DRV8711 SPI write and read issue
Hi,My customer is using DRV8711. He has SPI issue at customer's board. It is different in registers setting(writing) value and reading value. This is the issue which rarely happens.Now, I am confirming...
View ArticleDRV3204E-Q1: the value of passive device for motor current sense
Dear all,Could you answer following two questions?■Question 1; Are there some concern to use following value of resistor to set Vgain?I want to set Vgain to x30. You recommend R21=R22=30kΩ, R11=R12=1kΩ...
View ArticleI can not request Samples DRV8701P ¿?
Hello,When I request samples for DRV8701 I put this:Your account does not have access to samples. Please remove the highlighted devices, or, purchase these parts in order to checkout. To learn more...
View ArticleDRV10983 max RPM calculation
Hi team,what is the max RPM for DRV10983 and how can this value be calculated regarding to the motor poles?Where can this information be found in the datasheet?Thanks-Matthias
View ArticleDoes DRV8301/2/3 feature IDRive/TDrive?
Hi,Probably an easy question but I was reading the paper on IDrive/TDrive and wondered if the DRV8301 and its siblings have these features. They seem to be similar but those terms are not mentioned in...
View ArticleDRV3201-Q1 SPI(SCLK state when NCS changes high to low)
Hello,Please answer following question from customer. Figure 1. SPI Timing Parameters shows that SCLK is low when NCS changes from high to low.Please advise what will happen if SCLK is high when NCS...
View Articlefuzzy logic controller tuning using PID values
Hai, Anyone please give the Fuzzy Logic example C code. In google there is a lot of theory. But less application code.Here I want to drive a stepper motor for automotive throttle valve control. It...
View ArticleDRV8835 using GPIO from uP to power Vcc
Allegion would like to use DRV8835 but need low power mode. They would like to use a GPIO from the uP for Vcc to take advantage of the low power mode as long as it can provide 2mA. Could that work?...
View ArticleUnderstanding more DRV8701.
Hello,The truth is that I get a mess understand datasheet.I would to know that maximun voltage the DRV8701 can apply at the gates of the MOSFET my Mosfets VGmax = +-20VThe pins that go to the...
View ArticleDRV8825_EVM
I am running a stepper using the DRV8825 EVM and its GUI, and I am looking at the current at the ISENA testpoint. I am also looking at the average current which my power supply is providing.If I grab...
View ArticleDRV8301/2 PowerPAD dimensions
Good morning,I am trying to figure out if there is a recommended pcb layout and PowerPAD dimensions for DRV8301/2? I referred to the datasheets and was linked to SLMA002 document regarding the thermal...
View ArticleUsing AM57xx and possibly MCU to increase # of stepper motors and eQEPS
Hi All,Sorry not sure if correct forum?Hoping for some feedback regarding what my options are.Looking to build system which hasAs fast and possible processor, at least 1 DDR3 RAM and an Ethernet port.5...
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DRV8301 nOCWT PIN
Hello,We are using a DRV8301 gate driver for a rectifier application. I observed that some of our FETs generate excessive heat because they don't switch good. I saw that the nOCWT PIN is changing his...
View ArticleDRV8818 Issue at Mixed decay operation
HiI operate motor by DRV8818EVM in the following condition. - 3000pps - 24V - 1.5A - 1/2 stepIn this condition, in only Mixed decay case, motor can not be operated. I would like to get advice about...
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DRV8834 Power on/off Sequence
Hi,Could you please tell us whether it is possible to apply the power on/off sequence as below ?Best regards,Kato
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DRV8301 GA_H and GH_C not working independently
Hi,I am currently working on a 3 phase motor driver for FOC with in-phase current measurement (realized with AMC1200 isolation amplifiers). I have built two prototypes so far, both showing the same...
View ArticleDRV8818 - Fault Condition Indication Pin (nFAULT)
In the datasheet of DRV8818 is written "Fault Condition Indication Pin (nFAULT)"I cannot find in any database how to recognize fault.is anyone ever deal with this issue ?another question what is the...
View ArticleDRV8823-Q1 SSTB - is it a strobe/latch or "Active low resets serial interface...
My design consists of several DRV8823-Q1 chips driven by QSPI over more than one command event.There could be 16 (or more) chips which all get an update command, but I'd like them to latch their update...
View ArticleDRV10983 tries to start the motor although analog set point value is 0 V
After evaluation of the DRV10983 EVM I designed a PCB that has the DRV10983 driver chip on it. It is supposed to work as a stand-alone unit no microcontroller that communicates with the BLDC driver...
View ArticleDRV8711 - Possible mid band Resonance?
Hello, I am struggling with an issue I believe is mid band resonance. I have used the DRV8711 very successfully to drive a number of motors up to very high speeds and have been very please with the...
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