TDA75610DLVPD 查看數據表（PDF） - STMicroelectronics

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TDA75610DLVPD

4 x 45 W differential power amplifier with full I2C diagnostics, high efficiency and low voltage operation

STMicroelectronics 

Diagnostics functional description

TDA75610DLVPD

Figure 24. SVR and output pin behavior (Case 2: with turn-on diagnostic)

6SVR

/UT

4U RNOND IAGNOSTIC

ACQU ISI TIONTIM EMS 4YP

0ERMANENTDIAGN OST IC

ACQUI SIT IONTIMEMS 4YP

T

$IAGNOST IC%NABLE

4UR NON

4URNON $IAGN OST ICS DATAOUT PU T

PERMITT EDTI ME

$IAGN OST IC% NABLE

0ERMAN ENT

&! 5,4

EVENT

)#"$!4!

"IASPOWERAMP TURNON

PERMITTE DTIME

2EAD$ATA

0ERMANENT$IAGNO ST ICS DATAOUT PUT

PERMITTE DTIME

'!0'03

The information related to the outputs status is read and memorized at the end of the

current pulse top. The acquisition time is 100 ms (typ.). No audible noise is generated in the

process. As for SHORT TO GND / Vs the fault-detection thresholds remain unchanged from

26 dB to 16 dB gain setting. They are as follows: TDA75610DLVPD

Figure 25. Short circuit detection thresholds

3#TO'.$ X .ORMAL/PERATION X

3#TO6S

6

6 6

636 636

63

'!0'03

Concerning SHORT ACROSS THE SPEAKER / OPEN SPEAKER, the threshold varies

from 26 dB to 16 dB gain setting, since different loads are expected (either normal speaker's

impedance or high impedance). The values in case of 26 dB gain are as follows:

Figure 26. Load detection thresholds - high gain setting

3#ACROSS,OAD X .ORMAL/PERATION X

/PEN,OAD

6

7 7

7

7

)NFINITE

'!0'03

If the Line-Driver mode (Gv= 16 dB and Line Driver Mode diagnostic = 1) is selected, the

same thresholds will change as follows:

Figure 27. Load detection threshold - low gain setting

3#ACROSS,OAD X .ORMAL/PERATION X

/PEN,OAD

7

7 7

7 7

INFINITE

'!0'03

18/37

DocID024175 Rev 8

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