Part Number: DRV10987
I am user DRV10983Q1 and DRV10987 , the same board , motor and configure， DRV10983Q1 run very good,but DRV10987 not run . DRV10987 Not move at all for any configure, why? Test 3 boards, the same result..
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DRV10987: what difference between DRV10983Q1 and DRV10987？
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DRV8305-Q1: DRV8505NE_REG pin Current Consumption
Part Number: DRV8305-Q1
Dear, Sir.
My customer is considering to apply DRV8305NE for their system.
Now, they are making a question about REG pin current consumption which will
not be difined on the datasheet.
They will supply 5V to VREG, and will use only 1 CS AMP(SN & SP will be
connected to GND, SO will be floating).
Could you please give your advice about VREG pin current consumption
under such condition.
Best Regards,
H. Sakai
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DRV8847SEVM: External I2C communication connections
Part Number: DRV8847SEVM
Dear team,
One of my customer is trying to simulate I2C with GPIO of C2000 to control DRV8847.
However, we found that if we set F28069 GPIO and then config it as input, the SDA voltage level will become 2V rather than 0, when then ACK signal of DRV8847 arrives.
We believe it is a circuit level problem rather than software.
My question is: if we try to use GPIO as I2C to control DRV8847 on DRV8847SEVM, do we need to modify the board(change resistor or move jumpers)?
I have connected SDA, SCL, nSLEEP and GND， what else do I need to do?
Can you provide the schematic of this EVM?
Thanks a lot!
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RE: WEBENCH® Tools/DRV8307EVM: DRV8307EVM didn't work when using motor with 3 single hall wires
- Using the DRV8307EVM drive motor (BLWR132S-24V-4000), the motor will be very hot in a few minutes. But we use the motor company's EVM board (MDC050-050051 series), the motor has no more temperature.
- According to the motor speed, the current of the DRV8307EVM board drive motor is 0.6 - 2.0A, and with a lot of heat, the motor is very hot. The current of the MDC050-050051series board drive motor is 0.15 - 0.45A, and no heat is generated.
- We need to have a faster speed. After the same PWM input, the DRV8307EVM can meet our requirements, but MDC050-050051 does not, it only has 1/3 speed. The fly in the ointment is that the former makes the motor very hot. Is there a way to keep the motor not hot?
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WEBENCH® Tools/DRV8307EVM: DRV8307EVM didn't work when using motor with 3 single hall wires
Part Number: DRV8307EVM
Tool/software: WEBENCH® Design Tools
I have a motor with 3 hall sensor wires (single end). I connected all wires to DRV8307EVM board that following User's Guide step by step setup, but the motor didn't work normally when power turned on. The red LED is slowly flash always. The motor is overheat after turn on about 4 minutes. The motor stop run after rotated few seconds, then The motor run after stop few seconds. The motor is the work that is going on and off with red LED slow flashing. Could you tell me how to fix the issue?
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RE: DRV8871: DRV8871 only working on Out2
Just to say this issue was resolved. It was a faulty regulator, it was giving out more than 5v. Do not know why the rest of the circuit worked.
Thanks
Thanks
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RE: DRV8870: Failure reaction of DRV8870
Hi Denis,
For MTBF, please go to www.ti.com/.../pinout-quality
Under DPPM / MTBF / FIT Rate select view.
For MTBF, please go to www.ti.com/.../pinout-quality
Under DPPM / MTBF / FIT Rate select view.
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DRV8870: Failure reaction of DRV8870
Part Number: DRV8870
Hi,
My customer is using this part for the MFP application, because it has been used to drive paper cutter in the MFP.
Customer wonder if we are having some report or document discuss about what is the reaction that DRV8870 may have.
This will help for their safety analysis.
Please let me know if there are this kind of document.
thanks for your help.
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RE: DRV10987: what difference between DRV10983Q1 and DRV10987？
Hello Lun,
There are a few differences between the DRV10987 and DRV10983-Q1 but let's get the basics first. Upon loading the configurations settings to the DRV10987, can you please read back the EEPROM registers to make sure that the writes were successful? If they were, then can you please post your settings here? If not, can you please tell me the method you are writing to the registers? For example, using the DRV109xx GUI, using a separate MCU, using the EVM, using a custom board, etc.
Note, if you are using the DRV109xx GUI, a DRV10983-Q1 save configuration file will not work with the DRV10987. You will have to manually set the settings in the GUI and save a separate configuration file for the DRV10987.
Best,
-Cole
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RE: DRV8843: datasheet has differnet pinout and layout diagrams!
Nima,
Thank you for catching this. The diagram in "Pin configuration and Functions" is correct.
Please use DRV8841 datasheet Figure 11 "Layout Recommendation" as reference for now. We will update the datasheet to correct error.
Thank you for catching this. The diagram in "Pin configuration and Functions" is correct.
Please use DRV8841 datasheet Figure 11 "Layout Recommendation" as reference for now. We will update the datasheet to correct error.
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DRV8843: datasheet has differnet pinout and layout diagrams!
Part Number: DRV8843
Hello,
I was looking at DRV8843 datasheet (http://www.ti.com/lit/ds/symlink/drv8843.pdf) and I had some confusion. Two diagrams in the datasheet do not match and I was wondering if I am missing something.
The pinout diagram,
The layout diagram,
Is there a reason why these two pinouts are different? Which one is the correct one?
Nima Eskandari
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RE: DRV8871: DRV8871 only working on Out2
Tim,
I am glad to hear the issue was resolved and thank you for giving update here.
Please let me know if you need further support.
I am glad to hear the issue was resolved and thank you for giving update here.
Please let me know if you need further support.
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DRV8871: DRV8871 only working on Out2
Part Number: DRV8871
Hi,
I have an application where I drive a miniature peristaltic pump using the DRV8871. Its worked great in the past with no issues. I purchased a new batch that's going on an existing board. The trouble is now only out2 works. Out1 fails to drive at all.
I have tried every combination of options trying to resolve it
Another chip (same batch) Same issue
Swapping the inputs, Same issue
Changed the ilim resistor from 15k to 22k same result no drive on Out2
I dug out an old working board and swapped the old chip with the new and it is the same no drive on Out2
So yesterday I ordered direct from TI a new batch, but looking at the tracking it seems to be coming from Digikey where I purchased the last batch.
Is there any other way to diagnose why only Out2 is working? I have on order some DRV8870 so will see what happens with that (I know about the ilim change, I will tie 5v to the input and keep ISEN tied to Grnd)
Thanks
Tim Box
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RE: DRV8802: DECAY pin
Hamamoto-san,
The image below shows the network on the DECAY pin.
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RE: DRV10987: Spread spectrum modulation control
Jonathan,
I've confirmed your results. I don't see any measurable difference when using the spread spectrum features in DRV10987.
(Please visit the site to view this file)
I will report back to the design team, but I don't expect a silicon revision.
Regards,
Brian
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DRV10987: Spread spectrum modulation control
Part Number: DRV10987
Hi guys,
i have a question regarding the DRV10987 spread spectrum modulation control functionality.
According to the datasheet, one can set the CONFIG1 Register Bit 15:14 for spread spectrum modulation control as follows:
00: No spread spectrum
01: ±5% dithering
10: ±10% dithering
11: ±15% dithering
For testing, i have attached a current probe into one motor phase, connected it to a spectrum analyzer and captured the following screenshot
- No SSM -> green trace
- 15 % dithering -> yellow trace (Similar results can be seen with ±5% dithering and ±10% dithering.)
PWM freq was set to 50 kHz. One can clearly see the peak and its harmonics. However, I would have expected the peaks to more or less disappear and the overall noise level to rise when enabling the SSM.
Any suggestions? Am i doing something wrong? To me, it looks like the PWM frequency is shifted but not increased regarding the bandwidth.
Help is highly appreciated.
Thanks in advance, Jonathan
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RE: DRV10987: drv10987
Motionfire Motor Control Reference Design (FireDriver Module)
(ACTIVE) MOTIONFIRE-MOTORCONTROL-REF
Description & Features
Technical Documents
Support & Training
Order Now
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
Description
The FireDriver Module is a galvanically isolated plug-in power module which plugs onto the FireFighter platform. Each Module includes a Max-II CPLD and provides 24 phases or support for up to 12 motors. The 4-phase drivers provide up to 10A per phase at a DC bus voltage of 50VDC.
(ACTIVE) MOTIONFIRE-MOTORCONTROL-REF
Description & Features
Technical Documents
Support & Training
Order Now
View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
Description
The FireDriver Module is a galvanically isolated plug-in power module which plugs onto the FireFighter platform. Each Module includes a Max-II CPLD and provides 24 phases or support for up to 12 motors. The 4-phase drivers provide up to 10A per phase at a DC bus voltage of 50VDC.
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RE: DRV2605: Cannot get haptic feedback either with LRA or Piezo
Hi Leonid,
Welcome to E2E, thanks for your interest in our devices.
My colleague is out of the office, so He will be responding tomorrow with further information.
Best Regards
José Luis Figueroa
Audio Applications Engineer
Welcome to E2E, thanks for your interest in our devices.
My colleague is out of the office, so He will be responding tomorrow with further information.
Best Regards
José Luis Figueroa
Audio Applications Engineer
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DRV2605: Cannot get haptic feedback either with LRA or Piezo
Part Number: DRV2605
Hello,
I am trying to get a haptic feedback either using LRA motor with DRV2605, or using piezo with DRV2605/DRV2700 (based on application report SLOA255).
When using just LRA, the haptic feedback is barely noticeable. However, when the LRA is driven directly from a power supply, the feedback is strong.
When using the DRV2700 with a signal from DRV2605, there is no feedback can be felt. I also notice that the FB pin does not output 1.3V. Thus my PVDD signal is around 10V instead of 65V.
Attached is the schematics of the haptic driver circuit. The selection between Piezo or LRA is done using J1 and J2 jumpers.
LRA motor - 1020-15-003-001 (www.digikey.ca/.../j2rmtd)
Piezo - Z63000Z2910Z 1Z 2 (www.digikey.ca/.../j2rm8v)
I am looking for any possible recommendation.
Thank you.
Regards,
Leon
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RE: DRV8701: Explain the Equation 10 in 8.2.3.2
Hi Fandy,
Sorry for the delayed response.
1、Described in 7.3.10, When VM<12V, VCP=2*VM - 1.5V ,Vcp provides HS Gate driver, VG=VCP=2*vm-1.5V, if HS MOS switch-off, VS=0 ? if HS MOS switched-on,VS=Vbat ,so VGS=VG-VS=2*VM-1.5-Vbat < VGS CLAMP, Assume VGS CLAMP=10.5V, So VGS=2*VM-1.5V-Vbat<10.5V , VM<(12+Vbat)/2, it seems a little differet from EQ10;
>>> Equation 10 is a rough approximation. It is intended to be used considered when VBAT is below the minimum recommended operating voltage. The equation works until 11.5V. In most cases, there is no need to boost VM when operating above the minimum operating voltage. The Vgs will be sufficient to turn on the FETs (Vgs of 4V typical at VM=5.9V, Vgs of 6.4V at VM=8V).
2、Described in 7.3.10,When VM>12V,VCP=VM+9.5 =VG,if HS MOS switch-off, VS=0 ? if HS MOS switched-on,VS=Vbat, VGS=VM+9.5-Vbat<VGS CLAMP ,so VM>12V, it is easy to trigger VGS CLAMP;
>>> Equation 10 is not intended to be used above 11.5V. The device will provide Vgs of 9.5V typical.
3、Described in 7.3.12, When VGS trigger VGS CLAMP, the Clamp Diode will conducting to clamp voltage to 10.5-13V, only if Clamp Diode was burn out, it maybe damage FETs.
>>> Equation 10 is not intended to be used above 11.5V. The device will provide Vgs of 9.5V typical.
if above viewpoint ids right ? and please answer my questioin,thanks
Sorry for the delayed response.
1、Described in 7.3.10, When VM<12V, VCP=2*VM - 1.5V ,Vcp provides HS Gate driver, VG=VCP=2*vm-1.5V, if HS MOS switch-off, VS=0 ? if HS MOS switched-on,VS=Vbat ,so VGS=VG-VS=2*VM-1.5-Vbat < VGS CLAMP, Assume VGS CLAMP=10.5V, So VGS=2*VM-1.5V-Vbat<10.5V , VM<(12+Vbat)/2, it seems a little differet from EQ10;
>>> Equation 10 is a rough approximation. It is intended to be used considered when VBAT is below the minimum recommended operating voltage. The equation works until 11.5V. In most cases, there is no need to boost VM when operating above the minimum operating voltage. The Vgs will be sufficient to turn on the FETs (Vgs of 4V typical at VM=5.9V, Vgs of 6.4V at VM=8V).
2、Described in 7.3.10,When VM>12V,VCP=VM+9.5 =VG,if HS MOS switch-off, VS=0 ? if HS MOS switched-on,VS=Vbat, VGS=VM+9.5-Vbat<VGS CLAMP ,so VM>12V, it is easy to trigger VGS CLAMP;
>>> Equation 10 is not intended to be used above 11.5V. The device will provide Vgs of 9.5V typical.
3、Described in 7.3.12, When VGS trigger VGS CLAMP, the Clamp Diode will conducting to clamp voltage to 10.5-13V, only if Clamp Diode was burn out, it maybe damage FETs.
>>> Equation 10 is not intended to be used above 11.5V. The device will provide Vgs of 9.5V typical.
if above viewpoint ids right ? and please answer my questioin,thanks
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