TLE8201R Datasheet, PDF (35/45 Pages) Infineon Technologies AG – Door Module Power IC

TLE 8201R
4.6
Power-Outputs 8 - 11 (Lamp drivers)
Outputs 8 - 11 are a high-side switches intended to drive ohmic loads 5W or 10W lamp
(bulb) loads.
4.6.1 Protection and Diagnosis
4.6.1.1 Short Circuit of Output to Ground
The high-side switches are protected against short to GND.
The high-side switches Out 8 - 11 are protected against short to GND.
Short Circuit during switch-on
During switch-on of an output a current an voltage level is used to check for a short
circuit. If a switch is turned on and the short circuit condition is valid after t_dSDon8 the
output transistor is turned off and the corresponding diagnosis bit is set. A short circuit
condition is valid if the current rises above the shutdown threshold I_SD8 and the voltage
at the output stays below V_SD8. During the delay time, the current is limited to I_SC8 as
shown in Figure 16
OUT 8...11
I_SC8
I_OUT
I_SD8
short to GND
I_OUT
V_OUT
t_dSDon8
t
V_OUT
V_SD8
Figure 16 Short circuit protection during switch-on
Data Sheet Rev. 2.0
35
2006-06-07