Part Number: DRV8870
i want to drive a dc motor using DRV8870 in Forward and Reverse Direction
but i getting confused on which pins i should apply the pwm signal,
there is IN1 and IN2
please suggest the connection
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DRV8870: how to connect pwm signal so that i can very the speed of motor in forward and reverse direction.
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RE: DRV10983: Supply voltage register(Reg:0x1A) at EEPROM programming
Hello Tao2199,
I apologize for the long delay.
One way to check the voltage supply when the motor is not operating is to disable sleep/standby for the device. This can be done on the display tab of the GUI or register 0x03 and bit [7]. When in sleep/standby mode, the device will not be able to read the register like you mentioned.
You may run into the problem with having your device starting up in standby mode, this can be fixed by applying a speed command so device exits sleep mode, writing to the register, and then turning off the speed command. Do some functional tests with the default settings, the time it will take to do the write command is not likely to damage the motor. You could even initate the speed command using I2C if it would make your programming easier.
Once your EEPROMs are set, you should be able to reenable sleep/standby mode, if you so desire.
Best,
-Cole
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DRV10983: Supply voltage register(Reg:0x1A) at EEPROM programming
Part Number: DRV10983
Hello,
Regarding to the supply voltage register(Reg:0x1A) on DRV10983 ,my customer is asking some question.
(Question)
(1) This register is supported only during motor operation.
My understanding is correct?
Because It is described on sample code in target board( DRV10983EVM-TB).
But the motor is not operated on this board ,and it recommends motor stopping at EEPROM programming.
So, I’m asking that just in case.
(2)If it is not supported during motor stopping, do you have anything good idea for monitoring supply voltage(>22v) at EEPROM programming?
(I don’t know the behavior of other motor on default EEPROM value.)
Regards,
Tao2199
[View:/cfs-file/__key/communityserver-discussions-components-files/38/I2C_5F00_MSP430G2553.c:1230:0]
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RE: BOOSTXL-DRV8323RH: Using PWM to control motor torque?
Hi Rick,
Thanks for the pointer - maybe a more simple rephrasing of my question. Is it possible to adjust the current output of the BOOST DRV8323RX EVM?
Using the module in 1x PWM mode does not directly give this option when plugged into our PWM source. Can the motor driver firmware somehow be changed before it is switched to external control (1x) mode?
Thanks again,
Chris
Thanks for the pointer - maybe a more simple rephrasing of my question. Is it possible to adjust the current output of the BOOST DRV8323RX EVM?
Using the module in 1x PWM mode does not directly give this option when plugged into our PWM source. Can the motor driver firmware somehow be changed before it is switched to external control (1x) mode?
Thanks again,
Chris
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BOOSTXL-DRV8323RH: Using PWM to control motor torque?
Part Number: BOOSTXL-DRV8323RH
Hi,
I am working with the boost motor driver attached to a 3-phase brushless motor that I want to use to produce a certain amount of torque. My understanding is that this is a velocity controlled motor driver - and since force / torque is proportional to acceleration, it may not be possible to do so with this driver. The only parameter I can change is PWM, which I believe effects speed and current draw. But I am not sure how this behaves under a resistance from whatever actuator the motor is moving. PWM input is given by a Raspberry Pi.
Is there a way I can use this motor driver to produce a known torque?
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RE: DRV8320: Schematic for the BOOSTXL-DRV8320H EVM? Stand-alone connections?
Hello Mark,
The schematic is under the design files section BOOSTXL-DRV8320H EVM Hardware files. www.ti.com/.../boostxl-drv8320h.
For stand-alone test set up please check the pin header connections on the board. J1 and J2 give access to all control pins needed.
The EVM and available GUI is ready to be used wit the MSP430F5529 launch pad, that is correct. For any other controller, you would have to implement your own SW. Thank you.
The schematic is under the design files section BOOSTXL-DRV8320H EVM Hardware files. www.ti.com/.../boostxl-drv8320h.
For stand-alone test set up please check the pin header connections on the board. J1 and J2 give access to all control pins needed.
The EVM and available GUI is ready to be used wit the MSP430F5529 launch pad, that is correct. For any other controller, you would have to implement your own SW. Thank you.
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DRV8320: Schematic for the BOOSTXL-DRV8320H EVM? Stand-alone connections?
Part Number: DRV8320
Hello Motor Control folks!
I would like a schematic for the BOOSTXL-DRV8320H. There does not seem to be a schematic in any of the DRV8320 documentation.
Also - I would like to know what the correct connections are for a stand-alone test set up. The BOOSTXL-DRV8320H only talks about using the EVM with the MSP430 booster pack.
Thanks!
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RE: DRV591: selection of inductance in DRV591
Hi Lilian,
Please feel free to let us know if you have any more question on this. If not more question, could you please help to close it? Thanks.
Best regards,
Shawn Zheng
Please feel free to let us know if you have any more question on this. If not more question, could you please help to close it? Thanks.
Best regards,
Shawn Zheng
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DRV591: selection of inductance in DRV591
Part Number: DRV591
Hi team,
Could you please help to review the attached schematic design and help to confirm if customer can change L5204/L5205 from 10uH to 2.2uH?
will the change have impact to the performance or the output capacity?
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DRV10983: Motor configuration file
Part Number: DRV10983
Hi
We can not refer configuration file for Runtian motor and teleconotion motor.
According to user guide of EVM, these files should be located in GUI software folder but not found.
How to obtain configuration files for two motor from official web site, or latest software tool?
BestRegards
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RE: DRV8884: RMS current measured is not as expected
We need 75mA rms current , so 106mA full scale current. With these the resistor would be 282K. Please confirm. And also, how much can be the tolerance?
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DRV10983: connect of motor temp sensor
Part Number: DRV10983
Hello,
customer needs to monitor the motor temperature. Is it possible to connect a temperature sensor to the DRV10983 in case he wants to run the DRV10983 standalone.
Regards, Holger
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RE: DRV8825 microstepping large errors
Hi Rick,
I have just fallen into the same trap...
Can't you withdraw the Figure8/9/10 in the datasheet -- they are surely not taken with a DRV8825 -- and make a remark, that microstepping is only possible in fast-decay mode (at the cost of higher current-ripple) ?
Thx
Martin
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RE: DRV8825 microstepping large errors
Hi Martin,
The figures were taken with the DRV8825. There are several factors that determine the ability to control the current.
The motor inductance, resistance, step speed, and system voltage can affect the current control. As the system voltages have been increased to increase motor speed, using slow decay for increasing steps has been more difficult.
The figures were taken with the DRV8825. There are several factors that determine the ability to control the current.
The motor inductance, resistance, step speed, and system voltage can affect the current control. As the system voltages have been increased to increase motor speed, using slow decay for increasing steps has been more difficult.
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RE: DRV8302: High Voltage Design
Hi Dannytt,
You cannot bypass the voltage. Please look at the www.ti.com/.../TMDSHVMTRPFCKIT kit.
You will need a device that can translate low voltages to high voltages (an example is the LM5107 although it does not operate at 200V).
You cannot bypass the voltage. Please look at the www.ti.com/.../TMDSHVMTRPFCKIT kit.
You will need a device that can translate low voltages to high voltages (an example is the LM5107 although it does not operate at 200V).
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DRV8302: High Voltage Design
Part Number: DRV8302
I need design a 200 V DC BLDC controller, i plan use DRV8302. But it max voltage is 60V only how can i bypass the voltage.
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BOOSTXL-DRV8301: LAUNCHPADXL-F28379D Compatibility
Part Number: BOOSTXL-DRV8301
Hello everyone.
I tried to check if BoosterPack DRV8301 is compatible with Launchpad F28379D. I was sure, that it is. But BoosterChecker told me, they are not. The problem was in BoosterPavk Pin #29 and Launchpad Pin #69, as shown on the picture. BoosterPack sends Phase C current feedback, and the launchdap pin is "CMPIN". But ASAF, Compare function is muxed with ADC. So the Pin #69 of the launchpad can be used as ADC input. The launchpad schema is a little strange with names: ADCINA4 pin of the MCU is named as "Analog Out". The picture is shown.
What should I do? I still think, that there's some mistake or name mismatch. I don't believe, that this launchpad for motorcontrol purposes is not comatible with motorcontrol boosterpack.
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RE: DRV8825 microstepping large errors
Hi Martin,
Sorry, I hit reply too soon.
Our newer steppers have the ability to better regulate current across various motors and voltages. Please look at the DRV8886 and DRV8886AT. These devices also have internal current sensing to eliminate the need for current shunt resistors.
The DRV8886 and DRV8886AT are not pin to pin compatible with the DRV8825.
Sorry, I hit reply too soon.
Our newer steppers have the ability to better regulate current across various motors and voltages. Please look at the DRV8886 and DRV8886AT. These devices also have internal current sensing to eliminate the need for current shunt resistors.
The DRV8886 and DRV8886AT are not pin to pin compatible with the DRV8825.
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RE: DRV8305-Q1: Current sense amp Electrical Characteristics
Hi Cafain,
Can you clarify "event not occurring in output is occurring." What does this mean?
Can you provide a schematic of the output of current sense amplifier and any filtering, plus scope captures showing the input and output voltages of the current sense amplifiers?
Can you clarify "event not occurring in output is occurring." What does this mean?
Can you provide a schematic of the output of current sense amplifier and any filtering, plus scope captures showing the input and output voltages of the current sense amplifiers?
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DRV8305-Q1: Current sense amp Electrical Characteristics
Part Number: DRV8305-Q1
Hi,
1.
Although min and max values are listed in the data sheet,
Request data in graph form showing temperature change (temperature drift) of
"Current sense amplifier gain error", "DC input offset" and "Reference buffer error".
2.
About Current sense AMP
At present, Current sense AMP can not follow when
differential input voltage: 4mV,
cycle: 30μs,
duty: about 50% input,
event not occurring in output is occurring.
What kind of reasons can be considered?
best regards
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