How to Bypass DRV8307 Rotor Lock Detection
We are building a product that requires bypassing the DRV3807's rotor lock detection. The datasheet does not mention a way to do this, nor does it describe the rotor lock detection criteria well enough...
View ArticleDRV8838 EN pin question
HelloI have question about EN pin of DRV8838, I break(stop) DC motor by using push bottom switch( see diagram as attached)and control direction (forward and reverse) by MCU. When EN pin low and PH...
View Article[DRV8711] high-frequency noise, not spinning
Hi,I had built a PCB based on OPBS breakout board ( available at GitHub- link ), the only difference is that i replaced each CSD88537ND for two IRFZ44n. My actual setup is based on an Arduino board,...
View ArticleDRV8818 question about external capacitor
Hello,Our customer use the DRV8818.The customer place the capacitor at VGD-GND and have question.a) How much the voltage ratings?In the EVM, the capacitor rated for 50V. b) How much the current through...
View ArticleDRV11873 series resistor (between motor phase pin and actual motor winding)...
Team,in order to reduce the inrush current at start-up, it's been added a series resistance between motor phase pin and actual motor winding terminal. Does it have any impact on the control of the...
View ArticleDRV8307 chip blowing up
I have built a couple hundred board and once in a while I have a chip smoke and not sure what is causing it. and it happens after its been running for a while.it looks to be by the power sense pin. has...
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DRV 8307 GATE Current capacity
I found that in the data sheet of DRV8307, It is written that 'DRV8307 is a three half- bridge pre-driver that drives six N-type MOSFETs 30 mA with a single power supply.' While in this linked...
View ArticleDRV8830 / how to use fault low signal
Hi all.I would like to know about fault function.my customer uses this device in the following, ・The motor load(current) enlarge when motor spins constant amount.・Then the fault pin becomes Low,...
View ArticleTPIC2050 Laser and Motor Drive Circuit Questions
1. Can I write data with this LDD Driver Part?2. Is the Motor drive transconductance mode? In other words, does the 12 bit DAC control represent tracking (or focus) coil current (mA) or coil voltage...
View ArticleDRV8432 unused output port shorted to PVDD internally
Hi,I am currently applying DRV8432 to drive a 3 phase BLDC motor. Thus I am only using half bridge A, B and C and left half bridge D floating at the output.But recently I found a damage board where...
View ArticleDRV8801 voltage range
Dear team,According to DRV8801 spec, minimal operational voltage (VBB) is 8V, while UVLO mechanism threshold range is 6.5V to 7.5V.We would like to power DRV8801’s VBB from voltage source in range of...
View ArticleDRV8308 Clock frequency mode
I can drive my BLDC motor from my own board which has a DRV8308 using Register mode. I have recently tried to get it to work using Clock Frequency Mode but the motor does not run, it occasionally...
View ArticleDRV3201 Gate discharge current
Hello, Please answer following question from customer. Customer is using 8400pF gate capacitance FET and adding gate resister between GHSx/GLSx and FET gate.Gate discharge current is programed...
View Articledrv595 total drive power?
If my TEC/motor/other Load.. is 6A, that use drv595 appropriate it?DRV595 driving voltage output is fixed or variable or programmable's?
View ArticleBOOSTXL-DRV8301 current sense amplifier does not work
Hi, I'm trying to run a BOOSTXL-DRV8301 on a LaunchXL-F28069M. The software is running fine (so far) but the amplified current signal coming from the BoostXL is too weak. I tried to set the GAIN to...
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DRV8870 Rise and Fall times.
I have a customer considering the DRV8870. Their question can be found below. I appreciate your assistance. The DRV8870 data sheet Figure 6 (See attached) calls out the Propagation Delay as 700 ns...
View ArticleDRV92250
Hi,DRV92250 is active part ? i unable to get info from web. if it discontinued part , please suggest alternate for DRV92250.RegardsMuthukumar
View ArticleDRV8842 Braking Logic INx
Hi,DRV8842 value of INx for applying a breakDRV8870, when set at the same time "H, H" the IN1 and IN2 to the braking operation.In order to the brake operation is DRV8842, IN1 and IN2 is should I enter...
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DRV110 RS
Hi Sir,The customer has an issue about DRV110.The customer wants to calculate Rs.And there is a Equation 5 in the data sheet.Q1: What is IGate,AVE for Equation 5? How to determine the value of...
View ArticleDRV8305 Ringing
Please advise on the customer feedback and questions below: We are using the DRV8305 FET driver and are having some issues with it. Here is a summary of what we are seeing on the TI DRV8305 part.If we...
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