TLE7230R Datasheet, PDF (12/16 Pages) Infineon Technologies AG – Smart Octal Low-Side Switch

Target Datasheet TLE7230 R/G
mand was valid the rising edge of CS will reset all diagnosis registers and restart the fault filtering time.
In case of an invalid command the device will ignore the data bits and the diagnosis register will not be
reset at the rising CS edge.
Figure 1: Two bits per channel diagnostic feedback
Diagnostic Serial Data Out SO
MSB
LSB
15
3
2
1
0
Ch.8
Ch.2
Ch.1
HH
Normal function
HL
Overload, Shorted Load or Overtemperature
LH
Open Load (off)
LL
Short to GND
For Full Diagnosis there are two diagnostic bits per channel configured as shown in Figure 1.
Normal function: The bit combination HH indicates that there is no fault condition, i.e. normal function.
Overload, Shorted Load or Overtemperature: HL is set when the current limitation gets active, i.e.
there is a overload, short to supply or overtemperature condition. The second reason for this bit combi-
nation is overtemperature of the corresponding channel.
Open load: LH is set when open load is detected (in off state of the channel)
Short to GND : LL is set when this condition is detected (in off state)
Timing Figures
Figure 5: Power Outputs
VIN
VDS
tON
80%
20%
t
tOFF
t
V1.1
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12. Oct. 2003