DRV8823: DRV8823 software example
Part Number: DRV8823Dear TI: My customer used DRV8823, can you help to provide the software example of DRV8823? If there is no DRV8823 code, other similar stepper motor driver code is also ok, the...
View ArticleDRV8872: OCP function verify
Part Number: DRV8872Hi All:My customer is Verifying the OCP trip function of DRV8872. (this is using in the Automotive small motor drive)Can we use a DC electronic load to test it? ( [DC load + to OUT...
View ArticleDRV10974: Startup issue
Part Number: DRV10974Hi sirour customer use DRV10974 to design as air purifier，now meet above question need you help to check it and give some suggetions how to dubug it,tks!quetions: when use the...
View ArticleDRV8846: Operational at VREF between 0 to 1 V, but accuracy is degraded
Part Number: DRV8846Hi allWould you mind if we ask DRV8846?There is the description "Operational at VREF between 0 to 1 V, but accuracy is degraded." on the datasheet P4.According to VREF between 0 to...
View ArticleDRV8332: Data sheet question: Why recommend OC latching mode only at 13.2A
Part Number: DRV8332Hello,I am seeing peak current pulses of about 10-11A per phase when my BLDC motor is under load. I have the following configuration: M3=1, M2=0, M1=0. The peak current stays at...
View ArticleRE: Driver Recommendation for Electrotactile Haptic Feedback?
Hi, Jeremy, Welcome to E2E and thank you for your interest in our products! Our haptics devices selection depend of the kind of device that will be connected. We don't have a haptic device for the...
View ArticleDriver Recommendation for Electrotactile Haptic Feedback?
Hi,I am a developer who's trying to develop an electrotactile haptic feedback system (haptic feedback system using different waveforms of electrical signal).In regards, I am looking for any...
View ArticleRE: DRV8662: questions about the input and output characteristics
Jamie, The DRV8662 is not capable to support the changing PWM duty cycle. The low-pass filter is always required in order to change from duty cycle modification to analog input. Otherwise, the output...
View ArticleRE: DRV8332: Bootstrap Diode and UV Thermal Failures
Hey Victor, 1) The 50mA current at room temperature is 12V Vdd current with no motor load. At 10mA motor load, the Vdd current will be much higher. 2) Unfortunately, other than the bulk capacitance on...
View ArticleDRV8332: Bootstrap Diode and UV Thermal Failures
Part Number: DRV8332Hello,We are using the DRV8332 to drive a 28V BLDC motor for an EMA application and are looking for guidance regarding two failures we have experienced:1) We have followed the...
View ArticleRE: DRV10974: Startup issue
Hey Darren, I would suggest the below: 1) The simplest solutions is put a faraday cage around the DRV10974 IC that will protect the DRV10974 IC from the negative ions. 2) To actually see why the motor...
View ArticleRE: Question about adding precision position control to FOC-style algorithms
When you have a high precision position encoder, I don't think there would be any "random" movement at start up because the voltage is applied on the basis of the current position of the rotor. Since...
View ArticleRE: Question about adding precision position control to FOC-style algorithms
I don't think you thoroughly understood the issue. The type of high-resolution encoder normally used for position loops is only an incremental encoder for cost reasons, you generally can't commutate on...
View ArticleRE: Question about adding precision position control to FOC-style algorithms
There are high frequency injection methods used to identify the shaft position at zero speed and to run it at low speeds and transition to the regular one at higher speeds. But I am not sure if these...
View ArticleRE: Question about adding precision position control to FOC-style algorithms
The kind of position precision necessary for a usable 3D printer in the X and Y axis is on the order of 1.5 to 15 microns. Now that of course is specified on a linear scale but this is over at least...
View ArticleQuestion about adding precision position control to FOC-style algorithms
I didn't see anything like this posted around, but I 'm kind of surprised it wasn't. There's quite a lot of commercial activity nowadays on the topic of using motors for axis control in applications...
View ArticleDRV3245Q-Q1: Can DRV3245-Q1 be used to BLAC?
Part Number: DRV3245Q-Q1Dear team,As you know, TI has DRV3245-Q1 as BLDC device. Can we use this device into BLAC application?As far as I know BLDC is controlled by trapezoidal signal and...
View ArticleRE: DRV8872: OCP function verify
Hi Rick My Customer setting IN1=1 ,IN2=0.Test the DRV8872 with an electronic load at 0.5A intervals. But when test to 3.1A . The nFAULT is driven low. So I think customer's test method may have problem...
View ArticleDRV8840: How much of capacitance error is allowed for the flying capacitors...
Part Number: DRV8840Hi Exparts,My customer is asking TI about tolerance specification of capacitor for CP1, CP2 and VCP of DRV8840. Could you support this question?They understood that 0.01uF ceramic...
View ArticleRE: DRV10987: Failing at first step of setting up DRV10987 - no buck and 3.3V...
Hi Sanmesh,Thanks for the advice. I measured the current and found it was very high, so a bit further investigation and it seems I had some weak contact between the ground pad on the bottom and some of...
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