TLE7209-2R_07 Datasheet, PDF (8/32 Pages) Infineon Technologies AG – 7 A H-Bridge for DC-Motor Applications

TLE 7209-2R
Circuit Description
I_OUK
t_b
t_a
t_b
I_L
I_OUK
t_b
I_L
time
time
Figure 5
Short to Vs detection. Left: normal operation. Right: short circuit is
detected
2.3.3 Short circuit across the load
If short circuit messages from high- and low-side switch occur simultaneously within a
delay time of typically 2µs, the error bit “Short Circuit Over Load”, SCOL is set.
2.3.4 Over-Temperature
In case of high DC-currents, insufficient cooling or high ambient temperature, the chip
temperature may rise above the thermal shut-down temperature T_SD. In that case, all
output transistors are shut-down and the error-bit “Over-Temperature”, OT is set.
2.3.5 Under-Voltage shut-down
If the supply-voltage at the V_S pins falls below the under-voltage detection threshold, the
outputs are set to tristate and the error-bit “Under-Voltage at V_S“ is set.
2.4
Diagnosis
The Diagnosis-Mode can be selected between SPI-Diagnosis and Status-Flag
Diagnosis. The choice of the Diagnosis-Mode is selected by the voltage-level on Pin 12
(DMS Diagnosis Mode Selection):
• DMS = GND, Status-Flag Mode
• DMS = V_CC, SPI-Diagnosis Mode
For the connection of Pins SDI, SDO, CSN and SCK/SF see Figure 14 and Figure 15.
Data Sheet
8
Rev. 1.4, 2007-04-05