RE: DRV8305: Non-Linear PWM-RPM Relation when using High Frequency PWM
Hi Kursad,I will suggest also check all the calculations which are dependent on PWM frequency such as PWM duty cycle etc.From waveform, it looks like when speed is ramping up to 14-Bits value (16383)...
View ArticleDRV8701: 3oz copper and gate driver selection
Part Number: DRV8701I need to drive a brushed DC motor in a 12V battery powered robot. I am thinking that I want to use the DRV8701 over the UCC27201 for my robotics application. My thinking was:The...
View ArticleRE: DRV8323: DRV8323 - 50V or 60V max?
Hello Asif,Thank you for bringing this to our attention. It seems that the datasheet was corrupted and a lot of mistakes are now present. We are working to revert the datasheet to the previous state as...
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RE: DRV8303: Fault condition resulting in configuration reset
Hi Rick,The fault pin is typically asserted under transient load conditions. It does not remain asserted (see included image). Typically, one to three faults occur in sequence.
View ArticleRE: DRV8711: Number of PWM channels required
Hi Puneeth,It is possible to drive each motor with only one PWM signal, but additional circuitry may be required. Please take a look at this blog as an example. I hope this helps. Thank you.
View ArticleDRV8711: Number of PWM channels required
Part Number: DRV8711Hi, I want to control two brushed DC motors with DRV 8711 using the PWM mode. My doubt is regarding how many PWM channels does each motor require? Pin A IN1 and pin A IN2 require...
View ArticleRE: DRV8432: is 250W 24V brushed motor control possible?
Hi Stefan, How are you controlling the DRV84x2 what are your input signals? You mentioned motor driver fails every time. Can you please describe failure you are experiencing? Also we have an evaluation...
View ArticleDRV8432: is 250W 24V brushed motor control possible?
Part Number: DRV8432Hello,I need to controll a 250W 24V brushed motor. I am a mechanical engineer and am building a medium size autonomous vehicle.The problem is that I have not much experience in...
View ArticleRE: DRV8323: DRV8323 - 50V or 60V max?
Hi Asif, Please make sure you are looking at the latest revision of datasheet, April 2017. the link is: www.ti.com/.../drv8323.pdf I skimmed through it and datasheet agrees with the values Matt have...
View ArticleDRV8323: DRV8323 - 50V or 60V max?
Part Number: DRV8323Hello -I have custom hardware utilizing TIs InstaSPIN technology and a DRV8301 gate driver currently (plus an external current shunt amplifier for full three-phase sensing).I am...
View ArticleRE: Compiler: Keil
Hi Bunny, Yes, the motor manufacturer should provide this information. An example of a motor spec this information can be found here:www.ti.com/.../slvc597 Look for the TelcoMotion...
View ArticleRE: DRV8701: About the fire of DRV8701.
Hi user4705198, Is monitoring the mv voltage the chip's vm pin?>> Please monitor the VM pin at the DRV8701 with respect to the GND pin at the DRV8701. Another area to monitor is the SHx pin with...
View ArticleDRV8701: About the fire of DRV8701.
Part Number: DRV8701Thank you for your response.I developed a motor drive using the drv8701p.It is used in electric cars for children.Sometimes, however, the drv8701p chip fires.Where it occurs is...
View ArticleRE: DRV8305: Non-Linear PWM-RPM Relation when using High Frequency PWM
Hi Kursad, - At what switching frequency do you see this speed behavior improve? - For the 1x PWM mode on our device, do you see better speed performance using DIODE FREEWHEELING (COMM_OPTION register...
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RE: DRV8308: DRV8308
Hi Javier,This means that during intital speed-up, the device is operating in strictly Proportional gain mode. The SPEED register value is the gain applied to the difference taken between the CLKIN...
View ArticleDRV8308: DRV8308
Part Number: DRV8308Dear Sirs,We have a design with two DRV8308.We are adjusting the parameters for differents loads and speeds in very large range. We have a doubt with the Clock Frequency Mode we are...
View ArticleRE: DRV8301: Whetehr DC motor diver hardware have brake function or not?
Hi user4773354, To control the brake function, typically the 3 low side FETs are enabled. The PCB is capable of brake mode. The firmware must be written to activate it (not sure if one of the labs has...
View ArticleDRV8301: Whetehr DC motor diver hardware have brake function or not?
Part Number: DRV8301Customer is teting the EVM LP69M-1DRV-BNDL. They would want to know whetehr DC motor diver hardware have brake function or note. Thanks a lot.
View ArticleRE: DRV8301: DRV8301 Lock-Up Issue
Hi Richard, Apologize for the delay. Potentially the customer could use the high-side MOSFETs with the load referenced to ground instead of the low-side MOSFETs. This would allow correct power up...
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DRV8301: DRV8301 Lock-Up Issue
Part Number: DRV8301My customer is seeing the following issue and I do not understand how this can be happening:We are using the DRV8301 in our product, and recently we had a request from a customer to...
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