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L9362

Reset

There are two different reset functions realized:

Undervoltage reset

As long as the voltage of Vcc is lower than Vccmin, the powerstages are switched off, the failure register

is reset and the SDO output remains tristate.

External reset

As long as the NRES pin is low following circuits are reset:

Powerstages

Failure register

and the SDO output is tristate.

Undervoltage protection

At Vcc below Vccmin the device remains switched off even if there is a voltage ramp at the OUT pin.

Figure 11. Application Circuit

VCC

ROL

Reset

Reset

Reset

≥1

Under

voltage

RESET

VCC

99AT0011

S

R

=

=

Driver

Trigger

dV/dt

Control

Overtemp.

I_SCB Filter

t_SCB

NON1

=

=

I_OL Filter

t_OL

NON1

=

SCG Filter

t_SCG

NON1

Failure

Register

(FR)

Shift

Register

FR

RESET

=

VCC

IRES

=

VCC

=

VCC

RESET

=

Oscillator

OSC

CFB1

CFB2

CFB3

CFB4

VCC

ADC

PGND4

PGND3

PGND2

PGND1

OUT4

OUT3

(optional

for all

channels)

OUT2

OUT1

C1

C2

C3

C4

VCC

C2

VCC

C1

NON1

=

VCC

NON2

NON3

NON4

μC

SDI

CLK

NSC

SDO

IRES

VS

NRES

SGND

LGND