Hello Darshan,
The current sense gain error from -25A to +25A is specified to +/-0.75%. So the variation in gain for <1A will still remain within specification. Also please note that this plot has calibrated out offset error.
This variation in gain…
Thanks Liu, I will work on testing this in the next day or two. I am out of office a few days this week so please expect a delay.
How are you testing that the buffer sharing from DMA-buf is being done correctly without using GStreamer?
BR, Sarabesh S. …
Hello Niklas,
thanks for your feedback. First I will answer your question:
- Is the device set to DEM or FPWM mode? -> FPWM (MODE via 10k pulled to VCC) - The LM5122 HO signal is measured with reference to GND, so it mostly shows the SW, correct? -…
Yes, the FB resistor network is not 100% to 3.3V. The ambient temperature is controlled at 23 celsius degree.
Reading the datashet it says the voltage drop at 1A, VIN >= 3.0V with Iout = 1A, the drop typ is 0.8mV to 1.4V. This information is in page 6…
Hi Tapajit,
Can you check if your FB resistor values are correct?
Try adding a 2A load to output and allow for your input current to be at least 1A so it doesn't get limited.
Your schematic looks okay.
Regards,
Rahil
Hello Darshan,
The variation in gain for <1A will still remain within specification. Also please note that this plot has calibrated out offset error.
This variation in gain error is really just a variation in linearity. However, this change in linearity…
Hi Andreas,
Thank you for your feedback, but we still don’t understand why the value we measured is so different from the value indicated in the specification (more than 25%). Can you please explain more?
We understand that there will be a certain…
thank you.
The capacitance of the piezo is 28nF, and I want to drive it at 100V to 120V (±60V). I said the frequency is 40kHz, but I hope it will run up to 70kHz, and the frequency is high, so I need to supply more than 1A of current.
Part Number: INA186 Other Parts Discussed in Thread: INA230 , INA169 Tool/software: Hello TI Team,
We are planning to use INA186 amplifier for current measurement of -24VDC@1A supply.
As per the attached datasheet reference image, INA186 is used for the…
