AWR6843AOP: ICMS application start to monitor and warning after vehicle engine off, could AWR6843AOP with PMIC IC to support power saving mode and wake-up by engine on source?

Hi, 

Do we need this mode during the switch over from ACC/IGN to Battery? OR do you want to completely shutdown the device while on car battery? 

Regards, 

Sudharshan K N 

Hi Sudharshan,

Since the ICMS connect the power from car battery, the behavior is shown as below.

* When the vehicle is engine off (ACC off), ICMS start to detect any child or person inside the car within 5 minutes and send the warning. After 5 minutes, ICMS goes to suspend mode (Power consumption should be very low < 2mA) to prevent consume the battery voltage.

* When the vehicle is engine on (ACC on) again, ICMS wakeup (PMIC should provide power to SOC).

Best,

Richard

Hi, 

One option is to turn off the power to the device by writing the commands to the PMIC over I2C. This will put the device into shutdown mode. 

Regards, 

Sudharshan K N 

Hi,

It seems good solution to shutdown the SOC & PMIC, the question is how PMIC wakeup and do boot up sequences for SOC?

Many thanks.

Hi, 

Can the PMIC I2C be accessed through ECU? 

Regards, 

Sudharshan K N 

Hi,

No, the design for ICMS is without ECU box.

It seems we still need extra-MCU to control the power for the suspend/wakeup on the radar PCB.

It seems we still need extra-MCU to control the power for the suspend/wakeup on the radar PCB.

I am not sure if this is correct?