Dear, Sir.
My customer is considering to measure DC+/- 400 ~ 600A.
It looks possible to refer TIPD205 appying DRV425.
Could you please tech us several things because we are not familiar with the product.
1. DRV425 Fluxgate.
a) I have a chance to see the principle of Fluxgatre, before.
It was configured with Excitation, Sensing, Compensation coils & 2 magnetic core
(Non-Inveting, Inverting).
I wonder DRV425 is integrated the Exciation portion inside the ic?
2. TIPD205.
It is mounted 2 pcs of DRV425 to measure the absolute position, and show as Voffset.
b) I wonder the influence of geomagnetic & adjacent fiild will be observed on Voffset?
c) I wonder DRV425 is just measured above, So won(t do automatic correction, it will be
implemented by external MCU to capture the signal through ADC?
d) Is it possible to realize +/- 100A DC current sense using just 1 DRV425?
If yes, Please let us know the bottle-neck to realize that(for instance, accuracy got
worse than the case of 2 pcs DRV425 because the current unbalance on rght/left side
of hole could not be involved, etc)
Best Regards,
H. Sakai
