Rev. P05

14

VPN12AD02-FU

Output Protection:

The VFB pin measures the VOUT to detect the protection of short to ground, open load and

output overvoltage. The Fault pins of EF1 and EF2 diagnostic truth table are as following.

FIG.31 VFB Protection Pin

Fault Condition

EF1

EF2

Gate Driver

IVCC

No Fault occur

H

H

Switching

Active

Output over voltage

H

L

L

Active

Output short circuit

L

H

L

Active

Over temperature

L

L

L

Shutdown

FIG.32 Diagnostic Truth Table

Overvoltage Protection:

. (

)

Short Circuit Protection:

(

)

.