DRV8343-Q1: 【HELP】use problems of 8343

Zhao Bo

Part Number: DRV8343-Q1

The inputs and outputs of 8343 don't match with the truth table. When output, the high-side MOS tube is always open, the low-side MOS tube cannot open. the output PWM of DSP TMS320F28035PNQ is in corresponding with the input of 8343.

over 2 years ago

0 Matt Hein over 2 years ago

TI__Mastermind 21805 points

Hi Zhao,

Is this the same question that Annie asked? LINK

Can you provide the SPI register settings that you are using?

Thanks,

Matt

0 Zhao Bo over 2 years ago in reply to Matt Hein

Prodigy 10 points

Hi Matt,

Yeah, I think it is the same question that Annie asked.

We use the default values for all SPI register. The IC1 control value is 0x0.

Thanks very much for you help.

Zhao

0 Johnny Vallespir over 2 years ago in reply to Zhao Bo

TI__Intellectual 1350 points

Hi Zhao,

Thanks for the information. I'll get a response to you by the end of tomorrow

Best,

Johnny

0 Zhao Bo over 2 years ago in reply to Johnny Vallespir

Prodigy 10 points

Hi Johnny,

Thank you very much.

Zhao

0 Johnny Vallespir over 2 years ago in reply to Zhao Bo

TI__Intellectual 1350 points

Hi Zhao,

Thanks for the information. Try setting IC3-IC5 to 0x77 for to lower your IDRIVE to 65mA/130mA. As a note, also make sure that you are measuring GHx with respect to SHx and GLx with respect to SLx when measuring your gate outputs. Let me know if the problem persists.

Best,
Johnny

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DRV8343-Q1: 【HELP】use problems of 8343