TLE8209-2SA Datasheet, PDF (19/38 Pages) Infineon Technologies AG – SPI Programmable H-Bridge

TLE8209-2SA
Protection and Monitoring
operation, i.e. the outputs follow the inputs according to the truth table. The current limit I_L can be programmed to
four different values by setting the SPI bits CL1 and CL2 in the SPI configuration register. To avoid high chopper
frequencies the time between two transients t_trans is limited.
Current limitation is available in H-bridge operation mode, not in single switch operation mode. This means, that
the current limit, current limit hysteresis and blanking time has no effect in single switch operation mode.
8.3
Temperature Dependent Current Reduction
For T_ILR < T_j < T_SD the current limit decreases from I_L as set by the SPI to I_{L_TSD} = 2.5 A typ. as shown in
Figure 10.
A
I_L
tolerance of temperature
dependent current
reduction
range of over-
temperature shut-down
I_{L_TSD}
(typ. 2.5A)
Figure 10
T_ILR
T_SD
(typ. 165°C) (min. 175°C)
Temperature Dependent Current Reduction
Tj [°C]
8.4
Short Circuit to Ground
short circuit detected
current limitation active
I_OUK
IL
Ihys
tb
I_OUT
Short
IN1
OUT1
IN2
OUT2
Figure 11 Short to Ground Detection
Data Sheet
t<tb
19
output off
current tracking
t_{DF_H}
tDF_OFF
tristate
tristate
time
Rev. 1.0, 2010-02-16