DRV8301: Input to INH_A and output from GH_A

Ayushi Thakkar

Part Number: DRV8301
Other Parts Discussed in Thread: MOTORWARE

Hi,

I am trying to test DRV8301 on breadboard . I have connected F28069 and DRV8301 as shown in schematic in motorware and control suite.

I am not able to understand how to test GX_A , GX_B , GX_C . I tried applying pwm of 1.2kHz of 1.6volt on INH_A but GH_A remains constant at some 2.2v and GL_A remains constant at 1.7volt.

Some of the values of different pins are as follows:

Fault - 0.0 volt

OCTW - 3.2v

GVDD - 3.0v

DVDD - 2.5

AVDD - 3.2v.

I have already connected MOSFETS with DRV8301.

Is there any other way I can test DRV pins INX and GHX?

and what results should I be expecting from the way I am testing?

over 6 years ago

0 Adam Sidelsky over 6 years ago

TI__Guru 65450 points

Ayushi,

Your AVDD, GVDD, DVDD voltages are all too low. You also have a fault condition.

I would not recommend using a breadboard for this, I would order an EVM.

Regards,

-Adam

0 Ayushi Thakkar over 6 years ago in reply to Adam Sidelsky

Intellectual 840 points

I wanted to make my own pcb , so I am testing DRV8301 on bread board.

I have not connected power pad to GND as I can not found smt to dip adapter with thermal pads connection on it.

Is there any other way I can check if DRV8301 is functioning correctly?

0 Adam Sidelsky over 6 years ago in reply to Ayushi Thakkar

TI__Guru 65450 points

Power pad is essential. Please order an EVM if you can.

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DRV8301: Input to INH_A and output from GH_A