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drv8412
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  • Forum Post: DRV8412

    Texas47204
    I am using DRV8412 in mode-3 i.e. Dual full bridges (one PWM input each full bridge with complementary PWM on second half bridge). But my motor isn't working in reverse direction. My PWM average voltages range from 0.6V to 3.15V. The PWM frequency is 300 kHz. So please do provide me a solution...
    on Apr 7, 2010

  • Forum Post: drv8412 current & decay control

    Cor
    Hello, I want to use the DRV8412 with a 48V 3 A stepper. I want to control the current for ever step and also apply mixed decay. Does anyone know how to do this. regards, Cor
    on Jun 19, 2010

  • Forum Post: Re: DRV8412 bootstrap capacitor at 4kHz or 8kHz

    SteveCrump
    Olrik, do you mean DRV8812 or DRV8412? For DRV8412 we do not recommend operation below 10kHz. Best regards, Steve.
    on Oct 13, 2010

  • Forum Post: DRV8412EVM Rev F

    Doug Schmidt
    The website has documentation for the earlier Rev D board which is visually quite different. Could I get the schematic, gerbers etc for the new Rev F board? Documentation of changes to the schematic might be useful as well in case there are changes that should be incorporated into our design. Thank...
    on Mar 3, 2011

  • Forum Post: Re: DRV8412 bootstrap capacitor at 4kHz or 8kHz

    Jim Wyatt
    Steve, What are the issues with driving the DRV8412 below 10KHz? We are trying to use this device to drive stepper motors at frequencies <1KHz. Do you have a device to offer at drive frequencies that low? Best Regards, Jim
    on Mar 30, 2011

  • Forum Post: Re: DRV8412 bootstrap capacitor at 4kHz or 8kHz

    Jim Wyatt
    Jose, Since we are pretty far down the path with the DRV8412, we wanted to use it to at least drive two of our DC motors. But we are having problems driving in one direction. We have smooth operation in one direction only. We know that our proto has omitted some of the capacitors which you have...
    on Apr 4, 2011

  • Forum Post: DRV8412

    turg
    I started using DRV8412DDWEVM for driving a Brush Servo motor (with low current consumption ~0.6A). I’m working with 20KHz PWM, and the DRV8412DDWEVM is working fine when I give duty cycle up to 60%. Using duty cycle greater than 60% the DRV8412DDWEVM output is 0 (OUTA & OUTB are both following...
    on May 8, 2011

  • Forum Post: DRV8412 - using 1 power input for both GVDD PVDD

    turg
    Hi, In a new design I would like to use one 24V power input for both PVDD (24V) and GVDD (12V), and to have as minor affect to other devices that connected to the 24V supply. Therefore, a proper capacitor network must be designed in order to reduce the ripple and transients caused by the 24V...
    on May 31, 2011

  • Forum Post: DRV 8412 n.c. pins: must they be unconnected or grounded?

    Maurizio Canton
    Hi Concerning n.c. DRV8412 pins (3, 4, 19, 20, 25, 42), data sheet recommends to connect them to GND (pin function pg.5) but in evaluation board schematics these pins are unconnected. Which is the right solution, grounded or unconnected? Regards Maurizio
    on Oct 6, 2011

  • Wiki Page: Hardware files and software libraries for DRV83x and DRV84x Kits - Where to Find?

    Ryan Kehr
    Q: Where do you get the hardware files (schematic, BOM, gerbers, etc.) and software libraries for the DRV83x and DRV84x evaluation kits? A: ControlSUITE http://focus.ti.com/docs/toolsw/folders/print/controlsuite.html Download and install at the link above. After install, you can navigate...
    on Dec 6, 2011

  • Forum Post: DRV8412 EVM kit

    James Powell
    I have just obtained the DRV8412 motor contol kit as the example applications for stepper motor control closely match my end application. I was hoping to use the source for this demo as a starting point and build my appliaction around this. However, the soure for the project that comes flashed...
    on Dec 29, 2011

  • Forum Post: Re: DRV8412 sawtooth output?

    Manuel Malagon
    Ryan Kehr Manuel, The device could be entering cycle-by-cycle current limiting mode where one of the outputs is going to a HIZ state. Couple of questions for you: 1) What is the DC resistance of your motor? 2) You mention a motor supply of 12V. Are you also connecting GVDD and VDD to...
    on Jan 4, 2012

  • Forum Post: Re: DRV8412 sawtooth output?

    Manuel Malagon
    Ryan Kehr Manuel, I should have asked before, but are you getting any low pulses on the /FAULT or /OTW pin during this behavior? Make sure to remove R10 and R11 before trying this as I don't believe our internal drivers on the /FAULT and /OTW pins have enough drive strength to overcome the...
    on Jan 6, 2012

  • Forum Post: DRV8412 thermal calculations/limitation

    Daryoush Sahebjavaher
    Hi, I am confused about the Power ratings of your DRV8412 motor driver IC . I have used DRV 8412 samples on our new PCB design and would like to know what maximum continuous current it could theoretically withstand before overheating. The data sheet suggests a 6A continuous output current per chip...
    on Jan 9, 2012

  • Forum Post: DRV8412 or DRV8432

    企鵝
    Hello DRV8412/DRV8432 to driver stepper motors,microstep can reach up to? (1/128 or 1/256 or 1/512) Thank
    on Feb 27, 2012

  • Forum Post: Re: DRV8412 or DRV8432

    企鵝
    So, you mean at what the maximum resolution is determined in accordance with the PWM accuracy I can achieve my code ? Thank
    on Feb 27, 2012

  • Forum Post: DRV8412 Overcurrent / CBC Issues

    Adam Vaccari
    Hi, We are using the DRV8412 configured in parallel-full-bridge mode connected to a DC motor. The OC-Adjust Resistor is set to 30k which according to the datasheet sets the maximum current before OC occurs to be 8.8A. M1=0, M2=1, M3=0 to select PFB CBC limiting. Here's a typical scenario...
    on May 7, 2012

  • Forum Post: RE: Eagle Libarys for DVR8412/8432 and 8801

    Adrianes den Toom
    Hi Christian, I have for DRV8412 without heatsink. PM me at adrianes@dentoom.de regards, AdT
    on May 9, 2012

  • Forum Post: experiencing DRV8412 motor driver issues

    Daryoush Sahebjavaher
    Hi, I designed a custom PCB that uses four DRV8412 ICs to drive my robots 8 DC motors (The four IC's are wired the same way - i.e. Dual full bridges complimentary mode (M3=0 , M2=1, M1=1), 6 Volt PVDD_X (all motor supplies are at 6 V), GVDD =12V ). I have followed all the recommendations suggested...
    on May 23, 2012

  • Forum Post: RE: design advice: capacitors on G_VDD pin on DRV8412

    Arnaud SIMON
    Ryan, In the rush, we have not corrected all of our previous electronic board. Thanks to you , we will avoid an error of copper. Now we are less in the fog. big thank you, Arnaud
    on Sep 3, 2012

  • Forum Post: what can i choose bldc motor controller kit?

    SeokYong Hong
    Hello. I'm a student in korea university. I'm in a first step project to control high speed BLDC motor, and my role is to select bldc control starter Kit. I found the BLDC motor in MAXON MOTOR corp. model No is EC25 351144. *url : http://test.maxonmotor.com/docsx/Download/Product/Pdf...
    on Dec 4, 2012

  • Forum Post: DRV8412/8432: how to control rotation direction and rotation speed?

    fang circle
    Hi all, I'm a little confused by datasheet and some example code. for motor control, I want to know, 1. under mode 1 (or mode 2), does one pwm control left bridge while the other pwm control right bridge? do i need do some special to avoid shoot-through? and how is direction controlled? and...
    on Apr 8, 2013

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