P-TO220-7-1
P-TO220-7-8
5-A DC Motor Driver with Inhibit
Overview
TLE 5207
Semiconductor Group
1
1998-02-01
Description
TLE 5207 is an integrated power bridge with inhibit feature and DMOS output stages for
driving DC motors.
This motor bridge is optimized for driving DC motors in reversible operation. The internal
protective circuitry in particular ensures that no crossover currents can occur.
Because the free-wheeling diodes are integrated, the external circuitry that is necessary
is restricted to the capacitors on the supply voltage.
The two control inputs have TTL/CMOS-compatible levels.
Type
Ordering Code
Package
TLE 5207
Q67000-A9295
P-TO220-7-1
TLE 5207G
Q67006-A9296
P-TO220-7-8
Features
Output current
4 A (peak 5 A)
Inhibit with very low quiescent current (typ. 20
A)
I/O error diagnostics
Short-circuit proof
Four-quadrant operation
Integrated free-wheeling diodes
Wide temperature range
TLE 5207
Semiconductor Group
2
1998-02-01
Figure 1
Pin Configuration (top view)
Pin Definitions and Functions
Pin
Symbol
Function
1
Q1
Output of channel 1; short-circuit proof, free-wheeling diodes
integrated for inductive loads
2
EF
Error flag; TTL/CMOS-compatible output for error detection
(open drain)
3
I1
Control input 1; TTL/CMOS-compatible
4
GND
Ground; connected internally to cooling fin
5
I2
Control input 2; TTL/CMOS-compatible
6
V
S
Supply voltage; wire with capacitor matching load
7
Q2
Output of channel 2; Short-circuit proof, free-wheeling diodes
integrated for inductive loads
AEP01224
Q1
EF
1
GND
2
Q2
V
S
4
3
2
1
5
6
7
TLE 5207
TLE 5207G
TLE 5207
Semiconductor Group
3
1998-02-01
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.In case of low potential at both inputs
the device is switched in inhibit-condition with very low current consumption.
Output Stages
The output stages from a switched H-bridge. Protective circuits make the outputs short-
circuit proof from ground up to a supply voltage of 16 V. Positive and negative voltage
spikes, which occur when switching inductive loads, are limited by integrated power
diodes.
Monitoring and Protective Functions
An internal circuit ensures that all output transistors are turned-OFF if the supply voltage
is below the operating range.
A monitoring circuit for each output transistor detects whether the particular transistor is
active and in this case prevents the corresponding source transistor (sink transistor) from
conducting in sink operation (source operation). This effectively guards against
crossover currents. Pulse-width operation is possible up to a maximum switching
frequency of 1 kHz for any load.
Depending on the load current higher frequencies are possible.
Functional Truth Table
I1
I2
Q1
Q2
Comments
L
L
Z
Z
Device in inhibit condition with very low current
consumption; outputs in tristate condition (high impedance)
L
H
L
H
Motor turns clockwise
H
L
H
L
Motor turns counterclockwise
H
H
H
H
Motor brake; both high side transistors turned-ON
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 and Low side transistor are turned-OFF
TLE 5207
Semiconductor Group
4
1998-02-01
Protective Function
Various errors like short-circuit to +
V
S
, ground or across the load are detected. All faults
result in turn-OFF of the output stages after a delay of 40
s and setting of the error flag
EF to ground. Changing the inputs resets the error flag.
Output Shorted to Ground Detection
If a high side transistor is switched on and its output is shorted to ground, the output
current is limited to typ 11 A. After a delay of 40
s all outputs will be switched off and
the error flag EF is set to ground.
Output Shorted to +
V
S
and Overload Detection
An internal circuit detects if the current through the low side transistor is higher than 4 A
typ. In this case all outputs are turned-OFF after 40
s and the error flag is set to ground.
At a junction temperature higher than 160
C the thermal shutdown turns-OFF, all four
output stages commonly and the error flag is set without a delay.
Diagnosis
Input
Output
Diagnosis
EF
I1
I2
Q1
Q2
Shorted to GND
Shorted to
V
S
Overload
L
L
Z
Z
Q1, Q2
Q1, Q2
H
L
H
L
H
Q2
Q1
X
L
H
L
H
L
Q1
Q2
X
L
H
H
H
H
Q1, Q2
L
TLE 5207
Semiconductor Group
5
1998-02-01
Figure 2
Block Diagram
AEB01225
S
V
Protection
Circuit 1
Circuit 1
Protection
Flag
Error
Error Flag
2
6
GND
4
3
5
1
7
Output 2
Output 1
Control Input 2
Control Input 1
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