UC3638: Changing the reference voltage results in unexpected behaviour
Part Number: UC3638I am using the UC3638 in the 20 pin SOIC package.I'm using a single supply (+12V) driving an 'H' bridge as per the application note for the TEC controller.The INV pin is driven via...
View ArticleRE: DRV8711: Pre-driver fault occurs everytime
Hi user4873309, What PDF do you get (APDF, BPDF, or both)? Please try the following: Place 120 Ohm resistors in series with the low side gates. Set the dead time to 850ns per section 8.1.2 Lower the...
View ArticleRE: DRV8711: Pre-driver fault occurs everytime
Hi user4873309, Sorry, I neglected your second question. Do you need 1/256 microsteps? If not please try decreasing the number of microsteps with all mixed or auto mixed decay.
View ArticleRE: DRV8711: Question regarding minimum low side voltage on A2LS and B2LS
Hi Doug, Can you provide a scope capture of this? Are you using a differential probe to measure from the A2LS and B2LS to the device pin?
View ArticleDRV8711: Question regarding minimum low side voltage on A2LS and B2LS
Part Number: DRV8711The "Absolute Maximum Ratings" section in the data sheet for the DRV8711 says that the minimum voltage on A2LS and B2LS is -0.6 Volts. Can you tell me how to achieve this during...
View ArticleRE: DRV8825EVM Software Installation Issue
Hi Stephanie, For the earlier version, please set the compatability mode of the setup.exe file to Windows XP service pack 3 and report the problem is corrected.
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DRV8305-Q1: Maximum Temperature Rating Question
Part Number: DRV8305-Q1Dears, Datasheet Section6.1 Absolute Maximum Rating show max junction temperature is 150 centigrade for DRV8305xQPHPQ1.And in section6.5 show the over temperature warning and...
View ArticleRE: DRV8711: External FET Selection
Rick, Thank you! Both answers are very informative. I also have a question regarding overcurrent protection of the external FETs. To be more specific let's take a look at the part used on DRV8711EVM...
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DRV8711: External FET Selection
Part Number: DRV8711Hi,I'm going through the DRV8711 datasheet and have some confusion regarding the equation (3) in the section 7.3.9, External FET Selection.It's generally clear that this equation...
View ArticleRE: DRV8825EVM Software Installation Issue
Hi Rick, I did finally have some success after running the program in XP compatibility mode. After completely deleting and re-installing the slv342 version, I found that there was no more setup.exe...
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RE: DRV8711: Pre-driver fault occurs everytime
Hi，RickThanks for your reply.I need to use 256 microsteps, yes. and I tried your parameters, tested with 47 Ohm and 120 Ohm resistors on low side gate. I still get the error and even run less than one...
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DRV8711: Pre-driver fault occurs everytime
Part Number: DRV8711Hi, I'm using DRV8711 to drive multi types of stepper with 48V power supply, and the rms current range is 1.5A~5A, these motors need to work in variable speed environment with high...
View ArticleDRV8833: DRV8833 UVLO operation
Part Number: DRV8833Hi,Let me check about UVLO operation of DRV88331.When the VM rises above the UVLO threshold, please tell me the delay time until motor drive operation resumes?2.When UVLO is...
View ArticleDRV8305: Problem on nFault and GHA output
Part Number: DRV8305Hello, Regarding to nFault and GHA output on DRV8305, my customer is asking some question.They have some problem at driving motor on their application.(Their conditions on...
View ArticleRE: DRV3201-Q1: CS amplifier Gain Drift and Shift Buffer Offset Drift
Hello Will-san, Please let me known your status. Best Regards.
View ArticleDRV3201-Q1: CS amplifier Gain Drift and Shift Buffer Offset Drift
Part Number: DRV3201-Q1Hello, Please correspond following question and request from customer. 2nd Stage Gain Drift vs. temperature.Could you supply the graph that shows the relationship between...
View ArticleRE: DRV8305: Is there switching mode we must not control?
Hi Riveros-san,Thank you for your reply.I concern and wonder if there may be bad control mode to activate DRV8305 abnormaly.I think that we should take care the relationship between FET motion and...
View ArticleDRV8305: Is there switching mode we must not control?
Part Number: DRV8305Dear all,I think to drive this device with 6-PWM mode.Is there switching mode that I must not control?I concern about charging current to VCPH-PVDD cap and VCP_LSD-GND cap.I concern...
View ArticleRE: DRV8305-Q1: SHX maximum voltage
Hi Haiwen, Correct. If SHx exceeds 17V with PVDD=12V, the device could be damaged.
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