DRV8244-Q1: detect state change

Hello Hirata-san,

The DRV8244-Q1 has a nFAULT pin that indicates a fault to the controller. For details, refer to nFAULT in the Device Configuration section of the datasheet.  The device also has a Diagnostics pin (DIAG) that can be used to configure some other diagnostics as detailed in 8.3.3.4 DIAG

Regards,

Jacob

Hello Jacob-san,

Sorry I meant device functional state. Are there any method that we know the device functional state of DRV8244HQDGQRQ1?

I don't think so but let me check.

Regards,

Hirata

Hirata-san,

The functional state should always be known based on the inputs and outputs of the driver when you are monitoring the nFAULT pin and setting the control pins (DIAG, DRVOFF, nSLEEP, MODE, etc.).  For example, it won't enter the SLEEP state unless the nSLEEP pin is asserted low for >t_SLEEP.  Beyond that, I don't think the chip has what you're asking but I can ask my team for further clarification.  

Regards,

Jacob T. 

Hello Jacob-san,

Thanks for your answer.

Customer is asking if the DRV8244-Q1 can output some information if state is changed, or can output the state of the driver.

My understanding of your answer is DRV8244-Q1 cannot do it but let me know if DRV8244-Q1 can do.

Thanks.

Regards,

Hirata 

Hello Ryan-san, Jacob-san,

Thanks for your clarification.

I understood.

I appreciate your support.

Regards,

Hirata