TPD1044F

2007-10-02

3

Timing chart

Note 2:The overtemperature detector circuits feature hysteresis. After overtemperature is detected, normal operation

is restored only when the channel temperature falls by the hysteresis amount (5°C typ.) in relation to the

overtemperature detection temperature.

Truth table

IN

Output state

Operating state

L

H

OFF

H

L

ON

Normal

L

H

OFF

H

H

current limiting(limiter)

Overcurrent

(load short)

L

H

OFF

H

H

OFF

Overtemperature

Input signal

Overcurrent

detection

Channel temperature

Drain-source

voltage

Drain current

Current limiting

(limiter)

Thermal

shutdown

Active clamp

Normal

Overtemperature

detection

Inductive load