signal conditioning for TMS320F28335 eZdsp with hall effect current...
i want to sense 3 phase currents of motor using hall effect sensors and the transformation is 200A gives 4volt but i use eZdsp that use 3.3V and the full load motor current is 2.5 A and ofcourse it...
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DRV8825 + NXP PCA9629
Hello!Can PCA9629 is able to drive the DRB8825? I can see that PCA9629 can drive the H-BRIDGE directly but DRV has it's own logic to generate the pulses for the internal bridge.My idea is to use one...
View ArticleDRV591
ON THE ABOVE PARTWITH PIN#6 AT A REF. VOLTAGE FROM THE OUTPUT OF A OP-AMP OF +2.50 VDC AND A SINEWAVE RIDING ON THE REF LEVELOF 1.25 VAC PK-PK.ON PIN#7 IS THE OUTPUT OF A OP-AMP THAT WILL BE THE ERROR...
View ArticleUsing the DRV8711EVM Source Code
Hi,I have the DRV8711EVM board and I am attempting to program it to do a specific task. Are there any resources on how to load and modify the provided MSP430_source_code in slvc594? Thanks,Travis
View ArticleDRV10983 MotorSpeed/MotorPeriod register values
Hi,I am fighting with the values I read back from the DRV10983 registers for MotorSpeed (0x11/0x12) andMotorPeriod (0x13/0x14). I have a motor with a high rotating mass connected, so there should be...
View ArticleBeagleBone Black used to drive DRV8312or any of the DRV83xx drivers
I have been looking into using the BBB for several different applications. I see that it is very capable driving steppers and DC motors and IO in general. I am now trying to understand if we could use...
View ArticleDRV8308 Control
Hi I'm kind of confused about the features of SPI with DRV8308. Besides being able to write to the registers permanently, is it possible to control the speed of motor over SPI only? or do I also need...
View ArticleAbout max frequency of PWM control (1MHz)
Is there DRV88xx which can control PWM by 1MHz? (Vm：24V,Irms：1.5A) Best regards, Satoshi
View ArticleDRV8301/2 GVDD external drive.
Hi, I might exceed the 30mA RMS current for GVDD on my project. I think I saw somewhere that you can drive GVDD externally with say 12V to disable the internal regulator and provide the current...
View ArticleDRV8804 SDATOUT frequencies
I have a question about DRV8804 SDATOUT.Data sheet P7 recomend 1kΩ external pullup in case of using over 1Mhz clock frequencies.-How much frequencies does SDATOUT in case of 1kΩ external pullup at 5V?...
View Articlewhat parameters effect DRV10983 maximum commutation frequency
HI,Can any one tell which parameters effect the commutation frequency?the motor which comes with DRV10983 EVM speed around 360Hz,and in datasheet max it is up to 1kHz ,so how can i increase the...
View ArticleDRV8432 Fault issue
Hi,We are using a DRV8432 to drive 2 DC motors. It works succesfully but with this limitation: after powering the board (being it unpowered for several minutes) the driver detects a fault condition...
View ArticleDRV8412 FAILURE
I people.I have a application with DRV8412 operating in four half bridge. These Half-bridges are driven by four independent PWM channels.However exists a abnormal condition in DRV8412, the driver,...
View ArticleLoading the Motor (HV Motor Control +PFC Kit)
Hi,I have bought about 20 numbers of the High Voltage Motor Control and PFC Developer's Kit (http://www.ti.com/tool/TMDSHVMTRPFCKIT) and the three motors (ACI, PM and BLDC) which are recommended by TI...
View ArticleCommand update rate for LM629 using 4Mhz crystal?
Hello,I want to inquire command update rate for LM629, using 4Mhz crystal?Section 5.6.2 of document "AN-706 LM628/629, SNOA184D–October 1993–Revised May 2013"; states for 8Mhz/6Mhz crystal...
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Two DRV8842 burnt. Running out of ideas.
Hi. I'm trying to control a 24V DC motor using DRV8842.First I tried a quick prototyping hack, and managed to drive the motor for a while, but then the DRV8842 suddenly burned.So I tried to make a...
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Confused about current limiting of DRV8842. And pinch protection.
HiI'm trying to control a vent actuator using DRV8842.The actuator uses a 24VDC motor to control a rigid chain.Currently, I'm using a handsolderered prototype. At first I burned two drivers, most...
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DRV8832 fault pin problem
Hi,we are using drv8825 drivers for controlling NEMA 17 stepper motor. However, we have an important problem with the fault interruption which the driver internally has, because it turns down when we...
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