Compiler/BOOSTXL-DRV8305EVM: BOOSTXL-DRV8305EVM ( problems of output )

user6063790

Part Number: BOOSTXL-DRV8305EVM
Other Parts Discussed in Thread: DRV8305,

Tool/software: TI C/C++ Compiler

I have some problems about DRV8305.

I shared the picture that is input and output in BOOSTXL-DRV8305EVM.

The information 1 is output (J3) and information 2.3 are PWM input ( INH_A, INL_A) in the picture.

There are some problems.

When the input PWM are Low , the output PWM is high.

Can I make the output PWM is low when the input PWM are Low ?

Can you give me some advice? Thank you.

Any suggestion is helpful.

0 Adam Sidelsky over 4 years ago

Hello,

I don't see a J5 connector on the EVM, how and where are you measuring the trace 1 output?

Are you measuring differentially? Single-ended?

Regards,

-Adam

0 user6063790 over 4 years ago in reply to Adam Sidelsky

Thank you for your email. Adam

Sorry.some information are wrong. I measured the trace 1 output in J4.(MOTA. MOTB. MOTC)

I used the way of hall sensor to drive the BLDC.

The information of the picture 1 are the INH A B C.

I think the information are correct.

The picture 2.3 are created by DRV8305.

the picture 2 are MOTA MOTB MOTC (with GND).

the picture 3 are MOTB (with MOTA).

I can't run the BLDC.

Do you know what's happening?

Do you have some advice? Thank you very much.

Any advice is useful. Thank you.

0 Adam Sidelsky over 4 years ago in reply to user6063790

Hello,

The output plots look correct, could you explain your issue with running the motor?

Regards,

-Adam

0 user6063790 over 4 years ago in reply to Adam Sidelsky

I solved this problem.

The problem isn't about DRV8305.

Thank for your help and advice.

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