Philips TDA1562ST User Manual
2003 Feb 12
4
Philips Semiconductors
Preliminary specification
70 W high efficiency power amplifier
with diagnostic facility
with diagnostic facility
TDA1562Q; TDA1562ST;
TDA1562SD
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
POWER-
STAGE
STAGE
PREAMP
STAT
VP*
VP*
75
k
k
Ω
−
+
C1
+
C1
−
FEEDBACK
CIRCUIT
TDA1562
POWER-
STAGE
STAGE
CLASS-B
CLASS-H
CLASS-H
FAST MUTE
TEMPERATURE
SENSOR
LOAD DUMP
PROTECTION
STANDBY
MUTE
ON
LOAD
DETECTOR
DYNAMIC
DISTORTION
DETECTOR
DIAGNOSTIC
INTERFACE
TEMPERATURE
PROTECTION
CURRENT
PROTECTION
LIFT-SUPPLY
LIFT-SUPPLY
disable
disable
16
MODE
4
1
IN
+
3
5
75
k
k
Ω
15 k
Ω
reference
voltage
voltage
PREAMP
−
+
2
IN
−
14
Vref
17
SGND
C2
+
C2
−
OUT
−
15
13
6
PGND1
PGND2
MGL264
12
11
DIAG
OUT
+
7
8
9
10
VP2
VP1