TLE6216G Datasheet, PDF (8/17 Pages) Infineon Technologies AG – Smart Quad Channel Low-Side Switch

Datasheet TLE 6216
Application Description
This IC is especially designed to drive inductive loads (relays, electromagnetic valves).
Integrated clamp-diodes limit the output voltage when inductive loads are discharged.
Four open-drain logic outputs indicate the status of the integrated circuit. The following conditions are
monitored and signaled:
- Overloading of output (also shorted load to supply) in active mode
- Open and shorted load to ground in active and inactive mode
- Overtemperature
Circuit Description
Input Circuits
The control and enable inputs, both active high, consist of schmitt triggers with hysteresis. All inputs
are connected with pull-down current sources. Not connected inputs are interpreted as LOW.
In standby mode (STBY = LOW) the current consumption is greatly reduced. The circuit is active when
STBY = HIGH.
If the standby function is not used, it is allowed to connect the standby pin directly to V_S.
Switching Stages
The four power outputs consist of DMOS-power transistors with open drains. The output stages are
shorted loads protected throughout the operating range. Integrated clamp-diodes limit voltage over-
shoots produced when inductive loads are demagnetized.
Parallel to the DMOS transistors there are internal pull down resistors. They are provided to detect an
open load condition in the off state. They will be disconnected in the standby mode.
Protective Circuits
The outputs are protected against current overload and overtemperature.
There is no protection against reverse polarity of the supply voltage.
Error Detection
The status outputs indicate the switching state under normal conditions (LOW = off; HIGH = on). If an
error occurs, the logic level of the status output is inverted, as listed in the diagnostic table below.
The state of the error detection circuits is directly dependent on the input status.
If current overload or overtemperature occurs, the error condition is stored into an internal register and
the output is shutdown. The reset is done by switching off the corresponding control input.
Open load is detected for all four channels in on and off mode. In the on mode the load current is
monitored. If it drops below the specified threshold value, then an open load condition is detected.
V7.1
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