RE: DRV8825 Problem
Hi, Thank you for your response. We are using custom board. Connections are proper. Can problem of torque or current cause this problem of getting stuck or any other problem?
View ArticleDRV8825 Problem
HI,I am using DRV8825 for driving stepper motor, whose specifications are, 1.5A, 1.43ohms, Fs = 110RPM.When i am driving the motor, motor gets stuck at start only and if i rotate shaft by hand it...
View ArticleRE: DRV8832
Hi Aoyama-san, Sorry for the delay. Both the OCP (output short circuit to GND/VCC/other output resulting in outputs disabled) and the current limit (Vrsense >200mV for ~275ms) can be cleared by...
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Would you tell me about these questions?1) How long time does it take to become "FAULTn = Low" after OCP is worked?We suppose a process below;1. Output current of over 1.3A continue about 275ms. | 2....
View ArticleRE: Supply Voltage and Current for DRV8308
Hi Phil,We got the "go ahead" from TI customer support to unsolder the diode. We did so, but ran into the same problems as before. Do you have any other suggestions for us? Thanks a lot for your...
View ArticleRE: Supply Voltage and Current for DRV8308
Hi Charlie, If you previously saw the driver heating up, but now don't see that same behavior, that would lead me to believe the DRV8308 may be damaged. There isn't an easy way to isolate the driver...
View ArticleSupply Voltage and Current for DRV8308
Hello,I am using a DRV8308EVM and am attempting to supply 24V at the VM pin with a 60V, 5A MAX power supply. However, the board draws 3A by the time I've supplied only a few volts. I suspect a short...
View ArticleRE: DRV8825 Problem
Hi Aniket, There are a few items to try. First remove the motor and confirm the device is operating as expected. The voltage on the outputs will change as the step is advanced. Next please provide the...
View ArticleRE: BOOST-DRV8711 with f28027
Hi Can,All of the documentation for the BOOST-DRV8711 is available online. Click HERE to access the folder.Scroll down to the BOOST-DRV8711 Hardware and Software Files for schematics, layouts, and...
View ArticleRE: BOOST-DRV8711 with f28027
But there is nothing about LAUNCHXL-F28027 when I access that folder. Should I only use MSP-EXP430G2 with BOOST-DRV8711? Or will I be able to adapt 28027 to 8711? There is not much documentation about...
View ArticleRE: BOOST-DRV8711 with f28027
Hi Can,The User's Guide has a simple pin out diagram on page 3. You can also find the detailed schematic in the hardware design files.We unfortunately do not have any sample firmware for the 27.How is...
View ArticleBOOST-DRV8711 with f28027
Dear Sirs,I know that MSP-EXP430G2 works with BOOST-DRV8711 and LAUNCHXL-F28027 works with BOOSTXL-DRV8301 directly. But somehow, I have f28027 and BOOST-DRV8711 :)I want to spin a stepper motor with...
View ArticleRE: What is Twake, max time to wake from sleep for DRV8835?
Hi Lloyd, I will look into the wake time for VCC and VM and get back to you. Can you supply a schematic for the breakout board you're talking about?
View ArticleRE: What is Twake, max time to wake from sleep for DRV8835?
Thanks, no hurry. I'm just saying that should be in the datasheet. I can proceed without knowing Twake exactly, its a small part of the power budget, I'll just fudge it. The breakout board page is at:...
View ArticleRE: What is Twake, max time to wake from sleep for DRV8835?
Hi Lloyd, The recommended internal wake time from VCC transitioning from low to high is 40 us. Ramping VM does not add any delay internal to the device. However, you should consider any external...
View ArticleWhat is Twake, max time to wake from sleep for DRV8835?
I don't see that in the datasheet.A different chip the DRV8811 in "Section 7.7 Timing Requirements" specifies a maximum of 1mS. (Time from leaving sleep til a step input is accepted.) But the...
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RE: DRV8412 GUI connection.
Hello Wilson, Here is a picture of the .out file matching the gui. To make sure its all the same I reinstalled Controlsuit, and reflashed using 4 different F28035 Rev 1.3 controlcards, I used CCSV6...
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DRV8412 GUI connection.
Hello all,I am using a DRV8412 C2 Kit, and I am having issues with the GUI. I keep getting a connection issue with the TI board, I am able to connect the F28035 through CCS, I ran a couple of codes in...
View ArticleRE: DRV 8832
Hi Nigel, Assuming you meant absolute max voltage on the h bridge, it is 7V. There are brief periods as the current flows through the body diode that the voltage could be higher.
View ArticleDRV 8832
I am thinking of using the DRV8832 or similar in a novel way as an h bridge driver of a resonant tank for LF RFID. Due to the high voltages created at resonance what are mage voltage ratings on the h...
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