DRV8313: Schematic Review

Hi Murthy,

The team will get back to you tomorrow!

Thanks,

Matt

Hello Murthy,

Thanks for posting on the forum. Just a quick question before going into the schematic review, are you requesting a review because you were having problems getting a motor to spin or just as a sanity check?

Schematic Feedback:

1)For INx pins, there are 10k ohm pulldown resistors but the device already contains internal pulldown resistors so these would be unnecessary.

2)Pull up resistors used for NFAULT, NCOMPO 100k ohm resistors were used but typically we recommend using values 5k-10k ohms, NRESET and NSLEEP are always pulled up high so device does not have the option to go into sleep or reset. They can be pulled up using the MCU to allow access to sleep and resets.

3)CPL and CPH  capacitor, the datasheet specifies a .01uF ceramic capacitor, verify that they are VM rated.

4)Bulk Capacitors C1 and C2 going from 12V_I/P do not have a value listed on the schematic. We recommend using 0.1uF capacitors, and recommend for them to be rated 1.5 to 2 times the value of your supply. On our EVM we also include a 10uF capacitor to ground.

5)R1 value on schematic left blank, but just wanted to let you know that this resistor is optional.

6)ENx and INx are considered logic high by applying 2.2V - 5.25V, not part of the schematic but I thought the information might be helpful.

Best,

Isaac

Dear Sir,

Thanks for your warm reply.
we did the changes you mentioned in the above reply.

VM rated ceramic capacitor, what exactly it means?

is it capacitor should be rated for 100VDC with X7R dielectric??

Regards
Murthy

Thanks for your quick support

Regards

Murthy

Hi Murthy,

Please reach out if any further questions. Can I close this thread?

Thanks,

Matt

Hi Murthy,

I'll go ahead and close this thread.

Thanks,

Matt