How to use MC33FS8430G1ES with out buck2

jingfang · ‎07-04-2022

My project don't use buck1&buck2.

I find how to use MC33FS8430G1ES with out buck1 in AN12333,but not find how to use MC33FS8430G1ES with out buck2. Is it same?

diazmarin09 · ‎07-06-2022

Hello Jing,

We suggest to keep the LDO1 related pins connected just like the enabled LDO1. And you can just do not use the LDO1 output .

You can disable the LDO1 output after power up by below bit if you want.

Anything unclear , please let me know.

Regards,

David

diazmarin09 · ‎07-04-2022

Hello Jing,

I hope all is great with you.

You are correct, the same procedure can be applied to the BUCK2 regulator in case both regulators are not used.

Regards,

David

jingfang · ‎07-04-2022

Thanks a lot~ How about LDO1?

diazmarin09 · ‎07-06-2022

Hello Jing,

We suggest to keep the LDO1 related pins connected just like the enabled LDO1. And you can just do not use the LDO1 output .

You can disable the LDO1 output after power up by below bit if you want.

Anything unclear , please let me know.

Regards,

David

jingfang · ‎07-06-2022

I was just checking.There's not muck room on the board.

Can LDO1 be suspended directly?

Could you check the circuit diagram for me?