TLE5012_10 Datasheet, PDF (59/64 Pages) Infineon Technologies AG – GMR-Based Angular Sensor for Rotor-Position Sensing

TLE5012
Specifications
3.7
Overvoltage Comparators
Various comparators monitor the voltage in order to ensure error-free operation. The overvoltage must be active
at least 256 periods of t_DIG to set the test comparator bits in the SSC Interface registers. This serves as digital spike
suppression.
Table 28 Test comparators
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 Note / Test Condition
V
V
V
V
V
V
V
µs
1)
3.7.1 Internal Supply Voltage Comparators
Every voltage regulator has an overvoltage (OV) comparator to detect a malfunction. 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.
REF
VDD
VRG
V_RA
V_RD
Figure 29 OV comparator
V_DDA
-
+
GND
GND
10µs
Spike
Filter
xxx_OV
3.7.2
V_DD Overvoltage Detection
The Overvoltage Detection comparator monitors the external supply voltage at the V_DD pin. It activates the S_VR
bit (Figure 29).
3.7.3 GND - Off Comparator
The GND - Off comparator is used to detect a voltage difference between the GND pin and SCK. It activates the
S_VR bit of the SSC Interface. This circuit can detect a disconnection of the supply GND pin.
Final Data Sheet
59
V 1.0, 2010-11