BLDC trapazoidal sensored commutation scheme with DRV8312EVM
The BLDC Sensored trapazoidal motor driver code pulse width modulates the RESET signals instead of the PWM signals as is suggested in the DRV8312 data sheet. Why? Is there any downside to doing it...
View ArticleDRV8711 false PRE-DRIVER FAULT when current compensated chokes are used
Hi,The PRE-DRIVER FAULT (xPDF) occurs after drivers are enabled (when the DRV8711 is cold). PCB and MOSFETs are OK. Setting of the DRIVE register has no influence (50 mA, 100 mA, 150 mA, or 200 mA)....
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Issues with using the DRV8301 as a DC/DC FET driver
Hey all,I'm in the process of trying to use the DRV8301 as a FET driver for a 3-phase step-up (boost) converter, which to date has been met with only moderate success.Below is a part of the schematic...
View ArticleDRV8711EVM controlling
can we control DRV8711EVM using just a step and direction pulse from a microcontroller ? or we need SPI to control ?
View ArticleLooking for a true trapezoidal brushless dc motor
HiI am a graduate student who are using 28335 for motor control application.My question isn't about DSP, but about finding a brushless dc (bldc) motor with trapezoidal back-EMF. All the motors that I...
View ArticleDeciding on a chip for my 3 phase sensor less bldc motor control??? Need Help!
Hello,I am new to this forum and new to motor controllers or drives. For my senior design project my team and I are competing in the shell eco marathon, our problem is a change in regulations for this...
View ArticleDRV8432 Control start connections BLDC motor
I have start connections(~Y)BLDC motor.It's have 6 wire hall sensor.I have read on forums and datasheet of DRV8432.I see,DRV8432 can be used to driver BLDC motor with 2 phases operating and the 3rd...
View ArticleDRV8301 Buck regulator
Hi Ti experts!I am interesting yours DRV8301 device and i am already tried several functions. It works very well. And now, I want to use buck regulator as Vin = 24V, Vout = 12V and Iout = 100mA. But...
View ArticleFUNCTIONAL & SPECIFIC QUESTIONS ON DRV8301-HC-C2-KIT
Hello. This is my first time here. I have a little experience on DSP TMS320F28027 and I now plan to buy the DRV8301-HC-C2-KIT on which I have some questions.1) Can it work as a "stand alone" device? I...
View Articlei need help with DRV8432 all modes
All, I am both the hw and sw designer for a new project and the TI DRV8432DKD is not working well for me at all. I have many questions and need to open up an on-going question/answer session with a...
View ArticleVoltage Problem with DRV11873
Hallo,I'm trying to run a Roxxy BL Outrunner 2827/34 motor with DRV11873. I used 330 Ohm resistors on U, V, and W to the COM. The motor spin fine at 6 volt supply but when I increase the voltage to...
View ArticleDVR8432 Fault and OTW voltage levels
Hi,I have 4 DVR8432 chips on my board and they all seem to have a problem with OTC and FAULT outputs not being fully pulled up to VREG. I measured my VREG and it is 3.3V as expected but the voltage on...
View ArticleDRV8813 Parallel Mode Connection
HI,Can't find any apps note regarding to the DRV8813 connection in parallel. However found the DRV8801 apps note on this. Need advise if it would be the same.One issue is when the PWM is applied, the...
View ArticleDRV8312 Development Kit User's Manual
Hi everyoneI did some calculations for the Stellaris® DK-LM3S-DRV8312 Development Kit based on the manual and the schematics in it. I believe there is probably a mistake on page 10, R10 and R11. R10,...
View Articlewhat is the meaning of TEC Driver inside the DRV8432 datasheet page 19?
Sir, in reading the DRV8432 data sheet on page 19 it refers to a "TEC Driver". what is a TEC ? also inside the DRV8432evm electrical schematic it refers to STUFF OUTPUT FOR DC OUTPUTS. when would this...
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Unexpected DRV8332 shutdown
Hi,We’re using DRV8332 drivers to drive several BLDC in our system. On one of the axes we experience strange driver behavior when trying to accelerate past a certain speed.The first figure below shows...
View ArticleDRV8402 not for new design ... why?
Sir, I am using the DRV8402 in an old product. I am designing a new product and consider using the DRV8432. Regarding the DRV8402 why does TI say not for new design? What is bad about it? What does the...
View ArticleDRV8432 CBC mode pwmA=on, pwmB=constant low, is this correct?
Sri, I am using the DRV8432 in the mode M1=M2=M3="0": Dual full bridges (two PWM inputs each full bridge) with cycle-by-cycle current limit. Configuration 2FB. Lets say i have a simple motor load. To...
View ArticleDRV8432 CBC (mode M1=1, M2=1, M3=0) not work for me
Sir, This mode not work for me. Using the DRV8432 in mode M1=1, M2=1, M3=0 Dual full bridges (one PWM input each full bridge with complementary PWM on second half bridge) with cycle-by-cycle current...
View ArticleDRV8402 and DRV8432 in cycle-by-cycle mode do the fault and otw lines go low...
Sir, in cycle-by-cycle mode do the fault and otw lines go low for overcurrent or over temperaturre problems or does the 8432 handle the faults internally and not need user to toggle the reset line from...
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