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switch the control signal of DRV8812s
Hi Team,I would like to have your advice.My customer considers to use two DRV8812s for his application.The block diagram that he images is like the following.I heard Motor_A and Motor_B are operated...
View ArticleReplace with TI motor driver
Hi Team,My customer considers to use LV8702V.I suggested DRV8812 but "High-efficient drive function" of LV8702V is attractive for his application.http://www.onsemi.jp/pub_link/Collateral/LV8702V-D.PDFI...
View Article[DRV3204-Q1] Impact of variability of current sense resistor
Dear all,I would like to know about these.Q1. If Rsns (current sense resistor) have large variability, what kind of impact does Rsns have on VCCOC?Q2. Are there anything to apprehend other than VCCOC...
View ArticleDRV8801 Mode Pins
Would it be ok to allow the Mode pins of the DRV8801 to just float or is it recommended to tied them to GND??
View ArticleDRV8412 - Fault handling, independent PVDD and GVDD supply
I have a question regarding DRV8412 fault handling. The datasheet states "The UVP and POR circuits of the DRV841x2 fully protect the device in any power-up/down and brownout situation". In the case of...
View ArticleQuestion on DRV8301
I have a question regarding DRV8301 chip. The chip provides two shunt resistor amplifiers for current sensing. So one of the phases doesn’t have a shunt in such scheme.Would you be able to provide me...
View ArticleDRV8812 PWM frequency
Hello,My customer uses the DRV8812.He wants to spin a motor as quickly as possible.I think it is limited by PWM frequency and the motor specification.Q1) How about the variation of the internal PWM...
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DRV8308 - Stalling and Speed Lock Issues
I'm trying to implement a motor control system using the DRV8308, initially with the EVM. Two recurrent issues at the moment, to do with locking the speed and stalling at startup.At startup, sometimes...
View ArticleDRV 8301 - Q1 SPI Communication Problem
Dear Sir, - I am using dsPIC micro controller which is interfaced with DRV8301 through SPI communication - If i write in CR1 register and read back the value for verification the DRV8301 returns...
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DRV8332 - current limiting too early.
Hi,I'm using the DRV8332 on a motor driver board in development and am seeing current limiting taking place at too low a current. I suspect it might be pcb layout related but before I jump into...
View ArticleDRV120EVM Peak current
Hello,Going through further tests of the DR120APWR on the DRV120EVM.I am interested during the transcient of the valve activation to avoid current limiting. The valve I use is a 12V, 2.5W valve.This...
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DRV8301 Resetting
Thru a GUI, we change the OCP setting in the SPI register from Current Limit to Report Only. Using the DRV8301 with the BoostXL-DRV8301 board, we will command the motor to jog, one state at a time....
View ArticleDocumentation for TMDSHVMTRPFCKIT or suggestion for other kits
Hello I have a F28377D control card and am considering one of your motor control development kits for motor control. I think the TMDSHVMTRPFCKIT is the only one that uses the F28377D. Is this correct...
View ArticleDRV8308 EXT EEPROM
Where is the description of the external EEPROM format needed to support the DRV8308 booting from the external EERPOM?Seems that TI should have a GUI for programming this. The register bits mapped...
View ArticleDRV8805 GND pin
HiI have questions about GND of DRV8805 DW package. 1.Is it necessary to separate the GND for analog and the GND for digital in case of pattern wiring? 2.Is the following idea correct? 5,6,7pin ->...
View ArticleBLDC with DRV10963 doesnot turn continuously
HiI was trying to run this motor with drv10963.www.encorerc.com/tiger-motor-gb54-1-brushless-gimbal-motorIt has 3 wire and resistance between wire is 17ohm. Small motor comes with drv10963evm runs...
View ArticleDRV8834 Applying digital input while VM is 0V
Hello,I plan to use DRV8834 to drive a stepper motor. VM = 5V and digital input voltage is 3.3V.In case of emergency button being pushed, the +VM will be shut down (0V) to release the motor while the...
View ArticleDRV8307 pr-driver
Dear sir, We are currently design a tool with drv8307 to drive 3 phase hall sensor based BLDC. Problem is: First we connect the BLDC hall sensor line only( We don't connect the UVW power line) And...
View ArticleDRV8834
hello forumbasically i had a look at this chipset drv8834 i have few question regarding thismy project is to connect antenna to stepper motor and move clockwise 30 degree and perform some readingthis...
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DRV10866 with WYE wired BLDC
After I failed to run with 10963,I got new motor with WYE connection.Then motor turned a little then stop for couple of second run again - stops.I checked signal out with oscilloscope.I see 3 frequency...
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