VIPER28

Operation descriptions

Doc ID 15028 Rev 5

19/32

Where:

●

●

●

●

●

●

●

Equation 4

The resistor values will be such that the current sourced and sunk by the CONT pin be

within the rated capability of the internal clamp.

Figure 22.

OVP timing diagram

R

OVP

R

LIM

1k

OVP

–

k

OVP

-----------------------

×

=

t

VAUX

t

t

t

STROBE

t

COUNTER

RESET

t

COUNTER

STATUS

t

0

VCONT

T

STROBE

OVP

FAULT

0

0

0

0

→11 →22 →0

0

→11 →22 →3

3

→4

0

E

R

U

L

I

A

F

P

O

O

L

K

C

A

B

D

E

E

F

E

C

N

A

B

R

U

T

S

I

D

Y

R

A

R

O

P

M

E

T

N

O

I

T

A

R

E

P

O

L

A

M

R

O

N

t

V

OVP

t

t

t

STROBE

t

COUNTER

RESET

t

COUNTER

STATUS

t

0

OVP

FAULT

0

0

0

0

→11 →22 →0

0

→11 →22 →3

3

→4

0

E

R

U

L

I

A

F

P

O

O

L

K

C

A

B

D

E

E

F

E

C

N

A

B

R

U

T

S

I

D

Y

R

A

R

O

P

M

E

T

N

O

I

T

A

R

E

P

O

L

A

M

R

O

N

t

Sampling time