TLE6288R_10 Datasheet, PDF (14/32 Pages) Infineon Technologies AG – Smart 6 Channel Peak & Hold Switch

TLE6288R
Description
4.3
Diagnostic
The TLE6288R has a parallel diagnosis via 6 output pind (DIAG1 - DIAG6) and a serial diagnosis functionallity via
SPI.
4.3.1 Parallel Diagnostic Functions
Parallel diagnostic pins (push-pull) change state according to the input signal of the corresponding channel. As
soon as an error occurs at the corresponding channel (overload and overtemperature is detected in on state and
open load/switch bypass in off state) the DIAG output shows the inverted input signal. An fault is detected only if
it lasts for longer than the fault filter time. The fault information is not latched in a register.
If DIAG6 is configured as Overtemperature Flag: This is a general fault pin which shows a high to low transition
as soon as an overtemperature error occurs for any one of the six channels (for longer than the fault filter time) or
the IC logic. This fault indication can be used to differ between overload and overtemperature errors in one of the
six channels or to detect a general IC overtemperature.
4.3.2 Electrical Characteristics: Diagnostic Functions
Electrical Characteristics: Diagnostic Functions
V_CC = 4.5 V to 5.5 V, T_j = -40 ⋅C to +150 ⋅C, V_B = 6 V to 16 V, Reset = H, V_DO = V_CC, all voltages with respect to
ground, positive current flowing into pin (unless otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Pin/
Conditions
Min. Typ. Max.
Comment
4.3.1 Open Load Detection Voltage V_DS(OL) –
5.5 –
V–
4.3.2 Open Load Detection Voltage V_DS(OL) –
4.5 –
V–
4.3.3
Output Open Load diagnosis I_d(OL)
Current
-500 -100 -20 μA –
lowside
configuration,
V_B = 12 V
highside
configuration,
V_B = 12 V
V_B = V_out = 12
V
4.3.4 Fault Filter Time
t_f(fault)
50
100 200 μs –
–
4.3.5 Switch Bypass Detection
I_d(SB)
–
–
250 μA –
–
Current
4.3.6 Overload Detection Threshold I_Dd(lim1-3) 4
–
6
A–
(Channel 1 to 3)
no regulation
mode
4.3.7 Overload / low inductance t_li
load Detection time
(Channel 1 to 3)
–
–
t_fo
μs see
current
Chapter 7.3 control mode
4.3.8 Overload Detection Threshold I_{Dd(lim 4-6)} 3
–
6
A–
–
(Channel 4 to 6)
Data Sheet
14
Rev. 2.5, 2010-10-11