CCS/BOOSTXL-DRV8301: Current to high when motor spin
Part Number: BOOSTXL-DRV8301Tool/software: Code Composer StudioHi, I am using a custom board using TMS320F28027F with DRV8301. The motor I have is to be spinning at maximum speed of 31000 rpm with no...
View ArticleRE: DRV10983EVM: Install the newest version DRV10983 GUI, but not worked.
Hi Tan,When you get error message don't press cancel button, it will close the GUI. Can you recycle the power, and just click the continue button.Regards,Krushal
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DRV10983EVM: Install the newest version DRV10983 GUI, but not worked.
Part Number: DRV10983EVMInstall the newest version DRV10983 GUI, not worked.I follow each step and also install the all request software, it show some error when run the GUI. If I click "Continue", and...
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DRV8711EVM: Stepper holding with vibration
Part Number: DRV8711EVMOur customer has a question about DRV8711EVM. I'm posting the question for the customer:++++++++++++++++++++++++++++++++++++++++++++++We have found the following phenomenon on...
View ArticleRE: DRV8842: Microstepping for stepper motor
Hello Rick,DRV8842 has 32 levels of current regulation. So can we not keep relative current at 5% and move the DC motor by 3 degrees and then stop the motor?
View ArticleDRV10970: Trapezoidal Commutation With 0° Hall Placement
Part Number: DRV10970How does one configure the DRV10970 to work in trapezoidal commutation with 0° Hall placement? Table 4 of the data sheet offers only the 30° option for trapezoidal commutation.The...
View ArticleRE: DRV8842: Microstepping for stepper motor
Hi th133,The DRV8842 has as many levels of current regulation as you desire.This level of microstepping can be accomplished by setting the I4:0 pins to 11111 (100%) and changing the ref input....
View ArticleDRV8842: Microstepping for stepper motor
Part Number: DRV8842I am using DRV8842 to control movement in a stepper motor. The step angle in my stepper motor is 1.8 degrees. How do I use microstepping to rotate the stepper motor by 1 step angle...
View ArticleRE: DRV8835: reduce motor starting current
Hi Cafain,1. Is this a problem as how to use DRV8835?No, the DRV8835 is able to handle VM voltage up to 11V2. I can imagine that Ron of the built-in FET changes, Is it possible to think that when...
View ArticleRE: CCS/DRV8885EVM: DRV8885EVM Firmware Bug?
I think I've resolved the issue, but limited testing has been performed.I believe the issue was here:void MotorStateMachine() { // update the SteppingRateTMR if required // reduce the number of...
View ArticleRE: DRV8834: About actual waveform at over current protection(OCP)
Hi Luis-san,I greatly appreciate your cooperation.I will report this information to our customer.Regards,Kanemaru
View ArticleRE: DRV110: Current unexpectedly changes with voltage to solenoid
Hi Matthew, Thanks for your post! I'm recreating your setup and attempting to find the source of the problem. I'm hoping to have an answer for you soon. Can you clarify what (if any) source resistance...
View ArticleRE: DRV110: Current unexpectedly changes with voltage to solenoid
Hi Travis,Thanks! To answer your questions...1) No source resistance, the power supply is driving directly2) I measure about 2.6 or so. However, if the solenoid is hooked directly to the power...
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RE: DRV8871: How to connect DRV8871 GND and PGND in Layout
Max,You can connect PGND to GND with the Thermal PAD as shown below. Thanks.Hi
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DRV8871: How to connect DRV8871 GND and PGND in Layout
Part Number: DRV8871HiHow to connect GND and PGND in Layout? In this layout recommendation, GND and PGND are not connected together, so where to connect them? How to connect? Connect directly or use...
View ArticleRE: DRV110: Current unexpectedly changes with voltage to solenoid
Thanks for the information. While I am working on reproducing the problem on our end, you may try adding resistance between the source and the input node on the device. According to the parameter...
View ArticleRE: DRV110: Current unexpectedly changes with voltage to solenoid
Thanks Travis. If you look at the schematic, we have a 20V zener in line with the 28V, then a 4.7k resistor between that and the internal zener in the DRV110a. Is this sufficient or am I missing...
View ArticleRE: DRV110: Current unexpectedly changes with voltage to solenoid
No, I believe you are correct and that should be limiting current sufficiently. I noticed that your MOSFET is rated nominally at 65nC of gate charge when Vgs = 10V, and the application note suggests a...
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RE: DRV110: Current unexpectedly changes with voltage to solenoid
We can try to address this. However, how would that result in a curve as seen below? This is a measurement we did today on a slightly different solenoid, but the characteristics of the curve are what...
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