TLE6217G_08 Datasheet, PDF (8/19 Pages) Infineon Technologies AG – Smart Quad Channel Low-Side Switch

TLE6217G
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 IQU then
an open load condition is detected.
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 the threshold V_DS(OL), which is typ. 33 % of the supply voltage VS.
To prevent an open load diagnosis in case of transient Voltages on the outputs the open load detection
in off mode uses a filter of typ. 30μs.
Status output at pulse width operation
If the input is operated with a pulsed signal, the status does not follow each single pulse of the input
signal. An internal delay tD of typ. 1.2ms (min 500 μs) enables a continuous status output signal. See
the timing diagrams on the following pages for further information.
This internal status delay simplifies diagnostic software for pwm applications.
Diagnostic Table
In general the status follows the input signal in normal operating conditions.
If any error is detected the status is inverted.
Operating Condition
Standby
Normal function
Open load or short to ground
Overload or short to supply¹⁾
reset latch ²⁾
Overtemperature¹⁾
reset latch ²⁾
Standby
Input
STBY
L
H
H
H
H
H
H
H
H
H
H
H
H
H
Enable
Input
ENA
X
L
H
H
L
L
H
H
H
H
L
H
H
L
Control
Input
IN
X
X
L
H
L
H
L
H
H
H→ L
X
H
H→ L
X
Power
Output
Q
off
off
off
ON
off
off
off
ON
off
off
off
off
off
off
Status
Output
ST
H
L
L
H
H
H
H
L
L
L
L
L
L
L
Note 1) : overload/short-to-supply/overtemperature - events shorter than min. time tDSO specified in
2.10 will not be latched and not reported at the status pin.
Data Sheet
8
Rev. 6.1, 2008-04