TDA7563B STMicroelectronics, TDA7563B Datasheet - Page 14

• Manufacturer Part Number: TDA7563B
• Description: IC AMP QUAD MULTIFUNC FLEXIWATT2
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA7563B

• Output Type: 4-Channel (Quad)
• Max Output Power X Channels @ Load: 75W x 4 @ 2 Ohm
• Voltage - Supply: 8 V ~ 18 V
• Features: I²C, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Package / Case: 27-Flexiwatt (bent and staggered leads)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Diagnostics functional description
4
4.1
14/33
Diagnostics functional description
Turn-on diagnostic
It is activated at the turn-on (standby out) under I
are:
●
●
●
●
To verify if any of the above misconnections are in place, a subsonic (inaudible) current
pulse
turn on diagnostic status is internally stored until a successive diagnostic pulse is requested
(after a I
If the "standby out" and "diag. enable" commands are both given through a single
programming step, the pulse takes place first (power stage still in standby mode, low,
outputs= high impedance).
Afterwards, when the amplifier is biased, the permanent diagnostic takes place. The
previous turn on state is kept until a short appears at the outputs.
Figure 19. Turn-on diagnostic: working principle
Figure 20
without turn-on diagnostic.
Figure 20. SVR and output behavior (Case 1: without turn-on diagnostic)
Short to GND
Short to Vs
Short across the speaker
Open speaker
(Figure
I2CB DATA
2
Vsvr
Out
C reading).
and
Bias (power amp turn-on)
19) is internally generated, sent through the speaker(s) and sunk back. The
21
show SVR and output waveforms at the turn-on (standby out) with and
Isource
Isink
Vs~5V
CH+
CH-
Doc ID 12733 Rev 3
Diagnostic Enable
(Permanent)
Isource
I (mA)
Isink
Permanent Diagnostics data (output)
acquisition time (100mS Typ)
2
FAULT
C bus request. Detectable output faults
event
Permanent diagnostic
Measure time
~100mS
permitted time
t (ms)
Read Data
TDA7563B
t