TI DRV8301 bldc motor control - problem with the PWM
Hi!I'm using an Three Phase BLDC & PMSM Motor Kit with DRV8301 and Piccolo MCU together with an bldc-motor.When I'm testing my board without the motor the pwm in Phase A and B work. In Phase C it...
View ArticleRE: DRV120 ROSC resistor change
How can I send some files like pdf's and excel files and jpg, bmp to you?
View ArticleRE: TPL7407L - Regulation Circuitry
Hello Matsumoto-san,The internal structure of the device is TI proprietary information. In general, driver circuitry is used to drive each of the gates of the 7 FETs to help to reduce on state...
View ArticleTPL7407L - Regulation Circuitry
Hi allWould you mind if we ask TPL7407L?On the datasheet P7, the datasheet shows "Regulation Circuitry" .Does "Regulation Circuitry" has per driver?(Are there seven Regulation Circuitry? or only one...
View ArticleRE: DRV120 ROSC resistor change
Hi Marcel,Please select the "Use rich formatting" option on reply. Once selected the options to insert media (jpg and png files) or attach files will be available.
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RE: DRV10970 - Sinusoidal output & speed variability
Hi Krushal,I'm now trying to finalize my design for some evaluation testing. I'm trying to calculate duty cycle required for a given motor speed. Based upon the motor datasheet per above, and the 8:1...
View ArticleRE: DRV10970 - Sinusoidal output & speed variability
Hi Dave,Based on the picture, amplitude of current out to motor seems to be about the same whether you are in trap or sine mode and period of hall signals looks about 15mS. I also see that U-V voltage...
View ArticleRE: DRV10970 - Sinusoidal output & speed variability
Dave, I am scratching my head now. if input duty, amplitude of current, applied voltage and RPM are same. Can you explain me what is the concern?
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DRV10970 - Sinusoidal output & speed variability
I am working to develop a BLDC motor driver. The selected motor is a Faulhaber 2622, 6V version, datasheet attached. I'm using the DRV10970 eval board and have configured the board properly such that...
View ArticleRE: DRV 8825 EVM USB Opcode for DIR
Hi Ralph, There is no example code to control the board over Linux. The board port is assigned when it is plugged in. DIR is set using a GPIO. I don't recall if TBCCTL4 is used, but the mcu source code...
View ArticleDRV 8825 EVM USB Opcode for DIR
I wish to control the EVM board on a Linux system.First, is there any example code to control the board over Linux?If not, AppDeff.h in the firmware gives the opcodes, which I believe I send to the USB...
View ArticleRE: Question for TI Reference Design : AC 230V Current Controlled Solenoid...
Hi Inkoo, The current-sense variation is mainly from DRV110 comparator offset voltage and reference level variation voltage. Since the current variation spec in the datasheet is determined with a 1-ohm...
View ArticleQuestion for TI Reference Design : AC 230V Current Controlled Solenoid Drvier...
Hello,I have a question for TIDA-00284 Reference Design with DRV110.As my understanding, the resistor connected to HOLD pin of DRV110 used to set I HOLD current, and the equation is 150mV/R SENSE for...
View ArticleDRV8303 control register1 resets automatically after configuring it...
We are trying to configure the Control register 1 of DRV8303 with the hex value 0x128A. We are operating on Current limit mode.We have observed that for once it configures the CR1 correctly and we have...
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RE: DRV592 FAULT0 ACTIVE
I recorded all the signals present at the DRV592 with the oscilloscope. The signals are shown in the appendix (DRV_signals_05.emf and DRV_signals_05.fig [Matlab figure for zoom]). The signals were...
View ArticleRE: DRV592 FAULT0 ACTIVE
PLEASE LET ME KNOW YOUR ADDRESS EMAIL SO THAT I CAN SEND YOU ALL THE SIMULATION FILES....
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DRV592 FAULT0 ACTIVE
HI,please find below the feedback from my customer HD.I have another question about the DRV592 device. The DRV592 is now implemented in a printed circuit assembly and is operated within the nominal...
View ArticleRE: DRV10970 - Sinusoidal output & speed variability
I think you are misunderstanding. RPM is NOT the same. If you observe the measurements and the period on Channel3, Hall sensor period varies between the two from 15.41ms to 14.85ms. This corresponds to...
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