DRV8885 Wake up time
Hello,Our customer uses the DRV8885, has a question.How long does it take from nSLEEP inactive high toSTEP input accept?Regards,Naoki Aoyama
View ArticleDRV8885 Current Control
Hello,Our customer uses the DRV8885, has some questions about Current Control.1) about VRREF specificationIt is mentioned RREF=18k ohm to 132k ohm in the TEST CONDITIONS.Is that range the limit of...
View ArticleCurrent sensing in PMSM FOC
Hi,I am using TMDSHVMTRPFC KIT .How many shunt resisitors are used in PMSM FOC example code to measure the current. We need to measure only phase a and phase b currents right?Is there a provision to...
View ArticleDRV8412 C2 KIT - Running the stepper motor in standalone mode
Hi All,I've had no problem to run the GUI however when I try to run the standalone version of the example code provided the motor wouldn't turn.I've set the EnableFlag to true and I can hear the motor...
View ArticleDRV10963 FG signal
Hi,My customer is using DRV10963. He has questions about FG signal. Could you answer me below questions, please?Q1:What is FG signal generated from? -> I think that FG signal is generated from...
View ArticleDRV 8432 heat sink ground connection needed?
Does the heat sink for the DRV8432 motor driver IC need to be grounded? One of our engineers has a DRV8432 test circuit built up on a perfboard and the heat sink is grounded with an alligator clip...
View ArticleDRV8312 development kit
hi every one here i bought a c2000 micro controller development kit for speed control of bldc motor. this id new project assigned to me. I want to know the details how to evaluate the development kit....
View ArticleDRV8832
Would you tell me about these questions?1) How long time does it take to become "FAULTn = Low" after OCP is worked?We suppose a process below;1. Output current of over 1.3A continue about 275ms. | 2....
View ArticleBack emf of PMSM EMJ04PB22
Hi, Can any one suggest a method to view the back emf of the PMSM motor (EMJ 04PB22) in scope. Is it purely sinusoidal?
View ArticleGUI for DRV201A Evaluation Module
I purchased a DRV201A Evaluation Module for 100mA Voice Coil Motor Driver with Advanced Ringing Compensation (DRV201AEVM). The kit includes a driver board and a USB interface adaptor. I downloaded the...
View ArticleCircuit Diagram of DRV8312-69M-KIT develpment board
Hi, I am nimash, 3rd year undergraduate of University of Moratuwa,I want to build a Brush less DC motor controller which can tolerate 300v and 150A output.I indent to use "IRFP4668PbF" Â n-MOSFET s and...
View ArticleDRV8834
Hi,our customer use DRV8834 in stepper motor application. Some devices cause buzzer noise on the motor.The problem could be fixed by dedicated device. Failure could be reproduced. VM...
View ArticleDRV8307 gate drive and speed control
Is the 30mA gate current internally limited? The user manual for the EVM marks the gate resistor as optional, so presumably they're not needed solely to limit drive current, just for slowing switching...
View ArticleDRV8313 supply current glitch
I'm having an odd problem with the DRV8313. The design has two separate motor channels. The breadboard uses two DRV8313EVM boards modified to interface with an external microcontroller. It works fine....
View ArticleDRV8805 Indexer
Hello,Our customer uses the DRV8805 for drive an uni-polar stepper motor.The customer applies the table2 (2 phase excitation) for the typicalapplication schematic Figure 7 .In the second step, OUT1=ON,...
View ArticleDRV8842 nRESET and nSLEEP difference
Hello,is there a difference in putting the device to sleep with nSLEEP Low or nRESET High ? Why should I prefer to do it with nRESET?Thank you very much!!!
View ArticleDRV8432 operating at 5V PWM?
Hello,I would like to control DRV8432 with 5V microcontroller. Its datasheet says, that its maximal PWM to GND voltage should be Vreg + 0,5 (4,2 + 0,5 V). Is it possible to use 5V PWM? If not, can I...
View ArticleDRV8303 output impedance
Hello,Our customer uses the DRV8303.It is mentioned the output impedance of the GL_x when EN_GATE low is from 1.6kohm to2.4kohm on the datasheet. When EN_GATE low, the customer input high voltage as...
View ArticleDrv8301 speed controller module
Hello,I have a board driver 8301 and a controlCARD. On the driver, there are a module "Speed controller" where we can change the speed manually and the buttons "start", "stop". It seems that the...
View ArticleDRV10983 dynamic register update
Hello allAnyone know what DRV10983 registers can be dynamically updated while the motor is running?We have a direct drive pump whose motor is fairly difficult to drive, we are getting fairly good...
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