Q67060-S7403-A2 datasheet(9/13 Pages) INFINEON

Part #	Q67060-S7403-A2

Description	Smart High-Side Power Switch One Channel: 60m??Status Feedback

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Manufacturer	INFINEON [Infineon Technologies AG]

Direct Link	http://www.infineon.com

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9 / 13 page

BTS428L2

Infineon Technologies AG

Page 9

2003-Oct-01

GND disconnect with GND pull up

PROFET

V

IN

ST

OUT

GND

bb

V

bb

1

2

4

3

5

V

GND

V

IN

V

ST

Any kind of load. If VGND > VIN - VIN(T+) device stays off

Due to VGND >0, no VST = low signal available.

Vbb disconnect with energized inductive

load

PROFET

V

IN

ST

OUT

GND

bb

V

bb

1

2

4

3

5

high

For inductive load currents up to the limits defined by ZL

(max. ratings and diagram on page 9) 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

EAS

bb

L

R

ELoad

L

RL

{

Z L

Energy stored in load inductance:

EL = 1/2·L·I

2

L

While demagnetizing load inductance, the energy

dissipated in PROFET is

EAS= Ebb + EL - ER= VON(CL)·iL(t) dt,

with an approximate solution for RL > 0 Ω:

EAS=

IL·L

2·RL

·

(Vbb + |VOUT(CL)|)· ln (1+

IL·RL

|VOUT(CL)| )

Maximum allowable load inductance for

a single switch off

L = f (IL ); Tj,start = 150°C,TC = 150°C const.,

Vbb = 12 V, RL = 0 Ω

ZL [mH]

0.1

1

10

100

1000

27

12

17

IL [A]

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