DRV8881: DRV8881P Fault trigger
Part Number: DRV8881For circuit card testing, I am trying to trigger the fault signal from the DRV8881P. I thought I could just increase the load past the current limit on the drive output, but that...
View ArticleRE: DRV8800: the maximum fPWM for Logic input PWM frequency(Enable)
Rick sanThank you for your reply!How much is the maximum usable duty cycle range in case of fPWM=100kHz?We think that it depends on pulse width to ensure detection.How much is the pulse width to ensure...
View ArticleRE: How can I set the register of DRV8711
Thank you! The VM voltage is 24V,and the sense resistor value is 0.05 ohm.register setting:CTRL:0x0129 (DTIME:400 ns; ISGAIN:Gain of 10; EXSTALL:Internal stall detect; MODE:1/32 step; ENBL:Enable...
View ArticleRE: DRV11873: Problems of design by DRV11873
Hi Krushal, Thank you for your reply. About the things you need to analyze this problem, I have sent email to our customer. I will reply to you when they give me answers. Thank you.
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DRV11873: Problems of design by DRV11873
Part Number: DRV11873Dear,Our customers use DRV11873 to drive brushless motor. But they encounter problems: the motor can rotate with the current below 0.3A, but the motor shakes severely. When the...
View ArticleRE: How can I set the register of DRV8711
oh! The BEMF pin of my circuit board connect 1μF capacitance. Does this cause the circuit don't work?
View ArticleHow can I set the register of DRV8711
I use the DRV8711 for diving stepper motor,use the CSD88537ND for pre-drivers .The motor cann't work and the voltage in the stall is low .I considered configuration of the registers.But how can I...
View ArticleRE: DRV8711: Stepper Driver - Current Waveform Has Double Peaks
Hi Rick,I think I found the problem while checking the pins you suggested.The VM and RESET pins were fine.The V5 pin was showing 4-6V high frequency noise. I had left the cap off because the block...
View ArticleRE: DRV8833: Sleep pin question
Hi David__ , 0) The CC3200 operates with 3.3 volts. I've connected the nSLEEP pin to the CC3200's GPIO. If I set the nSLEEP GPIO pin to high, which is 3.3V, does the motor driver runs (not sleeping)?...
View ArticleRE: DRV8412: DRV8412 about the dead time
Hi Mickey, The dead time cannot be changed. With integrated FETs, there is generally no need to change the dead time. The device was designed for high PWM frequencies (up to 500kHz) Dead time was...
View ArticleDRV8412: DRV8412 about the dead time
Part Number: DRV8412Hi Team,The customer is using DRV8412. The dead time is 5.5ns when IO is 5A on page 8 of the datasheet. Can the dead time be changed? If it can be changed, how to change the dead...
View ArticleRE: DRV8307: DRV8307 about the Locked Rotor issue and PWM control issue
Hi Mickey, Our expert on this device has been notified and should reply soon.
View ArticleRE: DRV8881: DRV8881P Fault trigger
Thanks Rick! I wasn't sure how far I'd have to go to generate an overcurrent fault, but it looks like I will go with choice #1. I just want to make sure there is no chance of damaging it if I do this?
View ArticleRE: DRV8711: Stepper Driver - Current Waveform Has Double Peaks
Hi Omacitin, Glad to hear the problem has been solved. 6V on the V5 output violates the absolute maximum voltage rating. The device may have been damaged.
View ArticleRE: How can I set the register of DRV8711
Hi user4849193, The 1uF could be affecting device operation. Please change it to the recommended 1nF. In addition, please change the off time register to 0x2030 (24us off time). An off time of 1us is...
View ArticleRE: DRV8881: DRV8881P Fault trigger
Hi Katy, The device is designed to protect the outputs against short circuits. There should be no problem.
View ArticleRE: DRV8881: DRV8881P Fault trigger
That's what I figured, but I just wanted to be sure. Thank you for your help, Rick!
View ArticleRE: DRV8307: DRV8307 about the Locked Rotor issue and PWM control issue
Hi Mickey,Responses to the customers questions are below. Q1: Locked Rotor QuestionRLOCK is considered a FAULT. For normal stopping operation, the motor should not flag an RLOCK fault. If the BRAKE...
View ArticleDRV8307: DRV8307 about the Locked Rotor issue and PWM control issue
Part Number: DRV8307Hi Team,The customer is using DRV8307. He has some qusestions as belows.Q1: Locked Rotor question:The customer refer to 7.3.11.6 Rotor Lockup (RLOCK) of the datasheet. If the motor...
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RE: Issue with DRV8313 Evaluation Module Software
Rick,The comm error is consistent on more than one computer. Both computers are running Windows 10 and USB 3.0 ports. The FTDI driver I am using is the latest from FTDI (See below)/********FTDI Info...
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