then I got the Isw is 4.463A, but it is exceeds the maximum current limit 3.4A which shown in datasheet page-5:

3. The switching diode which used in typical application circuit that you used schottky diode, is this for improve efficiency?

4. How can I calculate the Ccomp & Rcomp?Does it has a formula can be calculate?

Brs