L6376

Demagnetization of inductive loads

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Demagnetization of inductive loads

The device has four internal clamping diodes able to demagnetize inductive loads.

The limitation is the peak power dissipation of the packages, so — if the loads are big or if

there is the possibility to demagnetize more loads contemporarly — it is necessary to use

external demagnetization circuits.

In Figure 7 and Figure 8 are shown two topologies for the demagnetization versus ground

Figure 6.

Input comparator hysteresis

Figure 7.

External demagnetization circuit (versus ground)

Vi

Vs

Vout

100mV

D94IN131

1.25V

100mV

DRIVER

VCP

VS

OVC

O4

O3

O2

O1

D94IN109

RS

SHORT CIRCUIT

CONTROL

UV

CURRENT

LIMIT