TLI5012BE1000_15 Datasheet, PDF (32/37 Pages) Infineon Technologies AG – GMR-Based Angle Sensor

TLI5012B E1000
Specification
4.4.3 Supply Monitoring
The internal voltage nodes of the TLI5012B E1000 are monitored by a set of comparators in order to ensure error-
free operation. An over- or undervoltage condition must be active at least 256 periods of the digital clock to set the
corresponding error bits in the Status register. This works as digital spike suppression.
Over- or undervoltage errors trigger the S_VR bit of Status register. This error condition is signaled via the in the
Safety Word of the SSC protocol, the status nibble of the SPC interface or the lower diagnostic range of the PWM
interface.
Table 4-19 Test comparator threshold voltages
Parameter
Symbol
Values
Min. Typ. Max.
Overvoltage detection
V_OVG
2.80
V_OVA
2.80
V_OVD
2.80
V_DD overvoltage
V_DDOV
6.05
V_DD undervoltage
V_DDUV
2.70
GND - off voltage
V_GNDoff
-0.55
V_DD - off voltage
V_VDDoff
0.55
Spike filter delay
t_DEL
10
1) Not subject to production test - verified by design/characterization
Unit
V
V
V
V
V
V
V
μs
Note / Test Condition
1)
1)
1)
1)
1)
1)
1)
1)
4.4.3.1 Internal Supply Voltage Comparators
Every voltage regulator has an overvoltage (OV) comparator to detect malfunctions. If the nominal output voltage
of 2.5 V is larger than V_OVG, V_OVA and V_OVD, then this overvoltage comparator is activated.
4.4.3.2 V_DD Overvoltage Detection
The overvoltage detection comparator monitors the external supply voltage at the V_DD pin.
V_DDA
REF
-
VDD
VRG
V_RA
+
V_RD
GND
Figure 4-15 Overvoltage comparator
GND
10µs
Spike
Filter
xxx_OV
4.4.3.3 GND - Off Comparator
The GND - Off comparator is used to detect a voltage difference between the GND pin and SCK. This circuit can
detect a disconnection of the supply GND Pin.
Data Sheet
32
Rev. 1.1, 2015-09