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DRV8839 - Increased current consumption with same average drive voltage
Hi,We have a design which uses 2 x DRV8839 to drive a couple of small motors. The product is battery powered (4 x AA), so to maintain a (fairly) constant motor speed the DRV8839 IN line is PWM'd to...
View Articleworking of 3 phase inverter in regeneration
Hello, I am looking for an evaluation board that can be used for regeneration in ebike. I am using a bldc hub motor.Thanks
View ArticleDRV8842 voltage spikes during switching
Hello,We are using the DRV8842 bridge driver for switching a large inductor in a magnetics clamping application (inductor around a permanent magnet). With 2 control signals we can set the inductor...
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DRV8312 drive output shutdown
I have a DRV8312 on my board which drives a 48V motor with 2.5mH inductance. I have developed the board and firmware using a test motor and everything was fine. When I tried the board with different...
View ArticleTo control DRV8701EVM through UART of MSP430 on the board by external MCU
Hi,In our evaluation with DRV8701EVM, the board is controlled by GUI on PC through USB interface. I'd like to send same commands in GUI through UART of MSP430 on the board from external MCU.Could you...
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DRV8332 Phase B is something wrong
Hi everyone.I use the DRV8332 for 24V/6A MotorDRV8332 is Okay. but increasing the gain. (motor is vibrating but it is Okay. it is normal. because motor load is very heavy. now motor have noload)Phase B...
View ArticleDRV8701 new design
I'm designing with DRV8701. From the DRV8701EVM5.9 to 45V operating voltage range15A continuous / 20A peak H-bridge output currentDrives a single bidirectional brushed DC motorCan we increase the...
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DRV8332 , Phase B wave becomes collapsed
Hi everyone.I use the DRV8332 for 24V/6A MotorDRV8332 is Okay. but increasing the gain. (motor is vibrating but it is Okay. it is normal. because motor load is very heavy. now motor have noload)Phase B...
View ArticleTMS320C2000 Development Tools
Hi,we have checked some BLDC-Motors with this development tool. All motors was switched in delta connection. Function of this tool is very good. Now we would take some motors in y-connection - no...
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Soleniod driver DRV102 input signal Spec
Dear, Now we use the DRV102 to driving a soleniod valve so as to down the voltage during hold phase.we have a question is that there is a undesired 1kHz PWM signal but not a On/Off signal need to...
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DRV8885 Solution for easy RREF setting
Hi,My customer is using DRV8885. They want solution for easy RREF setting. Could you advice me about idea of circuit, please?By 3 state logic from "MCU GPIO pin" to "RREF pin", they want to operate...
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DRV8711 register optimization for stepper motor
Hello Team,We are using a stepper motor from Nanotec called ST6018M2008-B together with the DRV8711 booster pack. We have followed the optimization guide to get a sine wave output on the motor current....
View ArticleDRV8825 nENBL response
Hello,Our customer estimate the DRV8825.The customer observe a strange behavior about logic timing.I attach the file of results.(Please visit the site to view this file)When the customer input nENBL...
View ArticleDRV10983 internal buck converter switching frequency
Hi team,a simple and quick question for DRV10983 : what is the switching frequency of the internal step down converter?Is that block implemented as a PWM current mode converter, or what else...
View ArticleMotor Controller for wheelchair
Dear TI Engineers,First of all, I really appreciate what you do for E2E community.I'm an electrical engineer, I want to develop a Wheelchair motor controller (For personal use). The controller should...
View ArticleDRV10866 speed control with VCC or PWM?
The datasheet says that the speed can be controlled by VCC and PWM input. So when should I use VCC and when to use PWM? Besides, do they have the same resolution? The datasheet only says: "The PWM...
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Can I use DRV8432 as three-phase motor controller?
Hi,Are there any special reasons for below? (about red square box)Can I use DRV8432 as three-phase motor controller?Or is there a reason that can not use it?
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DRV 8842 nFault Pin
Hi,I designed a circuit with a DRV8842 and I am measuring always ~1.8V at the microcontroller in the MOTOR1FAULT Pin, no matter if the driver is in fault or not.Can you please tell me what I did...
View ArticleDRV8840 - ENBL command
Good morningWhich is the suggested frequency applicable to the ENBL pin if it is used for PWM speed control of the motor?Is there also a limit (both min and/or max) for the frequency usable?Kind regards
View ArticleUsing DRV8305, nFault pin pulls low without fault present on SPI
Hi there,As mentioned in title, nFault pin of DRV83053 pulls low in random occasions, without any report of fault on SPI. The chip can still drive a load properly. When nFault is released, it functions...
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