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RE: DRV8305 Damage
Hi Rick,I tried 3 different boards. All boards falling fault PVDD_UVLO2. Input volage 12 V. Scope screenshootsYellow EPWM1A, input DRV8305 INH_A,Aqua EPWM1B, input DRV8305 INL_A,Green output DRV8305...
View ArticleRE: Q_D axis resistance and inductance
Hi Mark,Our experts have been contacted and should reply soon.
View ArticleRE: Current Measurement with DRV8303
Hi Jared,This post was answered in ( LINK )As Nick pointed out, the current works out to 1.9209 A. The voltage provided by the multimeter is an average voltage. Assuming you are measuring the SO1 with...
View ArticleCurrent Measurement with DRV8303
Hello,Using the DRV8303, we are trying to measure the current across a low-side shunt at 1 mOhm. The connection is the same as RS1 on page 21. We have the REF pin at 3.3 Volts. In all cases I am...
View ArticleRE: DRV8803 PWM duty cycle floating point handling relate issue
Hi K. Manjunathan,Thank you for your inputs. Based on those, the best fit may be the TPL7407L.I will contact the group responsible for that device for confirmation, and ask them to reply here.
View ArticleRE: Q_D axis resistance and inductance
no, the R and L are not in a different reference. they are the actual Rs (ohm) and Inductance (henry) that can be measured. it depends on your observer if the values should be phase to phase or phase...
View ArticleRE: DRV8305 Damage
Hi Salih, If failing PVDD_UVLO2, this is usually an indication of lack of bulk capacitance in the system. Please monitor the PVDD voltage at the DRV8305 for droops when starting the motor. If drooping...
View ArticleRE: Q_D axis resistance and inductance
Hi Mark, Yes, you should represent the values as they would appear in the d-q reference frames. For a permanent magnet motor with no saliency, the values for d and q will be the same. If there is...
View ArticleQ_D axis resistance and inductance
HiI am using the DMC library to control a bldc motor with FOC, i saw Dave Wilsons lecture on how to set the PI current controller coefficient (Kp,Ki) with respect to the RL constants of the motor.if i...
View ArticleRE: BLDC Motor with current regulation
Hi Rick-san, I tell you additional information. The constant speed is 8000rpm, current is less than 0.6A. Could you give me any idea? Best Regards, Naoki Aoyama
View ArticleBLDC Motor with current regulation
Hello,Our customer looks for BLDC motor driver IC.His application is below.1) Take up a tape from reel with constant speed2) When it finished, strain a tape with constant currentDo you have any driver...
View ArticleRE: DRV8803 PWM duty cycle floating point handling relate issue
Thank you Mr. Rick Duncan I have checked the Simple Application Schematic in the datasheet of TPL7407L 40-V 7-Channel Low Side Driver . The application schematic is totally different when compared with...
View ArticleRE: DRV110 for 1000Watts solenoid driver
Hi Elango, Our expert of this part will be noticed. Best regards,
View ArticleDRV110 for 1000Watts solenoid driver
Dear Engineers,Please let me know the below design will meet using the DRV110 solenoid driver...Our Requirement is,Inductance of the solenoid = 25mHResistance of the solenoid = 11.5 ohmPeak current...
View ArticleRE: Driver for Voice Coil Motor
Hi Na, We are more familiar with DRV motor driver device here. One possible way is to control the current through DRV8x "Vref to current" close loop. Many of our DRV8x device have this function. Ex....
View ArticleDriver for Voice Coil Motor
HiWe are looking for a VCM driver that meets the following.VCC:12V-15VINPUT: Analog Input. 1.8Vpp/2KHz (almost sine wave).OUTPUT: 3.5Vpp, 1A.DRV201 is a special driver for VCM but it does'n have analog...
View ArticleRE: DRV8803 PWM duty cycle floating point handling relate issue
Hi K.Manjunathan, The two devices are not pin compatible. The input control is the same, but the TPL7407L does not have the fault, sleep and reset pins. I have not heard back from the expert on this...
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RE: DRV8305 Damage
PVDD signal as shown capture. When start motor hapening short circuit and PVDD_UVLO2 fault.Bulk capacitance about 2000uF and power supply 8A. But when i use TIDA-00643, this board draw current 2-3A .If...
View ArticleRE: DRV110 for 1000Watts solenoid driver
Hi Elango, Regarding the PWM, it only controls the frequency that the DRV110 checks the current. For these high current / high inductance cases , it can result in an effective frequency which does not...
View ArticleRE: Integrated Motor Current Driver Solution
Hi Mario, Sorry, we do not have an integrated device that can handle the your requirements. There are examples of how to create a solution using the DRV8301 and a C2000. Have you looked at the DRV8301...
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