DRV8805 Output Sequence
HiMy customer is using DRV8805. He uses DRV8805 with 2 phase excitation. He has the following question. Could you answer this questions? 1. Which step on the table will be DRV8805 by "DIR=0->DIR=1"?...
View Articledrv8412 and drv8432
Hi, I have two brushed dc motors in series and the following link lists all the specifications. I will be running two 19.1V motors at 24V max www.pittman-motors.com/.../14206-Brush-DC-Motor.aspxI was...
View ArticleDRV8301-HC-EVM external current sense amps have reversed polarity?
Hi,It appears from the schematics of the DRV8301-HC-EVM (rev D) that the external current sense amplifiers are connected such that positive current will cause a negative voltage waveform (that is,...
View ArticleBLDC Motor Driving using MSP430
Hello,I am trying to control a 3 Phase BLDC motor using DRV8313. But the sample code available at TI site does not include full source code. Is there any learning material on DRV8313 so that I can...
View ArticleDRV8301 dimensions mounting holes
Hallo,I have the DRV8301-HC-C2 on order an would like to prepare the mounting plate beforeit arrives. I have found the outer dimensions of the boards in the Hardware Development Package (sprc899...
View ArticleDRV10983/75 EVM
I've just received a DRV10983/75 EVM fitted with a DRV10975 and supplied with the Runtian motor. I've connected everything up, downloaded and run the software followed all the updates, and followed the...
View ArticleDRV10983 motor brake function
Like to find out how I might be able to add a brake to my 3 phase motor so that it doesnt move when someone trys to adjust it. Right now my motor is coupled with a ball screw and the load is traveling...
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DRV8833 shows unstable output
Hi,I'm using DRV8833 to create simple waveform. As you can see in following capture (upper one is output and bottom one is input), it is quite unstable. I want to see one straight line but it keeps...
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DRV8818 Noise on DIR terminal
Under the functional testing on our engineering board mounted on DRV8818, it occured step-out of the stepping motor. We cheked waveform on DIR terminal, and found large noise on it. Also we checked...
View ArticleDRV10983 startup time
Hi Guys,I'm using a DRV10983 to run a small BLDC motor.It is working well but ... the startup time (measured from writing the speed into 0x00 register to the moment when the ic starts to drive the...
View ArticleStepper Motor Driver With External MOSFET
HI i want to configure high torque Stepper Motor which is running on more than 85V, 4A or more. I am confused to interface it with my MCU. Please Suggest me Some interfacing.
View ArticleDRV3201-Q1 Qg of FET for driving
HiMy customer will use DRV3201-Q1. He has a question about Qg of FET for driving. Could you tell me about the following question?There is the following sentence in datasheet."Drives 6 Separate...
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DRV8711 noise problem at low speed.
Hi,I'm using DRV8711 and I step motor.I have one problem. Help me please.If I select that pulse speed (lower than 10kHz), motor have noise.not noise at high speed. schemetic step motor spec. By the...
View ArticleDRV8833 fast decay question
Hi !datasheet of DRV8833 describes the Fast Decay path ② on page10, the current goes from GND, through MOSFET's body diode, motor coil, another MOSFET's body diode, and finally goes back to VM(12V).I...
View ArticleDRV3204-Q1 setting
Dear all,I would like to know words of caution when DRV3204-Q1 is set standby mode.When I set DRV3204-Q1 to standby mode by EN=low, about 150uA was flowing at VB.But data sheet say that consumption...
View Articlecurrent sensing using three shunt resistors
HelloPlease, i want to ask about the current sensing using 3 shunt resistors placed under the three lower switches of a 3 phase inverter. How can i calculate the phase currents ? (for each phase there...
View ArticleDRV8432EVM - DC Stuff option for DC on Evaluation Board
Dear Sirs,I bought a DRV8432EVM to make a proyect with TEC modules. As I see in the reference of the board, you included two spaces for capacitors marked as "Stuff option for DC" and in the schematich...
View ArticleBootstrap Capacitors of DRV8432
Hello everyone,I have been trying to make a stepper motor driver board using DRV8432 for sometime now. I will be using it at frequencies of around 400-600Hz. The datasheet says:"For applications with...
View ArticleLower Side Shunt current Sensing
Hi,I am familar with shunt current sensing directly on motor phases.TI's DRV8303 application notes recommends schematics with shunt sensing on the lower-side of the half bridge.I misunderstand the...
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questions of DRV10975
1.We have some new questions of DRV10975. There have “SPEED_PWM DIGITAL MODE” parameter in page 7 of DRV10975 datasheet.The parameter of only have Min voltage but there is no Max voltage. From...
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