DRV8301: DRV8301-HC-EVM Rev D_BUCKCONVERTER
Part Number: DRV8301I have a DRV8301-HC-EVM Rev D schematic.but R2,R3,D2 is NP.Is this not necessary?
View ArticleRE: DRV8308: When the motor stops, it sticks for about 0.5 seconds
Andrew, Can you slow the clock to almost zero but keep it running slowly and then use the Brake intentionally? Regards, -Adam
View ArticleRE: DRV8308: IC controller not initiating commutation at start up when...
Pierre, I think the DRV may be looking for the hall inputs to stop switching when the speed is set to 0. Can you provide a scope image showing the three hall signals and the 3 second delay? Regards, -Adam
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: how to know QEP(encoder absolute count )
There are no such variables to support your requirement in instaSPIN-motion, you have to calculate the absolute position based on the PosStepInt_mrev and PosStepFrac_mrev since the position sensor is...
View Articlehow to know QEP(encoder absolute count )
Hi every one 1I am using proj_lab13b.c ,I want to have absolute motor count either in MRev or Encoder pulse .I found ST_Obj->Pos->move->PosRollover and ST_Obj->Pos->move->PosRef_mrev...
View ArticleRE: DRV8662: questions about the input and output characteristics
Hi team I mean, if we didn't add a low pass filter, dose DRV8662 still support PWM input? Thanks! Best regards, Jamie
View ArticleRE: how to know QEP(encoder absolute count )
i mean the register which store the counts ,I want that do you know which register is?
View ArticleRE: DRV8873-Q1: DRV8873-Q1 NMOS current characteristic
Hello Rick Ducan,I haven't received reply yet from my customer.Thanks for your consideration.Regards,Oliver Kim
View ArticleDRV8873-Q1: DRV8873-Q1 NMOS current characteristic
Part Number: DRV8873-Q1Hello team, happy new year!My customer is curious about NMOS drain current vs temperature specification which is integrated in DRV8873-Q1.I found Rds(on) graph in the datasheet,...
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CCS/DRV8301: No pwm output when the PVDD1=Vbus higher than 14V
Part Number: DRV8301Tool/software: Code Composer StudioHi all,In my case, the PVDD1 and Vbus of MOSFET are connected. PVDD2 is float.No SPI connected (using the default value).When I put the Vbus below...
View ArticleDRV8301: DRV8301 limits - need more gate drive average current
Part Number: DRV8301Dear Sirs/Madams-I have worked with the DRV8301 extensively via the DRV8301 individually and the DRV830x-HC-C2-KIT_v105 kit and the DRV8312-C2-KIT_v128 kit and the...
View ArticleRE: background loop & state machine with cpu timer 0/1/2
what is background loop? A: All no running in ISR (interrupt subroutine) codes, and in themain() loop. Why are 3 cpu timers (0/1/2) run in this example? Do they count to special values? A: Just an...
View Articlebackground loop & state machine with cpu timer 0/1/2
In FOC example I know that we run mainISR in RAM which is interrupted with ADC but,My questions :what is background loop?Why are 3 cpu timers (0/1/2) runed in this example? Do they count to special...
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RE: DRV10970: Current operation mode problem
My motor configuration marked with yellow.From this specification I see that the inductance is small, so you think that higher frequency will help?
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DRV10970: Current operation mode problem
Part Number: DRV10970Hi,I choose DRV10970 driver for Faulhaber motor EN-1226 (9W).And I have a problem with current signal form, it's not looks like in you datasheet (see photo). Can you confirm that I...
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DRV10987: Failing at first step of setting up DRV10987 - no buck and 3.3V out!
Part Number: DRV10987Hi,I am having trouble with the standalone chips. Before integrating into a circuit, I want to check I can communicate with them on the I2C bus/generally make them work from the...
View ArticleDRV8308: Speed control
Part Number: DRV8308Hi,In our project , we are planning to use DRV8308 for speed control of BLDC motor.In datasheet , i don't understand below points.1) RPM Vs Duty cycle formula,For , CLKIN how much...
View ArticleRE: DRV8301: DRV8301 limits - need more gate drive average current
OK- studying - Ah. The 'Miller Effect' ....Kurt
View ArticleDRV8711: initialization worked fine but signals on STEP Pin do not get the...
Part Number: DRV8711Hello everyone,I very interested in the DRV8711 and especially its use as stepper motor driver.I developed my own board for a cnc maschine. I could initialize the DRV8711 via SPI...
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