DRV8343H-Q1EVM: DRV8343H-Q1EVM

mustafa aydemir

Part Number: DRV8343H-Q1EVM
Other Parts Discussed in Thread: DRV8343-Q1, , DRV8343S-Q1EVM

Hi, dear experts.

I'd like to learn if I can use the DRV8243x-Q1EVM as assymetric half bridge topology for 3 phase swicthed reluctance motor.

The current rating of the EVM is suitable for my application but the rotor position information isn't coming from hall effect sensor. It is coming from an optical encoder of the test bench unit.

The rotor position information is been derived from the test bench RS232 port. The test bench information is in this link:

www.kandh.com.tw/.../_en_em-3000-introduction_10708.pdf

Thanks in advance.

Best regards.

over 3 years ago

0 Aaron Barrera over 3 years ago

TI__Mastermind 26046 points

Hi Mustafa,

Thanks for posting to the MD forum!

You can find information for driving a Switched Reluctance Motor here in this app note with the DRV8343-Q1: https://www.ti.com/lit/an/slvaen9/slvaen9.pdf?ts=1592831688345&ref_url=https%253A%252F%252Fwww.google.com%252F

We specifically have information on using Asymmetric Bridge Configuration on page 4.

0 mustafa aydemir over 3 years ago in reply to Aaron Barrera

Prodigy 70 points

Hi Aaron,

Thanks for the reply. The application report is very useful for me. Actually my questions are about the DRV8343H-Q1 and DRV8343S-Q1Evaluation Module.

Lets continue with the "DRV8343H-Q1EVM and DRV8343S-Q1EVM User's Guide". https://www.ti.com/lit/ug/slvubb8b/slvubb8b.pdf?ts=1592995726218&ref_url=https%253A%252F%252Fwww.google.com%252F

Firstly, on page 6, it seems that by disconnecting SHx-DLx jumpers, we can use the EVM as 3 phase assymetric half bridge converter to drive a 3 phase switched reluctance motor. Isn't it?

Secondly, I couldn't figure out the SPI interface pins in the "DRV8343H-Q1EVM and DRV8343S-Q1EVM User's Guide". Is there an UART input for serial communication in order to give the rotor position information and torque information to the EVM, which are coming from my test bench.

Looking forward hearing from you, best wishes.

Mustafa.

0 Aaron Barrera over 3 years ago in reply to mustafa aydemir

TI__Mastermind 26046 points

Hi Mustafa,

Absolutely! You can remove the SHx-DLx jumpers and use Independent MOSFET Mode to support the 3-phase asymmetric half bridge configuration. We have a specific User's Guide for DRV8343-Q1 Independent MOSFET Mode here: https://www.ti.com/lit/ug/slvubc2/slvubc2.pdf?ts=1593004899447

You will need to install the diodes on the bottom of the EVM to support the configuration.

The DRV8343S-Q1 supports SPI but is used to set register settings and diagnose faults. If you would like rotor position information, I would just use hall sensors or an encoder to feed that information back to the MCU. Our devices don't gather torque information, the closest thing to that is a torque controller using current feedback from the CSAs in Field-Oriented Control.

0 mustafa aydemir over 3 years ago in reply to Aaron Barrera

Prodigy 70 points

Thank you for your kind answer Aaron. I bought the EVM and waiting to receive it. I'll be happy to be in contact if any further questions occur. Wish you the best.

Regards,

Mustafa

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DRV8343H-Q1EVM: DRV8343H-Q1EVM