DRV8300: Replacement gate driver for DRV8303

Cleatus Wesley

Part Number: DRV8300
Other Parts Discussed in Thread: DRV8303

I am designing a BLDC controller to run a 48V/15A motor from a battery pack rated at 63V. I will be using TOSHIBA TPH4R10ANL,L1Q 100V N Channel MOSFETs in H-bridge configuration.

Will the DRV8300 be a suitable replacement for DRV8303 to drive the MOSFETs?

over 3 years ago

0 Andrew Liu over 3 years ago

TI__Mastermind 18981 points

Hi Cleatus,

DRV8300 should be a suitable part for your needs at that voltage level.

We typically suggest for BLDC applications to find a part that's rated for 1.5x-2x your nominal operative voltage, to account for voltage transients from BEMF during conditions like braking and coasting
Questions:
- What duty cycle does your application need? Is 100% duty cycle a requirement?
- What is your plan for motor commutation position feedback?
  - DRV8300 doesn't have any Current Shunt Amplifiers (CSA) - so you'd need an external solution like hall-effect sensors, external CSAs, BEMF voltage sensing, etc..

Here's a selection-guide resource for further info:

https://www.ti.com/lit/an/slvaes1/slvaes1.pdf

Thanks and Best Regards,
Andrew

0 Andrew Liu over 3 years ago

TI__Mastermind 18981 points

Hi Cleatus,

Also one more thing I wanted to mention, since we're talking about a higher-voltage application here.

In this case, your battery is rated only for 63V (instead of 100V), but is connected to the Vdrain/DC-voltage bus.
from situations like coasting, braking, etc... it is expected that you'll probably see transient voltages above 63V on this bus node.

We have some guidelines for mitigating voltage transients at this DC-bus network, such as bulk capacitance and bypass capacitance.

Best Regards,
Andrew

0 Cleatus Wesley over 3 years ago in reply to Andrew Liu

Prodigy 220 points

Andrew Liu said:
What duty cycle does your application need? Is 100% duty cycle a requirement?

What is your plan for motor commutation position feedback?

DRV8300 doesn't have any Current Shunt Amplifiers (CSA) - so you'd need an external solution like hall-effect sensors, external CSAs, BEMF voltage sensing, etc..

I want to implement FOC on the controller. So, it won't be 100% duty cycle.

I will be using hall effect sensors for position feedback.

0 Andrew Liu over 3 years ago in reply to Cleatus Wesley

TI__Mastermind 18981 points

Hi Cleatus,

Thanks for the confirmation -

In this case, I think DRV8300 should be the best device moving forward to meet your needs.

Please let us know if you have any further questions or concerns. Thanks!

Best Regards,
Andrew

Motor drivers

Motor drivers forum

DRV8300: Replacement gate driver for DRV8303