TDA7564BPD View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7564BPD

4 x 50W multifunction quad power amplifier with built-in diagnostics features

STMicroelectronics 

Diagnostics functional description

TDA7564B

This feature is disabled if any overloads leading to activation of the short-circuit protection

occurs in the process.

Figure 27. Current detection high: load impedance |Z| vs. output peak voltage

Load |z| (Ohm)

50

Low current detection area

30

(Open load)

20

D5 = 1 of the DBx byres

Iout (peak) <250mA

Iout (peak) >500mA

10

IB2(D7) = 0

High current detection area

5

(Normal load)

D5 = 0 of the DBx bytes

3

2

1

1

2

3

4

5

6

7

8

Vout (Peak)

Figure 28. Current detection low: load impedance |Z| vs. output peak voltage

Load |z| (Ohm)

50

Low current detection area

30

(Open load)

20

D5 = 1 of the DBx byres

Iout (peak) <125mA

Iout (peak) >250mA

10

IB2(D7) = 1

High current detection area

5

(Normal load)

D5 = 0 of the DBx bytes

3

2

1

0.5

1

1.5

2

2.5

3

Vout (Peak)

3.5

4

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