RE: DRV8301: RT_CLK Timing Resistor Value for Built-in Buck Regulator
Thanks, John; that was my impression as well. Unfortunately, as all of us know, when it comes to engineering, the simple solution isn’t always simple. In this case, the customer apparently can’t...
View ArticleRE: DRV595: Getting very hot
Hello! Thanks for the feedback. Shawn will take a look at this and get back to you.
View ArticleRE: DRV8701: Operating DRV8701 and H-Bridge on Separate Supplies
Hi Holger,If VM remains at 24V then this would be a case 3 scenario. I can see how the figure creates confusion stating "allowable" and showing VM only up to 14 V when in reality VM can go up to 45V as...
View ArticleRE: DRV8701: Operating DRV8701 and H-Bridge on Separate Supplies
Thank you for your help Luis. I very much look forward to use this driver IC in our project.
View ArticleDRV8701: Operating DRV8701 and H-Bridge on Separate Supplies
Part Number: DRV8701Hey there,i would like to use the DRV8701 for a commercial project. I have a question regarding the datasheet chapter '7.4.1 Operating DRV8701 and H-Bridge on Separate Supplies -...
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RE: DRV8307: DRV8307 to change direction, the Motor speed is different ?
Hello,Rick & Prashant :Thanks your suggestion, I fix the glitches on the phase of Hail Sensor.I use the single ended mode on DRV8307, The HU- & HV- & HW- pin are connected to a resistance...
View ArticleRE: DRV595: Getting very hot
Hi Abdul, Could you please confirm the maximum output current is 1.1A? If it's, it's far from the over-current threshold, and the FAULT can't be a over-current FAULT. Is the power supply stable at 7V?...
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RE: DRV8307: DRV8307 to change direction, the Motor speed is different ?
Hi Jossun,It looks like there is hall misalignment in your motor. Because Ideally each hall signal will be high for 180 degree and low for 180 degree and three are three hall signals. So if you combine...
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DRV8307: DRV8307 to change direction, the Motor speed is different ?
Part Number: DRV8307Hello ! everyone, I have some problem of DRV8307 According the DRV8307 EVM Schematic, I design the circuit to drive the BLDC Motor, like the picture below:I use msp430g2553 I/O pin...
View ArticleRE: DRV595: Getting very hot
Hi Shawn,I can confirm that the voltage Is 7V and the current is no more than 1.1A. I attach the schematic and some waveforms on the relevant pins when the fault occurs. Please take a...
View ArticleRE: DRV595: Getting very hot
Hi Abdul, Please try 400kHz PWM switching frequency, see if the FAULT still occurs. Let me know if it works. Best regards, Shawn Zheng
View ArticleRE: DRV595: Getting very hot
Hi Shawn, I have just tried that with no luck. I am now thinking this may be a cause and effect. I am measuring the IN+ pin. On this pin the signal is a PWM filtered by a LP filter which is made up of...
View ArticleRE: DRV595: Getting very hot
Hi Abdul, It's not expected that the input voltage jumps from 200mV 400mV. I think you can try with a lower value capacitor on INP and set DC bias voltage on INN pin to 3V.
View ArticleDRV595: Getting very hot
Part Number: DRV595I am using the DRV595 to drive a 7V, 1A TEC and I have an overheating issue on a new project. The conditions are: Power supply voltage of 7VAmbient is 25CMax TEC current is 1.1A...
View ArticleRE: DRV595: Getting very hot
Hi Shawn, I have removed the capacitor and resistor and grounded the INP. The output is now hard on and driving my TEC down. But again it is resetting. The reset is occurring approximately every...
View ArticleRE: DRV8811: Issue with DRV8811
Hi Luis. I was interested in this comment.. We could not track devices with 54TC marking. Counterfeit of part is very unlikely but a possibility since no records are shown. We will be able to determine...
View ArticleDRV8811: Issue with DRV8811
Part Number: DRV8811In one of our products we use DRV8811 chips to control stepper motors. We faced some issue with these chips in the past, where the driver "locked up" and motor movement ceased to...
View ArticleRE: DRV595: Getting very hot
Hi Shawn, To verify that the TEC is not shorting and hence casing the problem, I replaced the TEC with a power resistor, drawing about 0.7A. The same problem remains. In all the testing done so far, I...
View ArticleRE: DRV8800: Resistor sizing
Hi Diego, It is the correct way, although the power is .75W. It appears the I was not squared above.
View ArticleRE: CCS/DRV8305: ESC gets very hot with one motor, but works great with another
Hi Roman, Do you have a current probe? What is the current in the motor phases? The link to the motor is not working. Can you re-send the link or provide the motor specifications?
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