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DRV8834: Stepper Motor Missing Steps
Part Number: DRV8834Hello All,Greetings !!!I am currently working on one project in which we are using DRV8834 motor driver IC and Portescap stepper motor(having 15 degree angle, 400 PPS and 3.6 Volt)....
View ArticleRE: DRV8601: PWM Frequency and Rms 1.8V haptic driving
Hi Onur, First of all I'd like to recommend you to look into our newer actuator drivers from DRV26xx family (DRV2625/DRV2624). These devices have the ability to sense the back-EMF from the actuator to...
View ArticleDRV8601: PWM Frequency and Rms 1.8V haptic driving
Part Number: DRV8601Hi everyone,I am developing haptic driver and using LRA .I couldn't see any information about the frequency of pwm in datasheet. Resonance frequency of the LRA i used is 235Hz. I...
View ArticleRE: DRV8848: The DRV8848 Vcc rail dips when I have sleep pins floating
Because I'm running the chips in parallel mode, I know I need to configure the chip for this operation. Section 7.3.3 how to configure the chip for parallel operation. However, as I have four of the...
View ArticleRE: DRV8848: The DRV8848 Vcc rail dips when I have sleep pins floating
The DRV8848 internally has a pull down resistor for the SLEEP pins. When nSLEEP pin is low, VINT is low.
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DRV8848: The DRV8848 Vcc rail dips when I have sleep pins floating
Part Number: DRV8848Hello thereI'm currently using 4 DRV8848 chips to each drive four motors for a personal project of mine. I received my PCB board, soldered the components for the motor section, and...
View ArticleRE: DRV10983: constant abnormal Kt and strange stall performance
Alex, Did you measure the Kt by simply spinning the motor and looking at the voltage between 2 phases? If the programmed value is close to the actual Kt and the lead time is programmed correctly you...
View ArticleRE: DRV10987: the output voltage of the motor driver
Liraz, To increase the voltage to the motor you need to increase the command in register 0x30. It looks like you're already near the maximum so I don't know that you can keep 7V rms delivered to the...
View ArticleDRV10987: the output voltage of the motor driver
Part Number: DRV10987hi,i am using the drv10987 for driving my motor.and i have 2 questions:1)the driver gets 24v input and the voltage to my motor is also 24v.i see that when the driver goes in to the...
View ArticleRE: DRV10987: drv10987
Liraz, RPM = (electrical rate/ pole pairs) * 60. For a 10 pole motor at an electrical rate of 100Hz: RPM = (100 / (10/2)) * 60 = 1,200 Thanks, Brian
View ArticleDRV10987: drv10987
Part Number: DRV10987can the drv10987 turn my motor (24v, 10 poles(5 pair)) in 9000 rpm?cause i see the maximum speed is 512so the maximum velocity is 51hzso the maximum rpm for motor with 5 pairs is...
View ArticleRE: DRV10983: constant abnormal Kt and strange stall performance
Hi Brian, I think my lead time is probably not programmed correctly. I tried measuring the current on the V phase lead to the motor, but it doesn't look like the plots shown in the tuning guide (I...
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DRV10983: constant abnormal Kt and strange stall performance
Part Number: DRV10983I am using the DRV10983 (currently on the DRV10983EVM eval board) to control a GBM4108H-120T motor. I used the GUI at first, but now I am using a microprocessor to set...
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BOOSTXL-DRV8301: BoostXL-DRV8301 Motor's Current Sense Circuitry
Part Number: BOOSTXL-DRV8301Hello,the opamp outputs for the current sense in the BoostXL-DRV8301 (IA_FB, IB_FB, IC_FB) are all connected to 56 Ohm resistors in series, followed by 2200 pF caps in...
View ArticleRE: DRV8301: DRV8301-HC-EVM Rev D kit_drv8301_buckconverter
The following is part of DRV8301 pin datasheet. PH 50,51, O, The source of the internal high side MOSFET of buck converter. Q1. where is the internal high side MOSFET? Q2. I think PH pin is output pin....
View ArticleDRV8301: DRV8301-HC-EVM Rev D kit_drv8301_SN3,SP3
Part Number: DRV8301I have a DRV8301-HC-EVM Rev D kit.drv8301 has SN1, SP1, SN2, SP2.Q1. But why is three shunt register?Q2. Is there a reason that SN3, SP3 of drv8301 don't need
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RE: DRV8601: PWM Frequency and Rms 1.8V haptic driving
Hi Ivan,Thanks for your suggestion. I did my own demo board . I tried both (DRV2605 and DRV8601).DRV2605 raises the cost. It's successful.The only problem is that it will increase the cost. I also...
View ArticleRE: DRV8881: DRV8881PRHRT odd behavior
Dear Team,Thank you for your support.Customer was able to solve this.The problem was that the traces from the xISEN pins to the current sense resistors where made too thin so there was a substantial...
View ArticleDRV8881: DRV8881PRHRT odd behavior
Part Number: DRV8881Dear Team,Could you please help with the following customer question ?I've encountered a strange behavior of the servo driver (DRV8881PRHRT):For some reason its 2nd channel refuses...
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