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TLE6216G
Vehicle Stability ICs
Smart Quad Channel Low-Side Switch
Features Product SummaryLow ON-resistance 2 x 0.2 � , 2 x 0.35 � (typ.)Power - SO 20 - Package with integrated
cooling area
� Overload shutdownSelective thermal shutdown
� Status monitoring
� Overvoltage protectionShorted circuit protectionStandby mode with low current consumptionµC compatible inputElectrostatic discharge (ESD) protection
ApplicationAll kinds of resistive and inductive loads (relays, electromagnetic valves)µC compatible power switch for 12 and 24 V applicationsSolenoid control switch in automotive and industrial control systems
General descriptionQuad channel Low-Side-Switch (2x5A/2x3A) in Smart Power Technology (SPT) with four separate in-
puts and four open drain DMOS output stages. The TLE 6216 is fully protected by embedded protec-
tion functions and designed for automotive and industrial applications.
Block diagram
ST1
ST2
GND
ST3
IN1
IN2
IN3
IN4
STBY
Pin Configuration (Top view)
Pin DescriptionHeat slug internally connected to ground pins
P - DSO - 20 - 12
Detailed Block DiagramOUT1
OUT4
ST4
IN4
ST1
IN1
ENA
OUT2
OUT3
GND
ST3
IN3
ST2
IN2
STBY
Block Diagram of Open Load Detection
Maximum Ratings for Tj = – 40°C to 150°C
Ambient thermal conditions
Electrical Characteristics
1. Power Supply (VS)
2. Power Outputs
3. Digital Inputs (IN1, IN2, IN3, IN4, ENA)
4. Digital Status Outputs (ST1 - ST4) open Drain Measured on P-DSO-20 devices Measured on chip, bond wires not included
Electrical Characteristics
5. Standby Input (STBY)
6. Diagnostic FunctionsTable 1:
VDSC is the output voltage of the corresponding channel, paired for open load detection Corresponding outputs
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 CircuitsThe 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 VS.
Switching StagesThe 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 CircuitsThe outputs are protected against current overload and overtemperature.
There is no protection against reverse polarity of the supply voltage.
Error DetectionThe status outputs indicate the switching state under normal conditions (LOW = off; HIGH = on). If anerror 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 andthe 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
In the off mode, the output voltage is monitored.
An open load condition is detected when the output voltage of a given channel is below 55 % of thesupply voltage VS. Also the output voltages of two outputs are compared against each other in off con-
dition with a fixed offset of typ. 1.25 V to recognize GND bypasses. To suppress fault diagnosis during
the flyback phase of the compared output, the diagnostic circuit includes a latch function.
Reset of this latch is done at end of the flyback phase, additionally it can be reset by a low signal on
the enable input or a high signal of the input line.
See block diagram of open load detection on page 4.
Diagnostic TableIn general the status follows the input signal in normal operating conditions.
If any error is detected the status is inverted.
