TLE7188F Datasheet, PDF (18/28 Pages) Infineon Technologies AG – 3-Phase Bridge Driver IC

TLE7188F
Protection and Diagnostic Functions
Table 3 Behaviour at different error conditions
Error condition
restart behavior
Shuts down...
Short circuit detection Latch, reset must be performed at ENA pin All external Power -MOSFETs
Over current warning
Self clearing
Nothing
Under voltage
Auto restart
All external Power -MOSFETs
Over voltage
Latch, reset must be performed at ENA pin All external Power -MOSFETs
Over temperature warning Self clearing
Nothing
VCC1 check
Latch, reset must be performed at ENA pin All external Power -MOSFETs
Note: All errors do NOT lead to sleep mode. Sleep mode is only initiated with the INH pin. The latch and restart
behaviour allows to distinguish between the different error types combined at the ERR signals.
Table 4 Prioritization of Errors
Priority
1
2
3
4
5
Error
VCC1 check
Short circuit detection
Under voltage detection
Over voltage detection
Over temperature
Over current
Reset of ERROR registers and Disable
The TLE7188F can be reset with the help of the enable pin ENA. If the ENA pin is pulled to low for a specified
minimum time, the error registers are cleared and the external MOSFETs are switched off actively.
During disable only the errors under voltage shut down and over temperature warning are shown. Other errors are
not displayed.
5.2.9 Electrical Characteristics
Electrical Characteristics - Protection and diagnostic functions
V_S = 5.5 to 20V, T_j = -40 to +150°C, all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
Over temperature
5.2.1 Over temperature warning¹⁾
T_j(OW)
150
170
190
°C
5.2.2 Hysteresis for over temperature d_Tj(OW) –
warning¹⁾
Over current warning
5.2.3 Over current threshold
V_THOC
2
5.2.4 Over current threshold
V_THOC
2
20
–
°C
–
4.5
V
Vs=5.5..8V
–
4.8
V
Vs=8..20V
5.2.5 Over current disabled
V_THOC
–
–
1
V
–
Data Sheet
18
V2.1, 2007-06-20