Clik here to view.
RE: DRV8701: Question on current recirculation in half bridge mode
Here attaches voltage on SH2.Normal operation: 24.1VIssue happens: 25.8V (Higher than power supply which is 24V)
View ArticleRE: DRV8701: Question on current recirculation in half bridge mode
Hi Alvin, We will investigate and reply soon.
View ArticleClik here to view.
DRV8701: Question on current recirculation in half bridge mode
Part Number: DRV8701Hi, TeamI got report that in half bridge mode of DRV8701, during motor decelerate, current recirculates back to VM and lift VM up.According to spec, in half bridge mode, current...
View ArticleRE: DRV8825: Large audio noise with 3 drivers enabled`
Hi Rick, Sorry my mistake. Should have set the motors to a hold position. New vid - goo.gl/.../mtEkepMRubK2pMqi8 Again, when there is only 1 or 2 motors the noise is very much reduced. Is there a...
View ArticleRE: DRV8844: As Bipolar Stepper Motor Driver
Hi Rav,I pointed out to the layout files as well to make sure you have proper routing since you have seen a fault.Could you please provide the following:What voltage are you operating at? What are your...
View ArticleRE: help to get more information and software
Have you tried contacting IR for more information about the part you listed? It was developed and sold by that company, not TI, so we do not have information for you regarding it. In general, InstaSPIN...
View ArticleClik here to view.
RE: DRV8305: timing to detect over current protection
Hi Yamamoto-san,Question 1:Figure 13 on page 27 of the DRV8305 datasheet shows the following:So, to answer your question, the longest possible interrupt time would be tblank + tdeglitch. Here,...
View ArticleRE: DRV8303: Ground Isolation with Host MCU
Hi Eclipze, I would agree with Murat above, this is most likely an issue of both bypass capacitance around our device as well as significant ground bounce on the ground plane as the power FETs are...
View ArticleRE: help to get more information and software
thank you for your response and asking for a little tip.Information about this module is only on:www.irf.com/.../piipm15p12d007.pdf . Please tell me who is it now manufactures and how to contact them....
View Articlehelp to get more information and software
we purchased piipm50p12b004-Programmable Isolated IPM IPM(Bulletin I27146 06 - Oct. from IRF ). Unfortunately this module is not a complete description. Tell me how you can get the full description?...
View ArticleRE: DRV3201-Q1: ADREF Voltage
Hi Ushikubo-san, We do not expect any parameters to degrade based on the input you specified (4.9V to 5.1V), however many parameters are based on the actual voltage of ADREF, so the clamp voltage will...
View ArticleDRV3201-Q1: ADREF Voltage
Part Number: DRV3201-Q1Hello, Please answer following question from customer. Customer is applying VDD5 of TPS65381-Q1 to ADREF terminal of DRV3201-Q1.Specified accuracy of VDD5 is +/-2%(4.9V to 5.1V)...
View ArticleRE: DRV8711EVM: Tracking a 'home position' while motor is in operation
Hi Griffin, The DRV8711 does not have this ability. The firmware can be used to track the steps issued to determine the home position. Please look at the DRV8825. This device has integrated FETs and a...
View ArticleDRV8711EVM: Tracking a 'home position' while motor is in operation
Part Number: DRV8711EVMHello,I am looking to purchase a stepper motor and controller with adjustable speed and capable of tracking the passing of a home position. I am interested if there is a signal...
View ArticleRE: DRV10975: DRV10975 SPEED CONTROL ISSUES
Hello, Comments on question 1: Can you measure phase current and provide waveform. Do you see reduction in phase voltage ? Comments on question 2: Can you increase acceleration current limit, what does...
View ArticleClik here to view.
DRV10975: DRV10975 SPEED CONTROL ISSUES
Part Number: DRV10975Dear TI Guys: I use drv10975 for Air-condition Drain pump. Motor parameters as follow:1. rated voltage:12v2. rated current:0.4A ; Peak current:1A3. Max speed;...
View ArticleRE: drv8305: HS and LS Gate Drive Control settings, driving mosfets correctly
Hi Roman, 1.) Using a lower gate drive current will mean that your MOSFETs are slewing slower than they would with 2-3 Amp peak gate drive. 2.) This is dependent on the switching losses in your MOSFETs...
View Articledrv8305: HS and LS Gate Drive Control settings, driving mosfets correctly
Part Number: drv8305Hi. I am driving mosfets with 80nC total gate charge using DRV8305 in FOC ESC. PWM frequency is 45kHz. I have several questions.1. As I understand I need 2-3 Amp peak gate drive...
View ArticleRE: DRV8303: Ground Isolation with Host MCU
Thanks both. I would like to ensure the motor current for the ground path follows the intended part to minimise EMC and possible ground bounce with the MCU. What I am unsure about, is how to provide...
View ArticleClik here to view.
DRV8303: Ground Isolation with Host MCU
Part Number: DRV8303I am looking to isolate the ground between the DRV8303 and the host MCU, to prevent motor ground current passing through the MCU. I had tried to provide some isolation with the...
View Article