DRV8432: Hot Slug

Noriyuki Takahashi

Genius 9215 points

Part Number: DRV8432

Hi team,

I have questions about DRV8432 Hot Slug.

- Heat Slug should be connected to Analog GND, is this correct?

- Is it recommended to connect Heat Slug to Floating GND?

We would like to connect Heat Slug to Floating GND. This is because they want the heat to flow through the heatsink attached on Heat Slug.

Regards,

Noriyuki Takahashi

over 6 years ago

0 Luis Riveros over 6 years ago

TI__Expert 4435 points

Hi Takahashi-san,

The datasheet recommends to connect the heat slug to system ground on PCB to reduce ground noise. Thank you.

0 Noriyuki Takahashi over 6 years ago in reply to Luis Riveros

TI__Genius 9215 points

Luis,

Where can we see the description on the datasheet?

I can't find it.

Regards,

Noriyuki Takahashi

0 Noriyuki Takahashi over 6 years ago in reply to Noriyuki Takahashi

TI__Genius 9215 points

Luis

Any comments on this?

Regards,

Noriyuki Takahashi

0 Noriyuki Takahashi over 6 years ago in reply to Noriyuki Takahashi

TI__Genius 9215 points

Luis,

Here is additional question.
Could you also tell the allowable load of DRV8432's package?

Regards,
Noriyuki Takahashi

0 Rick Duncan over 6 years ago in reply to Noriyuki Takahashi

TI__Guru** 114905 points

Hi Takahashi-san,

Sorry for the delayed response.

Question 1: Where can we see the description on the datasheet?

The datasheet states: It is also a good practice to connect the heatsink to system ground on the PCB board to reduce the ground noise.

Question 2: Could you also tell the allowable load of DRV8432's package?

Please see the post: e2e.ti.com/.../229936

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DRV8432: Hot Slug