Clik here to view.
DRV8834: Timing requirements of twake
Part Number:DRV8834Hi,Now I am study DRV8834 for stepper motor.But, I am confused about the Maximum wake up time.It define the wake up time as nSLEEP inactive to STEP in datasheet and it's Maximum...
View ArticleClik here to view.
DRV8305-Q1: CSA programmable blanking feature
Part Number:DRV8305-Q1Hi team,I would like to know the purpose and the actual benefit of using CSA blanking feature. - What is the background of why blanking feature is implemented?- Could you give me...
View ArticleDRV8711: Increasing torque to Stepper Motor
Part Number:DRV8711Hi,I've written code to drive a 4 Amp stepper motor. I'm using an MSP430 launchpad with a boost-drv8711. Everything is working well, except it doesn't have enough torque for my...
View ArticleDRV8833: Current control PWM frequency
Part Number:DRV8833Hi,My customer is using DRV8833.Could you let me know the max/min value of current control PWM frequency, please?Typ value is showd as 50kHz at Ta=25 in datasheet.Customer wants to...
View ArticleDRV8308: Negative Spike on ISEN Input
Part Number:DRV8308I have read several application notes which indicate that there will be a negative spike on the ISEN input due to parasitic PCB inductance during current recirculation. In addition,...
View ArticleClik here to view.
DRV8308: motor current not stable
Part Number:DRV8308Hi, the customer is using DRV8308 to control a BLDC. VDC=28V, IDCmax=10A. The motor is powered by a battery.In 120 commutation mode, the current is sometime high and sometime low, it...
View ArticleDRV8711: DRV8711 sleep mode and ENBL setting
Part Number:DRV8711Hi team,My customer is evaluating the DRV8711 now. When the motor is stable, they want to set it into low power mode. Fromt the datasheet, the chip has sleep mode, and make some...
View ArticleDRV8818: The logic pin internal pull down resistor 1Mohm
Part Number:DRV8818Hi team,My customer is using DRV8803, DRV8844 and DRV8818. We want to check why the DRV8818 logic pins internal pull down resistor is 1Mohm, but the DRV8844 and DRV8803 internal pull...
View ArticleDRV8811: DRV8811 Issue With Microstepping
Part Number:DRV8811My customer asked the following question:Can the driver chip support switching back and forth between full step mode and quarter step mode in one running sequence? For example, set...
View ArticleDRV8711EVM: Is source code available for the EVAL Board ( DRV8711EVM )
Part Number:DRV8711EVMTI,Planning on experimenting with the DRV8711 and have a need for the source code associated with the DRV8711EVM. Is it available? Location?Thanks,Greg Nelson
View ArticleClik here to view.
DRV8323: InstaSpin LAB (proj_lab02c) Measures Rs very high
Part Number:DRV8323Trying to identify a motor using the instaSPIN labs. Getting to lab02c, the RS, motor resistance, which was measured in lab02b to be around 0,06 ohms, is measuring 2e+9. Expect to...
View ArticleDRV8835: absolute maximum ratings
Part Number:DRV8835Hello,Are there absolute maximum ratings for AOUT1/2 and BOUT1/2 voltage ?Our customer cares about the spike voltage at above output pins that is generated when the motor is...
View ArticleCCS/DRV3205EVM: the EVM didn't work
Part Number:DRV3205EVMTool/software: Code Composer StudioWe tested the DRV3205EVM with LAUNCHXL2-TMS57012 LaunchPad(the software is drv3205-drv3205evm.7z), but found that:The power supply part of...
View ArticleMotor Controller recommendation for high current applications
Hello Team,I am working with a customer who is looking for a control solution for his project. This is a motor controller/ braking unit. This can be up to 24V and 320Amps. and would like to be able...
View ArticleCCS/DRV8305-Q1EVM: Example code for PWM IN?
Part Number:DRV8305-Q1EVMTool/software: Code Composer StudioHi All,I'd like to use the PWM IN line on the DRV8305-Q1EVM to control the KRPM reference. I can't find any example code to get it up and...
View ArticleCCS/BOOSTXL-DRV8305EVM: BOOSTXL-DRV8305EVM or BOOSTXL-DRV8323RS SPI 3 wire...
Part Number:BOOSTXL-DRV8305EVMTool/software: Code Composer StudioHello,does the DRV8305 and/or DRV8323 support SPI in 3-wire mode?Thanks!
View ArticleDRV8320: Bootstrap Cap with Drv8320
Part Number:DRV8320´Hello,I have a technical-question about the Bootstrapping at the DRV8320, how is this managed with only one small capacitor at "CB" do all Three swithces use the capacity only of...
View ArticleDRV11873: OCP function at start up
Part Number:DRV11873HiCould you please give me your expertise for the following question?If Rcs is 3.3Kohm, OCP threshold would be set as 3A(typ) at start up.According to the datasheet, 100% duty...
View ArticleDRV8842EVM with labview
Looking for API or information to enable interfacing single or multiple DRV8842EVM boards with labVIEW.
View ArticleDRV8307: BLDC starts and spins up to speed, but then shuts off and coasts
Part Number:DRV8307The motor spins up and the 8307 outputs LOCKn. Then the device loses lock and coasts down to almost stopped. then it starts again on its own and repeats the process. These repeats...
View Article