RE: The relationship between speed and Iq_ref in FOC
Did you add any load on the motor? The higher reference Iq will get a higher speed. If there is no any load on the motor and the motor friction is small, the speed should increase very quickly and...
View ArticleRE: DRV8824: DRV8824 can not driver the motor
Hi Rick: Customer set R20/R21 to 0.5ohmļ¼the motor still can't rotate. And customer said the motor current is only 20mA. So when mode0,1,2 set to "0,0,0", are the output waveform of AOUT1/AOU2/BOUT1...
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DRV8824: DRV8824 can not driver the motor
Part Number: DRV8824Dear TI:Ā Ā My customer used DRV8824 for a step motor driver, there are output waveform in Aout and Bout, but the motor can't rotate.Ā Ā DRV8824Ā Ā peripheral circuit configuration:...
View ArticleRE: The relationship between speed and Iq_ref in FOC
Thank you so much for your reply. You are right. I didn't connect any load to the motor. You mentioned that the value depends on the inertia, friction and load. Can I guess if I connect a load to the...
View ArticleThe relationship between speed and Iq_ref in FOC
Ā In the current loop debugging of FOC. The relationship between speed and Iq_ref is strange. The increase of speed is followed the increase of Iq_ref when Iq_ref is lower than a certain value. But the...
View ArticleDRV8306: Does DRV8306 supports variable frequency operation
Part Number: DRV8306Hi,My application require a driver supporting variable frequency because My control gives output pwm with continuouslyĀ varying frequency does drv8306 supports such application?Ā
View ArticleRE: BOOSTXL-DRV8323RH: The link on the TI website to the technical documents...
Hi Anuj,Thank you very much.Now it works well.Apparently, it is fixed.Regards,Edward.
View ArticleBOOSTXL-DRV8323RH: The link on the TI website to the technical documents does...
Part Number: BOOSTXL-DRV8323RHThe Link: [View:http://www.ti.com/tool/boostxl-drv8323rh#technicaldocuments:1230:0]Ā does not work.Regards,Edward.
View ArticleRE: DRV8323: output signal from current sense amplifier is dirty
Hi Sergey, Were you able to try this experiment and do you have any further information ?
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DRV8323: output signal from current sense amplifier is dirty
Part Number: DRV8323Hi,We have some troubles with DRV8323 analog path. There is BLDC controller board with DRV in each of two channels. We have tested one channel driving power stage to a constant duty...
View ArticleRE: DRV8305: BEMF bias when using 6-step trapezoidal sensorless control
Hi Diego, An engineer has been assigned and we will respond shortly.
View ArticleRE: DRV8305: BEMF bias when using 6-step trapezoidal sensorless control
Hi Diego - 1) We are unable to view D021.bmp. Could you please re-attach this file. 2) Are you able to get your motor spinning with the controller on the EVM. 3) Have you disconnected the onboard MCU...
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DRV8305: BEMF bias when using 6-step trapezoidal sensorless control
Part Number: DRV8305Dear all,we are intending to use DRV8305 for sensorless 6-step trapezoidal control. We are using evaluation board DRV8305-Q1EVM, connected to an external micro-controller (signals...
View ArticleDRV8308: IC controller not initiating commutation at start up when releasing...
Part Number: DRV8308We are experiencing some issues at BLDC motor startup. The commutation sequence doesn't seem to start the right way sometimes. We are operating the motor under BASIC mode and we...
View ArticleRE: CCS/DRV8305: Problem with DRV8305
Mohammad, Where in the datasheet do you see the info quoted above? Are you using the EVM? Regards, -Adam
View ArticleRE: DRV8323: Unused driver stage pins
Holger, The advice Anuj mentioned above is for when you are not using a complete phase. We didn't understand that you meant an unused Highside or unused lowside. The datasheet on page 33 is correct....
View ArticleDRV8323: Unused driver stage pins
Part Number: DRV8323Hello,should the pins of an unused driver stage be unconnected/open?Regards, Holger
View ArticleRE: 1xPWM mode logic check please...
Adam,I showed the scope images in the previous thread.GHx, GLx signal was cheked. But it was different from truth table with 1xPWM mode.Thank you.
View Article1xPWM mode logic check please...
Hi,IĀ open new thread, because the original thread is locked.Could you check the logicĀ using 1xPWM mode with DRV8323RH?
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