DRV8301 complementary PWM problem
Hi,I think there are still have problem to generate complementary PWM waveform with DRV8301. When I give DRV8301 a 100% duty PWM and slowly reduce the duty, the output(both high side and low side)do...
View ArticleDRV592
Hello,I am trying to use a DRV592 to drive a TEC module and getting too little voltage. The inputs are PWM outputs of an Atmel 328p at 1kHz. The impedance of the TEC module is ~265 mOhm and the TEC...
View ArticleDRV8842 - OCP time
Hi,I'd like to ask about "OCP time" in DRV8842 datasheet (page 10, section "Overcurrent Protection").Could you give me the value of this time? In best case a MIN, TYP und MAX value.I couldn't find it...
View ArticleUsing Absolute Encoders in DRV8312
I have a DRV8312 baseboard and Picolo 6809 control card. I am trying to run the DT4260-24-055-04 BLDC(24 VDC 4000 rpm) motor.I find troubles in doing a closed loop control. I have a few queries...
View ArticleHow to measure the phase current on the drv8313 evm
HiI'm using drv8313 evm with an external control signal from an ezdspF28335 in order to control a 3 phase brushless motor, and i'm developping my own control algorithm to control it i have seen in the...
View ArticleDRV8835 or DRV8836 for Stepper Motor
I'd like to use DRV8835 or DRV8836 to drive a small stepper motor. Is there an Application Note available? Thanks.
View ArticleTMP821 supply voltage range
Hi,Our customer trying to use at below recommended supply voltage 3.5V.They understand this is out of spec, but they want to understand this device behavior in critial condition.In this case, could you...
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TMDSHVMTRINSPIN and ePWM6B
I use TMDSHVMTRINSPIN and I have a problem with ePWM6B. At the DAC2 output I always get about 60 mV. With the same settings on the ePWM7B operating normally, and I get correct voltage on DAC4, in my...
View ArticleDRV8809 shutting down
Hello: I am an FAE with Arrow in Los Angeles. I have a major customer using 100k/yr (in multiple designs) of the DRV8810. They are seeing the chip shut down in their products in the field. I was...
View ArticleDRV8301
I have been trying to determine if the DRV8301 will drive 6 CSD19506KCS N-Channel Mosfets to run a three phase motor. Any advice on the matter would be very helpful. Max current would be 100A.
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DRV8823 current limited
Dear TI Team,I'm currently working on a redesign of a product using your DRV8823 to drive 3 DC motor actuated valves and 1 solenoid valve (old design used 2 L298 motor drivers). The new design also...
View ArticleDRV 8432 parallel mode malfunction
I am using the drv 8432 in the parallel mode. I am NOT driving a motor but an inductive coil (L=470 uH and R = 0.4 ohm). I am using this IC to apply a specific voltage pattern to the coil and recycle...
View Articledrv8825 - copper paste????
dear all,during development with the drv8825 we've faced how hard it is to solder an HTSSOP without reflow or hot air. so, one of my students had an idea to connect the heatsink to the PCB with regular...
View ArticleDRV8432 bootstrap capacitor
We are using the DRV8432 as a galvanometer driver (parallel mode).The boostrap capacitors having 1µF each without the recommended 5Ohm resistor in the GVDD_x rail. Could that damage the internal...
View ArticleDRV8412 in parallel full-bridge mode and problem with reset signals
I use two DRV8412 motor drivers in parallel full-bridge mode to drive brushed DC-motors. I use one DRV8412 (one half bridge in parallel full-bridge mode, AB) and another DRV8412 (also one half bridge...
View ArticleDRV8412 C2 Kit - Help regarding .c code
Hi,I aim to make a high precision 3D positioning system using three 4-wire stepper motors. I am using DRV8412 C2 kit for the system. I have the following questions in this regard -1. Is it possible to...
View ArticleDRV8829 VCP resistor
Hi! I am currently designing a motor driver using DRV8829's for microstepping a NEMA34 and a NEMA23 motor.. I was checking out the PCB designs provided in the application notes as well as the one for...
View ArticleDRV8312 PWM duty ratio not increase.
I'm using DRV8301-69M-KITwith our high speed motor.When I tried to increase motor speed from 40000rpm to 50000rpm, acceleration stopped at 47000rpm. It was impossible to reach to 50000rpm.(I already...
View ArticleDRV8711Evaluation Module - included stepper motor
Hi, I have ordered a DRV8711 evaluation module. Can someone please provide me with a specification of the 'included stepper motor'?
View ArticleHow to implement the M/T method for the rotor speed calculation
Hello,We know there are three methods to calculate the rotor speed: M method, T method and the M/T method, but m/t method can provide much wider speed estimation range than both M method and T...
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