RE: BOOSTXL-DRV8323RH: Interfacing PWM Input from Arduino/Raspberry Pi
Hi Rasa, Not a problem. Differences would be in connecting over the four SPI wires in the BOOSTXL-DRV8323RS to the Raspberry Pi instead of the single MODE pin. The other connections I outlined above...
View ArticleBOOSTXL-DRV8323RH: Interfacing PWM Input from Arduino/Raspberry Pi
Part Number: BOOSTXL-DRV8323RHWe currently have the motor drive connected to launch pad board, running software from the launch pad GUI. We are trying to control motor motion with our own PWM source...
View ArticleRE: DRV8840: DRV8840 Reset timing
Hi Gavin, Please use 50us as the minimum nRESET low time.
View ArticleRE: DRV8711: Number of PWM channels required
Hi Puneeth, It looks like the 74AC11257 can work, you might want to double your configuration. Please section 7.3.2 of the DRV8842 for Bridge control logic. Thanks.
View ArticleDRV8711: Number of PWM channels required
Part Number: DRV8711Hi, I want to control two brushed DC motors with DRV 8711 using the PWM mode. My doubt is regarding how many PWM channels does each motor require? Pin A IN1 and pin A IN2 require...
View ArticleRE: DRV777: Need help selecting a driver chip for unipolar 5V stepper
Rick, thanks for your reply. If I parallel 3 outputs to each coil of the stepper, the current through each channel may get too low. On page 4 of the DRV777 data sheet, there seems to be a low limit of...
View ArticleRE: BOOSTXL-DRV8323RH: interface with DSP28377S with 6xPWM mode
Hi Min-su, Have you tried to run the BOOSTXL-DRV8323RH with a MSP-EXP430F5529LP? Using this LaunchPad will allow you to compare the differences between the inputs. If you don't have access to the...
View ArticleBOOSTXL-DRV8323RH: interface with DSP28377S with 6xPWM mode
Part Number: BOOSTXL-DRV8323RHHi,I'm trying to interface with BOOSTXL-DRV8323RH and DSP28377S.I used 6xPWM mode.below is conneting list. PWMxA, PWMxB is signal from...
View ArticleDrv110: Solenoid Design
Part Number: Drv110What are the specifications to be kept in mind while designing a solenoid which is to be used with DRV110 to achieve target current consumption?
View ArticleRE: DRV777: Need help selecting a driver chip for unipolar 5V stepper
Hi Paul, There is no low limit to the current. The IOUT specification is an indication of RDSon of the FET. Typically the RDSon is .4V/.140A, or 2.8 Ohms. It could be as high as .4V/.095A, or 4.2 Ohms....
View ArticleRE: DRV3201-Q1: CS amplifier Gain Drift and Shift Buffer Offset Drift
Hello will-san, Please respond for my request 2-2. Customer needs Shift Buffer Offset temperature drift information for then meeting with end customer. Best Regards.
View ArticleDRV3201-Q1: CS amplifier Gain Drift and Shift Buffer Offset Drift
Part Number: DRV3201-Q1Hello, Please correspond following question and request from customer. 2nd Stage Gain Drift vs. temperature.Could you supply the graph that shows the relationship between...
View ArticleRE: DRV8821: Mystery Overcurrent Tripping
Hi Dan,The schematic appears to be OK. Based on your description, OCP is the most likely event. We will investigate and reply soon.While waiting, can you:capture the sense voltages 10us before the...
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DRV8821: Mystery Overcurrent Tripping
Part Number: DRV8821We use multiple DRV8821 components in one of our systems and we are evaluating a new motor for use on one of the circuits. The circuit is configured for a maximum of 0.27A by using...
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DRV10975: DRV10975 EMC ISSUES
Part Number: DRV10975Dear TI:I use drv10975 as BLDC Drive. The Moter output power is 4W, voltage:12v.but when i do GB4343.1 Certification test, Conducted Disturbance and Disturbance Power are all...
View ArticleRE: DRV8305: SHx output voltage at power on
Hi Riveros-san,How is the progress?Why did the 24V appear at SHx?Best regards,
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DRV8305: SHx output voltage at power on
Part Number: DRV8305Dear all,I tested DRV8305 and had question.*I attached test fileCH1:yellow = PVDD voltage(=24V input)CH2:green = SHA voltageWhen power on, I thought that SHA output 12V=24V/2....
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RE: DRV8305: Non-Linear PWM-RPM Relation when using High Frequency PWM
Hi Phil,The linearity of the curve improves with the increasing gate driving current like you said . However, after 500mA, there is not much change. Also, sudden jumps near 17000 RPM region still...
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DRV8305: Non-Linear PWM-RPM Relation when using High Frequency PWM
Part Number: DRV8305Hello Everyone,We are using DRV8305 for driving a BLDC motor in 1-PWM mode with a 200kHz PWM signal. We have observed sudden changes in motor speed in specific ranges of PWM duty...
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