DRV8842 1M ohms resistor on VCP terminal
Hi,I have a question about resistor on VCP terminal of DRV8842.On the latest datasheet, 1M ohms resistor on VCP terminal has been added. However, our production has been started without the resistor....
View ArticleDRV8832 input and motor voltage condition
The customer want to control the motor with below condition.1. Input voltage: 6 - 6.8V2. Motor voltage: 6 - 6.8V3. Decreasing the input voltage, DRV8832 operate with 100% duty.I think DRV8832 is not...
View Articlebq32000 charging a battery
Hiin the datasheet of this component it is written that it can charge a backup battery under certain conditions.what are those conditions? where can I find them?I want to recharge (for backup) a...
View ArticleClik here to view.
Unexpected DRV8332 shutdown
Hi,We’re using DRV8332 drivers to drive several BLDC in our system. On one of the axes we experience strange driver behavior when trying to accelerate past a certain speed.The first figure below shows...
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 ArticlePMSM Motor Control
Dear Friends,I'm working on PMSM Motor Control Project (with Encoder + FOC). For that I've imported the HVPM Sensored code from control-suit. I've modified the code as per my requirement and achieved...
View ArticleStepper motor driver DRV8834 for thermal line printer
I am using DRV8834PWP texas instruments Stepper motor driver for simultaneous print head movement while printing. I am not at all understanding how to feed characters to printer LTP01-245-11/12/18 and...
View ArticleRemove and Restore Power via Interlock on DRV8825
I have an application where I need to remove motor drive capability through a safety interlock. Using a digital input, such as Enable, is not acceptable. When the interlock relay is actuated, the...
View ArticleDRV8839 Questions
I am working with the DRV8839 and have a few questions about implementationWould like to drive a brushed DC motor "single-ended" for rotation in one direction only (i.e. OUTx tied to one end of motor...
View ArticleIn FOC, How does the Iq/Id is converted to Vq/Vd?
Hi everyone, In the doc "SPRABQ2–July 2013", it demonstrates a scheme of FOC(on page 8. sorry, I failed to attach this figure).My question is why can convert Iq/Id to Vq/Vd just by PI regulator....
View ArticleAbout BLDC/BLAC NEMA17 55W Motor come along-with DRV8312-69M-KIT
Dear friends,I'm going to purchase The DRV8312-69M-KIT, An InstaSPIN-FOC and InstaSPIN-MOTION technology-based motor control evaluation kit, for spinning three-phase BLDC and PMSM motors.The kit...
View ArticleDRV8834 Queries
Doubt 1:For my project, I want to have three operating modes for a stepper motor, dependent on the motor coil current, i.e. I want to regulate the motor current dynamically using a key press from a...
View ArticleTwo DRV8835 drivers
Hi All,I want to use two DRV8835 driver to control 4 different devices (like DC motors).Also I want to limit the number of pins of microcontroller. Can you propose any solution how can I connect the...
View ArticleClik here to view.
Problem with DRV8301 - custom design
Hi all, I’m we are working on BLDC motor controller based on the DRV8301. After switching on supply voltage BUCK converter works as expected - it provides stable voltage. After setting EN_GATE to high...
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 ArticleDRV8301 fault
There is a question about the design using DRV8301. The target board contains Hercules MCU and DRV8301. The SPI communication between Hercules and DRV8301 is well,and when PWM signal generated on...
View ArticleDRV8835 – About PWM input
Hi, Can we input PWM for xPHASE and xENBL pin in PH/EN mode? We know that PWM input is usable in IN/IN mode.But, we would like to use the PWM input in PH/EN mode.Could you please give us some advice....
View ArticleDRV8842 1 Mohm resistor on VCP
Hi,On the datasheet, 1Mohm resistor has been added to discharge the VCP cap. Can I use 1kohm resistor to accerarete discharging VCP cap? Is there any information about minimum resistor value?Thanks...
View ArticleDRV11873 FS pin pull up or high?
Hi,Datasheet describes:--------------Through FS pin selection,DRV11873 can be used for wide applications from low speed refrigerator cooling fans to highspeed server cooling fans.FS status can only be...
View ArticleDRV8837 power sequence
Hi,Does the DRV8837 requires a specific power-up sequence? Does the DRV has a recommended power-up sequence?I'm using VCC=3.3V while VM = 5VThanks,Noam
View Article