TLE72422GXT Infineon Technologies, TLE72422GXT Datasheet - Page 19

• Manufacturer Part Number: TLE72422GXT
• Manufacturer: Infineon Technologies

Specifications of TLE72422GXT

• Operating Temperature (max): 150C
• Operating Temperature (min): -40C
• Pin Count: 28
• Mounting: Surface Mount
• Screening Level: Automotive
• Lead Free Status / Rohs Status: Compliant

5.3.1
When the OUTx pin transitions high, the fault timers are cleared to 0 and the tested timer starts. If the tested timer
expires, the Bit SB-T (in the SPI register #9) is set to 1. If the OUTx pin transitions low, the tested timer is cleared
and then used for the off-state diagnostics.
If the analog SB fault signal (SB-FA) changes to 1, the fault filter timer starts. If the fault filter timer expires, the
digitally filtered SB fault signal (SB-FD) is set to one. If SB-FA changes to 0, SB-FD changes immediately to 0 and
the filter timer is cleared to 0.
A SB-FD=1 and SB-T=1 switches off the OUTx signal and the SB-F bit in the FAULT register will be set. The OUTx
pin remains in the off state until the fault retry PWM period counter expires.
If the SPI fault register is read, then the SB-F bit and the SB-FT bit in the FAULT register are cleared. Also, the
tested timer is cleared to 0.
The Short to Battery (SB) detection functions in both on/off and constant current mode. The SG-FD and OL-OFF-
FD signals are held to 0 while the OUTx pin is high.
If the TLE7242 2G IC is in ON/OFF mode, Open Load ON detection is disabled (OL-ON-F = 0).
If the TLE7242 2G IC is not in ON/OFF mode and the OUTx pin is high for 64 PWM periods, then open load fault
ON mode is detected and the OL-ON-F bit in the FAULT register is set. This bit will be cleared when a SPI fault
read occurs. If the OUTx pin remains in a high state, then the open load - on fault condition is detected again after
another 64 PWM cycles.
Figure 12
Data Sheet
SPI READ
ADDR 9
PWM_Start
Current
OUTx
SB-T
Load
SB-F
Vpos
Load
short
ok
Vsb
On-State Diagnostics
On-State Diagnostic Timing - Short to Vbat
Tested
Timer
Fault
Filter
Fault Retry Time
(Address #8)
Short to Vbat
19
Functional Description and Electrical Characteristics
Tested
Timer
Fault
Filter
Rev. 1.0, 2008-07-09
TLE7242-2G