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Part Number: INA240
I plan use TI device implement CSM & protection function. Could provide your suggestion for me? thanks.
Accuracy 5% - 10% @Light load 500mA
Accuracy 2% - 5% @Heavy load 45A (peak load transient 75A)
Bus Voltage 4.5VDC - 7VDC
1. Looks INA240 with shunt resistor 1m ohm have good performance. Am I right?
2. In my system, current is dynamic load since we have PWM control LED panel. so input current behavior is not average.
we need RMS converter DC out for MCU implement protect. such as ADI device AD8436 & AD637 has RMS to DC function.
Jason Bridgmon, TI Sensing Products Applications Support
Current Shunt Monitor Video Training Series
TI makes no warranties and assumes no liability for applications assistance or customer product design. You are fully responsible for all design decisions and engineering with regard to your products, including decisions relating to application of TI products. By providing technical information, TI does not intend to offer or provide engineering services or advice concerning your designs.
In reply to Jason Bridgmon:
In reply to Wen Yung:
Thank you for the information. I'm a little unclear about the PWM though - you said it operates at up to 16MHz, but then said it has a cycle of <26uS, which is just around 38kHz. 38kHz is well within the bandwidth of the INA240, but 16MHz is too fast. Could you help me understand?
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