Hi Rick,
Do your experts have any recommendations for me ?
Hi Rick,
Do your experts have any recommendations for me ?
hello,
I am trying to find a motor driver to the FAULHABER 0308 sensor-less BLDC motor that i am using.
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i want to be able to spin the motor in 40000 rpm with a motor voltage of 5.5V
i have already purchased your DRV10963 motor driver , but it didn't spin the motor well.
i tried all the parameters there but it didn't reached even close to my desired RPM. i think that the problem was that the driver was not able to pass from open loop to closed loop because the BEMF in low RPM was hard to read.
do you have any recommendations for another motor driver that will be to handle that motor ?
thanks - SAM
The SPI pin locations comply with the BOOST-DRV8711 interface. I have reason to believe that the registers are never being written through the SPI interface:
I attempted to write the enable bit (register 0, bit 0), and I sent pulses on the STEP line. The outputs to the motors remained inactive.
What is the polarity of SCS? I have it coded as active high, according to the datasheet, but it is worth a sanity check.
Part Number: BOOST-DRV8711
Part Number: DRV8312
What are the current and voltage ratings of the body diodes in the DRV8312 half bridge circuits? I have seen comments for other driver ICs (e.g. DRV8813) stating that the body diodes are rated to the same operating conditions as the rest of the device, but I didn't want to just assume this was the same for the DRV83x2 family.
Would these diodes provide sufficient protection if the PVDD power supply was reversed? That assumes that the VDD and GVDD were still correct. Ideally there would be additional protection circuitry outside the DRV8312. I'm just wondering how the device would perform in the absence of additional protection circuitry on PVDD.
Hello Vladimir,
The DRV8844 and DRV8412 are not automotive rated hence would not be suitable. We have automotive rated devices that can better fit your customer's application. Please take a look at these options: Brushed DC Gate drivers and Brushed DC Drivers w/Integrated FETs. Please let us know if you have questions about a particular device. Thank you
Hello,
my customer started develop diesel engine controller (12V power domain) about month ago.
Now they looking for solution for throttle and solenoid control.
They choose NXP MC33926 and MC33816 as main competitors in this application.
I want to offer solution on TI components. I found 2 variants from TI DRV8844 and DRV8412 looks good in this application. But I'm not sure that it's a best solution.
Can anybody approve that my solution are best from TI? Or may be anybody offer something better?
My customer told me that solutions for this application typical is not a catalogue products, because it's automotive segment.
So I'm asking there - Do TI have a special solution for diesel solution.
Part Number: DRV8702-Q1
Hi, I have a question about the voltage of SH1. If nSLEEP=0, the output of SH1 is not in high-Z, the voltage measured is 0.8V,but it should be 2.2V(high-Z). Thanks.
Dear all,
A student is asking for a complete set (Launchpad + driver + Motor + Software ) for linear motor.
Could anyone suggest me these things please?
Thank you.
Kaustubh
Part Number: DRV8871
HI,
I like to integrate the device DRV8871 into our new product generation. Up to now we use a H-bridge with our CPU. To get a feed back of the rotation speed of the motor we set one N-FET on and all the other of. In this case we kann measure the EMK which is proportinal to the rotation speed. So we have some time making our PWM signal and speed up the motor and we have a little time with now PWM but wih grounding the BDC and after that measering the EMK. This value goes into a regulation loop for controlling the speed of our BDC.
If we use the DRV8871 I don't have an idea how to get the EMK value? Is there anyone to help me?
Best regards
FG
Part Number: DRV8832
Hello support team,
My customer is trying to use DRV8832 to drive the VCM by changing the VSET voltage from 0V to 800mV. But, it seems there is some dead band of the VSET voltage form 0V to 150mV. In this range, the VCM does not work since the output of DRV8832 is no change.
Is this normal operation for DRV8832? Could you please give me any advice to solve the issue?
Best regards,
Kaizawa