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DRV8711 - Slow Decay works in a strange way
Apologies if this has been discussed before but...........I couldn't find the answers in the datasheet or forum.I'm trying to reduce motor heating and noise on stand still by firstly reducing the...
View ArticleRE: DRV8825 EV board driver issue
Hi Jacky, Can you move the folder to the C: drive and try installing again? There may be a problem when installing from another drive.
View ArticleRE: DRV8825 current limiting issue
Rick,Running in fast decay fixed the problem. Thank you!Steve
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DRV8825 current limiting issue
I am using the DRV8825 with a stepper motor, and have experienced an issue when the motor is standing still. Below is the circuit schematicThe schematic does not show a 1.5kohm resistor between the...
View ArticleRE: DRV8711 - Slow Decay works in a strange way
Thanks Rich,I'm still a little confused how with slow decay we seem to be able to track the current amazingly well in a half stepping fashion (even though we are 1/16th micro stepping) but not to the...
View ArticleRE: DRV8711 - Slow Decay works in a strange way
Hi Nick,It is sometimes confusing. Please note that while the waveform looks like half step, it is not really. The DRV8711 sets current at 71% and 100% for half step. This appears to be 50% and 100%....
View ArticleRE: DRV8839 - does the nFAULT pin exist?
Hi Kayiita, Thanks for the post, and sorry for the confusion. The nFAULT pin does not exist. It was a copy/paste error introduced during datasheet conversion last year. It will be corrected in the next...
View ArticleDRV8839 - does the nFAULT pin exist?
I'm checking out some BDC drivers and am confused by something on the DRV8839 datasheet (http://www.ti.com/lit/ds/symlink/drv8839.pdf)The simplified diagram shows an nFAULT pin coming back from the...
View ArticleRE: DRV8884
Thanks Rick.Im new to motor design. Could you please detail what accuracy are you mentioning?
View ArticleRE: DRV8312-69M-KIT code changing
Hi Nimash, You can check the DRV8301 boostpack www.ti.com/.../boostxl-drv8301 and all it's resource. Maybe it will be easy to use the launchpad as the inputs source. And this boostpack board is DRV8302...
View ArticleDRV8312-69M-KIT code changing
Dear sir,I am using DRV8312-69M-KIT kit right now. I am trying to tap the inputs which given to DRV8312 on the development board, give then as inputs to another my own circuit which includes DRV8302...
View ArticleRE: Operating a set of Proportional Solenoid Valves
Hello Mr. ZuoOn page 23 of the DRV8860 datasheet it seems to imply that only a few different PWM values may be set within the device. I assume these are the 8 levels you mentioned. Could you point me...
View ArticleRE: Buck Converter of DRV8301 Reference Voltage
Dear Sir, I'm facing the same problem as vsense = 1.27V instead of 0.8V in drv8301 and could you explain how to solve the issue and should solder the thermal pad to gnd or is their any...
View ArticleRE: DRV10983 - Abnormal Kt lock reset
Hi Krushal,I had every fault bit checked, except for abnormal BEMF.I hadn't realized that this bit corresponds to the abnormal Kt bit in the 0x27 register. I have checked every fault now and I am still...
View ArticleRE: Operating a set of Proportional Solenoid Valves
Hi Caleb, Yes. The internal 8 level PWM is fixed. What I mean is to do a SPI fast ON/OFF control for each channel. However I just checked it cann't get to higher PWM if we want more duty cycle...
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Operating a set of Proportional Solenoid Valves
Hello! I have an application requiring me to individually control up to 5 miniature proportional valves with the output of a microcontroller (0-5V). Preferably this will be done by up to 5 PWM channels...
View ArticleRE: DRV8711DCPR
Hi Jagdish, This sounds like the current setting may be incorrect. What are your register settings? What is the sense resistor value? What is the current specification for the motor?
View ArticleRE: Buck Converter of DRV8301 Reference Voltage
Anuroop,Thermal pad is required to be soldered to GND of the PCB. The DRV8301 establishes an electrical GND connection through the thermal pad.
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