TLE5012 datasheet(59/64 Pages) INFINEON

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TLE5012

Specifications

Final Data Sheet

V 1.0, 2010-11

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 tDIG to set the test comparator bits in the SSC Interface registers. This serves as digital spike

suppression.

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 VOVG, VOVA and VOVD, then this overvoltage comparator is activated.

Figure 29

OV comparator

3.7.2

DD Overvoltage Detection

The Overvoltage Detection comparator monitors the external supply voltage at the VDD 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.

Table 28

Test comparators

Parameter

Symbol

Values

Unit

Note / Test Condition

Min.

Typ.

Max.

Overvoltage Detection

VOVG

-2.80

VOVA

-2.80

VOVD

-2.80

VDD Overvoltage

VDDOV

-6.05

VDD Undervoltage

VDDUV

-2.70

GND - Off Voltage

VGNDoff

-0.55

VDD - Off Voltage

VVDDoff

-0.55

Spike Filter Delay

tDEL

-10

µs

1) Not subject to production test - verified by design/characterization

REF

10µs

Spike

Filter

xxx_OV

VDDA

GND

VDD

VRG

VRA

VRD

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