Introduction

The DHABfamily is best suited for DC, AC or pulse current measurement  in high power and low voltage automotive

Principle of the DHAB Family

The open loop transducers  use an Hall effect IC. The magnetic induction B, contributing to the rise of the Hall voltage, is generated

applications.  It’s contains a galvanic isolation between the

by the primary current I

to be measured.

primary circuit (high power) and the secondary circuit

(electronic  circuit).

The control current I

or generator (Fig. 1).

is supplied by a current source i.e. battery

The DHABfamily has a dual current range. It gives you the choice of having different peak currents (from

+/- 20A up to +/- 600A) in the same housing.

Features

Open loop transducer using the Hall effect sensor

Low voltage application

Unipolar +5VDC power supply

Primary current measuring range up to ± 100A for range 1

W ithin the linear region of the hysteresis cycle, B is proportional to :

(B) = constant (a) x I

The Hall voltage is thus expressed by :

= (K/d) x I x constant (a) x I

Except for I , all terms of this equation are constant.

and +/- 600A for range 2

Maximum  r.m.s primary admissible  current:   defined by primary cable to have T° < +150°C

Operating temperature range :  - 40°C < T° <  +125°C

Therefore:

= constant (b) x I

Output  voltage:

The measurement  signal V

amplified to supply the user output

fully ratio-metric  (gain and offset)

2 measuring ranges to have a better accuracy.

 Advantages

Good accuracy for high and low current range

Good  linearity

Low thermal offset drift Low thermal gain drift Hermetic  package.

Automotive applications

Battery Pack Monitoring

Hybrid  Vehicles

EV and Utility Vehicles.

voltage or current.