TDA7563ASM STMicroelectronics, TDA7563ASM Datasheet - Page 13

• Manufacturer Part Number: TDA7563ASM
• Description: IC AMP QUAD MULTIFUNC FLEXIWATT2
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA7563ASM

• 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

TDA7563A
3
3.1
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 "diagnostic 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
SHORT TO GND
SHORT TO Vs
SHORT ACROSS THE SPEAKER
OPEN SPEAKER
and
Isource
19) is internally generated, sent through the speaker(s) and sunk back.The
Isink
21
show SVR and OUTPUT waveforms at the turn-on (standby out) with and
2
C reading).
Vs~5V
CH+
CH-
Isource
I (mA)
Isink
2
C bus request. Detectable output faults
Measure time
Diagnostics functional description
~100mS
t (ms)
13/35