About DRV 8312 PWM signal amplitude problem
Hi, I'm using DRV 8312 69M kit with the BLDC_sensorless project from ControlSuite. Things were going fine until the PWM signal I measure from the oscilloscope is below the correct value, as shown in...
View ArticleInquiry regarding protection diode for DRV8811
Hello, allWe have one inquiry regarding the protection diode for DRV8811 from our customer, please refer to the item below and feedback us with your comment.When referring the schematic of...
View ArticleBLDC CONTROLLER
Hi,Our customer is looking for a controller for a BLDC motor that can provide control of the motor speed like the UC2625, but without a built in power stage. They would also like an SPI or CAN bus...
View ArticleEMI on the ground
Hi I have a Variable frequency Drive for 3 phase IM. I took speed feedback from an encoder coupled to the shaft. It works from 24V supply.When i took it to controller, due to noise i get more pulses....
View ArticleQEP problem F28335
Hi, I am having problem with the DSP i am using for my project. I am using F28335. And the encoder i am using it is open collector type. My output from the encoder is fine. It is giving pulses to the...
View ArticleQuestion about RD pin in DRV11873
Hi TIerI've tested DRV11873EVM and probed RD pin with removing J4. And then Voltage level on RD pin is about VCC-2V.With installing J4, Voltage level on RD pin is about 6.5V even though it is pulled up...
View ArticleDRV8825 EVM Board Layout Query
Hi,I am reviewing the gerber files of the DRV8825 EVM and have the following questions:1. The Kelvin and GND layers - are these connected? Why this arrangement rather than a GND / KELVIN layer and a...
View ArticleMotor driver for Brushless DC motor with 36V and 15-20A specification
We need to drive a DC motor with 15 - 20 A @36v . Please suggest revelent TI driver compatible with above specifications. We have tiva c series launch pad with us. Please suggest some low cost device...
View ArticleDoes TI has dedicated chip for DC brush motor control
Dear TI, I am a beginner in using TI's chips. I want to design a DC brush motor control board for some simple motor movement. I find there is one chip, LM628/LM629, is the dedicated chip for DC motor...
View ArticleDRV8301-EVM-HC Motor Startup Issue
Customer asks:We are using the DRV8301-HC-EVM with Hercules RM46CNCD for initial motor control development work. Recently, my software guy Mike, ran into an issue with failing to spinning the BLDC...
View Articledrv 102
I am using DRV 102 IC for power conservation purpose in coil. specification for coil 24 Vdc, current 1.88A,When I connect output terminal of IC to coil then IC is heated but when i removed coil from...
View ArticleV3P3OUT
The datasheets calls for a 0.47 uF bypass cap to gnd. on the V3P3OUT voltage reference output. There is the same part on the EVM board. The datasheet says this output can be used to create a Vref if...
View ArticleDRV 8432 PWM_A, PWM_B, PWM_C AND PWM_D INPUT SIGNAL PATTERN FOR THE 2PHASE...
HELLO,I AM TRYING TO CONNECT A 2 PHASE HYBRID BIPOLAR STEPPER MOTOR WITH DRV8432. FOR NOW I AM USING PSoc3 TO GENERATE THE PWM INPUT SIGNALS. COULD YOU PLEASE LET ME KNOW WHAT SHOULD BE THE INPUT...
View ArticleDRV8301 SPI output data
I have a question.About SPI output data, what is "F0" mean (output is "1" and "0")?Best regards,Atsushi Yamauchi
View ArticleDRV8332-HT thermal shutdown
Hello,I am looking DRV8332-HT datasheet and I don't understand thermal shutdown part :Overtemperature ProtectionThe DRV8332 has a two-level temperature-protectionsystem that asserts an active-low...
View ArticleRe: Connecting DRV8432 to a 3-phase BLDC motor
Kim,Do you guys have DRV8432 Evaluation Kit? I can find one for DRV8402 but not 32. Thanks,Ivan.
View ArticleAbout DRV 8312 PWM switching
Hi,I was using TMDSHVMTRPFCKIT for BLDC_sensorless project. The original settings of f2803xbldcpwm.h file is High side PWM switching and Low side ON (H_PWM_L_ON mode). However, my research involves PWM...
View ArticleDRV11873EVM - Motor stops over 9500rpm
Hi Team,Our customer is evaluating the device using the DRV11873EVM.They want to use the device to control the motor at 10000rpm, but the motor always stops at around 9500rpm.What is the problem ? Is...
View ArticleDeciding on a chip for my 3 phase sensor less bldc motor control??? Need Help!
Hello,I am new to this forum and new to motor controllers or drives. For my senior design project my team and I are competing in the shell eco marathon, our problem is a change in regulations for this...
View ArticleDRV8412 case temperature above 60°C
Hello :)I am using a DRV8412 for driving a two phase stepper motor in Sin/Cos mode. The DRV is in mode 0 (Dual full bridges (two PWM inputs each full bridge) or four half bridges with cycle-by-cycle...
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