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TLE5207G ,5 A DC Motor Driver 5-A DC Motor Driver with Inhibit TLE 5207Overview
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TLE5207-TLE5207G
5 A DC Motor Driver
5-A DC Motor Driver with Inhibit
Overview
TLE 5207
DescriptionTLE 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.
FeaturesOutput current – 4 A (peak 5 A)Inhibit with very low quiescent current (typ. 20mA)I/O error diagnosticsShort-circuit proofFour-quadrant operationIntegrated free-wheeling diodesWide temperature range
TLE 5207
Figure1Pin Configuration (top view)
Pin Definitions and Functions
TLE 5207
Circuit Description
Input CircuitThe 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 StagesThe 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 FunctionsAn 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 1kHz for any load.
Functional Truth Table
Notes for Output Stage
TLE 5207
Protective FunctionVarious errors like short-circuit to +VS, ground or across the load are detected. All faults
result in turn-OFF of the output stages after a delay of 40ms and setting of the error flag
EF to ground. Changing the inputs resets the error flag.
Output Shorted to Ground DetectionIf 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 40ms all outputs will be switched off and
the error flag EF is set to ground.
Output Shorted to +VS and Overload DetectionAn 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 40ms 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
TLE 5207
Figure2Block Diagram
TLE 5207
Electrical CharacteristicsNote:Stresses above those listed here may cause permanent damage to the device.
Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.During overload condition currrents higher than 5 A can dynamically occur, before the device shuts off, without
any damage to the device.Depending on load, higher frequencies are possible.
Absolute Maximum Ratingsj = – 40 to 150 °C
Voltage
Current
Thermal Resistance
Operating Range
TLE 5207
CharacteristicsS
= 6 to 18 V; Tj
= – 40 to 150 °C
General
Logic
TLE 5207Note:The listed characteristics are ensured over the operating range of the integrated
circuit. Typical characteristics specify mean values expected over the production
spread. If not otherwise specified, typical characteristics apply at Tj = 25 °C and
the given supply voltage.Values for RDSON are for t > 100 ms after applying + VS and t > 400 ms after changing from VI1 = VI2 = L to VI1
or VI2 = H.
Outputs
Characteristics (cont’d)S
= 6 to 18 V; Tj
= – 40 to 150 °C
