Part Number: DRV421 Hello,
I'm trying to develop a current transducer using the DRV421, both for current measurement and for Residual current detection.
The specification are about 50A for maximum current and around 10 mA of residual current with…
Hello Mattia,
The best thing is to place the DRV421 at the center of the air gap for starters. Just like the image above you want the field to be highest at the center of the DRV421 as that is where the sensor is located. Making the air gap small will…
Part Number: DRV421 Dears,
I have an application and I need to use DRV421 to measure DC current, the max DC current to be measured is 400A.
Can the DRV421 measure 400A?
If it can measure 400A what is the number of windings of the compensation coil? Also…
Part Number: DRV421
Hi Team,
A customer is using for his design,
He is aware of the implementation of US2016202294A1.
US2016202294A1.pdf Customers want to know if the current sensor is designed with DRV421, it can be commercialized, Is there any patent…
Hello Roberto,
You could as this stability issue and in the core or not it still sees the inductance in the loop. As the compensation drive attempts compensate the impedance that is sees is what causes the pole as seen in the "Designing with the DRV421…
Hello Balaji,
Here is my reply from the previous questions. Thanks for being patient. I will look at your confidential material you sent through email.
1]
There are capacitors that have non-magnetic materials. These are the ones that should be used. Please…
Hello Manu,
I would almost say that this is difficult to do this with the DRV421 for a few issues. The core design is a challenge and also limited by the DRV421 as you can only get so close to the compensation core air gap. https://e2e.ti.com/support…
Hi Anthony,
Thank you for your post.
The main difference between the DRV425 and the DRV421 is that the DRV425 has the fluxgate sensor and compensation coil integrated into the device. Therefore there is no need for the external compensation coil and magnetic…
Part Number: DRV421 Other Parts Discussed in Thread: DRV401 1, what is the difference between DRV421 and DRV401 in application? Is the current range that the two can detect the same? The circuit designed by our existing DRV401 can detect 1A. If the detection…