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DRV8305-Q1: SHX maximum voltage
Part Number: DRV8305-Q1Dears:based on datasheet, SHX max voltage can achieve 45V, but It has PVDD+5V limitation, I don’t understand how does the PVDD+5V limitation work? Could I have the internal...
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RE: DRV11873: Question of PWM resolution and motor contorl
HiI'd like to add waveform info.BestRegards
View ArticleRE: DRV8833: DRV8833 UVLO operation
Hi Cafain,[quote user="cafain"]1.When the VM rises above the UVLO threshold, please tell me the delay time until motor drive operation resumes?[/quote]Assuming nSLEEP is set to a logic one when VM...
View ArticleRE: DRV8711: External FET Selection
Hi Michael, For questions 1 and 2, we will contact the FET experts. For question 3, we will check and get back to you.
View ArticleRE: DRV8844: As Bipolar Stepper Motor Driver
Hi Rav, Sorry for the delay. Adding a larger bulk cap may help depending on the needs of the rest of the system. Have you been able to lower the sense resistor? Do you have any further updates?
View ArticleDRV8844: As Bipolar Stepper Motor Driver
Part Number: DRV8844Hi TI Motor Team:I am using DRV8844 as a bipolar stepper driver to do a motor load test by combining the quad half bridges(IN 1-2 & IN 3-4) in two pairs.Unfortunately my test so...
View ArticleRE: DRV8305-Q1: Maximum Temperature Rating Question
Hi Jeff, We will investigate and reply soon.
View ArticleRE: DRV8305: Problem on nFault and GHA output
Hi Tao_2199,[quote user="Tao_2199"](1) When they configured VREG and EN_GATE at power on, nFault is toggled with about 64us period.(It seems that when EN_GATE is high, nFault stop to toggle and goes to...
View ArticleRE: DRV8711: External FET Selection
Michael,Whether or not the FET can handle this pulse depends on both the FET's pulsed current ratings (to which you can refer to the horizontal lines in the SOA), but also the thermal environment of...
View ArticleRE: DRV8711: External FET Selection
Hi Brett,Since we're talking here about emergency over-current condition, the lasting time of the pulse would mostly depend on Deglitch Time setting of DRV8711 controller. The worst case for that...
View ArticleRE: DRV8711: External FET Selection
Michael, For such short pulse duration, I don't think that should be a problem at all. You can refer to the pulsed current rating IDM, which suggests that the part can handle up to 370A for up to...
View ArticleRE: DRV8711: External FET Selection
Brett,Thank you for detailed explanations.I think my questions 1 and 2 are now answered.Michael
View ArticleRE: DRV8711: Pre-driver fault occurs everytime
Hi user4873309, This does not appear to caused by the spike. Do you have a scope with more channels or a second scope? If so, please provide all 4 GLS signals with respect to the nFAULT asserting....
View ArticleRE: DRV8711: External FET Selection
Hi Michael, 3. And more generic question. What's an anticipated response time of the OCP circuitry once OCP deglitch timer has expired? The design team says the delay should be <100ns.
View ArticleRE: DRV8711: External FET Selection
Rick, Thank you. My questions are all answered now. Michael
View ArticleRE: Ringing on output of DRV8432
Hi Rick, I added a snubber consisting of a 10 OHM resistor and a 0.1 uF capacitor between PVDD and GND. But, I didn't see any ripple reduction from the DRV8432 output voltage. But, adding the snubber...
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Ringing on output of DRV8432
Hello, I am using the DRV8432 in my design, and I am getting a lot of ringing on the output at the solenoids, and motors that I am controlling. I have followed the recommended design that was given by...
View ArticleRE: Low Inductance Motor control product
Hi Jesse, What is the VM voltage and power of the motor?
View ArticleLow Inductance Motor control product
Hello I am looking for some advice. I am trying to figure out what is the best TI product for my application. I have a custom built 16 pole (8 pair) motor approximately 0.110 ohm phase to phase and...
View ArticleRE: DRV8305-Q1: SHX maximum voltage
Hi Rick：Could I have which circuit will be damaged when over PVDD+5V? Thanks.
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