TDA7567PD STMicroelectronics, TDA7567PD Datasheet - Page 17

• Manufacturer Part Number: TDA7567PD
• Description: IC AMP QUAD BCD/BRIDG POWERSO36
• Manufacturer: STMicroelectronics
• Type: Class SBr

Specifications of TDA7567PD

• Output Type: 4-Channel (Quad)
• Max Output Power X Channels @ Load: 75W x 4 @ 2 Ohm
• Voltage - Supply: 8 V ~ 18 V
• Features: Differential Inputs, I²C, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Surface Mount
• Package / Case: PowerSO-36 Exposed Top Pad
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 4-Channel Stereo
• Audio Amplifier Function: Speaker
• Single Supply Voltage (typ): 14.4V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 85W
• Rail/rail I/o Type: No
• Single Supply Voltage (min): 8V
• Single Supply Voltage (max): 18V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -55C to 150C
• Operating Temperature Classification: Military
• Mounting: Surface Mount
• Pin Count: 36
• Package Type: PowerSO SLUG UP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7567PD
4
4.1
Multiple faults
When more misconnections are simultaneously in place at the audio outputs, it is
guaranteed that at least one of them is initially read out. The others are notified after
successive cycles of I
This is true for both kinds of diagnostic (Turn-on and Permanent).
The table below shows all the couples of double-fault possible. It should be taken into
account that a short circuit with the 4 ohm speaker unconnected is considered as double
fault.
Table 5.
S. GND (so) / S. GND (sk) in the above table make a distinction according to which of the 2
outputs is shorted to ground (test-current source side= so, test-current sink side = sk). More
precisely, in Channels CH3 and CH2, so = CH+, sk = CH-; in Channels CH4 and CH1, so =
CH-, sk = CH+.
In Permanent Diagnostic the table is the same, with only a difference concerning Open
Load(*), which is not among the recognizable faults. Should an Open Load be present
during the device's normal working, it would be detected at a subsequent Turn on Diagnostic
cycle (i.e. at the successive Car Radio Turn on).
Faults availability
All the results coming from I
measurements inside a defined period of time. If the fault is stable throughout the whole
period, it will be sent out.
To guarantee always resident functions, every kind of diagnostic cycles (Turn on,
Permanent, Offset) will be reactivate after any I
reads the I
diag. cycle (i.e. The device is in turn-on state, with a short to GND, then the short is removed
and micro reads I
previous cycle. If another I
general to observe a change in Diagnostic bytes, two I
S. Across L.
S. GND (so)
S. GND (sk)
Open L.
S. Vs
2
C, a new cycle will be able to start, but the read data will come from the previous
Double fault table for turn-on diagnostic
S. GND (so)
2
C. The short to GND is still present in bytes, because it is the result of the
S. GND
2
C reading and faults removal, provided that the diagnostic is enabled.
/
/
/
/
2
C reading operation occurs, the bytes do not show the short). In
2
Cb us, by read operations, are the consequence of
Doc ID 16903 Rev 1
S. GND (sk)
S. GND
S. GND
/
/
/
2
C reading operation. So, when the micro
S. Vs + S.
S. Vs
S. Vs
S. Vs
GND
/
/
2
C reading operations are necessary.
S. Across L.
S. Across L.
S. GND
S. GND
S. Vs
/
Multiple faults
Open L. (*)
Open L. (*)
Open L.
S. GND
S. Vs
N.A.
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