BTS726L1 Просмотр технического описания (PDF) - Infineon Technologies

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производитель

BTS726L1

Smart Two Channel Highside Power Switch

Infineon Technologies 

BTS 726 L1

Timing diagrams

Both channels are symmetric and consequently the diagrams are valid for channel 1 and

channel 2

Figure 1a: Vbb turn on:

IN1

Figure 2b: Switching an inductive load

IN

IN2

V bb

V

OUT1

t

ST

d(ST)

*)

V

OUT

V

OUT2

ST open drain

Figure 2a: Switching a lamp:

IN

IL

I L(OL)

t

t

*) if the time constant of load is too large, open-load-status may

occur

Figure 3a: Turn on into short circuit:

shut down by overtemperature, restart by cooling

IN1 other channel: normal operation

ST

V

OUT

I

L1

I L(SCp)

I L(SCr)

I

L

t

The initial peak current should be limited by the lamp and not by

the initial short circuit current IL(SCp) = 25 A typ. of the device.

t off(SC)

ST

t

Heating up of the chip may require several milliseconds, depending

on external conditions (toff(SC) vs. Tj,start see page 11)

Semiconductor Group

12

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