BTS721L1 Просмотр технического описания (PDF) - Infineon Technologies

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BTS721L1

Smart Four Channel Highside Power Switch

Infineon Technologies 

Open-load detection, OUT1...4

ON-state diagnostic condition:

VON < RON·IL(OL); IN high

+ Vbb

ON

Logic

unit

Open load

detection

VON

OUT

OFF-state diagnostic condition:

VOUT > 3 V typ.; IN low

OFF

Logic

unit

Open load

detection

REXT

V OUT

RO

Signal GND

GND disconnect

(channel 1/2 or 3/4)

Vbb

Ibb

IN1

Vbb

OUT1

IN2 PROFET

OUT2

ST

GND

VIN1VIN2

V

ST

V

GND

BTS721L1

GND disconnect with GND pull up

(channel 1/2 or 3/4)

IN1

VIN1

IN2

VIN2

ST

Vbb

PROFET

OUT1

GND

OUT2

Vbb

VST

VGND

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

IN1

Vbb

high

OUT1

IN2 PROFET

OUT2

ST

GND

Vbb

For an inductive load current up to the limit defined by EAS

(max. ratings see page 3 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 the whole load

current flows through the GND connection.

Any kind of load. In case of IN = high is VOUT ≈ VIN - VIN(T+).

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

Semiconductor Group

9

2003-Oct-01

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