Data Sheet

25

Rev. 1.0, 2008-12-04

TLE7184F

Description of Modes, Protection and Diagnostic Functions

If the supply voltage at VS reaches the Under Voltage shut down level

V

the IC goes into Go-to-Sleep Mode and finally into Sleep Mode.

9.2.5

VDD Under Voltage Diagnosis (VDD_UVD)

The TLE7184F has an integrated VDD Under Voltage Diagnosis, to assure that the behavior of the bridge driver

output stages is predictable in all supply voltage ranges.

If the voltage at VDD reaches the Under Voltage diagnosis level

V

is set the IC goes into Error Mode.

Figure 10

Timing of VDD Under Voltage Diagnosis

9.2.6

VDD Under Voltage Shut Down (VDD_UVSD)

The TLE7184F has an integrated VDD Under Voltage Shut Down, to avoid operation with VDD shorted to GND.

If the supply voltage at VDD reaches the Under Voltage shut down level

V

VREG and VDD will be switched off and the IC will go to the Deadlock Mode.

9.2.7

VREG Under Voltage Diagnosis (VREG_UVD)

The TLE7184F has an integrated VREG Under Voltage Diagnosis, to assure that the behavior of the bridge driver

output stages is predictable in all supply voltage ranges.

If the voltage at VREG reaches the Under Voltage diagnosis level

V

is set the IC goes into Error Mode.

V

VDD

V

RT

ERR

T

RR

VS

< T

RR

____

RGS