Data Sheet

8

Rev. 1.0, 2014-02-25

TLE9201SG

Block Description

4.3

Output Stages

The output stages consist of four n-channel mosfets in H-bridge configuration. The outputs are protected against

short circuits and over temperature.

The bridge is controlled using the inputs PWM and DIR. The signal at DIR is defining the direction of the driven

DC motor whereas the PWM signal sets the duty cycle.

The outputs can be set tristate (i.e. high side and low side switches are turned off) by setting DIS to high level.

Figure 4-2 Operation Modes

Table 4-1

Output Truth Table

DIS

PWM

DIR

OUT1

OUT2

Comment

1

X

X

Z

Z

disabled, outputs tristate

0

1

1

H

L

forward / clockwise

0

1

0

L

H

reverse / counterclockwise

0

0

1

H

Z

freewheeling in HS (forward)

0

0

0

Z

H

freewheeling in HS (reverse)

HS1

ON

M

LS1

OFF

HS2

OFF

LS2

ON

DIR=1, PWM=1

Forward

HS1

OFF

M

LS1

ON

HS2

ON

LS2

OFF

DIR=0, PWM=1

Reverse

I

L

HS1

ON

LS1

OFF

DIR=1, PWM=0

Freewheeling Through HS 2

Body Diode (Forward)

M

HS2

OFF

LS2

OFF

DIR=0, PWM=0

Freewheeling Through HS 1

Body Diode (Reverse)

HS1

OFF

M

LS1

OFF

HS2

ON

LS2

OFF