TLE5204G Siemens Semiconductor Group, TLE5204G Datasheet - Page 3

• Manufacturer Part Number: TLE5204G
• Description: 3-A DC Motor Driver
• Manufacturer: Siemens Semiconductor Group

Circuit Description
Input Circuit
The control inputs consist of TTL/CMOS-compatible Schmitt triggers with hysteresis.
Buffer amplifiers are driven by these stages and convert the logic signal into the
necessary form for driving the power output stages.
Output Stages
The output stages form a switched H-bridge. Protective circuits make the outputs short-
circuit proof to ground and to the supply voltage throughout the operating range. Positive
and negative voltage spikes, which occur when switching inductive loads, are clamped
by integrated power diodes.
Functional Truth Table
E1
L
L
H
H
Notes for Output Stage
Symbol
L
H
Semiconductor Group
E2
L
H
L
H
Q1
L
L
H
H
Value
Low side transistor is turned-ON
High side transistor is turned-OFF
High side transistor is turned-ON
Low side transistor is turned-OFF
Q2
L
H
L
H
Comments
Motor brake; both low side transistors turned-ON
Motor turns clockwise
Motor turns counterclockwise
Motor brake; both high side transistors turned-ON
3
TLE 5204
1998-02-01