Part Number: DRV8701 Tool/software: Dear teams，
When using DRV8701P to drive a DC brushed motor and measuring the GH pin with an oscilloscope, an abnormal waveform was observed.
PWM control frequency 20KHZ, powered by DC24V. The test waveform is as follows…
Part Number: DRV8701 Tool/software: Dear all.
Hi. I'm Moon
I am currently working with the DRV8701P motor driver and have some inquiries regarding the maximum chopping current that can be achieved with this IC.
Based on my calculations, I have…
Part Number: DRV8701 Tool/software: Hello
I have developed motor driver board using DRV8701, everything works, however the MOSFETs are getting too hot. I want to understand why and how i can optimize this.
Application details:
- VCC = 24V
- VREF = 1…
Part Number: DRV8701 Hi,
In attached DRV8701 TI PSPICE output waveform with all default settings ,18V 6mA profile Vgh2 is expected to be 0V but it is High for some time.
Hi Amirul,
The DRV8701 has integrated solutions to help mitigate back-EMF issues. Please see the following app note on how these solutions can help.
"One approach to prevent this issue is to use the motor driver’s braking mode. This mode disables the H…
Part Number: DRV8701 Tool/software: Hello,
My customer uses TI motor drivers to drive their motors in a Drive/Coast fashion. They mentioned that there are no problems for a single motor but face steering issues for multiple applications (like two wheels…
Part Number: DRV8701 Tool/software: I have used the DRV8701 in the past with much success, but this is the first time I have attempted to the DVDD 3.3V LDO as the primary supply for my design. I cannot measure any voltage on the DVDD pin. I did made a…
Michael,
Yes, according to that other E2E thread this is expected behavior, it is part of the design of the device. When nFAULT goes high after the pulse it indicates the device is awake and ready to function normally. I recommend just ignoring the nFault…
Part Number: DRV8701 Hi Team,
The waveform collected by SO when the motor is short-circuited is as follows:
Examples of SO waveforms in the manual are as follows:
When a peak current occurs, it is observed in the manual that SO has a climbing process…
