DRV8702-Q1: Question about Dead Time count start condition

NOBUO FUJIHARA

Part Number: DRV8702-Q1

Hello Champs,

In 8.3.8 Dead Time of the datasheet, it says,"In addition to this digital dead time, the output is Hi-Z as long as the voltage across the
GLx pin to ground or GHx pin to SHx pin is less than the FET threshold voltage.".

Could you provide further information of the threshold value?

Best regards,

over 6 years ago

0 Wang5577 over 6 years ago

TI__Guru 56650 points

FUJIHARA-san,

I am looking for the answer. When I have it, I will let you know ASAP.

0 NOBUO FUJIHARA over 6 years ago in reply to Wang5577

TI__Genius 9335 points

Hi Wang Li-san,

Thanks for your support.

Is there any update on this?

Best regards,

0 Wang5577 over 6 years ago in reply to NOBUO FUJIHARA

TI__Guru 56650 points

FUJIHARA-san,

I just got the answer. The internal threshold voltage is about 1V with 20% tolerance.
"In addition to this digital dead time, the output is Hi-Z as long as the voltage across the GLx pin to ground or GHx pin to SHx pin is less than the FET threshold voltage.".

Motor drivers

Motor drivers forum

DRV8702-Q1: Question about Dead Time count start condition