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TLE5011

Specification

Final Data Sheet

V1.1, 2010-05

3.11

Overvoltage Comparators

Various comparators monitor the voltage in order to ensure error-free operation.

The overvoltages must be active for at least t

DEL to set the test comparator bits in the SSC interface registers. This

works as digital spike suppression.

3.11.1

Internal Supply Voltage Comparators

Every voltage regulator has an overvoltage comparator to detect a malfunction.

If the nominal output voltage of 2.5 V is larger than V

OVG, VOVA and VOVD, then this overvoltage comparator is

activated. It sets the VRx_OV bit.

Figure 19

OV Comparator

3.11.2

DD Overvoltage Detection

The Overvoltage Detection Comparator monitors the external supply voltage at the V

DD pin. It activates the

STAT_VR (see Figure 19).

3.11.3

GND-off Comparator

The GND-off Comparator is used to detect a voltage difference between the GND pin and TST1 (which must be

soldered to GND in the application). It activates the STAT_VR bit. This circuit can detect a disconnection of the

Supply GND Pin.

Table 18

Test Comparators

Parameter

Symbol

Limit Values

Unit

Notes

min.

typ.

max.

Overvoltage Detection

VOVG

2.80

VOVA

2.80

VOVD

2.80

VDD Overvoltage

VDDOV

6.5

GND - off Voltage

VGNDoff

0.54

VGNDoff = VGND - VTST1

VDD - off Voltage

VVDDoff

0.48

VVDDoff = VCLK - VDD

or V

SCK - VDD

Spike filter Delay

tDEL

µs

The error condition has to last longer

than this value

(min. 256 clocks of f

DIG)

REF

10µs

Spike

Filter

xxx_OV

DDA

GND

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