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What is VM operating supply current?
Hi, when I read the datasheet of DRV8711, I find Ivm, as shown belowWhy is its value so little? Is it the current through each winding of stepper motor?If not, what is Ivm?If the rated current of my...
View ArticleDRV8432 control problem
Dear All,I'm New to stepper motors in general but I've long experience in microcontrollers, I've an application that requires to drive 4.24A Stepper motor, I found that the DRV8432 is considered the...
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Custom Drv8313 Circuit Always gives Nfault low and charge pump not working.
Hi,We have built a custom circuit board which is designed for Driving a Solenoid. The Charge Pump is not working (implied from the Difference of voltages between Vc(Charge pump) and Vm(Supply) is...
View ArticleDRV10983 Drive Chip
I am currently using a motordrive, PN: DRV10983 to drive a brushless DC motor made my Maxon, PN:368852. I am having a lot of difficulty getting the motor to rotate at all and it instead appears to just...
View ArticleDRV8412 max PVDD
Hi, in the datasheet of DRV8412/32 the maximum recommended voltage for PVDD is 52,5V. In my application the Power Supply ist 56V, this is within the limits of the absolute maximum Ratings.Do I get...
View ArticleDRV8825 Current control PWM
Hi there,I have a question regarding DRV8825 stepper motor driver. The datasheet states that the maximum step frequency is 250 kHz. However there is also written that that Internal current control PWM...
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SPI Config For DRV8301-69M-Kit
Hi guys,I have an Arduino setup as the master transmitting 8 bits of data through SPI (I stepped the voltage down from 5V for safe operating range). I only want to receive data on the 69M board. I've...
View ArticleStepper driver 8818 has minimum holding current?
Hi all, please help!This is the first time I work with a stepper motor also as stepper driver and I'm using the stepper driver 8818 now! The problem is I saw that the holding current always has a...
View ArticleRTC chip BQ32002/BQ32000 Battery drain current issue
BQ32000 has a known issue when battery is initially attached to RTC, the battery drain current could be as high as 80uA,it need a power cycle to make the battery drain current back to 1uA.see previous...
View ArticleVS undervoltage error on DRV3201
Dear TI Team,I am driving BLDC motor with the DRV3201. When I start the motor with PWM duty cycle more than 60%, the BLDC motor rotates.If the PWM duty cycle is less than 60%, the motor tries to rotate...
View ArticleDRV10983 Driver with BLDC motor
If we feed wrong parameter to DRV then motor will not run properly or efficiently.My question is what kind of parameter of BLDC motor may change after some year and what will be its effect on its...
View ArticlePosition control of BLDC motor based linear actuator using DSP and DRV8313...
Hi, I am working on a linear actuator made up of BLDC motor. LVDT sensor is mounted on the actuator for position feedback. So far I am successfull in spining the motor using DSP+DRV 8313 and...
View ArticleDRV8711 - Stepper Motor Missing Steps At Lower speed
Dear All, I have been driving stepper motors with DRV8711 for XY Table.I have incremental encoders to check for missing steps.The faster speed(625 rpm) produces accurate encoder...
View ArticleDRV10983
Dear TI Support Team,I am evaluating the DRV10983 using the respective EVM. I have an old design using a Toshiba TB6575FNG for an controller that I received for evaluating the motor I have to use by...
View ArticleDRV8312 eval kit options?
I'm looking to use the DRV8312 in my current project (we’re actually switching from the DRV8840 because the motor has changed to a BLDC). The only eval kit I see for it also comes with a motor...
View ArticleDRV8303 operation without SPI
Hi Team,If default state of DRV8303 is OK for an application, can this device work without SPI control?Thanks and regards,Mahendra
View ArticleDRV8308 - Using an isolated 12V supply voltage instead of intended 150V motor...
Hello, I am looking for a closed loop 3phase BLDC motor pre-driver chip for a EV application that drives 3 half bridges of "IRFSL4115PbF" N-Channel Hexfets.I need to drive a 3 phase Brushless DC motor...
View ArticleProgramming DRV10975 with DRV10983EVM-TB and MSP-EXP430G2 "Could not find...
Hello,I'm trying to use an MSP-EXP430G2 Launchpad and DRV10983EVM-TB target board to program a DRV10975 chip. I opened the programming tool, sloc316, in CCS Version: 6.1.0.00104 and built...
View ArticleBQ32000 I2C communication question
the I2C SDA/SCL trace between BQ32000 and Micro processor is around 3.3inch long(in one PCB), and the I2C clock frequency is 100khz, does it will cause I2C communication problem ?Thanks.
View ArticleDRV8303 SPI bus read question
I am looking at the data sheet for the DRV8303. On page 17 the data sheet says" For a read command (Nth cycle) in SPI, SP0 will send out data in the register with address in read command in next...
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