drv8301 buck converter output
I have a drv8301 and the buck converter components soldered to my board. I added a 3.9 Ohm resistive load at the 3.3V output. At 12 V I see 900mA current at the output and 3.214V. At both 24V and...
View ArticleDRV8711 randomly dies
Hey guys,we have designed a step motor controller based on the TI DRV8711 and are testing our prototypes.The last two days we are trying to tune the control parameters per SPI and we have more than...
View Articlesurvey motor driver request application in IP Cam zoom in/out
Hi all,My customers survey motor driver request application in IP Cam zoom in/outDriver Request: Step motor driver spec Logic Supply Voltage: DC 3.3VMotor Supply Voltage: DC12V and...
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DRV8881E / supply 5V for control input without VM
Hi Team,I believe it is no ploblem to supply 5V for APH, BPH, ATE, nSLEEP, TOFF, nFAULT even if VM isn't supply yet.Is my understanding correct?I would like to confirm just in case.Best Regards,Yaita /...
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DRV8802 Control output current by VREF
HiWe want to regulate winding current with DRV8802-Q1.We refered SLVA416 application report and tried to do it with DRV8802EVM.As an evaluation, the VREF input for DRV8802EVM is a sine wave from...
View ArticleDRV11873 Motor stops at 50% of the maximum frequency
When I slowly increase the speed of my 8-pole motor, the driver stops and restarts at exact 484 Hz. When I increase the speed faster, and the motor skips the critical speed, the driver is able to go up...
View ArticleTPL7407L - optional zener diode on the datasheet P11
Hi allWould you mind if we ask TPL7407L?What is optional zener diode on the datasheet P11 used for?We are sorry that we can not understand the word "Flyback event".It means that the motor genenates the...
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DRV8824-Q1 9.2.2.2 Current Regulation
Dear sir,About DRV8824-Q1, Chapter 9.2.2.2 Current Regulation.Below is our design sample:For Equation(4):VREF=3.3VRsense=0.4 ohm=> Ifs = 3.3/(5*0.4) = 1.65 (A)for Equation(5):VM=12VRL=10...
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HIgh current BIPOLAR Stepper Motor
Hello Sir/Maam,please suggest a suitable driver for below mentioned bipolar stepper motorModel No: BH42 SH 47 - 1704 AF BIPOLAR 4.4 kg cm (0.44 Nm).Current/Phase:1.7AVoltage :12-24 VApplication:Require...
View Article3d Printer design, Using FOC, or instaspin
First off I guess let me introduce myself. My name is Stacy and I'm building 3d printers which has brought me to this sight. I am successfully using stepper motors right now and following a few...
View ArticleDRV8711 register read values, Are these correct, what is their meaning?
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View ArticleDesign and Build a motor driver
Hi;I am attempting to build and design a Motor driver for use with the TI C2000 TMS302F28027F Launchpad.Essential it is a more powerful motor driver than the DRV8301 booster pack and should operate in...
View ArticleDRV8332 Fault status in CBC mode
Dear Sir,If we use CBC mode when OC occurs does it report to Fault pin?
View ArticleDRV595 as TEC Driver
Dear Sir or Madam,I am looking for a TEC controller IC in order to drive a TEC module with high temperature stability (at least 0.01K, but a better precision would be nice). I found plenty of IC but...
View ArticleDuty cycle control of a 3-ph BLDC motor
Hello,I'm working on driving a BLDC motor, in a sensorless mode, with the duty cycle of PWM that I will generate from an external device, with its own algorithm of control. I have seen that the...
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drv8308evm clock frequency mode
hi,we are using drv8308evm board with external SPI interface (from STM32F429 controller). SPI communication is working. All control signals like ENB,CLKIN,RST everything is controlled by STM32F429. we...
View ArticleDRV8835 - PWM controlling the DC motor
Hello Team,Please allow me to ask you a simple question. When driving the DC motor with PWM using in IN/IN mode, I believe you should control the motor repeating FORWARD and COAST, am I correct ? Or,...
View ArticleDRV8412 always in brake
Hi, hopefully this is a simple question.We are evaluating the DRV8412 using the evaluation board (DRV8412EVM) for a haptic/robotic application. Currently setting up a torque controller to test the...
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DRV8870 - ramp rate 2V/us
Hello,In the DRV8870 datasheet page 3, there is the rating of Power Supply voltage ramp rate(VM) as 2V/us.Could you please let me know this meaning?Is this rating applied to above 6.5V of VM which is...
View ArticlePower Supply for DRV8305/DRV8305-Q1 and deadtime setting
Hi TI community,I am wondering if it's possible to use the DRV8305 and DRV8305-Q1 in a 48V application by supplying the three-phase inverter with 48V and using something like a simple shunt voltage...
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