Where to buy this?
Hi AllI found this video,is the motor set can buy from TI?https://www.youtube.com/watch?v=ncM7N-hLKQMRegards,Hank
View ArticleRE: False Readings of LM628
Ahmed,We are not exactly sure what is causing your issue. We would like a schematic to better understand your system. It is important to note that the inputs to the LM628 should be in quadrature for...
View ArticleRE: DRV8305 low VGS_TH concern
Hi Alan, It may have a problem at minimum dead times. The DRV8305 allows adjustment of the dead time, allowing you to insert more time for the FET to completely turn off.
View ArticleDRV8305 low VGS_TH concern
Will the DRV8305 interlocking have a problem with a very low VGS turn on threshold? The MOSFET I am using turns on at 0.8V. Other manufacturer's gate drivers sense this as a failure and shut off.
View ArticleRE: DRV8305 Input as a High Side Monitor for low voltage inverter?
Hi Alan, Which device variant are you using, DRV8305N, DRV83053, or DRV83055? If DRV8305N what voltage are you placing at VREF? I think you may run into a problem if the two inputs separate by more...
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RE: DRV10975 tuning: current probe recommendation
I have an old 'scope that would not recognize a USB drive that was "too large". It took me a while to find a 128 MB drive.Here are some traces of my motor operating at 10 Hz open loop. I can see an...
View ArticleDRV10975 tuning: current probe recommendation
The Tuning Guide seems to rely heavily on current measurements. Am I correct in assuming that I really should have a current probe?I bought one for this purpose, but evidently the bandwidth is not...
View ArticleRE: DRV8305 Input as a High Side Monitor for low voltage inverter?
Have not chosen one. Max current will be 400A across 0.0005ohm resistor so 0.2V. So less than 0.5V
View ArticleDRV8305 Input as a High Side Monitor for low voltage inverter?
I want to confirm that the current sense circuit can work on high side monitoring if the inverter voltage is lower than 5V. So max voltage across the current sense amp inputs is 5V but typically 4V.
View ArticleRE: BoostXL-DRV8301 Current Sensing
Hi Nick,the opamp outputs for the current sense in the BoostXL-DRV8301 (IA_FB, IB_FB, IC_FB) are all connected to 56 Ohm series resistors in parallel with 2200 pF caps before reaching ADC pins on the...
View ArticleBoostXL-DRV8301 Current Sensing
Hi folks,I'm working on designing a higher current version of this board and beginning to route the current sense leads from a larger 0.002 ohm sense resistor. I'm curious about the importance of lead...
View ArticleDRV8821: DRV8821
Part Number: DRV8821using DRV8821 , It works fine with a step motor with 2.5 ohm resistance. However with other set motor with a resistance of 100 ohm , The motor is making noises and is not moving....
View ArticleRE: DRV8301: Protection of DRV8301 and MOSFETS
It is a BLDC ESC. It uses STM32F103 with DRV8301 to drive a motor from 4S lipo battery.I built my ESC on Piccolo MCU and DRV8305. I used examples from TI datasheets. But I found several examples where...
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RE: Noise in voltage when Run_identity flag is enabled.
This snapshot is for 24V DC bus voltage noise.This is for Va sense which is going to Instaspin. All the sense Voltages and Current are having the same pattern.
View ArticleRE: DRV8301: Protection of DRV8301 and MOSFETS
Hi Roman, The discrete components included in the top schematic you linked are uneeded for the DRV8305. In section 7.3.8.3.2 (Page 27) of the DRV8305 datasheet outlines the different integrated gate...
View ArticleDRV8301: Protection of DRV8301 and MOSFETS
Part Number: DRV8301This schematic is used to drive a brushless motor with DRV8301. But the datasheet of DRV8301 doesn't show the diodes. What is their...
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