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Part Number: DRV8251AEVM Tool/software: As dispicted in DRV8251AEVM user guide, Pot1 controls the PWM signal that goes into IN1, by turning it clockwise you increase the duty cycle from 0% to 100%. But when I use this evaluation board to drive a motor…
Part Number: DRV8251AEVM Other Parts Discussed in Thread: DRV8251A Hi,
We are testing the DRV8251A on a brushed DC motor (24V 4A). The development board has two potentiometer to set the motor speed in both directions.
Our problem is; the motor is turning…
Part Number: DRV8251AEVM Other Parts Discussed in Thread: MSP430F2618 , MSP430FR5969 , , MSP430FR2100 , MSP430F2617 I am trying to program the DRV eval board using a MSP430FR5969 LaunchPad and CCS with the downloaded firmware for the DRV eval board (slvc831…
Part Number: DRV8251AEVM Other Parts Discussed in Thread: DRV8251A Can you provide the following information for DRV8251AEVM
1) Schematic
2) Calculation for VSense. It is not clear what Rsense is on the eval board,
3) Itrip value for the board as shi…
Hello Saad,
It sounds like you have the DRV8251EVM because of its 150m Ω sense resistor (R7), the DRV8251AEVM has a 0Ω sense resistor (R7).
Current regulation on the DRV8251 should have a latched disabled response for overcurrent protection,…
Hi Tomek,
We don't have a specific FMEA for this device. However, my suggestion would be to order the DRV8215AEVM and test for yourself.
DRV8251AEVM Evaluation board | TI.com
Best,
David
Hey David (Thomas), apologies for the delay.
Thank you for the detailed testing and writeup! Very thorough. I agree with you that it will work perfectly.
Regarding the slight increase in RDSon during the tests - our datasheets have plots of RDSon vs Voltage…
Hi Jagdish,
From a design perspective the schematic seems ok.
As long as the DRV8251A is operated within recommended specifications, it will be fine.
As I mentioned earlier I would suggest simulating or testing the layout first with the DRV8251AEVM to…
Hey Todd,
Apologies busy day, haven't had time to dig into the DRV104 datasheet for this yet.
So for a 24V / 2A peak / 1A continuous motor driver, I would recommend DRV8231A . It's a 35-V, 3.7-A H-bridge motor driver with integrated current regulation…
Dharmesh Joshi said: We aim to place about 8 of them on a different PCB design, so ideally, we would like to control them all with a common Signal + Enb for each device.
Hmmm potentially you could use a digital signal for VREF and set it LOW/HIGH (0V …
