DRV10983: The device PIN TO PIN with DRV10983

Hi Charlie,

We have DRV10987 which is P2P with DRV10983. DRV10987 has 28-V maximum operation with protection up to 45 V and OCP rating of 3.5A. Please refer to below app note for more details.

 https://www.ti.com/lit/an/sloa274/sloa274.pdf

If you are looking for higher power devices with integrated FET and control, we recommend MCF8316A and MCF8315A. However, these devices are not P2P with DRV10983. 

Regards,

Vishnu

Hi Vishnu,

Thanks for your support.

Allow me to ask you one more question: My customer uses 25kHz PWM configuration. When the speed command reaches 80%, the motor stops working. It should trigger some kind of protection mechanism. Can 0x10 be read in the GUI? After changing the PWM configuration to 50kHz, the speed can continue to rise. Does the frequency of PWM affect OCP or Lock? Thanks.

Regards,

Charlie

Hi Charlie,

Register 0x1E should give the fault code. Can you read this register and check what fault gets triggered above 80% speed? 

Regards,

Vishnu

Hi Vishnu,

It is Lock0. 

Does the frequency of PWM affect Lock0? Thanks.

Regards,

Charlie

Hi Vishnu,

Thanks for your support.

According to my understanding, the customer's motor can work normally, but it is also on the edge of the current limit value, right?

In order to improve the reliability of the motor, it is recommended that customers change to DRV10987, right? Thanks.

Regards,

Charlie

Charlie,

I guess customer's motor is rated closer to 3A. DRV10983 and DRV10987 can support up to 3A startup current and 2A rms continuous winding current. Overcurrent protection rating of DRV10987 is 3.5A. Overcurrent protection rating of DRV10983 is 3.0A. This means DRV10987 can handle more current in the event of short circuit (phase to phase or phase to GND shorts).   

Regards,

Vishnu