RE: DRV8800: DRV8800 Abnormal output, can not be used normally
Hi Ming, How many products are showing abnormal operation? How many are operating properly? Can you provide any scope captures of the current or voltage at the outputs and at VCP? Ideally, please...
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DRV8800: DRV8800 Abnormal output, can not be used normally
Part Number: DRV8800hi all During the use of DRV8800, some products were wrong. Under normal circumstances, the voltage between OUT+ and OUT- is 11.3V, and the device supplies 12V. When abnormal, the...
View ArticleRE: DRV8884: Motor Current not stable
Hi uhtis, Can you confirm the TRQ pin is set to 1? If TRQ=1, the current should be set to 26.5mA. When operating at 53mA, this is similar to operating at the 5% current at 1A. Please note the current...
View ArticleRE: MSP-EXP430G2: Cannot read the data of DRV8711 on BOOST-DRV8711
Hi Kaka, Are the jumpers configured per section 3.2.1 of the user guide? Please note jumper P1.6 can affect operation of SDO.
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MSP-EXP430G2: Cannot read the data of DRV8711 on BOOST-DRV8711
Part Number: MSP-EXP430G2Hi TI Experts,We met the following issue now. When I evaluated the BOOST-DRV8711 with MSP-EXP430G2 and default source code and GUI which TI provided on Web site, the GUI could...
View ArticleBOOST-DRV8711: what is the response time of DRV8711 to reach position ?
Part Number: BOOST-DRV8711Hi, How long time the DRV8711 took to execute step move?Lets take an example,Configuration: 16 - usteps, speed - 240 RPM with no_load, step_index input - 4. How long should...
View ArticleRE: BOOSTXL-DRV8305EVM: Call FAST estimator firmware in TMS320F28027F's ROM...
The only way you would be able to do this would be to use an InstaSPIN-enabled C2000 device as processor-in-the-loop, calling EST_run() from the device itself. We do not provide any FAST library for...
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BOOSTXL-DRV8305EVM: Call FAST estimator firmware in TMS320F28027F's ROM with...
Part Number: BOOSTXL-DRV8305EVMHi,Our project needs to be done in MATLAB / Simulink, so we won’t write code in CCS directly.We want to use only the FAST estimator firmware like this:How can we...
View ArticleRE: DRV8823: Unable to control the motor using DRV8823 module
Hi Swapnil, If the transaction was successful, the outputs should be xOUT1=H and xOUT2=L. You should be able to measure this with a DMM and with the motor disconnected. The clock does not look very...
View ArticleRE: DRV8823: Unable to control the motor using DRV8823 module
Thanks for the reply. I think it looked noisy in that picture because of the scale. When I zoom in, it is pretty clean (as well as all the other signals). Could it be over current issue? but my Out...
View ArticleRE: DRV11873: Lock Detection functionality
Na Na,Sorry for the delay. Message got lost in holiday activities.1. For the false lock to occur the FG frequency must be close to the internal clock frequency. It's the internal clock frequency that...
View ArticleDRV11873: Lock Detection functionality
Part Number: DRV11873HiAccording to SLVA778, FG frequency at multiples of internal sampling clock can result in false lock conditions.1.Does it mean if FG matches N x 101.6Hz, lock detection would be...
View ArticleRE: DRV8823: Unable to control the motor using DRV8823 module
Hi Swapnil, Overcurrent is unlikely unless you have a component connected to the outputs that would draw >1.5A for >2.5us. Large capacitors, zeners or TVS with incorrect voltage ratings, or...
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DRV8823: Unable to control the motor using DRV8823 module
Part Number: DRV8823Hi,I am trying to control a DC motor using DRV8823 module but I cant it working. VM = 12.0 VRsense = 0.66Ω, Vref 3.33V ( I shorted V3P3 with ABVREF and CDVREF) I used same...
View ArticleDRV8332: need help estimating power usage
Part Number: DRV8332Hello,We are using the DRV8332 motor driver in a design that is getting ready to go into small quantity production. We need to do a thermal analysis on the design and therefore I...
View ArticleRE: DRV8823: Unable to control the motor using DRV8823 module
Hi, Thanks for your help. I got it working My data signal was being sent at the exact same time as the rising edge of the clock. I added the phase delay for the clock and it fixed the problem. Thanks!
View ArticleRE: DRV8332: need help estimating power usage
Hi Robbie, Have you measured the current in the motor to determine you have 3A? How far off do you think you are? There are a few items that can help improve the calculation or improve the performance:...
View ArticleRE: DRV595: Differential Input
Hi Shawn, thanks for the response (I'm working with Sukwon). I'm still puzzled, though, as the data sheet says the common mode input range is from 0.5 to 4.5V, and there are several plots showing...
View ArticleDRV595: Differential Input
Part Number: DRV595Hello-I am using DRV595 to drive TEC. In the datasheet, it says "To use the DRV595 with a single-ended source, use a voltage divider to bias IN- to 3.0V, and apply the single-ended...
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