Figure 35. Connection for input overvoltage protection (iso/non-iso topologies)

C1

Cs

GND

DRAIN

GND

VCC

UVP

COMP

CONTROL

FB

VIPER31

RH

DIN

RL

~ AC

OVP

CIN

from VAUX or VOUT

C2

R2

Figure 36. Connection for output overvoltage protection (non-iso topologies)

C1

Cs

DOUT

GND

RH

RL

Rfb2

Rfb1

DRAIN

GND

VCC

UVP

COMP

CONTROL

FB

VIPER31

OVP

COUT

VOUT

from VAUX or VOUT

C2

R2

4.14

Undervoltage and overvoltage protection

If both undervoltage and overvoltage protections are required, they can be set independently from each other

through a single voltage divider, as illustrated in the figure below.

VIPER31

General description

DS13285 - Rev 6

page 23/39