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DRV8412 GUI connection.
Hello all,I am using a DRV8412  C2 Kit, and I am having issues with the GUI. I keep getting a connection issue with the TI board, I am able to connect the F28035 through CCS, I ran a couple of codes in...
View ArticleRE: DRV8711 setup
Hi Pavlin, The motor manufacturer can tell you the optimal speed of the motor. It is usually listed on the datasheet along with the voltage to achieve the speed. The datasheet will also list a maximum...
View ArticleRE: DRV8711 setup
Hi! I think I did it! BUT my PCB is designed to control 5 drivers(5 step motors). The problem is when I tried to run more then 1 motor, the pcb is experiencing a lot of dv/dt and di/dt disturbances. So...
View ArticleRE: DRV8711DCPR
Hi Jagdish, The IFS setting is 5.5A. For a gain of 5 and a current of 0.35A, the TORQUE setting should be 0x105. Assuming you are running VM at > 12V, the motor current is likely higher than...
View ArticleRE: DRV8711 setup
Hi Pavlin, From the firmware side: If possible, lower the torque setting of any motor when holding. This may reduce the current needs of the system. Lowering the IDRIVE and TDRIVE settings is a good...
View ArticleRE: sensing current
Hi Prakhar, Please refer to the Figure 6. xISEN is the source of the low side FETS. As current flows through the sense resistor to GND, the voltage across the resistor is monitored by the internal...
View Articlesensing current
We were facing some problem in DRV8834 for measuring current from the designated current sensing pin for a stepper motor. We are using the same circuit as mentioned in datasheet figure 13 but not able...
View ArticleRE: DRV8302 wiring (PullUps, ..)
1) Correct. See note 1 on page 8.2) Incorrect. If there is no resistor and the pin is floating it will see a high resistance which correlates to a larger dead time. What is gained by leaving DTC...
View ArticleRE: DRV8302 wiring (PullUps, ..)
thank you very much. I haven't started routing the PCB yet, but maybe it could save some place.
View ArticleRE: Operating a set of Proportional Solenoid Valves
Hello Mr. Zuo, My apologies on the slow reply. Certainly I could use two DRV8803 drivers to address 5 outputs, no problem there. I'm more concerned as to what current will be output by the device and...
View ArticleRE: Newbie -- Need help with compiling PM Sensorless project with Piccolo...
Thanks, Rick.  Turns out that Motorware has it's own set of "projects" and they are all up to date and working.
View ArticleRE: DRV8312 Complementary PWM quiescent current
Hi Rob, We will investigate and get back to you. Do you have a scope capture of the standard PWM for comparison?
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DRV8312 Complementary PWM quiescent current
Hi,I've been using the DRV8312 for the past few months to drive motors with the standard PWM scheme with no problems...However, I recently changed the control scheme to complementary PWM in order to...
View ArticleDRV8312-69M-KIT code changing
Dear sir,I am using DRV8312-69M-KIT kit right now. I am trying to tap the inputs which given to DRV8312 on the development board, give then as inputs to another my own circuit which includes DRV8302...
View ArticleRE: sensing current
Dear Rick, Thanks for the reply We made a custom PCB to drive a stepper motor .The schematic was as per figure 13 of the TI. We could not either drive the motor let alone measure the current. We...
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RE: DRV8312 Complementary PWM quiescent current
Hi Rick,When the motor is stationary with the standard PWM scheme, both phases are low, since the duty cycle is 0.However, for the motor to be stationary using the complementary scheme requires that...
View ArticleRE: sensing current
Hi Prakhar, Figure 13 is configured to drive a stepper motor using PHASE/ENABLE. The breakout board is configured to use the indexer (STEP/DIR). If you intend to drive the stepper using the indexer,...
View ArticleRE: DRV8312 Complementary PWM quiescent current
Hi Rob, Thanks for the scope captures. Since the outputs are continuously on during complementary mode, there is extra current versus the 0% duty cycle in standard mode. There are a few possible...
View ArticleRE: DRV8825 Problem
Hi Aniket, As long as the DRV8825 is operating properly and VM remains above the UVLO voltage, the motor should turn. I have seen bad connections from the board to the motor cause problems. Please...
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