Other Parts Discussed in Thread: DRV8821 Hello,
We have a design with a DRV8821 driving a Shinano SST43D1100 rated at 1A. We are driving the motor at 500 ma, using the 16 ustp/stp mode and the motor rotates too far in a simi-random fashion. Measured…
According to the datasheet, Vcp should be 12V relative to Vm, however on my board I'm getting Vcp=-.7V relative to Vm, when Vm=12V. What could account for this low voltage? I think I'm getting some shoot through since the upper transistors of the H bridge…
Other Parts Discussed in Thread: DRV8821 , DRV8825 Dear Sir/Madam:
I encountered a problem in our new PCBA with DRV8821. It works in previous PCB version, and there are some modification on other circuit, and DRV8821's RESETn connnection (to high voltage…
Other Parts Discussed in Thread: DRV8823 , DRV8821 Hi
I am presently using TI DRV8821/DRV8823 motor driving module. the problem i am facing is unpredictability of the output at the motor output pin . I am using the DRV8823 MODULE application software…
Hi Rick,
Thanks a lot for your reply - I was able to get the file. Unfortunately I was hoping that I could access the serial commands which the windows user GUI sends to the DRV8821EVM. The included source code is for the micro. Is it possible to get…
Other Parts Discussed in Thread: DRV8821 , DRV8824 For our application, we are driving two stepper motors. The DRV8821 looks like a good solution. However, I have two questions about how fault conditions ( Undervoltage, Overtemperature, and Overcurrent…
Other Parts Discussed in Thread: DRV8823 , L293D , DRV8821 I am looking at the possibility of incorporating either DRV8821 or DRV8823 in a new design that I am working on. I need to control two stepper motors (unipolar/bipolar & permanent/hybrid stepper…
Other Parts Discussed in Thread: DRV8821 , DRV8821EVM Hi All,
Good Day.
We designed a circuit which we can run two Double stack stepper motors using DRV8821. Without current limit for short duration we have not seen any noise on the current waveform…
Hi Mahendra,
A design around the DRV8821 will most likely benefit from a layout with at least 2 layers. Ideally you would want to use four layers for better thermal impedance but we understand the cost of such board may be prohibitive for certain cost…
Other Parts Discussed in Thread: DRV8821 Hi,
I have a question about the DRV8821. At page 5 of datasheet - it says motor PWM frequency is minimum 45KHz. What does it mean?
Does it mean I can't drive properly the stepper motor PM35S-048 ( http:/…
