TLE5203 Datasheet, PDF (3/18 Pages) Siemens Semiconductor Group – 3-A DC Motor Driver

TLE 5203
Pin Definitions and Functions
Pin No.
1
2
3
4
5
6
7
Symbol
Q1
EF
I1
GND
I2
V_S
Q2
Function
Output of channel 1; Short-circuit proof, free-wheeling
diodes integrated for inductive loads
Error flag; TTL/CMOS-compatible output for error detection
(open drain)
Control input 1; TTL/CMOS-compatible
Ground; connected internally to cooling fin
Control input 2; TTL/CMOS-compatible
Supply voltage; wire with capacitor matching load
Output of channel 2; Short-circuit proof, free-wheeling
diodes integrated for inductive loads
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.
Semiconductor Group
3
1998-02-01