DRV8706-Q1: Request for Schematic Review

lee jaewook

Part Number: DRV8706-Q1

Tool/software:

1. DRV8706SQRHBRQ1 Half-Bridge Configuration
We are currently using the DRV8706SQRHBRQ1 to implement a Half-Bridge.
At the customer’s request, we have applied a parallel FET configuration for the Half-Bridge.

In this configuration, we would like to confirm whether applying a parallel FET arrangement as shown in the attached schematic is acceptable.
If there are any potential concerns, we would greatly appreciate your guidance on what issues might be expected.

2. Request for Schematic Review
We kindly request your review of the attached schematic.

3. We would also appreciate it if you could review the LM74703QDDFRQ1.

TI-Part REVIEW.pdf

26 days ago

0 Shinya Morita 25 days ago

TI__Mastermind 44855 points

Hi,

Thank you for your post. Monday September 1st is national holiday in US. Please expect delay or please wait for our expert assignment on Tuesday US time

0 Shinya Morita 24 days ago in reply to Shinya Morita

TI__Mastermind 44855 points

HI,

Thank you for your questions.

Could you share your company name and application use case (e.g seat position control motor, window lift motor etc)?

1. Parallel connection cannot be used with DRV. Please use one FET for each GH or GL.

2. Will do schematic feedback later.

3. LM part is not our group. Please create new E2E post separately.

regards

Shinya

0 MyoungBong KIM 24 days ago in reply to Shinya Morita

Prodigy 170 points

HI Shinya Morita

I am responding on behalf of Jaewook Lee, who is currently on vacation.
Our company is DASAN Networks, and we intend to use it for brake control.

0 Shinya Morita 23 days ago in reply to MyoungBong KIM

TI__Mastermind 44855 points

Hi,

Thank you for sharing background information.

Let me attach my feedback for your schematic.

By the way, could you share how many brakes/motor in car? How many DRV are you going to drive one motor/brake?

250903_DRV8706Q1_DASAN_feedback.pptx

regards

Shinya

0 lee jaewook 19 days ago in reply to Shinya Morita

Prodigy 95 points

I am using one brake, and one DRV is used per brake. In your reviews, there is a statement that 'DRV8106S-Q1 is the single half-bridge version of DRV8706-Q1.' However, I believe the DRV8106S supports an SPI interface rather than being a single half-bridge version. Is that correct?

0 Shinya Morita 18 days ago in reply to lee jaewook

TI__Mastermind 44855 points

Hi,

Thank you for your feedback, I would like to clarify our device line up here.

1) DRV8106S-Q1: 1 CH half bridge (1/2 H-bridge) gate driver with SPI interface/inline current sense x 1pcs

2) DRV8706S-Q1: 2 CH half bridge (1 H-bridge) gate driver with SPI interface/inline current sense x 1pcs

3) DRV8705S-Q1: 2 CH half bridge (1 H-bridge) gate driver with SPI interface/ Lowside only current sense x 1pcs

If your braking motor is H-bridge configuration, DRV8706S-Q1 should be good one. I considered you are using SH1/GH1/GL1/SL1 only, then SH2/GH2/GL2/SL2 are not used in your schematic