TLE5205-2_07 Datasheet, PDF (5/25 Pages) Infineon Technologies AG – 5-A H-Bridge for DC-Motor Applications

TLE 5205-2
Overview
1.5 Circuit Description
Input Circuit
The control inputs consist of TTL/CMOS-compatible schmitt-triggers with hysteresis.
Buffer amplifiers are driven by this stages.
Output Stages
The output stages consist of a DMOS H-bridge. Integrated circuits protect the outputs
against short-circuit to ground and to the supply voltage. Positive and negative voltage
spikes, which occur when switching inductive loads, are limited by integrated
freewheeling diodes.
A monitoring circuit for each output transistor detects whether the particular transitor is
active and in this case prevents the corresponding source transistor (sink transistor) from
conducting in sink operation (source operation). Therefore no crossover currents can
occur.
1.6 Input Logic Truth Table
Functional Truth Table
IN1
IN2 OUT1
L
L
H
L
H
L
H
L
L
H
H
Z
OUT2
L
H
L
Z
Comments
Motor turns clockwise
Motor turns counterclockwise
Brake; both low side transistors turned-ON
Open circuit detection
Notes for Output Stage
Symbol
Value
L
Low side transistor is turned-ON
High side transistor is turned-OFF
H
High side transistor is turned-ON
Low side transistor is turned-OFF
Z
High side transistor is turned-OFF
Low side transistor is turned-OFF
Data Sheet
5
Rev. 1.1, 2007-07-31