Part Number: DRV8811 Other Parts Discussed in Thread: DRV8880
Hello,
Above is a shot of the issue with my motor driver.
It is a snapshot of two current probes across a coil. Using an FFT sound analyzer on my phone, I hear 850Hz which matches what…
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…
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 AD5308.
When…
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 USMx…
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 have…
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.
…
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 pull…
Part Number: DRV8811DRV8811 occur out of step below condition.
If there any measure, please let me know.
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【Condition】
・VM: 24V, Iout: 388mA_rms
・Vcc: 3.3V, Vref: 622mV
・Microstep: 1/4
・Rsense: 0.2Ω(Ichop: 418mA)
・Decay: Mixed…
