PROFET® ITS 716G

Infineon Technologies AG

10 of 14

2006-Mar-23

GND disconnect with GND pull up

PROFET

V

IN

ST

OUT

GND

bb

V

bb

V

GND

V

IN

V

ST

load

PROFET

V

IN

ST

OUT

GND

bb

V

bb

high

(max. ratings and diagram on page 10) each switch is

protected against loss of Vbb.

Consider at your PCB layout that in the case of Vbb dis-

connection with energized inductive load all the load current

flows through the GND connection.

Inductive load switch-off energy

dissipation

PROFET

V

IN

ST

OUT

GND

bb

=

E

E

E

EAS

bb

L

R

ELoad

RL

L

{

L

Z

Energy stored in load inductance:

2

L

While demagnetizing load inductance, the energy

dissipated in PROFET is

with an approximate solution for RL > 0 Ω:

(

Maximum allowable load inductance for

L = f (IL ); Tj,start = 150°C, Vbb = 12 V, RL = 0 Ω

ZL [mH]

1

10

100

1000

12

34

5

6

IL [A]