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RE: DRV10983 startup problem
Hi Krushal,I not sure your "reducing the open loop current" means change open loop current value on startup setting.If so, right now my setting is 0.4A and enable double output PWM frequency.I found if...
View ArticleDRV10983 startup problem
Dear Sir,I have one BLDC motor (Maxon EC motor 30W 404080).This motor run few seconds and then stop when spin in open loop.I have two questions.1. Why motor stop during startup?2. Does DRV10983 support...
View ArticleRE: TPL7407L - the difference between Maximum Output Current Figure.4 and...
Matsumoto-san,I understand more clearly now. Yes, Max Collector Current and Max Output Current mean the same thing in this case.Let me know if you have any further questions.Best,Michael
View ArticleRE: Selection of Motor fro Car Automation
We have moved your post to the appropriate forum.
View ArticleRE: DRV120 ROSC resistor change
Hi Marcel, Our experts have been notified and should reply soon.
View ArticleRE: DRV120 ROSC resistor change
Marcel,Thank you for posting about this. We are working to recharacterize this device and update the data sheet. In the meantime, please use a resistor greater than 160k on the OSC pin.
View ArticleRE: Selection of Motor fro Car Automation
A quick web search shows that most electric vehicles are driven by either brushless DC or induction motors.
View ArticleSelection of Motor fro Car Automation
Hello, My UG/PG/Ph.D Students are doing a project on Car automation. They want to drive the car by motors only, without IC engine, similar to Reva cars. What sort of car? is it DC motors/stepper...
View ArticleRE: DRV10970 Datasheet
Hi Blake, It does appear to be missing Table 2. We have contacted our experts and expect them to reply soon.
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RE: DRV10970 Datasheet
Hi Blake,Please see table below. Janet will have to add the footnotes at a later date.
View ArticleDRV10970 Datasheet
It appears there is a missing Table 2 on page 17 of the DRV10970 Datasheet. There is a label for Table 2 Trapezoidal Commutation With 0° Hall Placement but no table follows. Is that table available?
View ArticleRE: Does PWM affect max torque of motor?
Hi Aniket, Changing the duty cycle can affect the current through the motor. This can depend on the decay mode when PWM'ing. If coast mode is used the average current is less than brake mode when...
View ArticleDoes PWM affect max torque of motor?
I have referred a few posts saying, "Lowering PWM duty cycle cannot lift my robotic arm" and even faced such situations myself. I understand that : RPM varies with voltage and Torque varies with...
View ArticleRE: DRV120 ROSC resistor change
Dear mr Lockridge When we use a resitor of 160k we get a frequency of around 12 to 15Khz. C6 has a value of 2u20. I see that i have forgotten to give this value. So I suppose the formula to calculate...
View ArticleRE: DRV120 ROSC resistor change
When we use a resistor of 200k we get a frequency of about 10.5Khz. We wanted to get the freqency out of the hearing range to above 20kHz
View ArticleRE: DRV120 ROSC resistor change
When we use a 120k resistor we get a frequency of 18-22kHz and a tkeep of 180ms. When we use a 100k resistor we get a non stable frequency of 28kHz and a tkeep of 2ms. 68k gives freq of 60kHZ and tkeep...
View ArticleRE: DRV120 ROSC resistor change
When we use no resistor it does not work. (What we expected) With 0R the frequency is 21kHz and the tkeep is 158ms.
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