TMS320F280025: Specific application problems of chip

Hi Tony,

I'd suggest you review the Hardware Design Guide for F2800x guide, https://www.ti.com/spracz9, as it addresses many HW considerations you should make.

Tonyx.wu said:

(1) whether the matching of all power capacitors is reasonable.

Decoupling caps look OK to me.

Tonyx.wu said:

(2) Configure pin 4 as the input positive of cmpss and as overcurrent protection. Use internal DAC to set the overcurrent protection threshold. Is this reasonable.

Not certain off the top of my head and will need to check.

Tonyx.wu said:

(3) Whether the 23 and 24 pins are configured as can communication pins is reasonable.

Pins 23 and 24 are GPIOs 12 and 13 for the 48-pin package, so this is OK. Looks like your sch symbol is incorrect.

Tonyx.wu said:

(4) Whether the use of crystal oscillator and the setting of writing port are reasonable.

Crystal circuit looks OK to me. Not sure what you're meaning about the "writing port".

Tonyx.wu said:

(5) Whether the input and output of pin 1 and 2 configured as Lin communication is reasonable.

Yes, no issues I can see.

Best,

Kevin

Hi Tony,

Tonyx.wu said:

(2) Configure pin 4 as the input positive of cmpss and as overcurrent protection. Use internal DAC to set the overcurrent protection threshold. Is this reasonable

Yes, the above sounds reasonable. The CMPSS can be used to trip the ePWM modules in an overcurrent / voltage condition as well.

Best,

Kevin