IRS20954S

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11

Self Reset Protection

VB

VDD

IN

CSD

VSS

COM

OCSET

LO

VCC

HO

VS

DT

CSH

NC

NC

VREF

Ct

Figure 8: Self-Reset Protection Configuration

Designing Ct

CSD

DD

PR

I

V

Ct

t

⋅

⋅

= 1

.

1

[sec]

or

DD

CSD

PR

V

I

t

Ct

⋅

⋅

=

1

.

1

[F]

shutdown release, is given as:

CSD

DD

SU

I

V

Ct

t

⋅

⋅

= 7

.

0

[sec]

or

DD

CSD

SU

V

I

t

Ct

⋅

⋅

=

7

.

0

[F]

the repetitive sequences of shutdown and resume when the load is in continuous short circuit. In most of

Shutdown Input

shutdown mode. The operation resumes when the voltage of CSD pin comes back and cross the upper threshold of

CSD, Vth1, by its charging process.