Part Number: DRV8811 dear
My customer fihd that DRV8811 drive motor appear speed too fast, phenomenon just show below picture
note: 频率 means frequency
It appears sometimes ，about probability of 1/15
AOU1 AOUT2 BOUT1 BOUT2 wave shows as above…
Part Number: DRV8811 Hi team, The Rx/Cx added in recommended operating conditions when the datasheet has been modified with revJ. What's wrong with using values outside this range? My customer used Rx=8.2kΩ, Cx=2200pF. Sincerely. Kengo.
Part Number: DRV8811 Hi team,
The customer's board was USMx pin was pull-up at 10K ohm, but the system was malfunction. The issue was improved when the resistance was changed to 1K ohm
My customer is asking below.
1. The measurement waveform at…
Part Number: DRV8818
Hello,
We have problem with a DRV8818 stopping randomly sometimes, it can work perfectly some hours, but sometimes we see the steeper motor stopped, when we check the outputs they seems all disconnect (AOUT1 , AOUT2 in high impedance…
Rick,
I know that it has been awhile, but the customer has built another board and I have attached a summary of their findings.
DRV8811 Issue With Microstepping.docx
They still seem to be having issues with their board. Please let me know if you…
Part Number: DRV8811 Other Parts Discussed in Thread: DRV8818
In 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 work properly…
Part Number: DRV8811
Hello, as visible in the scope shot above- my team is having an issue with a 1V p2p, 75Khz oscillation on the input Vref pin.
We installed the 0.1uF as directed in the datasheet
The voltage is coming from an…
Part Number: DRV8811 Hi all Would you mind if we ask DRV8811? How much is the current at Decay input pin? It seems that this pin is High-Z. Kind regards, Hirotaka Matsumoto
Part Number: DRV8811 Hi team,
The customer try the thermal calculation, the reference is "Calculating Motor Driver Power Dissipation (SLVA504)" in datasheet. The section 1.2 Switching Losses is required tR and tF for PSW_RISE and PSW_FALL.
Could…
Part Number: DRV8811 Hi all Would you mind if we ask DRV8811? Is there the power sequence between VM and VCC? Is it possible to use this device following conditions?
<The condition> -VCC=ON -VM=OFF -Logic signal ENABLEn,RESETn,USM0,USM1 and DECAY are…
